Hello all. I am new here and somewhat new to electronics. I am learning all I can in my free time. Reading articles and trying to take in as much information as I can. I am not new to the 12 volt world as I have been a automotive tech for 20 years. But the whole semiconductor and digital and analog thing to me is very new. So I have been doing alot of reading. I have 1 project that I have been working on that has brought me here. And that is building a bluetooth boombox. I went and picked up a cheap board from amazon and I think it might be broke or it is just not what I am looking for. I also picked up a pair of JBL control one bookshelf speakers that I was planing in using in the build but I am not completely sure if they will work for what I want. I am looking for clean crisp sound with defined lows. So the Amp I got from amazon comes with a bluetooth 4.0 board installed. And it boasts 2x50 and 1x100. I hooked up the JBLs and I measured the impedance and they were 3.2 ohms a speaker . And I used a power brick @ 12volts 5 amps. ! it has a hiss when music is not playing and 2 completely not impressed with its output. So I took my labs bench supply and put 24 volts at 3 amps. No change in output. I did notice that it would not consume over .20 amps of current ? Not sure if that is correct or not. So I dont know if my amp is at fault or my speakers ? But I thought that this place would be the perfect place to find the answers to my questions.
Welcome to diyAudio 
You are probably best asking about this over in the Class D forums, this is really just for intros.
Altering the supply voltage to an amplifier will not change a given output level that it is playing at, if that makes sense.
A higher supply will allow an amp to go louder, but if its only delivering say 1 watt into the speaker then 12 volts or 24 volts, it will still be playing at 1 watt.
Are you applying enough signal level to drive it fully ?
You are probably best asking about this over in the Class D forums, this is really just for intros.
Altering the supply voltage to an amplifier will not change a given output level that it is playing at, if that makes sense.
A higher supply will allow an amp to go louder, but if its only delivering say 1 watt into the speaker then 12 volts or 24 volts, it will still be playing at 1 watt.
Are you applying enough signal level to drive it fully ?
I wouldn't know how it was configured either tbh.
OK, as this is pretty technical and as this section is really for intros I have copied your thread here:
Problems with amp and Bluetooth module.
Hopefully you will get lots more advice from those that have used these and have experience of them.
OK, as this is pretty technical and as this section is really for intros I have copied your thread here:
Problems with amp and Bluetooth module.
Hopefully you will get lots more advice from those that have used these and have experience of them.
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