To bridge or not to bridge....

Weird, I started to have this same basic problem with a 9B. I went round and round with Byrston, my dealer and the speaker manufacture. Conclusion, I was under powered. I still think this was bull.... But hey, they know more than I do. The drop in speaker impedance was always in the back of my mind, just nobody said this could happen. They suggested I physically inspect the crossover, looks for burn marks, no luck. A 4b is a much larger amp, thou.

I doubt their is anything wrong with the amp. One interesting comment form Bryston was the their amps either work, or they don't. No middle ground. I also think their amps work great, in their design parameters. The 9b is stable to 4 ohms, not 3.9999 ohms. The speakers I am using stay under 4 ohm for everything under 650hz, a major fundamentals section of the spectrum. The 4b should be stable down to 3 ohms(their quote).

Also the "cleaner" the power I feed the amp the higher I could push the unit. Dedicated line, ps ultimate outlet and Richard Gray seamed to help raise the limits, but did not fix the issue. So I bought a Simaudio Titan, I no longer have an issue.

Another 4b is cheaper, but I once heard that a bridged amp never sounded "better" than an unbridged amp. Plus I don't know how much a 4b bridged would like a 4 ohm load.
Good Luck,
Marty

The ohm meter across does not work. I tried, one answer was "all you are measuring is the woofer dc load". All I can say is it does not work.

If you like Bryston, I don't think you can go wrong with the 14b sst. If you clip this, you need help.

Honestly thou, this does not make much sense to me but, I was talking with a Bryston Dealer who also sold Simaudio and he said that he has clipped a 14b but never a large Sim model. I dunno, larger profit margin?
Marty