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The line output amps on the XDA are real pieces of crap. Utter garbage. When the amps go "on" they seem to apply a DC bias, which cuts the frequency response and loudness of the other signal (I simply patched the car head unit and the XDA low-level outputs together). They stay "on" until you power it off, and then they stay off even if powered back on, until the first sound it makes.
It also produces a squeal at a rather high frequency (13k-ish range). And finally, you can hear noise every time the serial port receives data from the GPS. What junk. Also its output is very sensitive to impedance, so when the car head is plugged in also, the frequency response and loudness of the XDA goes all to hell.
My plan was to plug my car kit into the inputs of the power amps for the audio system, giving me GPS as loud as the music and phone calls on the full audio system. I'd also be able to play MP3's from the XDA.
So I figure my only two options for inserting the signal into the amps is to either employ a full mixer, or use a capacitor to block DC. The cap unfortunately still allows the noise through, but it's not that loud. The mixer could work, but I've never seen a small 12v mixer.
So I tried a few caps, but I don't have a great assortment. A .2 microfarad is still too small, cutting down the loudness and only allowing high frequencies through. A 10mf is too big, there's still the impedance problem.
So, anybody got some brilliant ideas?
It's 9 post. So strange rules in xda.
I'm after an adapter to work with my WinMo device which allows me to connect up my own Mic.
The one that almost fits the bill is this ExtUSB 3-in-1 Adaptor but the problem is with the Mic!
I have my own Mic already wired in and a fair way from where the adapter is going to be located. Ideally, I just need a 3.5mm jack for the Mic to go into, just like the 3.5mm jack for the audio out.
The final result being I have a handsfree solution in the car, connected up through the car stereo speakers and a handsfree mic.
Can anyone see any issues with this setup? Does anyone know where I can obtain such an adapter?
1) I tried that adapter with my Touch PRO and it messed up somehow the audio managment so after plugging it in once - after receiving a call I could speak but the device become totally unresponsive only reset worked until a next call... so I hard reseted device and bought the HTC original one.
2) You might get a ground loop when using audio together with charging. I have had it with different cars, devices (laptops/handhelds). The ground loop will give you loud unwanted digital noise while charging. There are workarounds but might not be easy to reach. Basically you need to get the power from the SAME WIRE as the amplifier does.
I have this exact setup in my car and it does work, no feedback problems. I also have the same problem of microphone placement. I have been unable to find an adaptor or a microphone with a long enough wire to do what I wanted, so I had to modify my microphone placement(put it on the dash as oppossed to my sun visor where I wanted it). Other than that issue, it does work great, sounds great over the stereo(both phone calls and music), and charges up at the same time. If you do find either an adaptor or a stupid mini usb microphone with about a 4 foot wire, let me know.
bsell1 said:
I have this exact setup in my car and it does work, no feedback problems. I also have the same problem of microphone placement. I have been unable to find an adaptor or a microphone with a long enough wire to do what I wanted, so I had to modify my microphone placement(put it on the dash as oppossed to my sun visor where I wanted it). Other than that issue, it does work great, sounds great over the stereo(both phone calls and music), and charges up at the same time. If you do find either an adaptor or a stupid mini usb microphone with about a 4 foot wire, let me know.
Click to expand...
Click to collapse
How about the charging?... Is there any change in the audio when plugging in? Try lowering the vol of device as low as possible and maximize the vol of amp.
not at all. The way I have it set up, it is charging or powered the whole time. Of the 3 inputs on the adaptor, one goes to the aux in on my car stereo, one goes to a car power adaptor I installed under the dash, and the 3rd goes to the microphone. I have bluetooth on, so it works with the gps reciever I have(I have an older model without built in gps) and I programed 1 of the buttons to turn on the gps program. Another button is programed to turn on the audio player(I think it is pocket player), which feeds audio to the car stereo anytime I have the aux button pressed on the car stereo. When a phone call comes in, the song pauses and all I have to do is hit the little green answer button on the phone to use it as a speakerphone. Audio is great. I have all the wires snake into one of those little pockets on the dash so there are not a lot of wires going everywhere. Takes about 5-10 seconds to set it up when I get in the car, and about 3 seconds to disconnect when I leave.
Well, I got the Samsung dock, and as much as I like the E4GT, the dock is terrible. Here's my experience:
1. There's a ton of line noise when the phone is docked but nothing is playing, just like with the Epic. I'm using the OEM charger, but that's not the problem--using the same charger, the Photon's car dock is absolutely silent. Samsung must be using some cheap electronics in this thing, and it's simply horrible. (Sorry for venting, but seriously...)
2. The software isn't nearly as seamless as the Photon's either. First, on the Photon, when you dock an app starts that essentially takes over the home button. That means you can move back and forth between the app and the home screens easily. On the Samsung, it seems like once you leave the Vlingo app to, say start a radio streaming app, you can't get back to the dock mode. At least, not without unplugging/replugging the dock connector, but that's extra wear and tear. If I'm wrong about this, please let me know.
Then, the Photon app allows for 4 custom apps to be assigned. That provides a great deal of flexibility, and again it's easy to go from one app to another and then back to dock mode.
Overall, the Samsung car dock experience is nowhere near the Photon's. Motorola really did a great job with this, and Samsung makes it look like they gave actually using the phone in the car zero thought.
