JohnRice

Re: Can I bi-amp like this...?

Trying to direct you in a more productive direction, here is an over simplified assessment of the benefits of bi-amping. You are basically splitting the power used between the tweeter (and midrange, if the speaker has one) and the woofer. The problem is, low frequencies consume the lion's share of power, so there is really little to gain. IOW, just to throw out an general analysis. The higher frequencies may take 20% of the total power, with the woofer consuming 80%. So, by bi-amping, all you really gain is a reduction in power demand of 20%, since the woofer amp still has to deliver the vast majority of the power, and the tweeter is essentially unchallenged.

You will gain significantly more benefit by adding a powered sub, crossed over at a reasonable point, say 100 Hz, and staying with one amp for the speakers. The significant load of the lowest bass will be stripped off thhe main amps and sent to the sub, which is specifically designed to deal with it. The main amps are far less stressed, plus the speakers are also not driven to their limit. Everything improves, so long as you get a decent sub and set up up correctly.


EDIT: Adding even more to what Wayne and I are saying, there is also the factor of the amps' input impedance. Just matching the sound level won't necessarily produce consistent output across the audible range, since the input impedance of different amps can vary widely, and the pre-amp will not always handle them consistently. So, you see, this is actually quite complicated, and the only way to guarantee proper results is with two matched amps.

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