I acquired a cheap none operational Oppo bdp-93 and repaired it, just a couple of PS capacitors. I set off modifying(for a fun project) for only 2 channel music. Disconnected the PS connections for other surround channel opamps, replaced the stereo output opamp(to a opa2132), external analog dc supply for audio board, denoisers for the regulators, replaced caps, removed the muting transistors and much more. I've even added rotational mass to the clamping disk magnet(blue tack and washer), crazy you say.... I like what has been the result of most of these changes. It's just an experiment for my own satisfaction, just fooling around.....
If possible I wish to limit the discussion about the following topic. Reading that the "better" Oppo models parallel multiple output channels to produce their audio out, I thought I might try doing that with this CS4382A 8 output channel dac chip. Add the 4 inputs(pins 8,11,13,14, and DSD like pair inputs). Then how do you add up 8 pairs of differential outputs into a single pair out? There are no known available schematics to any of the Oppos that I can find to study. What are the possible issues in just giving all the inputs the same signal and adding the outs? Couldn't the output stage just be a load resistor?
I'm at the brainstorming stage, what could go wrong?
If possible I wish to limit the discussion about the following topic. Reading that the "better" Oppo models parallel multiple output channels to produce their audio out, I thought I might try doing that with this CS4382A 8 output channel dac chip. Add the 4 inputs(pins 8,11,13,14, and DSD like pair inputs). Then how do you add up 8 pairs of differential outputs into a single pair out? There are no known available schematics to any of the Oppos that I can find to study. What are the possible issues in just giving all the inputs the same signal and adding the outs? Couldn't the output stage just be a load resistor?
I'm at the brainstorming stage, what could go wrong?