I am building a 4.1 platform and I was using the demo board in a 48 pro 2.1 configuration for testing purposes.
In that configuration the sub channel is driven off the I2S output from amp 1 and the EQ setting apply to both amps. .
What I want to do is also drive another stereo amp off the the same I2S output of amp one .
Is this possible? I know that the woofer crossover and be bypass in amp one,so that isn't a problem , but it appears the the left and right signals are being summed and fed to the left in of the sub amplifier ( PBTL).
As aside, it appears the the process flow document has not been revised for the 48k 2.1 pro ( process 12).