USB sound question

[bowlonoodle]

I'm trying to wire up USB sound, but having trouble deciphering what wires go where. I'm running the 5v, G, D-, and D+ to the USB breakout but having trouble on the other side. Do i wire up channel L and common to an amplifier then to the speaker/headphone jack? Or do I go without an amplifier. I'm using the Adafruit Mono 2.5W class D Amp.

In my head, I would run the D+,D-,5v, and ground to the USB breakout (since it's desoldered) then the output side to the headphone jack/speaker.

[n.marek]

I am not 100% sure, but the USB is already a amplifier, so you shouldn't need it. So just hook up the speaker to the jack. I think

[bowlonoodle]

It's a cheap one I got from Radioshack, so I'm not 100% sure either. I guess i need to analyze the schematic and board to determine the amount of gain if there is an amplifier, correct?

[n.marek]

It's a cheap one I got from Radioshack, so I'm not 100% sure either. I guess i need to analyze the schematic and board to determine the amount of gain if there is an amplifier, correct?

yes

[WilliamCampbell]

Hi there! I am not sure about this. But you can connect your headphones directly to the speaker also. I am not having the perfect idea about the USB. My friend once tried his headphones with USB but failed to attempt. You can also check more information on internet.

[Hex]

I am pretty sure the USB is not an amplifier. The wiring should be as such. USB DAC/Sound card -> Headphone Jack --(un-jacked)--> Amp ---> Speaker. amp should have a pot. If you want pot to control headset then amp should be directly after Soundcard

[Helder]

I am pretty sure the USB is not an amplifier. The wiring should be as such. USB DAC/Sound card -> Headphone Jack --(un-jacked)--> Amp ---> Speaker. amp should have a pot. If you want pot to control headset then amp should be directly after Soundcard

This is correct and any sound card with headphones out is usually unamplified but works fine for headphones. A speaker needs amplification .