What's everyone else doing to make this experience more usable? I'm still choosing between the Photon and the E4GT, and the car dock definitely is a mark in the Photon's favor.
1) Use bluetooth audio streaming for zero noise. Are you connected by the dock's audio out jack, or the GS2's headphone jack? I noticed better sound with the latter, but using BT is easier and sounds so much better.
2) Ditch Vlingo for CarHome Ultra. Extremely customizable and lots of great features, including up to 18 app shortcuts and auto-switching day/night themes. I love it.
You could make a profile in tasker that recognizes when the phone is plugged into a dock. Or you can make one for when it is rotated in landscape and plugged in. Then, you can enable an app to run, or have a list of apps that you can choose from. This is what I do with my phone and I don't even have a dock. It's awesome how much you can do with tasker!
fonseca898 said:
1) Use bluetooth audio streaming for zero noise. Are you connected by the dock's audio out jack, or the GS2's headphone jack? I noticed better sound with the latter, but using BT is easier and sounds so much better.
Click to expand...
Click to collapse
I'd love to do that, unfortunately my car doesn't have Bluetooth audio. And I'm going from the dock's audio out to my car's AUX in. That's an idea, using the headphone jack, but I hate adding wear and tear.
2) Ditch Vlingo for CarHome Ultra. Extremely customizable and lots of great features, including up to 18 app shortcuts and auto-switching day/night themes. I love it.
Click to expand...
Click to collapse
Great, I'll give that a try, thanks!
Sholland91 said:
You could make a profile in tasker that recognizes when the phone is plugged into a dock. Or you can make one for when it is rotated in landscape and plugged in. Then, you can enable an app to run, or have a list of apps that you can choose from. This is what I do with my phone and I don't even have a dock. It's awesome how much you can do with tasker!
Click to expand...
Click to collapse
That's another idea. Thanks!
fonseca898 said:
2) Ditch Vlingo for CarHome Ultra. Extremely customizable and lots of great features, including up to 18 app shortcuts and auto-switching day/night themes. I love it.
Click to expand...
Click to collapse
Thanks again for the tip, that app rocks. In fact, it's better than the Photon's car dock app.
Now all I need to do is find some way to clean up the line noise and I'll be a happy camper.
Go to radioshack. Ask them for a ferrite core. Should be a ring of "ferrite" or iron. Make sure it's big enough to put the plug on your audio cable through. Push it through and wrap it around a few times and see if that helps. Also, running a separate hot lead and ground from your car battery to the cigarette plug you use should help. But the ferrite core should be easier/cheaper
Sent from my SPH-D710 using XDA App
iamtheug said:
Go to radioshack. Ask them for a ferrite core. Should be a ring of "ferrite" or iron. Make sure it's big enough to put the plug on your audio cable through. Push it through and wrap it around a few times and see if that helps. Also, running a separate hot lead and ground from your car battery to the cigarette plug you use should help. But the ferrite core should be easier/cheaper
Sent from my SPH-D710 using XDA App
Click to expand...
Click to collapse
I'll give it a shot, thanks! I might even have one sitting around somewhere...
call audio routing
Has anyone else been able to get call audio to route to the output on the dock? media audio comes out the port so I can hear that on my cars speakers but when I make a call it comes out of the phone speaker....
So, I've tried a variety of power adapters, USB cables, and audio cables, and the line noise remains. I'm going to try the ferrite core around the audio cable, but I don't think that's the issue--if you unplug the unit from power, the line noise disappears. So, I think it's just bad circuitry in the dock.
One would think that Samsung would have received complaints about this with the Epic dock (at least) and would have fixed it. Motorola managed to make a dock with excellent sound quality and zero noise, so it's certainly possible.
Otherwise, the E4GT is decent in the car with that Carhome Ultra app. Although, that doesn't really help with my decision between the E4GT and Photon, because with the Photon I could have the same dock app but also outstanding audio quality.
I can only assume the noise you are hearing is due to a Ground Loop/Hum.
It has to do with the fact that your power source is grounded to a different point than the stereo/speakers. the hum you hear is the difference in voltage's between the 2 grounds being represented as noise in the line.
for instance. I recently installed a new head unit in my truck, the unit has an AUX in and a USB port. If i plug my E4GT aux cable into the stereo and plug the USB charger into the port on the stereo - NO Noise. However, if i plug the phone to charge in another outlet (say, the cig lighter) then there is Line Noise everytime. The same principle applies when plugging your phone audio jack into any electronics.
Hope this helps shed a little light on the noize.
ReFiLL said:
I can only assume the noise you are hearing is due to a Ground Loop/Hum.
It has to do with the fact that your power source is grounded to a different point than the stereo/speakers. the hum you hear is the difference in voltage's between the 2 grounds being represented as noise in the line.
for instance. I recently installed a new head unit in my truck, the unit has an AUX in and a USB port. If i plug my E4GT aux cable into the stereo and plug the USB charger into the port on the stereo - NO Noise. However, if i plug the phone to charge in another outlet (say, the cig lighter) then there is Line Noise everytime. The same principle applies when plugging your phone audio jack into any electronics.
Hope this helps shed a little light on the noize.
Click to expand...
Click to collapse
I hear you, except that I have two different docks that display entirely different behavior. Actually, I have two docks from the same manufacturer (Samsung, for the Epic and the Epic Touch) that have significant line noise, and one (Motorola) that does not. Note that these are all plugged into exactly the same power adapter and outlet and using the same USB and audio cables.
