Shared Projects by pharbour

Onkyo DX-C606 IR remote control headphone volume adjust using digital potentiometers. Intended to replace “Headphone volume pc board assy” (U4). Transfer analog stereo POT from original PCB to this one. Provides approx 20dB attenuation of headphone audio signal using IR controlled volume UP/DOWN remote buttons. Attach control logic inputs from Q202.51 (VR-) and Q202.52 (VR+). Uses audio op-amp supplies +15, -15V from main-board.