Wayne Parham Messages: 18752 Registered: January 2001
Illuminati (33rd Degree)
Perhaps you could try an inexpensive passive analog high-pass filter in the preamp line going to the mains as proof-of-concept. If you like what it does, you can then move on to try more elaborate filters with a stand-alone DSP module. And even after that, you may ultimately find a simple filter is what works best and go back to your original proof-of-concept setup. The proof is in the pudding and half the fun is working through it all to find out what works best!