Bryston 7B ST - Sounds anaemic. Any help?


I bought a new Bryston 7B ST recently to replace a 94 model 4B THX to drive my bass and I was hugely dissapointed. I wonder if there is a possibility that it may not be pumping 500w as it supposed to do. I have Alon Circe speakers.

I just don't get the oomph factor and I feel the 4B THX kicks better.

Would appreciate suggestions
hafeez
Perhaps the Circes' woofers are wired for hi-impedance (suitable for tube amps)... if so change them to the 4-ohm setting (done by dealer or mfg?)
Also the bass on these speakers is very well damped so you won't get great gobs of bass.
If you had better performance with your 4B, this is a puzzle.
I assume you have two 7Bs in mono config, not one as your post suggests.
Sounds like a faulty unit. Check with Bryston; they'll probably suggest you send it in. Bummer to be without it for a while, but at least you've got the 20 year warranty.

Other possibilities: some kind of impedance mismatch with your preamp or whatever is in the signal path immediately in front (unlikely). Suboptimal setting of the current/voltage switch in the back -- try flicking it the other way and see if the sound improves. Also, it may not be sufficiently broken in (unlikely). Gook luck.
Are you driving the Bryston directly from the wall? They do not require power line conditioners and if you are using one don't plug the Bryston into it...Maybe the Bryston doesn't like the speaker matching? Are the speakers a difficult load?