Database Users

[MOD] Speaker hole enlargement

Hey all, watching some flash videos today made me notice how poorly the N1 puts sound out the back speaker, even compared to my old G1. I remember back in my Blackberry days that people used to mod the backs to "let more sound get out", and so I started looking into this...
First off, the speaker is GINORMOUS in relation to the slit. If you look inside the back where the speaker is, you can see a little internal grille, and the small slit for sound to escape. There's also a TON more room where that grille isnt attached to the back (same shape as the slit, only about 5x the size) that could be milled out pretty easily, and still retain the "keep crap out of the back" feature of the grille.
So, this leaves me with a few questions:
Where can I get a replacement back, in case my mill catches a bit more than I anticipate?
Anyone else interested? I figure if I set up to do one, I might as well bang a few others out instead of setting up multiple times.
Once I get a second back, I will be going at this with pics and hopefully notable improvement in projecting sound into my hand, and back toward my face!
I might not be a software hacker, but when it comes to this sort of thing, I figure its the best way I can give back to the community!

Give HTC support a call and tell them your cover doesn't line up properly(I don't think any of them do) they'll send you out a replacement. If they don't they can sell you one for ten bucks I think.
Hope to hear good results from your mod, might do it myself.

I actually think the small slit does something to amplify the sound..
Take the back off, play music, put it on. Notice it gets louder when you place it back on..
I don't know though, but I'll be following this thread!

Wisefire said:
I actually think the small slit does something to amplify the sound..
Take the back off, play music, put it on. Notice it gets louder when you place it back on..
I don't know though, but I'll be following this thread!
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Yea, I think the OP should test and see if there's even a noticeable difference without the back cover. I would think not...

Try removing the cover, sounds WAY worse.

Yes, I completely realize the back sounds bad off, its acting as a resonator, or isolating front from back waves of the speaker, which causes phase cancellation. Thus why im not removing the cover, just making the one hole bigger. It SHOULD not lose the "low end" that it has with the back on (if you want to call it that.
Either way, Im hacking at least one up, Ill post results!

Do it. (poor phone!)

I would suggest to replace the speaker with a Desire one, some people who have both phones pretend it's way louder on Desire, and yes it's the same form factor and size so it should fit

It is quite a bit louder without the cover but sounds bad due to the lack of resonance.
Shouldnt be too bad with just an enlargement, make sure you put something to block out dust. Let us know how it goes.

I've found that attaching one of these to the back quite useful...

or try a vuvuzela

I think the engineer who designed that whole was well aware of resonance qualities. If you make that whole and turns out better, you should apply to HTC job hehe...

@Hummeroid
Good idea ...
What about drilling mini-holes arround the "slit" ?
Instead of making ONE BIG hole ...

Very Interesting mod idea...I think the small drilled holes would be an effective test.

Or just cup your left hand around the back of the phone.

I looking for the out come of this.
Sent from my Nexus One using XDA App

mrbkkt1 said:
Or just cup your left hand around the back of the phone.
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hah, I've never seen anyone else do it, but I do this all the time if I'm showing people a video or am in a noisy setting (ie. party)

clickwir said:
hah, I've never seen anyone else do it, but I do this all the time if I'm showing people a video or am in a noisy setting (ie. party)
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Nah, everyone does it.. I mostly do it when I want to listen to something quiet, I can turn it down and redirect the sound towards me.

I actually have a really good pair of earphones. I prefer that the main speaker is in the back, instead of in the earpiece like some phones. Prevents earspeaker blowout and call quality is damn good with this phone so far.

mrbkkt1 said:
Or just cup your left hand around the back of the phone.
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Click to collapse
I try to put it up against a wall. Your hand can work to absorb sound waves, thus deadening sound and lowering overall quality; but drywall bounces the sound waves back nearly impeccably. Desks, etc, any hard surface should do the trick.

[Q] Sound when speaker is closed?

Hey guys i'm thinking of getting the surround and wanted to ask people who already have it what happens when you play music/phone rings when the phone is closed? Does the sound come from the hidden speakers? won't that sound muffled? or what? thx!