So, you'd need to account for the fact that the Motorola signal is perfectly clean in precisely the same circumstances while the Samsung's signal isn't.
I believe every word of it.
From what I know about Ground Loop Hum there are many weak links in the chain, and certainly some products behave better than others. The problem is still most likely the Ground.
One possibility would be that the manufacturer of the Moto Dock has included an isolator in the power supply line (or even in the audio supply line), and the manufacturer for the Sammys didnt.
My experience in this subject is with my Laptop/DJ setup making noise when plugged into audio equipment. when the power supply was plugged into the lappy, 60hz hum. Unplug it and it goes away. More than likely the problem was inside the computer or the power supply was just poorly manufactured as other models may not have the Hum. In my case i purchased a small isolater solved the problem. It may be possible to find one for a 12v car electrical system.
ReFiLL said:
I believe every word of it.
From what I know about Ground Loop Hum there are many weak links in the chain, and certainly some products behave better than others. The problem is still most likely the Ground.
One possibility would be that the manufacturer of the Moto Dock has included an isolator in the power supply line (or even in the audio supply line), and the manufacturer for the Sammys didnt.
My experience in this subject is with my Laptop/DJ setup making noise when plugged into audio equipment. when the power supply was plugged into the lappy, 60hz hum. Unplug it and it goes away. More than likely the problem was inside the computer or the power supply was just poorly manufactured as other models may not have the Hum. In my case i purchased a small isolater solved the problem. It may be possible to find one for a 12v car electrical system.
Click to expand...
Click to collapse
I actually hooked up an old RadioShack groundloop isolator to the AUX cable, and it got rid of the hum.
Something like this should work fine: http://www.amazon.com/GROUND-LOOP-I...QTRI/ref=sr_1_2?ie=UTF8&qid=1322958491&sr=8-2
ReFiLL said:
I believe every word of it.
From what I know about Ground Loop Hum there are many weak links in the chain, and certainly some products behave better than others. The problem is still most likely the Ground.
One possibility would be that the manufacturer of the Moto Dock has included an isolator in the power supply line (or even in the audio supply line), and the manufacturer for the Sammys didnt.
My experience in this subject is with my Laptop/DJ setup making noise when plugged into audio equipment. when the power supply was plugged into the lappy, 60hz hum. Unplug it and it goes away. More than likely the problem was inside the computer or the power supply was just poorly manufactured as other models may not have the Hum. In my case i purchased a small isolater solved the problem. It may be possible to find one for a 12v car electrical system.
Click to expand...
Click to collapse
Well, the salient point is that Samsung uses inferior components. It's possible to make a device that doesn't suffer from the problem, as Motorola has shown.
DevalB said:
I actually hooked up an old RadioShack groundloop isolator to the AUX cable, and it got rid of the hum.
Something like this should work fine: http://www.amazon.com/GROUND-LOOP-I...QTRI/ref=sr_1_2?ie=UTF8&qid=1322958491&sr=8-2
Click to expand...
Click to collapse
Thanks, I'll give that a try.
Sent from my SPH-D710 using Tapatalk
most times I've had line noise, be it from improper grounding or from cellular interference (namely from ground issues) the ferrite core fixed it. If it doesn't, the power isolation will. The reason the USB Ports on the head unit doesn't create line noiseis because it has isolation circuitry built in. The core is cheap. If that doesn't work, isolate power.
Sent from my SPH-D710 using XDA App
Okay, in the latest saga with the Samsung car dock, I noticed this morning that when I received a Bluetooth phone call, the TuneIn Radio audio I was playing didn't stop. Or, rather, it did stop once the stream buffer ran out, because I was on 3G and of course 3G data isn't available during calls.
Is this really how the Samsung dock works, that audio doesn't give way to Bluetooth calls? Or is that perhaps the CarHome Ultra app?
Still a bit frustrated with this aspect of the Epic Touch. The Photon's car dock works perfectly, including muting audio while on a Bluetooth call.
Grrr. I know, I know, if I like the Photon's car dock so much, why I don't I just stick with that phone... But seriously, Samsung, how hard is it to get this right?
wynand32 said:
Okay, in the latest saga with the Samsung car dock, I noticed this morning that when I received a Bluetooth phone call, the TuneIn Radio audio I was playing didn't stop. Or, rather, it did stop once the stream buffer ran out, because I was on 3G and of course 3G data isn't available during calls.
Is this really how the Samsung dock works, that audio doesn't give way to Bluetooth calls? Or is that perhaps the CarHome Ultra app?
Still a bit frustrated with this aspect of the Epic Touch. The Photon's car dock works perfectly, including muting audio while on a Bluetooth call.
Grrr. I know, I know, if I like the Photon's car dock so much, why I don't I just stick with that phone... But seriously, Samsung, how hard is it to get this right?
Click to expand...
Click to collapse
I wonder if it might be the phone or the application. When listening to Sirius/XM radio without a dock, and I get a phone call, the radio keeps blasting away.
You don't stick with that phone because this one is superior in every other way. Its a minor issue. Why would you even have the aux input selected when there is no music playing? I have the noise too so I get it but ...yeah I just change the input when I don't need it.
Sent from my SPH-D710 using XDA App
Can anyone recommend a good 3.5mm Bluetooth adapter for my car.
