Re: DSP Room Correction
As I said, I strongly recomment that you do not bypass the internal crossover in the M40 - or indeed in any Harbeth. The crossover adjust the levels, phase, frequency division and slopes of the drive units. Without access to my original design objectives, measurements and techniques there is really no chance of replicating (hence at least matching let alone improving upon) the ex-factory situation. If there was, I would give up the painstaking design process and buy a programmable DSP box and go on a long holiday!
"By the way ... word of caution: This bi-amping arrangement I have not tried. As I've said before, the M40s bass crossover expects to be loaded by the midrange crossover (and vice versa) from the same amp source. You are in uncharted territory!"
Alan A. Shaw
Harbeth Audio UK