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Guys,
Another day, another observation. When you plug in the headphones, do you guys hear a hissing/static/white noise for a couple of seconds initially. I am able to reproduce this every time I plug in my headphones (tried three different sets). I am not too bothered by it because the noise dies after 2-3 seconds. I also witness the same behavior when I pause a song.
I guess I am raising the topic here because am not sure if this is common across all WP7 devices (thereby making this a WP7 issue), if it is only my phone, or if it is common across all Venue Pros.
Thanks for any input.
ZappiestOyster said:
Guys,
Another day, another observation. When you plug in the headphones, do you guys hear a hissing/static/white noise for a couple of seconds initially. I am able to reproduce this every time I plug in my headphones (tried three different sets). I am not too bothered by it because the noise dies after 2-3 seconds. I also witness the same behavior when I pause a song.
I guess I am raising the topic here because am not sure if this is common across all WP7 devices (thereby making this a WP7 issue), if it is only my phone, or if it is common across all Venue Pros.
Thanks for any input.
Click to expand...
Click to collapse
I get the same noise, but mine is constant. Whenever a sound plays, the white noise/hissing in the background comes up and continues for 5-10 seconds after the sound is played and then goes out. Then when another sound happens, it does it again.
It almost makes using headphones unbearable.
I've tried multiple sets of headphones too, it does it on them all.
I think it may have something to do with the curved top of the phone and the fact that the plug doesn't go all the way into the device.
Anybody else have a similar experience?
jfellows said:
I think it may have something to do with the curved top of the phone and the fact that the plug doesn't go all the way into the device.
Anybody else have a similar experience?
Click to expand...
Click to collapse
I don't think it's that - if the curved surface was the culprit, the sound wouldn't vanish after a few seconds. It almost seems like a software issue.
Thanks for confirming the behavior!
I only hear the hissing sound for a few seconds after plugging it in to the jack...
Hearing a hissing on most smartphones is pretty common, in my experience. The better quality earphones you use the more you will notice it. The Nexus One did, the Venue Pro does, my N95 did a bit.
People I've called with the built in headphones/mic say the noise levels are so extreme they are unusable. Hopefully the free Bluetooth headset we're all getting will fix that issue...
Hello!
This is normal when companies use cheap DACs and amps for sound replication. The DAC turns on when you play sounds, and turns off when there's a period of no sound. If it's a cheap system, there's a noticeable base sound/noise that is added to your signal.
When you have music playing, that, of course, is drowned out by the music. Thus, you won't hear it unless you have really soft music, say, a few bars rest in your classical album or something.
The problem also is more noticeable with low impedance earphones (IEMs, for example).
A possible, easy way to fix this is to use an inline resistor/impedance cable on your headphones, since typically this noise does not vary with volume (in my experience). Then, you bump up the volume on your device... if it's powerful enough to do it. Otherwise, you'll have to inline resistor, a clean-sounding portable amplifier (powered by additional), and then your headphones. It gets pretty bulky...
Alternatively! Separate your music player and your phone. Unfortunately, the DVP has such a nice Zune interface. And still, with cheap music players you can hear the hiss if you're careful. I can hear this on iPods with my earphones still...
Sorry to hear about this! I was hoping that the sound quality would be decent. I might try to get an HD7 instead now...
Cheers!
linj said:
Sorry to hear about this! I was hoping that the sound quality would be decent. I might try to get an HD7 instead now...
Cheers!
Click to expand...
Click to collapse
Just to let you know, the HD7 does not have the hissing/static that the DVP does. I've tried the HD7, Samsung Focus and DVP and HD7 had the best sound quality in my opinion. The Focus sounds muffled compared to both HD7 and DVP.
I've got the same hissing noise on mine, but I think it's an issue with a crappy DAC as it's only there when there is sound. I was hoping to replace my Zune HD but there's no way that's gonna happen with this noise - it's AWFUL!
I'm really thinking about moving to a Samsung Focus. I loved this phone when I first got it, but over time I just uncover more and more I don't like.
Arcarsenal said:
Hearing a hissing on most smartphones is pretty common, in my experience. The better quality earphones you use the more you will notice it. The Nexus One did, the Venue Pro does, my N95 did a bit.
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Click to collapse
Very true. Almost every phone I've used has this. It's more noticeable on some phones than others but it's nothing unique to the DVP.