Sent from my SPH-D710 using xda premium
I got the scosche by adapter from walmart for $36. It plugs into the 3.5mm jack and works well for audio streaming. Calls not so much.
Dicho por el E4GT de Latinmaxima con Tapatalk.
All bluetooth adapters suck. I've tried 10+ different A2DP capable adapters over the course of 2 years and all simply ruin the high frequencies. Nothing beats hardwired Aux cable if you actually care about sound quality...
Google "tunelink"
A little pricey, but worth it for the audio quality. Plus, it is only for streaming audio.... No speakerphone function...
pojieps said:
Google "tunelink"
A little pricey, but worth it for the audio quality. Plus, it is only for streaming audio.... No speakerphone function...
Click to expand...
Click to collapse
Sorry, but this is just a gimmick for those without knowledge in my opinion. Other than the bluetooth function, which there are a million of those out there, a person could just plug a male to male 3.5mm stereo plug into the phone to the AUX port in the car if its available.
chrisnosleep said:
Sorry, but this is just a gimmick for those without knowledge in my opinion. Other than the bluetooth function, which there are a million of those out there, a person could just plug a male to male 3.5mm stereo plug into the phone to the AUX port in the car if its available.
Click to expand...
Click to collapse
I actually own it... I get WAY better quality over the bluetooth connection than I do with a direct line in. The headphone jack on your phone is designed for just that... headphones. Lining in directly reflects this. Wish there was a way for you to give it a try. I am kind of a sound snob, and I love mine. Plus, all you have to do is get in the car and once the bluetooth pairing happens, the app will open your music app and start playing.
Not trying to push this thing on ya. Just wanted you to know, I own one, and I am not "without knowledge"
Motorola Rokr T505 is small, does well with calls and music playing through blank FM stations to your car stereo. Best $40 investments plus NO CHORDS!
I had this one and used it with my EVO. Worked pretty well.
http://www.amazon.com/Miccus-BluBridge-Mini-Jack-Bluetooth-Bluetooth-Enabled/dp/B0038MA11U
I tried an AUX cable on three different phones. There was always a high pitched whine through my speakers. I started using a Samsung HM3500 plugged into the same AUX jack and got better quality music with no whine. Plus, no extra cable running through my car to the dash mount.
Did you guys all just have a car stereo that had bluetooth built in? I have an '05 Bonneville GXP but the stereo has neither a aux port or bluetooth capability...Major sad face...I really don't want to replace the stereo either because it's nice and fits the look of the car - would look stupid with anything other than a big touchscreen replacement and that's just too expensive.
Any suggestions?
You could get an FM modulator that would allow you to add a line in via your radio antenna, but they don't have great sound quality.
DutchDogg54 said:
Did you guys all just have a car stereo that had bluetooth built in? I have an '05 Bonneville GXP but the stereo has neither a aux port or bluetooth capability...Major sad face...I really don't want to replace the stereo either because it's nice and fits the look of the car - would look stupid with anything other than a big touchscreen replacement and that's just too expensive.
Any suggestions?
Click to expand...
Click to collapse
Yes, just swap out the headunit for one with bluetooth build-in. Just make sure it supports A2DP (music streaming over bluetooth). I got mine from Amazon for $140, Sony MEX-BT3900U, and it been simply great. A2DP for bluetooth streaming, Aux port for wired 3.5mm audio, and it has USB port for charging the phone.
High Pitched whine is a POWER ISSUE
unplug your phone and it should go away. IE change chargers.
nerys71 said:
High Pitched whine is a POWER ISSUE
unplug your phone and it should go away. IE change chargers.
Click to expand...
Click to collapse
Not all the time. My car had that problem and there were many other factors at fault.
Here are few things to look out for:
If your car has an amplifier in the rear, make sure that the headunit-to-amplifier audio cables are at least few feet away from power wires (aka, run them on the opposite side of the car than the power cables).
Make sure that the headunit is properly grounded. If that still doesn't help, run both headunit's + and - power wires directly to the car battery.
If problem still persists, repeat #2 but for the amp (if you have it).
If all above failed, it's time to invest in a better headunit. Your old one sucks and can't suppress the noise generated by the chassy/alternator.
I had crappy stock headunit and weaka$$ stock amp that would always make the static and constant whine problems. Ended up completely redoing the car audio system. Now, even with the headunit not grounded audio quality is PERFECT.
Here are the prices for my audio remodeling, all items bought brand new:
- Sony MEX-BT3900U. Headunit with CD, Aux, Handsfree Phone, Bluetooth A2DP audio, USB ($140)
- Hifonics ZXi80.4. Amplifier with 4 channels, 80W RMS per channel ($134)
- Alpine SPS-600 speakers. 6.5" 2-way speakers, 80W RMS ($50 ea)
- Stinger Pro 3 Series Snake. 6-channel, 20 feet RCA snake that goes from headunit to the amp in the rear ($35)
- 2x22' 8AWG battery-to-amp power wire
- 2x18' 12AWG amp-to-headunit power wire
- 4x18' 16AWG amp-to-front speaker wires
- 4x2' 16AWG amp-to-rear speaker wires
- 30A fuse in the engine bay
I ran the power cables on the left side of the car and ran the RCA snake on the right. everything was exactly $525 and I did all work myself (it's quite easy if you ask). now the sound quality in my used-to-be-audio-hell car is dam near perfect now and has absolutely no noise/static at all. you can jack the volume up crazy high without any distortions for like 80Hz+. 80Hz and below can be a problem when maxing out the volume as the speakers are only 6.5" and weren't meant to deliver bass. don't get me wrong, they do make nice bass but just don't handle it too well when playing it very loud.