From what I can tell, even when the phone is closed the sound still comes from the same speakers. So the sound does seem muffled by the front plate of the phone. However, the quality of the sound is still great for a phone even with the speaker closed. If I'm listening to something, I usually leave the speaker slid out though.

frejos said:
From what I can tell, even when the phone is closed the sound still comes from the same speakers. So the sound does seem muffled by the front plate of the phone. However, the quality of the sound is still great for a phone even with the speaker closed. If I'm listening to something, I usually leave the speaker slid out though.
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So it sounds like you like your phone! would you recommend it?
and on a related note, why is there a speaker grill on the back of the phone too? (see attached pic)

I like the weight and feel of the phone compared to the other thiner/lighter models. It feels like a solid well made phone. I definitely use my phone more for music now and really like the Zune integration. The large speaker bar provides crisp clear sound that remains clear at the highest volume. There are three different sound modes (changed by pressing the silver square button on the speaker bar): Normal, Dolby Mobile, and SRS Enhanced.
Overall I like the Surround, I'm a bit disappointed in the lack of customization (true for all WP7 devices) but I expect that will improve over time. I'm also looking forward to some more great apps.
As for the back cover, that appears to be a vent hole as there is no speaker (at least visibly) behind it.
If you are going to get a WP7 and enjoy using your phone for music/media then I think the Surround is a great choice.

Also found this review which has some good pictures of the back cover removed.
http://www.anandtech.com/show/4015/htc-surround-review-pocket-boombox

Hey there,
You don't really notice any muffling of the sound until you slide the speaker out, and even though, I wouldn't say it makes a HUGE difference - a difference yes. I think the phone, while it has a nice solid quality feel, is a bit thick for my liking. Coming from an iPhone 4, then Samsung Galaxy S (super thin), and now this, the Surround almost feels like the Tilt 2. I just ordered the Samsung Focus (I think the HD7 is awesome, but I wouldn't be able to enjoy 3G since I'm on AT&T). I hope the Focus is thinner.

That speaker looking grill is just that, it allows the sound to have an alternative venue to escape in the event that the speakers are covered. Thats what helps keep the sound crisp and clear when the phone is in the closed position. Think if it as a ported sub-woofer box... Well at least thats what the HTC rep told me
CyK1 said:
So it sounds like you like your phone! would you recommend it?
and on a related note, why is there a speaker grill on the back of the phone too? (see attached pic)
Click to expand...
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I thought that's what it was for too, but I don't know if it's very helpful.
If you get this phone and use the alarm like me, just get use to leaving the speaker open. It's not really a big deal.

speaker sound
The speakers sound FINE whether open or closed. There is a grill on the back that helps when the case is closed. I think all this stems from a couple of dim witted no talent reviewers who trashed the entire phone on this one caveat.
Despeite what a few of them say, the phone has great audio, great video, great everything, the phone is NOT bulky, the screen is plenty bright with good saturation, the zune software does a great job of converting videos.
The only limitations of the phone are those of the OS and that will certainly improve over time. In fact there are already 2500 apps available, many for free, that extend the abilities of the phone and you can bet your whiskers MS is working on upgrades right now. Someone just put out an app where you can vote on what improvements you want to see next. There are new apps appearing every day so having the phone is fun....that's what we do here...tinker and maximize our toys until the next one comes out ))))

panflute said:
The speakers sound FINE whether open or closed. There is a grill on the back that helps when the case is closed. I think all this stems from a couple of dim witted no talent reviewers who trashed the entire phone on this one caveat.
Despeite what a few of them say, the phone has great audio, great video, great everything, the phone is NOT bulky, the screen is plenty bright with good saturation, the zune software does a great job of converting videos.
The only limitations of the phone are those of the OS and that will certainly improve over time. In fact there are already 2500 apps available, many for free, that extend the abilities of the phone and you can bet your whiskers MS is working on upgrades right now. Someone just put out an app where you can vote on what improvements you want to see next. There are new apps appearing every day so having the phone is fun....that's what we do here...tinker and maximize our toys until the next one comes out ))))
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Click to collapse
Not to be a pain, but can you stay on topic? We are talking about the sound when you do not slide the speaker out. No offense intended, just saying...
I failed to mention that the sound is definitely muffled when closed. Is it still loud? Yes, it's fine, but definitely better when slid out.

LS980 Speaker issue

Can anyone test if their sound is coming from only one speaker(the left one)? when I cover it with my finger, it gets really low, but the other one does absolutely nothing

Hathoid said:
Can anyone test if their sound is coming from only one speaker(the left one)? when I cover it with my finger, it gets really low, but the other one does absolutely nothing
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Don't call me on this but from what I remember reading there is only one speaker in the bottom and the other side is the mic. I think it was just a symmetry thing.

kevinboards said:
Don't call me on this but from what I remember reading there is only one speaker in the bottom and the other side is the mic. I think it was just a symmetry thing.
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Oh, well if it really is that, then it does indeed make sense. Although it just looks weird, because it does look like 2 speakers.

