Mark Levinson 20.0 amps, "Anyone with info on it"

I'm using a Bryston 10B cross over. I tired the KBX and liked this one better. I have not tried the LNC, but if I'm not mistaken it is single ended only and I wanted to use balanced. I think Marchand makes excellent cross overs as well. At the time I bought my Bryston they did not make a balanced model, but I believe they do now. I am somewhat familiar with the XR19s--is it easy to bipass the internal cross-over in order to do active bi-amping as you are planning? I generally don't care for McIntosh equipment, but they did a remarkable job with that line of speakers. I'm surprised it has not been better received than it has. It can play the techno, classical, pretty much anything thrown at it. When properly set up I've heard those speakers really sound fantastic.

When biamping your speakers, did you have to deal with the issue of adjusting your crossover at the right slope.

Not so much the right slope as the right cross-over point. You should get the slope that is recommended by the speaker manufacturer. For my Martin Logans it was the steepest slope possible (24dB per octave). For the McIntosh I would guess it would be 18 dB per octave, but you should call McIntosh and ask them the optimum cross over point and slope for that speaker. Also, as the "dark" characteristic: "Almost inevitably, a dark sounding unit (all of the early Madrigal/Mark Levinson designs) will be dynamically constricted in the top two octaves." Harry Pearson, the Absolute Sound, Issue 137 August/September 2002, page 101.

hello to all: I'm immersing myself in your conversation because I'm looking for amplifier cards for my 20.0 mono blocks! indeed these ones have broken down, and I'm looking for others of course. If you allow me to submit this message to you of course and to pass it on to all Mark Levinson lovers.
I look forward to receiving a favorable response and send my best regards.
Cordialemenjt