Bringing this back to the top, I've observed something on my new model, though I could have sworn the one I sent back for a refund did not have this problem...and it only occurs with earbuds, and not ear phones (I have a big pair of medium to high quality full-size Creative earphones, the buzzing is not audible at all with them.
Since this phone seems reasonably crash-free, I'm reluctant to press Dell for a replacement, especially if, viola, all the DVPs have this problem. Mine seems particularly loud, but that may be a combination of the Zune Premium earbuds I'm using and other factors. As others said, it vanishes briefly if you pause a song (like the sound output is switching off to save electricity or whatever) but resumes immediately. I might be better off just going through various earphones and finding a brand that's of at least the quality of my current earbuds but minimizes the effect.
EDIT: Additionally, lowering the volume simply makes it much more noticeable.
Hi, does someone have the same experience when connecting a headset to the TF?
I have to adjust the plug very precisely, since it can be pushed further into the device. Otherwise I loose left or right channel.
Is it less than 3.5mm? Or is some of where the wire means the plug (usually chunk of plastic) cut off?
no, it's an almost brand new inear headset which came with my Xperia Neo phone. I assumed the problem being caused by a sloppy assembled connector. If it works fine for everybody else, then it must be an individual defect with my TF
yeah i have a cheap pair of sony headphones and they work fine. just the volume isnt the best....but i know that is a tf issue not a headphone issue.
Yes, volume is a horror. I expected better. Haven't tried volume+ yet, works fine on my android phone.
To be honest, I wouldn't necessarily attribute the volume to the TF101. I have a decent pair of headphones and the volume works fine. Also, I've never noticed anything about the plug being finnicky.
I wasn't complaining about the sound but about the max. volume level. It seems to be a little low on my device. It may comply to some EU laws - I assume.
Anyway since nobody else has issues with the headset connector, I have to check with my dealer.
i'm having a similar issue but not exactly the same.
i used to have a problem with the 3.5" jack only when i plugged it to my surround system- logitech x530. i supposed it was because the signal is being amplified. so when i touched the connection or rotated it at his place it made a lot of loud static noise. i've tried changing cables but the same.
so i've got the lab to replace my transformer's mother board or so, and it is still happening. in fact i've noticed a new problem, this time with just a simple earphones.
when i push the plug a little bit harder into the jack, the sound becomes a bit louder.
wierd stuff... and of course in general the max volume kind of sucks.
I've noticed a similar issue with several of my plug-in phones.... Some work great whilst others either have no sound or mono only.
To me it appears the connector on the TF is simply too picky.
I have a pair of meelectronic A151 armature iems as well as Vsonic GR07, and while i like my music loud, clear, and with a lot of instrument seperation, maxing volume is definitely not needed.
Quick fix would be to flash a Rom/kernel compatible with Supercurio's Voodoo control and install Voodoo. It will be louder and sound clearer.
http://forum.xda-developers.com/showthread.php?p=14914293
Long term fix would be to buy a better pair of iems/headphones. Armatures like the A151s I mentioned above for clarity, a good dynamic driver like Meelec CC51, Sunrise X-cape, if you're a basshead, or VSonic's GR07 if you want a nice combination of both.
I'm quite a bit of an audiophile and while it surely isn't THE best DAC out there, the Wolfson WM8903 is very very good.
Also, depending on what phones you're using, you may just need an external amp, especially if their impedance is rather high.
Edit: I realize I went more into the sound aspect, as it was also being discussed above, but all my iems fit my TF snug just like all my other devices.
Sent from my HTC Eva 4G using Tapatalk
If anything mine is too tight a fit, but works perfectly with any headset I've tried.
Friends obviously a LOT of Nexus 7 owners have complained about sound issues, from obviously defective units to the simple issue of volume being inadequate for use
My question is what is "normal" on this device? anyone know a db / sound-pressure at radius specification?
other than obvious noise through a speaker, how does anyone know if their unit is "normal" ?
cognus said:
Friends obviously a LOT of Nexus 7 owners have complained about sound issues, from obviously defective units to the simple issue of volume being inadequate for use
My question is what is "normal" on this device? anyone know a db / sound-pressure at radius specification?
other than obvious noise through a speaker, how does anyone know if their unit is "normal" ?
Click to expand...
