Hello,
I have had some issues with my OB1's and I would like to share them with you. Maybe some of you can provide some feedback about the possible reasons of my troubles.
I bought my OB1's about three years ago and after a year I realized that one of the mid range drivers was producing a bizarre rattling kind of sound. Not always though. Only when I am listening to piano music and on some certain notes. And when the volume is beyond a threshold - not too high though, about 1/3rd of the volume dial. When that special note is hit on the piano, the sound is as if you left a bottle on the top of the speaker and it is shaking or rattling.
At the time I contacted my sales person and he sent me a replacement driver which solved the problem. He told me that the reason why this happened is because I was driving my speakers with an amplifier that did not have enough power, so the sound signals were turning into square waves. This was causing problems with the speaker because there were not designed to function under square waves.( I was using an arcam solo at the time - was saving money to buy Bryston).
Anyway, after he told me that the source of the problem is my amplifier, I unplugged my speakers and ordered my 4BSST. Since the day my new amplifier arrived, I have been using it to drive the OB1s.
Two years fast forward, and I am having the same problem. I am not sure if it is the same speaker. But the problem is identical.
So, my question is this: Am I doing something wrong and ruining my speakers? Or, is there a design issue that someone out there is having similar problems?
Regards,
Ozgur
PS: By the way, I am a proud owner of all Bryston/PMC system. I completed the system last year with BCD1 and BP26DA. I cannot explain how much this system adds to my life. I typically work long hours and there is nothing like coming home, opening a beer, and hunting through my CDs for long forgotton favorite tracks. Thanks Bryston. Keep up the good work.