RE: I absolutely disagree and note that Kef did too in their manual for the spkrs.

Forget equalization and impedance compensation for a second... how about basic things like filter Q? Yes, some guys will pull their LR24 PA crossover out of the closet and bi-amp a speaker because they know the crossover point and relative levels of the drivers involved. But this creates a whole new speaker.

Yes, you need a guy who can measure (and properly interpret measurements) to do a passive to active conversion. As far as how close you'd need to match the existing response curve, some would say +/- 0.1 db but I think this is to associate much higher sensitivity to changes in SPL than the human ear is capable of. Some people can't tell when a tweeter is wired antiphase with a significant null!

In any case, you're right. Many say that passive bi-amping is a waste of time but I don't think this is necessarily the case. I think many advocates of active crossovers think passive crossovers in general are a waste of time, so bi-wiring/bi-amping makes no sense to them in the passive domain at all.

There are obvious benefits to manipulating which currents the amps see, and separating bass current from high frequency current, and doing it in different ways (horizontal, vertical, and even quad monoblocks).

Cheers,
Presto

Cheers,
Presto

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Follow Ups Full Thread

Topic - Biamping KEF 107/2s - dbphd 18:18:56 08/04/12 (16)

My advice is to suggest you readEF's own installation manual - Timbo in Oz 07:35:48 08/05/12 (1)

RE: My advice is to suggest you readEF's own installation manual - dbphd 20:39:27 08/05/12 (0)

RE: Biamping KEF 107/2s - SgreenP@MSN.com 20:49:35 08/04/12 (4)

RE: Biamping KEF 107/2s - ahendler 15:02:58 08/05/12 (2)

I absolutely disagree and note that Kef did too in their manual for the spkrs. - Timbo in Oz 20:36:38 08/05/12 (1)

RE: I absolutely disagree and note that Kef did too in their manual for the spkrs. - Presto 10:36:22 08/09/12 (0)

Did you try horizontal as well as vertical? - Timbo in Oz 08:03:58 08/05/12 (0)

RE: Biamping KEF 107/2s - Presto 19:35:15 08/04/12 (8)

agree - Joe Murphy Jr 07:16:11 08/06/12 (0)

RE: Biamping KEF 107/2s - hahax@verizon.net 21:02:11 08/04/12 (6)

There are very good arguments in favour of hosizontal bi-amping including only having ONE power supply working - Timbo in Oz 07:53:00 08/05/12 (3)

RE: There are very good arguments in favour of hosizontal bi-amping including only having ONE power supply working - Presto 12:39:12 08/05/12 (2)

Your obsessing too much confusing a decent amount of channel separation - Timbo in Oz 20:45:23 08/05/12 (1)

RE: Your obsessing too much confusing a decent amount of channel separation - Presto 10:13:00 08/07/12 (0)

RE: Biamping KEF 107/2s - Presto 00:51:16 08/05/12 (1)

You do lose on isolation of power supply effects, which is kind of predictable.tble - Timbo in Oz 08:02:28 08/05/12 (0)

Follow Ups

RE: I absolutely disagree and note that Kef did too in their manual for the spkrs. - Presto 10:36:22 08/09/12 (0)

RE: I absolutely disagree and note that Kef did too in their manual for the spkrs.

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