Click to collapse
My speaker is defective, and in need of going out for repair/replacement, but the volume seems like it will be fine for my needs once the rattle/vibration is fixed. It only happens at certain frequencies, so I can still get a solid sense of the output level.
Trying to determine the exact db at a specific distance isn't going to do you much good, because it will be based on either the loudest frequency, or 1khz. The 1khz rating is somewhat reasonable to use, but what if there's a massive spike there (and on small speakers, there generally is). Say it could hit 95-100db at 1khz, it still will likely only hit about 5db at 40hz. See where I'm going with this?
I don't know, I could grab my spl meter, and run a whole series of tests at 1 meter in a quasi-anechoic environment (though it's really cold outside here), if you're really that keen on finding out precise measurements of the frequency output over the 20-20 range. Seems a little overboard for a 7" tablet though. I would consider the volume more than adequate for listening to the news, or voip calls, but there isn't a tablet that exists where I would be happy with the sound of the speakers for music.
Of course, I'm kind of picky about these things.
From what I see in the boards, there are three types of view points on the output.
1. Plenty good for normal use.
2. Terribly low for music.
3. Flat out broken, so you can only turn it up half way (the second is my current situation).
Also, don't forget that the speaker is in the back, so you'll have to keep it turned around or bouncing straight off of a hard surface, to get the full output to your ears. Some cases may also significantly reduce the output as well.
more questions: if we presume/conclude "there is a volume problem even when the speakers are not defective", then two follow-on questions:
1. is it JUST speakers?
2. combo of lousy speakers and a problem with the DSP/firmware/software/etc.... ?
I think it is 2 but I'd love to hear a root cause on the whole issue.
with SOME music sources I can get through the speakers a little bit louder response, at FULL volume max'd - than I can with MX Player on a video with the Player set on Volume Boost [200%].
in the case of MX Player, its basically worthless through the speakers both from a dynamics standpoint [obvious...] and just volume unless you are in a stone-quiet area and are craning toward the device to hear.... and you have acutely good hearing.
Then, if one is unconcerned about warranty: anyone have suggestions on replacement speaker that perhaps would help?
cognus said:
more questions: if we presume/conclude "there is a volume problem even when the speakers are not defective", then two follow-on questions:
1. is it JUST speakers?
2. combo of lousy speakers and a problem with the DSP/firmware/software/etc.... ?
I think it is 2 but I'd love to hear a root cause on the whole issue.
with SOME music sources I can get through the speakers a little bit louder response, at FULL volume max'd - than I can with MX Player on a video with the Player set on Volume Boost [200%].
in the case of MX Player, its basically worthless through the speakers both from a dynamics standpoint [obvious...] and just volume unless you are in a stone-quiet area and are craning toward the device to hear.... and you have acutely good hearing.
Then, if one is unconcerned about warranty: anyone have suggestions on replacement speaker that perhaps would help?
Click to expand...
Click to collapse
#2
When I connect the Nexus 7 to my car stereo inline, via the headphone output, I get mixed results. I generally have to crank the car stereo way up, which can cause voltage induction through the 1/8" to RCA connector, if I have the Nexus charging simultaneously.
Now granted, induction of this sort is not something that is a Nexus only problem, and has more to do with the quality of cable shielding. If I move the USB charger so that it doesn't line up with the headphone output wire, the problem is reduced.
However, the issue is more that the headphone output is somewhat inconsistent, so that means that some audio will require me to turn the stereo to a level where the inductance is moot, and sometimes I will have to turn up the stereo to the point where charging and listening to audio through the car stereo is just brutal. Of course, you weren't asking specifically about car audio, but it leads to my theory.
Now, here in lies why I think it's you're "#2". If it were purely hardware, there shouldn't be that great of a difference from the headphone jack, assuming relatively similar reference volumes from the source. So software would seem to be at play here, as well as hardware.
As far as the speakers go, I don't think you'll be able to replace the internals. They're a very awkward shape, which probably doesn't help, and there is very little room in there.
Your best bet would be to find out if there is an external speaker option which can easily work for tablets. I listened to an Ipad 4 last night, and it wasn't good either. I think you have to consider the size of these things. A speaker the size of your pinky nail, can only be asked to do so much. Trying to cram one the size of your thumbnail in there, won't do much more, and just wouldn't fit.
now we're talking real issues. thank you.
yes, compared to any of my other android or pc or apple devices this one is uniquely odd
all as you have noted. inconsistent, output device matters, etc.
