I have a pair pf speakers in my secondary system that I'd like to better tune the response and I have a spare DSP, a Dayton Audio DSP-408, which offers 10 PEQ bands per channel. Without bi-amping and adding another amp, is it possible to add another 10 bands of PEQ per channel by re-amping, that is routing the stereo outputs back into the channels 3-4 inputs, then out to the amp, being mindful of the gain?
It might work but its probably not a very good idea.
The way those low-cost EQ boxes work is they take analog audio in, convert it to digital, apply a digital filter, take the digital output, and convert it back to analog. Each of those conversion steps degrades the SQ of the audio and adds distortion.
Thus if you loop back through another channel (pass through DSP-408 twice), your audio will go through total of 4 damaging conversion processes. It may sound like crap after that but if it doesn't bother you then it could probably give you the additional EQs you want.
Because of the above considerations its usually best to do any and all digital processing first, then only go through conversion of digital to analog (pass through a DAC) one time ever as the very last step before going into your amplifier.
The way those low-cost EQ boxes work is they take analog audio in, convert it to digital, apply a digital filter, take the digital output, and convert it back to analog. Each of those conversion steps degrades the SQ of the audio and adds distortion.
Thus if you loop back through another channel (pass through DSP-408 twice), your audio will go through total of 4 damaging conversion processes. It may sound like crap after that but if it doesn't bother you then it could probably give you the additional EQs you want.
Because of the above considerations its usually best to do any and all digital processing first, then only go through conversion of digital to analog (pass through a DAC) one time ever as the very last step before going into your amplifier.