Hi Sfrounds; You may be interested; there is passive vertical biamping and passive horizontal biamping. To do vertical biamping you need a pair of identical stereo or dual mono amps (ideally). In vertical biamping, one channel drives the bass of the left speaker, and the other channel drives the mid/tweeter of the left speaker. To do this, the speakers must be bi-wireable, and an important advantage is that the amps can sit right next to the speakers and very short speaker cables can be used.
Horizontal biamping differs in that one amp drives the bass of both speakers, and another amp drives the mid/tweeters of both speakers. Some use this with a tube amp for the upper frequencies and a solid state for bass. In horizontal biamping the shortest speaker cables can be achieved by placing both amps right between the speakers.
About bridging and power; I've recently been on the 'phone with Steve McCormack discussing this very thing as I'm going to vertical biamp my speakers with McCormack amps. According to SMc when the DNA.5 (100 wpc, 8 Ohms) is bridged, it will put out 400 wpc, but when the DNA-1 (175 wpc, 8 Ohms) is bridged it will only put out about 370 wpc. Further, when the DNA-2 (300 wpc, 8 Ohms) is bridged it will put out an incredible 1200 wpc. So, the bridged power level depends on the original configuration of the amps power supply. I have a pair of DNA2s, but decided not to have the channels bridged as I don't need that kind of power. SMc is going to upgrade the amps and match them for me for biamping. Good Luck. Craig.
Horizontal biamping differs in that one amp drives the bass of both speakers, and another amp drives the mid/tweeters of both speakers. Some use this with a tube amp for the upper frequencies and a solid state for bass. In horizontal biamping the shortest speaker cables can be achieved by placing both amps right between the speakers.
About bridging and power; I've recently been on the 'phone with Steve McCormack discussing this very thing as I'm going to vertical biamp my speakers with McCormack amps. According to SMc when the DNA.5 (100 wpc, 8 Ohms) is bridged, it will put out 400 wpc, but when the DNA-1 (175 wpc, 8 Ohms) is bridged it will only put out about 370 wpc. Further, when the DNA-2 (300 wpc, 8 Ohms) is bridged it will put out an incredible 1200 wpc. So, the bridged power level depends on the original configuration of the amps power supply. I have a pair of DNA2s, but decided not to have the channels bridged as I don't need that kind of power. SMc is going to upgrade the amps and match them for me for biamping. Good Luck. Craig.