after years of running this setup I'd say this was one of the best investments i've ever made. my car is built for drifting so it is setup very stiff and shakes/jumps like crazy when dailying (300mi/week) and when i do take it out for a spin the amount of stress it sees it crazy. after all this time you'd think at least some wires would come loose but nope, everything is still running perfect.
so yeah, if you actually care about sound quality in your car and would like it to last, just redo it from scratch. it's fun and is totally worth it
Not trying to pick a fight but lets be clear here
If your car has an amplifier in the rear, make sure that the headunit-to-amplifier audio cables are at least few feet away from power wires (aka, run them on the opposite side of the car than the power cables).
Which is a power issue
Make sure that the headunit is properly grounded.
Which is a power issue
If that still doesn't help, run both headunit's + and - power wires directly to the car battery.
Which is a power issue
If problem still persists, repeat #2 but for the amp (if you have it).
If all above failed, it's time to invest in a better headunit.
Which is a power issue
Your old one sucks and can't suppress the noise generated by the chassy/alternator.
Which is a power issue
See what I mean?
Cars make a lot of "NOISE" this noise is a power issue. it comes from your alternator and your coil and your spark plugs IE "POWER ISSUES"
if you have bad grounds or are lacking noise suppression (cheap equipment old equipment etc.. etc..) or an older car making a TON of extra noise etc.. etc..
Power inverters (especially cheap ones) are notorious for "dirty power" that lets in noise.
when I power my phone off the USB on the cheap inverter's USB port I get big time whine noises painful even.
use the USB port in the radio and I get no noise (but then it tries to "READ" the phone instead of just charging it and won't let me use aux hehe
Sometimes you can get a coil thing to add to power to reduce this noise but usually its just cheap equipment ($7 power inverter
plug a 110v to usb adapter into same inverter and no noise. The 110v adapter isolates and prevents the noise leakage.
nerys71 said:
Not trying to pick a fight but lets be clear here
Click to expand...
Click to collapse
haha time to clear up a misunderstanding here. my reply was referring to the "unplug your phone and it should go away" statement and thus assuming that you, by saying "its a power issue", were referring only to the inverter that was powering the phone at times getting a better quality inverter (aka, one that has capacitor or capacitor-pack to smooth out the voltage spikes and noise) is sufficient and at times it is not. I've experienced both. it's also worth mentioning that after redoing my sound system even the crappiest of crap inverters works just fine
frifox said:
Yes, just swap out the headunit for one with bluetooth build-in. Just make sure it supports A2DP (music streaming over bluetooth). I got mine from Amazon for $140, Sony MEX-BT3900U, and it been simply great. A2DP for bluetooth streaming, Aux port for wired 3.5mm audio, and it has USB port for charging the phone.
Click to expand...
Click to collapse
Yeah, I've looked into those kind of replacements...plenty out there for reasonable prices but they would completely mar the aesthetic value of the nice interior of my Bonny. That's why I was saying that only the touchscreens that would fill the whole double (might be 1.5) din stereo spot in my car would do.
Thanks, both of you guys, for your responses...guess I'm stuck waiting till I get a much newer car
I'm not saying that you're wrong about it being a power issue, but the BT headset I mentioned came with an adapter for an AUX jack and that solved my problem. So, either solution works.
the issue is the radio is connected to the same "power source" that your "phone" is now connected to.
so if any component in that chain does not control the power noise (that is what the noise is coming from your power system)
you INJECT that noise into your audio stream the moment you "link" the devices together (power not audio)
this is why if you use a seperate battery pack to charge the phone you will not get this noise. your battery pack is "isolated" from the car's power system literally physically.
I am only talking about the typical whine pop crackle high pitched noise you get the moment you plug in your charger. IE clear no noise plug in chargers Head burster sounds start coming out of your speakers
that noise is a "power issue" you can't eliminate the power issues (except by eliminating your alternator??) but you can filter it. some devices (chargers) do this better than others
the BT unit works because you "broke" the chain. (no audio cable going from the PHONE to the RADIO)
Again, I'm not denying what you're saying. You're absolutely correct. However, OP was asking for the best BT unit to plug into the jack, not how to solve the issues with cables and power sources. I was simply providing my opinion and experience along the lines of what he was asking for.
I installed this unit in wife's 2018 Highlander today. It sounds great if wifi is switched off, or if it's on and no data is flowing. I am using Network Mini to monitor data, and as soon as data is going up/down, the crackling starts.
I've reached out to Dasaita and am awaiting a reply
I have grounded the black wire with the ringlet directly to the frame but it makes no difference. I have NOT grounded the radio chassis yet. Also the noise goes away when the unit isn't crammed into the dash. When all the wires are in close proximity to radio is when it picks up
Anyone seen this issue. Love the radio otherwise...
Video:.
https://youtu.be/NhSzLh7CD_0
Wow - that's REALLY bad... I'm starting to get a little fed up with the interference noises from my Eonon MTCE-WWW unit as well. I don't have any issues when using the internal amp, but if I connect to an external amp with the line-out RCAs, I get interference from USB devices, the LED backlighting on the unit, etc. It's shame becuase I love the idea of an Android unit, but not sure I can deal with the subpar quality issues....
