Originally Posted by Wilford
It's not true that Bi-Amp does not give better sound.
I'm Bi-Amping my 2 front speakers with good result. They are getting more alive, they opens up and give a overall better sound.
I am talking about Bi-Amp, not Bi-Wire.
Bi-Amp gives the 2 part of the speaker more power, as it does not have to share the power from just 1 Amp.
With passive biamping, the bass and treble signals are not separated before being sent to the speaker enclosure as there is no 'active crossover' in the circuit anywhere. You are sending a full range signal down every wire. The signals are still processed by the passive crossover in the speaker enclosure itself, unless this has been physically removed or disconnected, which I am betting is the case here.
As for more power, if you are lacking sufficient power to drive your speakers cleanly to the levels you need without clipping, then what you need is a more powerful amplifier.
If you were previously driving your speakers cleanly, without clipping, to the SPL peak levels you require, then further amplifier power is unnecessary and is, in fact, wasted. Amplifier watts that are 'left on the table' achieve nothing at all.
Of course, proper biamping, with electronic crossovers, can bring some benefit to the situation, especially for those who design their own speakers. Probably the best examples of proper biamping are in commercially made 'active' speakers where one amp is used for the bass/woofers and a separate amp is used for the mid/HF drivers. This certain knowledge of the capability of both the drivers and the amps allows the designer to 'max out' the performance of the drivers in the cabinet and to use DSP appropriately as needed in order to get the very best out of the drivers. But that is such a totally different ball game to the "passive biamping" under discussion that the very fact of using the same word in the context ("biamping") is highly questionable.