I admit I'm skewed by the ipad Mini - if you get a chance, sample that in terms of speaker performance. I have not access to Ipad 4 in my shop.
in my case, there is no distortion that I can observe/detect with my ears - clear enough, but there's not much substance there, oddly except for notifications which are crystal clear at full volume, if not particularly loud [my ancient droid optimus is louder - obnoxiously so which is why I keep it on vibe].
bladebarrier said:
#2
When I connect the Nexus 7 to my car stereo inline, via the headphone output, I get mixed results. I generally have to crank the car stereo way up, which can cause voltage induction through the 1/8" to RCA connector, if I have the Nexus charging simultaneously.
Now granted, induction of this sort is not something that is a Nexus only problem, and has more to do with the quality of cable shielding. If I move the USB charger so that it doesn't line up with the headphone output wire, the problem is reduced.
However, the issue is more that the headphone output is somewhat inconsistent, so that means that some audio will require me to turn the stereo to a level where the inductance is moot, and sometimes I will have to turn up the stereo to the point where charging and listening to audio through the car stereo is just brutal. Of course, you weren't asking specifically about car audio, but it leads to my theory.
Now, here in lies why I think it's you're "#2". If it were purely hardware, there shouldn't be that great of a difference from the headphone jack, assuming relatively similar reference volumes from the source. So software would seem to be at play here, as well as hardware.
As far as the speakers go, I don't think you'll be able to replace the internals. They're a very awkward shape, which probably doesn't help, and there is very little room in there.
Your best bet would be to find out if there is an external speaker option which can easily work for tablets. I listened to an Ipad 4 last night, and it wasn't good either. I think you have to consider the size of these things. A speaker the size of your pinky nail, can only be asked to do so much. Trying to cram one the size of your thumbnail in there, won't do much more, and just wouldn't fit.
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Click to collapse
I just started playing a few games on this Nexus 7, and I turned the volume down to the lowest setting because it is late at night and other people in my house are sleeping. I immediately noticed a soft but very audible static buzz coming from the speakers... about the same volume as the audio itself. I held my ear up to the hardware and confirmed it is both top and bottom speakers.
Anybody else experience this?
copyists sorpeno
I didn't notice at first. Noticed this morning with audio low as well.
I'd like to know if anyone else has this too. Kinda wanna know if its hardware since I purchased at best buy and only have 2 weeks to return.
Yup, I was going to report this too, but since it only occurs at minimal volume I didn't bother. I lost my good headphones so I can test the audio jack. Does it happen to you with them on too?
Btw- if this the trade off with the fantastic (for tablet speakers) surround sound I'll take it. Watch the test video on the Play Videos app.
Sent from my Nexus 7
I don't hear it. on mine. But My hearing is horked.
It's because the Nexus 7 uses a crappy digital volume control that simply reduces the volume of the digital waveform before it hits the DAC, instead of having a real analog volume control -an op-amp that adjusts the volume of the signal before it hits the headphone/speaker amplifier.
What you're hearing is quantization noise as at the lowest volume the audio uses only 2-4 bits of dynamic range instead of the full 16 (or 24, dunno what DAC is in this thing). It's the same as the bit-crushing effect you hear in some dubstep and other electronic music that degrades the audio into a robotic crunchy mess, only here it's not on purpose, it's just cheap design.
There is nothing you can do about it.
I've also noticed this (at first I was like, WTF? Is it raining in my game?). If what was said above is true, that makes me sad that nothing can be done about it.
siraltus said:
It's because the Nexus 7 uses a crappy digital volume control that simply reduces the volume of the digital waveform before it hits the DAC, instead of having a real analog volume control -an op-amp that adjusts the volume of the signal before it hits the headphone/speaker amplifier.
What you're hearing is quantization noise as at the lowest volume the audio uses only 2-4 bits of dynamic range instead of the full 16 (or 24, dunno what DAC is in this thing). It's the same as the bit-crushing effect you hear in some dubstep and other electronic music that degrades the audio into a robotic crunchy mess, only here it's not on purpose, it's just cheap design.
There is nothing you can do about it.
