18' between front speakers is an awful long way. Is your listening spot 18" from each speaker?
If you want used amps, you may want to consider the mighty Yamaha M-80 or M-85 amps. Continuous Power Per channel both channels driven is 250 W into 8 ohms - (0.003% THD), 290 W into 6 ohms - (0.007% THD), 330W into 4 ohms - (0.02% THD) dynamic into power 8 ohms - 380W, into 4 ohms - 650W, stable to 2 ohms. If you want, you can get 30W per channel in pure class A. The monster Yamaha is a very nice sounding solid state amplifier. I had 2 of mine recapped with 105C 5% caps and they sound great. The M-80 is not bridgeable.
Of course, if you're thinking of LFR1100 Actives, you will need 5 channels of amplification per speaker.
Last edited by 2x6spds; 03/15/20 12:30 AM.
