So I am currently trying to build a multi-platform portable. I'm using a raspberry pi zero w. I have a USB speaker with its own audio card inside. I am attempting to use a potentiometer to allow volume adjustment. With the soldering points on this speaker board, I am unsure what to attach to the potentiometer aside from the ground.
Using a B10K 10K Ohm 13 mm Shaft PCB Mounted Linear Dual Potentiometer

I'm honestly fairly new at this stuff and can't find anything online unfortunately. If anybody has any type of help for this I would be truly grateful. Thanks

 

Volume controls are never linear and marked "B". Instead they are logarithmic and are marked "A".
Each of your linear volume controls will have most of its volume range crammed close together near where it is turned down (left) and have little affect on volume level when turned up (right).

 

Volume controls are never linear and marked "B". Instead they are logarithmic and are marked "A".
Each of your linear volume controls will have most of its volume range crammed close together near where it is turned down (left) and have little affect on volume level when turned up (right).

Thanks for the reply! So pretty much don't use the B10K and use A10K?
And let's just say I have an A10k potentiometer. How would I wire that to this usb speaker board? I'm unsure due to it being L/R with their own output, but no input besides the 5v, DP, DM, and GND?

 

How would I wire that to this usb speaker board?

What is the impedance of the speakers?
Do you need the volume to go from full on to zero?
To control volume directly from the speaker output requires a L-Pad type attenuator.

 

What is the impedance of the speakers?
Do you need the volume to go from full on to zero?
To control volume directly from the speaker output requires a L-Pad type attenuator.
View attachment 233261

The speakers are very small. Uses 3.1v I think? That's what it has on the board. I can only find L-Pad attenuator for 15W-100W. Not gonna lie, very noobish with technicals. So I apologise about that.

 

The speakers are very small. Uses 3.1v I think?

Speakers are measures in ohms anything from 3 to 32 ohms.
Is there a number on the back side of the speaker?
The L-Pad should match the speaker impedance.

 

36-5
40 3W
Is what I see on the back

 

https://www.ebay.com/itm/DC-2-5-5V-...-/174552473655?_trksid=p2349624.m46890.l49292
This seems to be my best bet tbh. But this also has just "L and R in" inputs but not +/- for them.
The board for the speakers on has 5V, DP, DM, and GND.
Output wise is only +/- for L and R

 

Looks like a 4 ohm 3 watt speaker.

 

Speakers are measures in ohms anything from 3 to 32 ohms.
Is there a number on the back side of the speaker?
The L-Pad should match the speaker impedance.

All true, but keep in mind you cannot use an ohmmeter to measure that resistance.

It is an AC reactance, really.

 

The board for the speakers on has 5V, DP, DM, and GND.

The USB speaker sound card has a digital input. That module you posted is for analog input.
A 4 ohm low wattage stereo L-Pad is what you need.

 

The USB speaker sound card has a digital input. That module you posted is for analog input.
A 4 ohm low wattage stereo L-Pad is what you need.

Unfortunately I cannot find 4ohm low wattage L-Pad anywhere. I've only seen 8 ohm and up

 

Well the 8 ohm is not ideal but I think it will work OK.
What is the model # of that USB speaker?

 

5002-speaker
https://www.amazon.com/dp/B075M7FHM...abc_2FM05S4WSJFARQ2T35NY?_encoding=UTF8&psc=1

 

Also I'm trying to stick with stereo sound rather than mono

 

May be difficult getting a L-Pad in that small enclosure.

 

I plan on 3D printing my own housing for the portable and placing everything inside the unit

 

Appreciate you chattin it up with me bro. This has been a real headache. Especially since my knowledge is limited lol

 

AliExpress sells your very tiny stereo speaker for only $8.95US. They say its output power is very low.
The speakers in it are so small that they will produce only squeak sounds. Haven't you tried it?

It does not have an audio input like all other pc speakers I have seen, instead its input is USB, then a normal audio volume control cannot be used.

My pc speakers are 4 times larger and cost 6 times more. They have a volume control and a real audio input and sound very good.

 

AliExpress sells your very tiny stereo speaker for only $8.95US. They say its output power is very low.
The speakers in it are so small that they will produce only squeak sounds. Haven't you tried it?

It does not have an audio input like all other pc speakers I have seen, instead its input is USB, then a normal audio volume control cannot be used.

My pc speakers are 4 times larger and cost 6 times more. They have a volume control and a real audio input and sound very good.

I have tried them and got the audio to come out of the usb speaker on my raspberry pi zero. They sound great for price and size.
There's gotta be some way to Jerry rig this