Yup - just one speaker.

billykxda said:
Yup - just one speaker.
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Thank you for the quick replies! Was getting worried, but I'm good now.

Hathoid said:
Oh, well if it really is that, then it does indeed make sense. Although it just looks weird, because it does look like 2 speakers.
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The speaker is on the right side on the LG G2. The left speaker grill is just another mic inside. I think LG made 2 speaker grills for looks and symmetry.
Its like asking Apple why do they have 2 speaker grills on the bottom of the iPhone 5S when indeed it also only has 1 speaker as well which is on the right side and a microphone on the left side. Most people don't know that and assume Apple provides stereo sound with 2 speakers. Its just an aesthetic thing.

Loudspeaker Quality

As there is no similar topic specially for Loudspeaker I decided to create one.
I like the speakers of the phone sound good and bassy.
Although I had to replace the speakers (repair),
(cuz it got low by it self (hardware defect))
But I noticed the bottom speaker is thinner and more high frequency specialized in the other side the top speaker for low frequency (bass)
Idk if it is hardware fault or it is designed by Sony,
I want to know your thoughts abt the loudspeakers ?

I don't know about Z3, but in the Z2 the top speaker is more clear than the bottom one. I think it's probably some kind of technology. But in the other side, if you're watching a film in horizontal direction, you can hear that everything is happening on the left side and that's annoying.

if the phone gets wet especially the loudspeaker area the loudspeakers stop making sound and thd sound is emitted from some sort of loudspeakers internal to the phone which appears the be louder from the back of the phone.
i listen music in the shower, so thats how i found out. though it was interesting to share

BrainstormPL said:
I don't know about Z3, but in the Z2 the top speaker is more clear than the bottom one. I think it's probably some kind of technology. But in the other side, if you're watching a film in horizontal direction, you can hear that everything is happening on the left side and that's annoying.
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That's kind of weird, my neighbor have the Z2 and he never had such problem, are you sure it's not hardware fault? If my neighbor find such problems he directly comes to me to ask me what's this etc, but I know he don't have this problem cuz u also use his phone to compare etc, so I guess for you its a hardware fault maybe?
raviboy100 said:
if the phone gets wet especially the loudspeaker area the loudspeakers stop making sound and thd sound is emitted from some sort of loudspeakers internal to the phone which appears the be louder from the back of the phone.
i listen music in the shower, so thats how i found out. though it was interesting to share
Click to expand...
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Yeah I also listen to music when I shower and I can confirm that,

oh no dont get me wrong it's not a complaint, im suprised the phone knows when its wet enough to stop the loudspeaker, its a good thing =)

raviboy100 said:
oh no dont get me wrong it's not a complaint, im suprised the phone knows when its wet enough to stop the loudspeaker, its a good thing =)
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Hmm maybe the speakers feel pressure when it gets wet and it shows the volume down / stops the speakers ?

As an audiophile I will say that as a Mobile Loudspeaker it is quite good. Compared to anything else though it is still a low sound quality speaker.
But as a mobile speaker though, it is very good. It is loud, clear and doesn't "break up" that much. It got some bass, but not much.
I think it sounds better with the surround function on. :good:

Its pretty good, but not near the M8. Id say second best of any phone out. I don't get the left/right mismatch many of you have mentioned., I have been through 4 Z3s for cosmetic defects and all sound equal. Maybe its a quality control issue or I have bad ears.

When I go into the service menu and do a test of the speakers, I get the sound coming out of the top/left speaker on both. What's going on there? There is perhaps some sound coming out of the bottom/right but it's tiny in comparison.

