Amp for Martin logan CLS Originals


Hi,

I have been considering a couple of amps to pair with Martin logan CLS originals.

Any thoughts on the Mcintosh 2205(or other 200+ watt Mcintosh Solid states), Mark Levinson 23, Harmon Kardon 7.1 ?

Advice would be greatly appreciated.
dfelkai

Showing 1 response by mrderrick

The original CLS is a solid state amp killer.
Most of the freq impedance curve runs between 16 and 32 ohms.

Just as some amps double their output when the impedance drops (8 - 4 ohms) they will also cut their output in half when the impedance is doubled (8 -16 ohms).

I drove my CLS's with a Classe CA400;
400 watts @ 8 ohms
800 watts @ 4 ohms
1.6k watts @ 2 ohms
and 1 ohm stable

With the CLS's that turns into;
200 watts @ 16 ohms
100 watts @ 32 ohms

When you factor in that the CLS is not the most efficient speaker, maybe actually 82 dB, 100 - 200 watts is not much power.

I could drive the CLS's just so far, then either the speaker or the amp ran out of steam.
The stators were also the newest generation.

A 200 watt tube amp would be a better choice.