Going to try connecting to my amp via speaker-level outputs next and see if that helps at all.
Do you have a stock or aftermarket amp in your vehicle?
Cracks and noises for me as well with my Belsee BP3 PX5 unit.
For me too the noises seem to fade away when I turn off WiFi.
I upgraded the firmware of the unit with a Cs-x sound mod one (there's an recente one for Dasaita too) and it seem to have reduced the issue
https://forum.xda-developers.com/an...ent/mod-cs-x-mod-mtcd-e-mcu-firmware-t3816042
Maybe you can check this out ?
TheDiB said:
Cracks and noises for me as well with my Belsee BP3 PX5 unit.
For me too the noises seem to fade away when I turn off WiFi.
I upgraded the firmware of the unit with a Cs-x sound mod one (there's an recente one for Dasaita too) and it seem to have reduced the issue
https://forum.xda-developers.com/an...ent/mod-cs-x-mod-mtcd-e-mcu-firmware-t3816042
Maybe you can check this out ?
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I suppose I could try updates, but I don't hold out much hope given that the problem seems to be related to proximity to the wifi antenna. It did this on the stock rom, as well as the Hal9k variant.
I'll update this thread if I manage to find an improvement.
The alternate sound-patched MCU's didn't make any difference whatsoever on my Eonon MTCE-WWW unit. I tried both the cs-x version and the wazdio verion. Same noise-related issues. You may help "hide" them a little by turning down the pre-amp value, but you can also do that with the stock MCUs, under the Factory Settings "Voice" tab.
To put it simply, I think they just use low-quality components with limited R&D - which is why these units are so inexpensive compared to more premium brands of plug-and-play units like Rosen, Dynavin, etc (they run WinCE though).
If using speaker-level outputs on the Eonon doesn't help in my case, I'll probably be going back to a WInCE unit, just becuase they seem to have much higher-quality audio components (better DAC's, 4V pre-outs, BBE processor, real 9-band EQ, time-delay, etc). I was really looking forward to an Android head-unit, but I'm just not willing to sacrifice sound quality to get the Android interface. Viper4Android helps a LOT in terms of sound-quality, but it can't help with the noise-related issues, which are more of a hardware thing...
Maybe some day they'll get there. I really wish they made low- and high-end versions of these radios - that way people had a choice between low-cost and high-quality.
That's a shame, as there is so much potential. I have a Hizpo PK5 in my (JBL-equipped) Sequoia, and it's completely noise-free. But this Dasaita for the Highlander is just very loud. It seems like it's a shielding issue. As stated previously, if I keep the head unit out with all the cables extended, the sound stops. I'm halfway tempted to buy an SMA wifi antenna with a cable long enough to get the RF signal away from the wires. The sound is exclusive to the left channel (both front and rear).
@TheDiB, missed your prior question. It's a JBL-equipped vehicle.
Yeah, your particular noise is REALLY bad (mine is more of something that you only hear if the music is muted or during really quiet parts of the music - and only in certain cases (but it still bothers me knowing that it's there).
Being that you can stop the noise by pulling the radio out, you may be able to figure out what is causing it. Maybe try disconnecting the AM/FM antenna to see if that has anytihng to do with it - I've read some cases where hte antenna was causing interference. Or just re-routing some of the wiring - or something along those lines.
In my case, the noises are present no matter what - but only if I use the RCA line-level outputs and an extrnal amp. If I use the stock built-in amp, there is no noise whatsoever. So mine seems to be related to the RCA line-level output hardware (shielding related, I'm guessing).
I would experiment some more if you are happy with the radio and sound-quality otherwise.
I'm hoping I hear something helpful back from Dasaita in the coming days. On this particular unit, the wifi antenna comes out about 1/2" above the main ISO plug for the radio. I suppose I could relocate the antenna by running the existing bulkhead SMA fitting through a screw hole elsewhere on the case to provide more distance. I'm not giving up yet The other issue is that it's the wife's car, so my access to it is limited.
I'm not using line-level outputs. The four pairs for the speaker output comes out of that ISO plug, and goes straight to the Toyota harness. Fader control (as well as a bunch of other controls/data) goes through the can bus adapter. But ultimately, those four speaker pair end up at the factory JBL amplifier.
Aside from the noise, the audio quality is equivalent to the stock radio. But, I'm not an audiophile, and I have the opposite of OCD...
So your stock JBL amp actually accepts speaker-level inputs? Usually, amps take line-level inputs. With the Eonon MTCE-WWW units for GM's, if your car has a stock Bose amp, there is a special "Bose adpater" that connects to the same port where you would connect the line-level RCA jacks for aftermarket amps, which is line-level - but instead of having RCA jacks at the other end, it just connects into the main wiring harness, so I guess it sends line-level signals through the speaker wires, to the Bose amp - and then the Bose amp amplifies them (that is just a guess though, based on the fact that the audio is coming from the same port that is used for an external aftermarket amp, which is line-level).
