Rogue Audio Sphynx and Martin Logan Odysseys

Jimbreit, thanks for sharing the additional info for your system setup. One problem you have is not using the spikes on the speakers. Using the spikes will definitely tighten the bass. Read the section, “Solid Footing” in your speakers manual here,

http://www.martinlogan.com/pdf/manuals/manual_odyssey.pdf

Also, this would solve the problem with your wooden floors,

http://www.audioadvisor.com/prodinfo.asp?number=AASONIC&variation=BLK
.

What are your dealer's thoughts on this? And have your contacted Rogue to get their impressions? As much as I like A'gon, I'd start with those first.

Rogue has always been particularly helpful when I have had questions or problems.

In all my years of audio interest I've never used spikes so I have a drawer full of them. I guess I just didn't understand, and am still a little fuzzy, how this seemingly simple application could accomplish much. Anyway, I appreciate your knowledge and experience so will continue to try understanding the rationale. I'm trying not to sound hard headed about spikes and I do like the idea of using "pucks" of some sort under the spikes but wonder what would be accomplished by moving the interface between the speaker and floor to between the puck and the floor. As a matter of fact, it creates 4 extra points of contact using this method. BTW, I do have the owners manual but didn't, obviously, heed ML's instructions. I'm going to try soft feet because I do believe that it will result in more solid contact than the flat floor to flat speaker box, because neither are truly flat.

BTW, both Rogue Audio and my dealer agree that this amp with a damping factor of 1000, should easily keep the bass tight, everything else being equal.

You have spikes and choose not to try them? As for an uneven floor, spikes can be adjusted (how far in you screw them) so the unevenness can be corrected for.

Spikes are the recommendation of your speaker manufacturer. Take em out of the drawer and try 'em. Doesn't cost you a thing.

If I decide to use spikes it won't be until after everything else is tried and adjusted and, even then, it will not be directly into/onto the floor. I had spikes on a Vandersteen sub a few years ago and it did cause damage when I tried moving moving it to accommodate new furniture. I'm 71 years old and have some significant difficulty lifting these things straight up to minimize damage to the floor so some compromise is necessary. After all, my whole listening area is already a compromise. Btw, I'm starting a new thread because I just discovered that one of my speakers needs a new transducer I think. Talk about a pain in the neck.