12v Powered Systems - Bluetooth module sound quality.

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Bluetooth module sound quality.

Printed From: Speakerplans.com
Category: General
Forum Name: 12v Powered Systems
Forum Description: From Mini-rigs to ICE, all your low voltage audio needs here...
URL: https://forum.speakerplans.com/forum_posts.asp?TID=93128
Printed Date: 23 April 2024 at 11:14am
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Topic: Bluetooth module sound quality.

Posted By: Shortrope
Subject: Bluetooth module sound quality.
Date Posted: 29 August 2015 at 1:34pm

I've a Sure 4.0 Bluetooth module in the control box on my Boombike.
I never use it as the sound quality is so bad compared to hard wiring.
Is this normal??
Or is there a way of improving things?

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My Tinnitus is coming along nicely!!

Replies:

Posted By: Swedgin
Date Posted: 29 August 2015 at 2:37pm

Do you have a good DAC between the bluetooth module and the amp? Audio that's transmitted via bluetooth is lossy (so a bit loss here) and digital. If you don't have a decent DAC it could be you lose a lot of detail in sound quality.

EDIT: your module has a sample rate of 94kHz, this should be enough (cd has 44,1kHz) but I don't see the resolution. Best is one of 16bit (or 24bit if you want to go high-end) so you don't lose much information.

Posted By: Shortrope
Date Posted: 29 August 2015 at 2:56pm

I'm just taking an audio signal off the BT modules own RCA outlet into the Amplfier.

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My Tinnitus is coming along nicely!!

Posted By: Swedgin
Date Posted: 01 September 2015 at 3:49pm

I did a quick research on bluetooth audio and came to conclusion that your module should have bluetooth 4.0 and aptx codec support for the best result, and it does.

I'm sorry but I can't help you further due to lack in knowledge. My guess is a poor resolution but I don't find the resolution of the module.

Posted By: gustavoppires
Date Posted: 10 January 2017 at 6:22pm

Hi.

I have the same module and did some blind A-B'ing with a high quality dac and could not spot any loss of quality. There's a catch though: The module's output clips at the highest BT volume settings (playing from my Samsung Galaxy S5, it clips in the top 70%+ volume settings).

Did you try lowering it?

Cheers!

Posted By: davey t
Date Posted: 16 January 2017 at 12:41pm

Yea the module clips easily. As long as you are not overdriving it, you should get really good sound quality. We've used them and they're fine.

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Minirig portable soundsystem movement