Bi-amping works - AND WELL!
By "HOW" I suspect that you mean "What is happening (re bi-amping) that is different than using a single amp with greater power...?"
The amps work more efficiently - each amp reproduces a limited bandwidth - as opposed to full bandwidth (bass or mid/high's as opposed to all). ...So, your amps do the job with less effort. Aside from offering better dynamics this can often give a sense of ease and control that is absent with a single larger amp.
BUT
Matching the GAIN of both amps is quite important. Using different amps may cause problems. i.e. If the amp you are using to drive your subs/woofers has greater gain (than the amp you are driving your mids & or tweeters with) the bass will be unnaturally emphasized. ...Imagine really strong overpowering bass.
These comments don't even take into consideration the issues regarding the integration of sound. i.e. Two amps of different makes (or different models within the same make) may sound very different. This can cause an otherwise good sounding speaker to have a Âsplit-personality - sound really incoherent.
By "HOW" I suspect that you mean "What is happening (re bi-amping) that is different than using a single amp with greater power...?"
The amps work more efficiently - each amp reproduces a limited bandwidth - as opposed to full bandwidth (bass or mid/high's as opposed to all). ...So, your amps do the job with less effort. Aside from offering better dynamics this can often give a sense of ease and control that is absent with a single larger amp.
BUT
Matching the GAIN of both amps is quite important. Using different amps may cause problems. i.e. If the amp you are using to drive your subs/woofers has greater gain (than the amp you are driving your mids & or tweeters with) the bass will be unnaturally emphasized. ...Imagine really strong overpowering bass.
These comments don't even take into consideration the issues regarding the integration of sound. i.e. Two amps of different makes (or different models within the same make) may sound very different. This can cause an otherwise good sounding speaker to have a Âsplit-personality - sound really incoherent.