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
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?
A 7B ST anaemic? I have a pair and they could drive the proverbial brick. Two possibilities come to mind: the amp is sick and needs professional care; your level of anticipation was such that the amp can never be equal to the task. This second possibility happens more often than subjective audiophiles care to admit. After all, no matter how good an amp is, it's just an amp. The same goes for any other component: too much hype equals disappointment. Most level-headed audiophiles come to that realisation sooner or later. Those highly touted HUGE differences are, as likely as the sun is to rise in the East, in the ear of the behearer (did I write that?). Get the amp checked. If it's ok you have two outs: claim that there is some sort of mismatch between amp and speaker or, as a lot of audiophiles are wont to do, undermine the reputation of one of the most honest companies in high-end audio by repeating in every forum and to all concerned (heck throw in some not so concerned for good measure) that this amp is "thin", "lightweight" or any other purely subjective epithet. Oh, by the way, make sure that the switch at the back is properly set for series or parallel operation: it could make an appreciable difference. Good luck and good listening and don't give up on Bryston they are great amps.
Take a look at the thread below.

As to Pbb's comments, how is sharing experience and commenting on the experience of others ( even in published glossies ) "undermining" a company ? If what you say is true, devotees of Bose can lay claim to the same "mistreatment" on a X10 basis.

Personally, i would rather hear both the "good" and "bad" surrounding a product. This allows me to have a more informed idea of what i might end up dealing with. Like anything else though, i would form my own opinions of the product based on my own experience with it. Like anything else, that experience could be good or bad or a combination of the two. Sean
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http://www.audioasylum.com/audio/general/messages/200490.html
After having said the above, is the 4B higher gain than the 7B ? If so, you would be experiencing less bass output for the same amount of drive that the 4B used to give you. This could come across as less "oomph" or a slightly lean tonal balance. There would still be bass output, but just not as much as what you were used to. Do you find the bass lower in quantity or is it also poorer in quality ?

Keep in mind that many larger amps also offer better control over the drivers, so you might actually be hearing "less slop" and more accurate output. Sean
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