2. amps-preamps
  3. 170526-118749

Right Channel dropped out Bryston BP-26P (upgraded from BP-25P)

Long-time member/reader, first time poster  Moved my speakers to new location (used Cardas recommended measurements per post I read today on AudioGon site.  Long story short, turned on system, no right channel.  However, balance ctrl in center, I have left channel output in both speakers. Balance Ctrl fully to right channel...nothing.  Same whether it's switched to Mono or Stereo.  Found negative spade connector off on right speaker (did not seem to be touching positive terminal.  Reconnected still have the problem  Using Bryston 4Bcubed amp.  Both channel lights are green so I don't think it's the amp.Suspect preamp is taking a trip back to Bryston. However, also saw a post that said to clean input selector contacts, which I can do? Any suggestions welcome.  BTW  It's out of warranty
deanrk
bslon's avatar
bslon
2,184 posts
 
Possibly your negative speaker connector contacted the positive terminal and your amp is damaged. The indicator lights can still show green.
deanrk OP
22 posts
 
SOIX Doesn’t/didn’t make any sense to me either. Tried unplugging everything and starting up again.  NoGo.  Nonetheless, set up GFA-1 to preamp and a pair of RadioShack Optimus dipoles I had hanging around (just in case there was a bigger problem I did not want to blow any drivers) AND I have regained right channel??!!?? And phantom middle audio.  

BSLON. You may be right about negative speaker shorting to positive.  But the puzzle still remains about the Balance Center and fully CW.  

Thought it was PA. 20 yr old BP-25P converted to BP-26P several yrs ago.  And yes Bryston products are built to take a beating

Greatly appreciate your help

DRK


oldhvymec
5,101 posts
 
Check your connections and swap the cable at the power amp.
XLR first speaker cable next..

No idea if they have breakers or fuses. Seldom does the cheapest amp on the planet blow up from a cable tough.

 All that to say check ALL the fuses in the power amp!!!! Do they have fuses? They must.. Inside the power amp?

Bryston, I'm not familiar other than they have a great warrantee are as tough as nails, a great reputation and Canadian.

Regards
soix
9,530 posts
 
So, are you saying the BP26 worked with the other amp and speakers?  Not clear to me.  
deanrk OP
22 posts
 
SOIX. Yes PA works fine with Adcom GFA-1
OLDHVYMEC.  First. I’m listening to system with Adcom in system. All sounds fine. Right channel working fine. Bryston uses a magnetic master circuit breaker switch on rear of amp. It didn’t trip but I did reset it. No difference. I even connected my PA to Bryston amp via single ended inputs to see if there was a problem with the balanced outputs. No Go. I did send a text to Bryston tech waiting for a response 

The balance control issue is driving me nuts!  It doesn’t make any sense. But I’m listening to music now. So I’ll wait for Bryston’s response. I’m sure it’ll go back. 17 years left on warranty!

Appreciate everyone’s comments and suggestions 

dean

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