[Fullvolume]

Just wondering what the 28B SST2 power output at 4ohms would be......

[drummermitchell]

I'll take a stab at it.
If you could bypass the 28's breaker,I'd say 1600w,but then I'm sure you would trip the main house breaker.
Q for James.

[James Tanner]

I'll take a stab at it.
If you could bypass the 28's breaker,I'd say 1600w,but then I'm sure you would trip the main house breaker.
Q for James.

Hi Don,

Correct - typically the circuit breaker would activate before maximum power could be reached.

From Stereophile review:
The amplifier comfortably exceeded its 1000W/30dBW specification into 8 ohms, delivering no less than 1300W (31.15dBW) at 1% THD+N. (The wall AC voltage dropped from 125.1V to 120V at this power level.) Into 4 ohms, the Bryston clipped at 1800W (29.5dBW, 117.5V wall voltage)

james

[Fullvolume]

I just read the review and here is a snip:

Bryston publishes only the 28B-SST's maximum power output into 8 ohms; no ratings are offered for loads of 4 or 2 ohms. However, run into 4 ohm loads, with the rear-panel circuit breaker bypassed, the amplifier won't clip until it's continuously delivering 1800W. The resulting current flow will trip the 15-amp breakers in most homes after 10–20 seconds of continuous power. Chris Russell explained that, because regulatory agencies test an amplifier at its rated power under home conditions, for the 28B-SST Bryston chose a power rating into 8 ohms that would not trip the average home's circuit breaker.

So can I assume a 4ohm speaker would not be the best choice??

[James Tanner]

I just read the review and here is a snip:

Bryston publishes only the 28B-SST's maximum power output into 8 ohms; no ratings are offered for loads of 4 or 2 ohms. However, run into 4 ohm loads, with the rear-panel circuit breaker bypassed, the amplifier won't clip until it's continuously delivering 1800W. The resulting current flow will trip the 15-amp breakers in most homes after 10–20 seconds of continuous power. Chris Russell explained that, because regulatory agencies test an amplifier at its rated power under home conditions, for the 28B-SST Bryston chose a power rating into 8 ohms that would not trip the average home's circuit breaker.

So can I assume a 4ohm speaker would not be the best choice??

Hi,

No its not an issue at all - I have used 2 ohm loads and I have never popped a breaker

james

[Fullvolume]

Thanks James,

That's what I was wanting to hear !!