How about using a Denon AVR5800 with Martin Logans

Onkyo receivers actually are rated to be able to drive 4 ohm loads. Onkyo has much more current capability adn able to drive lower impedance load than Denon. Even my Yamaha will and is rated to drive 4ohm loads.

The Denon will not drive impedance loads as low as most Martin Logans go. (1.5-2.5) The denon is not intended to drive loads lower than 6 ohms. You might get lucky at 4 ohms for a brief time but I would forget about Martin Logans with that combination.

I stand corrected. I still maintain though that logans dip to around 1.5 to 2 ohms at about 20khz. If you call Martin Logan and ask them if a receiver rated at 6 ohm minimum load will "properly" drive their speakers to their maximum potential I think they might better satisfy your quest for knowledge. I do know Denon doesn't recommend loads at below 4 ohms because I own a Denon and even went to the manual last night to verify. This is a quote from the manual.
"Speakers with an impedance of from 6 to 16 ohms can be connected for use as front and center speakers"
"The protector circuit may be activated if the set is played for long periods of time at high voulmes when speakers with an impedance lower than the specified impedance are connected".

I still maintain you are not hearing what the Logans are truly capable of. Because they don't shut down does not mean it is a good match. And I'm not referring to the origianl CLS. They dropped to .75 ohms. I have had Sequel, Sequel II, Quest, Request, ClS, CLS II, CLS Z etc. I have tried many amps. I don't think his question was regarding our debate of what the manual says. If you get them to work without shutting down that is great. I think most of the responses to the thread were that it would sound better not using a reciever and I will still maintain that position.
You your self stated it wasn't very dynamic but it worked. Hardly sounds like a ringing endorsement. In addition the NEW Scenario from Logan states impedance of 2 at 20Khz. Sounds pretty much like the range I gave in my previous thread. Glad it works for you but I don't believe many people including Martin Logan or Denon for that matter would say it is a great match. If Dansloane is only interested in it working and not shutting down then you are right it appears.

Agree:)