Martin Logan CLS setup

Your CLSIIs will play with your 60 watt amp, but soon you will hear the short comings of not enough power. You may want to consider tube amplification. Any tube amplifier with 100 watts or more will do.

I assume you will be placing your speakers on either side of the fireplace. Pull the speakers 3' to 4' out with very little toe in. You will want to hang some window treatment on the windows behind the speakers. Don't worry about room treatment for now. See how the speakers react to your room.

If the speakers will not play loud enough there is a chance the panels are clogged and need replacement. When the panels get dirty from air born contaminants and humidity the efficiency of the speaker drops dramatically. Using the brush attachment with your vacuum cleaner and slowly moving it across the panels on a regular basis is a good practice. Replacement panels are expensive.

You will most likely want to try a subwoofer.

I've thinking of moving up in power at some point. The Audio Matiere is a tube amp and far out does its 60 watts however my plan to to go with a couple of 200 watt monoblocs from Tube Research. I'm not really having any trouble with volume levels but the bottom end could have a little more weight which I'm hope the extra power would help. The panels in these were replaced in 2001 and Martin logan told me the newer replacements are better, lighter and more responsive I don't know if that would be a significant step or not.

When I had CLS's I tried subwoofers with mixed results. I always thought the Vandersteen subwoofer would be a good match. It has a unique way of connecting to the system and relieves your main amplifier of dealing with the lowest octaves. It uses three 8' woofers in a slot loaded configuration. It is very quick yet moves air equivalent to a 15" woofer.

With the cls1 which were more demanding than than yours,I used a spectral amp 60 watts/vintage 1985 with a arc sp9 preamp. I had a large Mac and they nearly blew the speakers apart, that I previouslyhad used with OHM f's . If they are working leave them alone. Although I admit , mine rattled when i played organ music and maybe a subwoofer will add duration. I assume they are 25 years old by now.

I'm not sure that the CLS-1 is more demanding than the CLSII.

Minimum recommended power for the CLSII is 80 watts and the minimum impedance is 1 ohm.