A possible fix to low in-call volume

Recently I found my Z3c had a dramatic drop in earpiece volume. I could barely hear the caller's voice when in a quiet surrounding (like office or home), and impossible to follow the talk when outside. This was quite annoying, because it's a phone and making calls is one of its essentials regardless of whatever extra functions added to it. So I did a lot of work trying to bring the volume back. I rooted the phone (eventually), tried some sound mod, and even worked on the mixer_paths.xml directly. None of these gave me any luck. As the problem seemed irrelevant to the software flaw at the stage, I was thinking about possible hardware cause.
The first thing I did was to open the top side flap, which covers the micro SD and USB. Then I made a call to my voicemail and compared the voice I heard from both the flap opening and the top speaker. I could tell immediately that the sound was much louder and clearer from the flap opening, while the sound from the top speaker was distant and isolated. Wait a sec...
From my research on posts, I was told that there is a film lying on the speakers to make the Z3c dust proof. You can see them through the speaker cuts. To allow the sound goes through it, the film has to be perforated. Could those tiny holes be blocked after spending time with dust, water and soap (yes I did wash my Z3c frequently, thanks Sony for the water proof!). A user did mention the volume on both speakers were much gained after removing those films. I don't want to go extreme, but that did give me a hint.
So I used a pair of tweezers, with pointed tips. I slightly scratched them on those films. Immediately the color changed from dark black to lighter gray. I kept scratching them and made the grey evenly, and made another call to the voicemail. Guess what...the earpiece volume was noticeably increased! Then I airbrushed those films and tried again, this time I could not tell the improvement, but the sound was loud enough that I could hear the voice even from a distance. Now the sound coming from the flap opening would also match with that from the top speaker. I would call it a success.
To summarize: what I did was simply cleaning those meshed films on the speakers, by scratching dust off them. These films can be penetrated if you pushed too hard, so please be gentle. And I'm not sure if this trick would work for others, I'm just sharing my experience, with a good wish that this could work for others who are also bothered by the low in-call volume as I was. Still, try those software fix as well, as the cause to the same phenomenon may be different.
Thanks for reading. Let me know your comments/thoughts/tricks and treats (Happy Halloween!)

Thanks for sharing, I have same issue --- did you test its waterproofing if it still works after cleaning the speaker's mesh?

Has anyone issue with the lower speaker? I actually tried to touch it, its very hollow --- are all units like this? Thank you.

Shizuwi said:
Thanks for sharing, I have same issue --- did you test its waterproofing if it still works after cleaning the speaker's mesh?
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Had it showered once, nothing wrong so far.

today-g said:
Had it showered once, nothing wrong so far.
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done, so far great improvement with sound, i can hear the other person on the phone better --- but not sure about my bottom speaker, its very hollow.

This was one of the reasons why I'd sent in my phone. I thought the speaker was broken. Seems they've just cleaned or replaced that mesh because the volume works well on the returned phone.

Thanks for sharing :good::good:

I push chewing gum in to the grills and mic to clean them out.
Sent from my D5803 using Tapatalk

wow.. it realy works... thanks a lot bro ... !!!

Thx for sharing I'll try it

How does such a thin layer of perforated material manage to block so much sound?

You're my hero!!!!!
I was about to send it back cause of the awfully low earpiece volume. Now that I have cleaned it it's even too loud!
Thanks mate I really appreciated it
Cheers:good:

Great tip bro. Immediate improvement to volume level. However I guess I pushed it further that the sound is now cracking at high volume when the phone rings.
But am still happy that I can hear the other party.
Good job man.

Those of you who are claiming this works, could you please go into your service menu (*#*#service#*#*) from your dialer and run the stereo speaker test? Do both speakers have the same volume output or is one significantly louder than the other?
Sent from the only flagship phone that actually fits in my hand... The Sony Xperia Z3 Compact

So, I'm almost embarrassed to report that I had no issues with my earpiece, but thought I'd give this method of "cleaning" it out a try. I used a piece of chewing gum to remove any dirt from the screen and almost immediately noticed a drastic DECREASE in output from that speaker. Now, calls sound hollow and tinny, and the stereo speaker affect is nearly gone because the top speaker is so much quieter.
I'm afraid that I somehow caused my top speaker to produce less sound by trying this method. I've tried to wipe away any sticky residue caused by the gum, but nothing seems to help. I can't send my phone back to Sony because it's been rooted and they wont honor the warranty. I can't believe that thin piece of speaker grill would actually be able to block sound. What now?

I managed to get higher volume by cleaning the upper speaker with a chewing-gum but my operation removed the thin grey layer. Do you think I've lost waterproof?

zar69 said:
I managed to get higher volume by cleaning the upper speaker with a chewing-gum but my operation removed the thin grey layer. Do you think I've lost waterproof?
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No you haven't. Speaker attached to the lcd panel by a plastic staff so water can't goes inside.. I removed the speaker cover too but i admit without that cover phone looks ugly

2russell said:
No you haven't. Speaker attached to the lcd panel by a plastic staff so water can't goes inside.. I removed the speaker cover too but i admit without that cover phone looks ugly
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OK, thanks.

Has anyone tried replacing both speakers with Z3/Z3 dual/Z3+ ones? I was looking at the pictures of spare parts and it might be possible to put some of those in our Z3c, since the sound on Z3c is really low by default, and the ones on Z3 do sound quite louder.

I had same problem, could barely hear a phone call. I scrapped off the black material protecting the speaker now I can hear through the earpiece. I'm guessing now the phone is not water proof..