Marchand XM9 active crossover kit went together in about 15 hours, and was a "zero defect" project. No hum, no crosstalk, just good sound. For initial tests I just decreased the HF level adjustments by 12dB per the dial marks. Done for tonight, time to party...I'll put the unit in the rack and "neaten up" later. Oh yeah, crossed at 800Hz. of course:) But I already made some 500Hz. and 1.6kHz. freq. modules... Samcrap, I installed the lm353's, and left the "good" opamps on the work bench...wouldn't have been prudent to "smoke" those upgrade devices anyway.
great dynamics with 200wpc LF and 100wpc HF:) gotta still be running class a.