So the wiring harness you use for yours is exactly the same regardless of whether the car has a stock amplifier or not? Or maybe it's not an option on your car and they ALL come with JBL amps? Just trying to understand your setup a little better. Do you have a link to the unit you purcahsed?
jtrosky said:
So your stock JBL amp actually accepts speaker-level inputs? Usually, amps take line-level inputs. With the Eonon MTCE-WWW units for GM's, if your car has a stock Bose amp, there is a special "Bose adpater" that connects to the same port where you would connect the line-level RCA jacks for aftermarket amps, which is line-level - but instead of having RCA jacks at the other end, it just connects into the main wiring harness, so I guess it sends line-level signals through the speaker wires, to the Bose amp - and then the Bose amp amplifies them (that is just a guess though, based on the fact that the audio is coming from the same port that is used for an external aftermarket amp, which is line-level).
So the wiring harness you use for yours is exactly the same regardless of whether the car has a stock amplifier or not? Or maybe it's not an option on your car and they ALL come with JBL amps? Just trying to understand your setup a little better. Do you have a link to the unit you purcahsed?
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It must, because I'm not using any coax/low-level outputs. In fact, I haven't hooked up most of the pigtail connectors. The ISO harness has about 5 or 6 connectors that are used, and about as many that aren't (presumably for the non-JBL vehicles). I think the Toyota JBL set up is much like the Bose you described. In a previous Tundra, I had to buy an adapter that would convert the two-pair per speaker wires to RCA plugs which I could then use to connect my aftermarket radio (to use the low level outputs). That converter (made by Metra or Scoche, IIRC) also somehow tied into the canbus to power the amp and control the fader.
Ultimately with this PX5, I'm using the purple/green/gray/white speaker level outputs to go directly to the factory harness. No adapter in between. I can only assume the JBL amp is designed to accept this somehow. Both my Sequoia and now this Highlander are set up the same way.
Well, I am happy to report that I was able to resolve the noise by replacing the Dasaita wifi antenna with a full-sized SMA-equipped antenna from an old Asus router. The antenna was a female SMA, so I had to slip a small copper conductor into it so it would interface with the female SMA bulkhead on the radio - but once I did that, ALL the noise disappeared! So either something is wrong with the antenna they provided, or it's simply dumping too much RF right on top of the ISO connector with all the speaker outputs. Whew!
Very cool! Glad to hear that you got it resolved. So is the antenna now further away from the ISO connector - or is it just becuase it's a different antenna? You may to get an adapter or an antenna with the right connecter for long-term use (instead of using the wrong gender anteanna with a piece of copper wire installed).
Regardless, glad to hear that you figure it out! I wish my noise-related issues were so easy to solve.
Although, I did some brief testing this morning and it seems that using the speaker-level outputs is better than using the line-level outputs on mine (for connecting external amp). The noises are still there, but they aren't as loud when using speaker-level outputs for my external amp (usually, it's the other way around with higher-quality head-units).
These units are so close to being really good - it's a shame they have these noise-relasted issues...
jtrosky said:
Very cool! Glad to hear that you got it resolved. So is the antenna now further away from the ISO connector - or is it just becuase it's a different antenna? You may to get an adapter or an antenna with the right connecter for long-term use (instead of using the wrong gender anteanna with a piece of copper wire installed).
Regardless, glad to hear that you figure it out! I wish my noise-related issues were so easy to solve.
Although, I did some brief testing this morning and it seems that using the speaker-level outputs is better than using the line-level outputs on mine (for connecting external amp). The noises are still there, but they aren't as loud when using speaker-level outputs for my external amp (usually, it's the other way around with higher-quality head-units).
These units are so close to being really good - it's a shame they have these noise-relasted issues...
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I didn't move the bulkhead SMA fitting. I would have had to break the factory seal, and I didn't want to jeopardize warranty just yet. The antenna I added is about 4x longer than the stubby they provided, so I suppose it is spreading the RF over a larger area. It has a hinge on it and if I aim it straight back the noise is still present. Bending it 90° away from the harness makes it totally silent - and there is no depreciation in the signal strength.
I have ordered a gender changer and a 3" SMA extension cable from Amazon, but I probably won't install it unless the problem returns. I figure why rock the boat.
Is the noise you're experiencing related to data transmission? Does it stop if you disable the wifi? I'm wondering if wrapping the first few inches of the wiring bundle with copper tape wouldn't provide shielding against induced RF noise.
Ah - I see. Interesting - so just a different antenna resolved your issue. Like you said, I guess it's spreading out the signal enough to avoid causing the interference. I'm sure someone else will find that info very useful in the future!
My noise issues are not realted to wifi. I have interference noises in the following situations:
1. If car is not running and radio LED backlighting is on (cuases a hum through the speakers). Mainly only noticeable when no music is playing (between songs, for example) or when there are very quiet parts of the music.
2. When using my headrest monitors.
3. Anytime the system accesses USB devices. The interference is pretty noticeable when reading/writing USB thumb drives - especially if they have LEDs on them.
4. If I my Eonon USB dashcam is active, it makes a strange intference noise from the speakers. Again, really only noticeable when no music is playing, but...
None of these are huge issues in of themselves, but at the same time, it just bothers me knowing that the interference exists. I've also noticed that the overall sound quality just isn't as good as my previous WinCE-based head-units - (much more expensive units - they have 4v preouts, higher-quality DAC's, etc) - even when using an external amplifier. Never had interference noises with them, so the Android unit is really a downgrade in terms of sound-quality, which is more important to me than having Android, I guess. I was hoping that there woulnd't be much difference in sound quality when using an external amp, but there still is...
