is this speaker isuue?

[alexey23]

Hi guys. I got my brand new z3.

and I noticed that bottom speaker's sound is smaller when I turn on music. top speaker's sound quality is much better and louder. is this normal or my phone has some problem?

[Zacabeb]

The ringtone/notification issue is really weird. But the preloaded ringtones do seem quite inconsistent in terms of loudness. They're not normalized very well.

[Syamil]

Just send them for repair two times they change the speaker still the same. When compared to my sister z3 playing the same video speaker at the bottom is louder than mine I told them and they told me to email Sony support Xperia now waiting for them to reply

[gamilo]

I tried 3 units z3 top speakers in all sizzle

[egarciadesigns]

I just got this phone from someone on eBay and i noticed the lower speaker being way lower than the top one. I actually rinsed the phone under running water to see if maybe there was a clog in the speaker. I left it faced down to drain out and it still didnt really work. The next thing i did was call myself from my wife's phone and put my phone on speaker with full volume. I made loud sounds and blew into the speaker and that actually fixed my issue. Since then my bottom speaker is just as loud as the top one.

[thomasacquins]

My Xperia Z3 bottom speaker is really quite when compared to upper one.What to do. It's only one month old and don't have any other problems 

[Raul_Mkryan]

It's not quite, well it is, but that's how it's supposed to be, it isn't a flaw - top speaker is low frequency, bottom one high, in other words top us for bass and bottom one is for treble.

[Zacabeb]

The speaker drivers are different, and the top one is offset relative to its opening. The bottom one sits in some kind of assembly rather than directly under the slot, so that the microphone can make use of the same slot.

It's quite an embarrassing engineering compromise. I'm surprised though that the drivers aren't even more out-of-phase and different in high frequency response.

But on my Z3, voices tend to be biased to the left when listening to videos, since the left (top) driver is the only one with anything resembling mid bass.

[xxxmorpheusxxx]

@zacabeb:
Same problem here. One speaker is much louder than the other. How did you solve it? Thank you!

[Zacabeb]

@xxxmorpheusxxx

I was never able to solve it. On my Z3 it isn't worse than what I've learned to live with. In some cases voices tend to appear shifted to the left due to the wider frequency response in that speaker driver and possibly influence from phase, but it's not as bad on mine as I guess it might be on some other units. If the shift of sound is too annoying, I plug in my headset instead.

I came from an Xperia S which had a single speaker on the back (the front driver was smaller and used only for calls), and there I had to cup my hand behind the rear speaker to get decent sound, so even the Z3 was a major step up.

I still think that the engineering of the speakers on the Z3 is a bad compromise (the top speaker behing offset to the left suggests a late design alteration), but they've done even worse in the past.