No, You Cannot Bi-Amp


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The new Magnepan 20.7 is not bi-ampable. The prior model 20.1 allowed bi-amping.

What sonic benefit if any, would any would a speaker gain by removing the capability to bi-amp?

I understand the big Wilsons are no longer bi-ampable either.

I have always been a huge fan of bi-amping.
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mitch4t

Showing 4 responses by magfan

I think one of the reasons that bi-amping is a lightning rod is that there is much misinformation or opinion masquerading as fact.

People also mix non-compatible gear, like a fast SS amp with a 'slower' tube amp on the highs. (strongly held opinion) While not taking into account the latency of the amps being used, can introduce phase effects. (maybe testable)

The endless combinations of filter choices, points, slopes and type just feed the fires.

I'd suspect (again, opinion) that a properly setup (yet more opinion) bi-amp system could yield positive results.

I couldn't imagine my Panels NOT benefiting from a pair of same amps, given the close to 50:50 power distribution crossover point of 600hz.
Relative power needed is almost entirely governed by crossover point.

If you crossed over at 10khz, you could make due with a 30 watt tube amp on top of a 300 watt SS.

Than, other issues would come to the fore.
I'm sorry, but the power relative power needed IS governed by the crossover frequency. At least for music with a 'normal' distribution of frequencies.

With the crossover at 10khz, per my example, you really would need more than 90% of the power below crossover, with only 10% above.

http://sound.westhost.com/bi-amp.htm

The 50:50 point is about 350hz. I don't know that active or passive makes much of a difference. The amp will only have to produce power for those frequencies for which the speaker has a need.

The 'other' factors I was thinking about would be amp latency. How long it takes a siganl to pass thru the amp.
Also, gain and how linear the gain is will play a part in freq. balance thruout the volume range.