 |
|
||||||||
|
|
||||||||
Common soundcard outputs are AC coupled. I needed DC coupled outputs for my homebrew laser projector, so I hacked a USB soundcard by bridging the coupling caps with 100 ohm resistors. Simple mod -- works great!
Cheap 6-channel USB soundcard ($11 USD from eBay):
Before and after placing 100 ohm resistors on four of the six output channels:
