My 4B-ST runs Hot

Alright, just a follow up. I put the amp through the paces tonight for about an hour. It stays cool for about two songs (rock, R&B) at a pretty good volume. Then it begins to warm up pretty steadily, favoring the right side of the amp. After about an hour of playing, moderate to loud volume (classical, single vocalist and small assortment of instruments) I checked out the amp. The left side of the amp is merely warm, both the heat sinks and top of the amp are the same temperature. The right side of the amp is too hot to leave a hand on for long. The heat sinks on the right side are scalding also. The heat is present from the front of the amp to the back of the amp on the right side. I did not record the temperature as I do not have a thermometer to check it with, but I figure it was pretty damn hot if I couldn't leave my hand on it. Now, the interesting thing is that when I stop the music, the right side of the amp slowly returns to the same warm state the left side of the amp is at. I plan on calling Bryston soon.

Mullen, glad to hear you love your Legacy's. My wife and I love ours also. An increadible improvement over the Kappa's. Hoping Argent finds out his problem. I'm starting to upgrade and am considering the same amp he is running. Hey, us Legacy owners are at a minimum around here... keep on enjoying!

Argent, there is something wrong with the amp. It is not your load. It is in need of repair if it gets that hot on one side.

Argent, I had the exact same "problem" with the 4BST as you have: The right side of the amp was damn hot! It was happen a month ago. I called Bryston, they suggest that I should switch the speaker cables. And then I found out that I connected the channel1 with right speaker and channel 2 with left speaker; also with my interconnect as well. But I have used the 4BST like that for almost 2 years with no problem. I thought that maybe the problem now, so I correct the connection: Channel 1 connect to left speak and channel 2 connect to right speak and also changed the interconnect. The funny thing is, after that, the right side become pretty steadily as normal as the left side?! Since then, I don't have the warm problem with the right side of the amp. And I don't have any idea why...?

Nope, my speaker cables and interconnects are hooked up correctly. The only other thing that might be causing this is my pre-amp. For anyone who owns a Conrad-Johnson product, you know that they are not phase inverting. This means that when I send the signal out from the amp to the speakers, the red terminal on the Bryston must correspond to the black terminal on the speaker. But even if I hooked that up wrong, which I did not, I still don't see how that could hurt the amp. Phase inversion really just affects the speaker, I think. Anyone else out there who owns a CJ product want to chime in?