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I'm not sure how you know that but if you're right I guess that means it would happen on all of them... which.. sucks.. Is there anyone that doesn't have this issue to disprove this?
smurfqq said:
I'm not sure how you know that but if you're right I guess that means it would happen on all of them... which.. sucks.. Is there anyone that doesn't have this issue to disprove this?
Click to expand...
Click to collapse
I'm a professional audio engineer, I know exactly how these things work. Most cheap devices do volume controls that way, because adding a dedicated op-amp for analog volume control increases costs of the device, and the Nexus 7 is a budget device.
It does happen on mine, too, in every app that plays sound.
I love when pros come in here and give the technical explanation haha hats off to you, sir!
Sent from my Samsung Galaxy S4 using Tapatalk 4 Beta
siraltus said:
It's because the Nexus 7 uses a crappy digital volume control that simply reduces the volume of the digital waveform before it hits the DAC, instead of having a real analog volume control -an op-amp that adjusts the volume of the signal before it hits the headphone/speaker amplifier.
Click to expand...
Click to collapse
As the others have said, thanks for the explanation. Nice to hear from somebody who understands it, and if the problem is present in all units that actually makes me feel better since I don't have to worry about returning my otherwise perfect unit.
Question though, how come I don't hear the static when using headphones, even on the lowest volume settings where I hear the static from the built-in speakers? That makes me think it's related to the speakers and not the audio hardware... but you obviously know more than me on this.
mrmartin86 said:
I've also noticed this (at first I was like, WTF? Is it raining in my game?). If what was said above is true, that makes me sad that nothing can be done about it.
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Click to collapse
Yeah, funny thing is the first game I played was Bad Piggies on some levels with an ocean tide moving back and forth at the bottom of the screen. I thought the static was the tide sounds... until I heard it in another game too.
tweaked said:
I don't hear it. on mine. But My hearing is horked.
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It only happens at the absolute lowest volume setting... i.e. one notch up from muted. It sort of happens at the next notch up too, but is most noticeable at the quietest setting, and you need to be in a quiet room. I only noticed because I was using the device in a small echoey mostly tile room (you can probably guess where) and because of the room having such acoustics I put the device on the lowest setting just above mute.
Had something like this on my original nexus 7
Except it happened regardless of the volume setting. Wasn't that audible- had to put my ear against the speaker to really hear it, but it did interfere with other devices, such as my radio, or keyboard with a head phone jack. It would make a sound like a quick DUH-DUH-DUH-DUH-DUH-DUH...DUH-DUH-DUH-DUH-DUH-DUH. My nexus 4 can sometimes cause static interference with other devices, too. Haven't gotten the new nexus 7 so I cannot say whether or not my new one has this issue
Well.. mine's not only happening at the lowest volume notch. If I put it to my ear (never actually going to do this for normal use) it's there at every volume level, just hard to hear once whatever I'm playing gets loud enough. The display unit at a local best buy does the same. I can hear it in a quiet room at the first couple notches (normal use), which is annoying. Also, since someone asked - No it doesn't happen through headphones.
The111 said:
As the others have said, thanks for the explanation. Nice to hear from somebody who understands it, and if the problem is present in all units that actually makes me feel better since I don't have to worry about returning my otherwise perfect unit.
Question though, how come I don't hear the static when using headphones, even on the lowest volume settings where I hear the static from the built-in speakers? That makes me think it's related to the speakers and not the audio hardware... but you obviously know more than me on this.
Click to expand...
Click to collapse
My pleasure! There's tons of FUD on XDA about many things, so I try to contribute on stuff I know well to reduce that.
Without looking at the schematics of the thing I can only guess:
The speaker amplifier is probably just a simple design that outputs 100% power all the time, so you have to control the volume of the signal that enters it, whereas the headphone amp probably has an integrated analog volume control.
A volume control is much easier (read: cheaper) to do in an integrated chip with low power signals (headphone out) than higher power (speaker out), and again, cheaper was the way to go with the Nexus 7.
Hence, there are two separate outputs from the audio chip - one that feeds the speaker amplifier and uses the bit-crushing digital volume control, the other outputs full-scale audio to the headphone amplifier which controls the volume in analog.
siraltus said:
My pleasure! There's tons of FUD on XDA about many things, so I try to contribute on stuff I know well to reduce that.
