Channel Seperation Issues


I am running Manley Euro 175 Monoblocks through a Cary SLP 98 F1 with a Music Hall Cd25.2 front. The speakers are Audio Physic Tempo IV's. I noticed that playing the Stereophile Editor's Choice Test CD Track 1 "Channel ID" that I am getting the bass line equaly out of both speakers. The Cary does invert phase and I have switched the speaker leads on the speaker end as recomended by Cary to compensate. I spent the morning going through the system, switching cables, switching sources, trying different combinations and can not fix or isolate the problem. Any ideas out there?
Thank you.
coe1

Showing 3 responses by coe1

In answer to Rwwear, the bass line is played by a Fender 4 string bass guitar with plenty of lower midrange to localize the sound. I believe, at least.

To Tarsando. Everything else is not divided properly. I spent the afternoon fiddeling around more. Changed speaker cables completely to some very short 3' oldies I had lying around, and playing music to see if I could narrow down the issue. On Dark Side of the Moon there are footsteps running from left to right and back again very clearly, I could not localize them properly. On Led Zepplin's Whole Lotta Love, there is similar swirling around between left and right in the mix, and that is not localized well either. On tracks with a single singer, the person is centered up fine, sound stage is apropriatly deep and or wide as the mix dictates.
Interesting thought on the mono switch, but no dice. At least not to my knowledge. Although I could see myself making that type of mistake! The amps bias up well. Everything else SEEMS to be in order, but I can't kick the problem.
Could I be starting to lose a driver or input tube in the right mono-block? Would the beginings of that cause a problem such as this? I need some solid Tube Afficianado advice perhaps.

Thanks very much to Rwwear and Tarsando for posting in, I very much appreciate your thoughts and time. Any other ideas from you or anyone else would be MIGHTILY appreciated.
Many thanks again Rwwear and Tarsando for your time!
Swapping leads on just one speaker is interesting, I hadn't considered that. No headphone jack on the CD or anywhere else, unfortunately, but I'll try the one speaker lead switch. The Pre is new, but I swapped it out already and the problem contiued.

If any other great minds out there have an idea or hunch, please let me know!!!