At first, I thought the Android head-unit was awesome while testng "on the bench" - until I connected it in-car and used it for a few days, then I started noticing all of the "cons" (warning chimes and turn-signal sounds are horrible, button backlighting doesn't dim with the rest of the interior lights when dimmed, screen isn't as nice or as bright as previous units, super-reflecitive screen, the noise issues mentioned above, no true dual-zone for my headrest monitors, no XM tuner, having to jump through all kind of hoops just to get music to continue playing where it left off when restarting the car, etc). When I add up all of these "cons", I'm just not sure the Android unit is worth it for me. I'll probably be going back to my WinCE head-unit very soon (Dynavin N7 or Rosen GM1010/1210). The WinCE units are not as flexible as the Android units, but the sound quality is more important to me.
I'd *gladly* pay more for a higher-quality Android head-unit, but right now, they just don't seem to exist - which is unfortunate...
jtrosky said:
Ah - I see. Interesting - so just a different antenna resolved your issue. Like you said, I guess it's spreading out the signal enough to avoid causing the interference. I'm sure someone else will find that info very useful in the future!
My noise issues are not realted to wifi. I have interference noises in the following situations:
1. If car is not running and radio LED backlighting is on (cuases a hum through the speakers). Mainly only noticeable when no music is playing (between songs, for example) or when there are very quiet parts of the music.
2. When using my headrest monitors.
3. Anytime the system accesses USB devices. The interference is pretty noticeable when reading/writing USB thumb drives - especially if they have LEDs on them.
4. If I my Eonon USB dashcam is active, it makes a strange intference noise from the speakers. Again, really only noticeable when no music is playing, but...
None of these are huge issues in of themselves, but at the same time, it just bothers me knowing that the interference exists. I've also noticed that the overall sound quality just isn't as good as my previous WinCE-based head-units - (much more expensive units - they have 4v preouts, higher-quality DAC's, etc) - even when using an external amplifier. Never had interference noises with them, so the Android unit is really a downgrade in terms of sound-quality, which is more important to me than having Android, I guess. I was hoping that there woulnd't be much difference in sound quality when using an external amp, but there still is...
At first, I thought the Android head-unit was awesome while testng "on the bench" - until I connected it in-car and used it for a few days, then I started noticing all of the "cons" (warning chimes and turn-signal sounds are horrible, button backlighting doesn't dim with the rest of the interior lights when dimmed, screen isn't as nice or as bright as previous units, super-reflecitive screen, the noise issues mentioned above, no true dual-zone for my headrest monitors, no XM tuner, having to jump through all kind of hoops just to get music to continue playing where it left off when restarting the car, etc). When I add up all of these "cons", I'm just not sure the Android unit is worth it for me. I'll probably be going back to my WinCE head-unit very soon (Dynavin N7 or Rosen GM1010/1210). The WinCE units are not as flexible as the Android units, but the sound quality is more important to me.
I'd *gladly* pay more for a higher-quality Android head-unit, but right now, they just don't seem to exist - which is unfortunate...
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Hello, have you found a solution, how you fix noise ?
jtrosky said:
Ah - I see. Interesting - so just a different antenna resolved your issue. Like you said, I guess it's spreading out the signal enough to avoid causing the interference. I'm sure someone else will find that info very useful in the future!
My noise issues are not realted to wifi. I have interference noises in the following situations:
1. If car is not running and radio LED backlighting is on (cuases a hum through the speakers). Mainly only noticeable when no music is playing (between songs, for example) or when there are very quiet parts of the music.
2. When using my headrest monitors.
3. Anytime the system accesses USB devices. The interference is pretty noticeable when reading/writing USB thumb drives - especially if they have LEDs on them.
4. If I my Eonon USB dashcam is active, it makes a strange intference noise from the speakers. Again, really only noticeable when no music is playing, but...
None of these are huge issues in of themselves, but at the same time, it just bothers me knowing that the interference exists. I've also noticed that the overall sound quality just isn't as good as my previous WinCE-based head-units - (much more expensive units - they have 4v preouts, higher-quality DAC's, etc) - even when using an external amplifier. Never had interference noises with them, so the Android unit is really a downgrade in terms of sound-quality, which is more important to me than having Android, I guess. I was hoping that there woulnd't be much difference in sound quality when using an external amp, but there still is...
At first, I thought the Android head-unit was awesome while testng "on the bench" - until I connected it in-car and used it for a few days, then I started noticing all of the "cons" (warning chimes and turn-signal sounds are horrible, button backlighting doesn't dim with the rest of the interior lights when dimmed, screen isn't as nice or as bright as previous units, super-reflecitive screen, the noise issues mentioned above, no true dual-zone for my headrest monitors, no XM tuner, having to jump through all kind of hoops just to get music to continue playing where it left off when restarting the car, etc). When I add up all of these "cons", I'm just not sure the Android unit is worth it for me. I'll probably be going back to my WinCE head-unit very soon (Dynavin N7 or Rosen GM1010/1210). The WinCE units are not as flexible as the Android units, but the sound quality is more important to me.
I'd *gladly* pay more for a higher-quality Android head-unit, but right now, they just don't seem to exist - which is unfortunate...
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I also wanted to hear if you found out the problem .. since I myself have the same...