Without looking at the schematics of the thing I can only guess:
The speaker amplifier is probably just a simple design that outputs 100% power all the time, so you have to control the volume of the signal that enters it, whereas the headphone amp probably has an integrated analog volume control.
A volume control is much easier (read: cheaper) to do in an integrated chip with low power signals (headphone out) than higher power (speaker out), and again, cheaper was the way to go with the Nexus 7.
Hence, there are two separate outputs from the audio chip - one that feeds the speaker amplifier and uses the bit-crushing digital volume control, the other outputs full-scale audio to the headphone amplifier which controls the volume in analog.
Click to expand...
Click to collapse
Makes sense. Thanks again.
siraltus said:
My pleasure! There's tons of FUD on XDA about many things, so I try to contribute on stuff I know well to reduce that.
Without looking at the schematics of the thing I can only guess:
The speaker amplifier is probably just a simple design that outputs 100% power all the time, so you have to control the volume of the signal that enters it, whereas the headphone amp probably has an integrated analog volume control.
A volume control is much easier (read: cheaper) to do in an integrated chip with low power signals (headphone out) than higher power (speaker out), and again, cheaper was the way to go with the Nexus 7.
Hence, there are two separate outputs from the audio chip - one that feeds the speaker amplifier and uses the bit-crushing digital volume control, the other outputs full-scale audio to the headphone amplifier which controls the volume in analog.
Click to expand...
Click to collapse
Is this something they can fix (or at least mitigate) in a software update?
paxunix said:
Is this something they can fix (or at least mitigate) in a software update?
Click to expand...
Click to collapse
No, this is how the hardware is designed.
Noticed this too from the speakers regardless of volume, and regardless of what is playing audio. It's a high pitched squeal to my ears which I can't stand. I've thrown out computer power supplies and video cards that have made similar(obviously, louder) noises.
Was hoping it could be something improved in software, but I guess not. Time to sell this.
http://youtu.be/c9aQnuOrTY8
Recorded what it sounds like at lower volumes with a small condenser mic next to it. Let me know if that's similar to what you guys are hearing too.
Hi All.
Have not posted on here in a LONG WHILE, but here goes:
Recently I got my hands on a Note 4 (SM-N910S) (its one of those Korean models that have LTE-A X3)
and when I first got my hands on it it was fine and all, but after a while, whatever earphone I plugged in, it sounded weird, and the only solution was to bias the sound to the left (in PowerAmp, my music app of choice) which somehow centered the sound but it sounded like it was on Mono the whole time as I could not hear the whole range of speakers being used.
Last week I dropped by a repair center and asked for a jack replacement, they charged me 10$ for the part and about 20$ for the labor (I was busy so I said hell with it). After I received it back, There is still a problem
Now what happens is the sound appears to be very muddy, and if, for example I was listening to something with a large variety of sound, like heavy metal or EDM, it sounds really drowned and far away, and the bass seems non-existent at all, and the speakers which seem like they are there for bass and/or sound directed to sort of rear-way are not working at all, and the treble side of things seem very harsh. When I bias the sound to the left now, what happens is the volume seems to decrease!
So before I spend any money on this thing, I want to know if you guys think I still need the jack replaced (this time by me maybe) or if something else is wrong, because I use this phone heavily for music (nearly 30gb worth loaded on it, used very heavily, on the daily) as well as for entertainment purposes, so it is very important to me I get this thing on track.
Any advice is welcome, as I am also quite desperate to solve this issue.
Oh, and the phone is pretty much brand new, got it on christmas/januaryish, and has never been damaged or used hardly, its only been rooted, and is currently on 5.1.1
IF I did post this to the wrong section, mods I am sorry, please feel free to move it.
Thanks in advance to any help. :good:
Have you tried adjusting the sound settings on the music player app? Does this happen with other headsets?
DarkGuyver said:
Have you tried adjusting the sound settings on the music player app? Does this happen with other headsets?
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Click to collapse
Yes I have, as I said, ive tried multiple headsets, and ive tried all the settings and multiple apps. I can tell it is a hardware problem since when I send the sound to the left earphone, it only lowers the volume, but the sound doesn't move/bias.
Why not try a pair of bluetooth headphones. It will establish if there are problems with the sound DAC of the board or if it is a hardware fault pertaining to the headphone jack connectors. If its the sound DCA it might also go away with a reflash of the factory image through Odin.