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In Reply to: Re: How does Bi-Amping really work? posted by Tom Brennan on November 2, 2002 at 02:52:59:
Tom,I like the term "fool's bi-amping". Hadn't heard that before. Glad you brought that kind of bi-amping up, because it really muddies the water, terminology wise.
I have done 8 or 9 bi-amped systems over the years, some were mine, some for friends, and one for a stage system I designed for a musician friend. All but one of mine were successful, with good integration. But I worked on one for almost two years to get it really right. It's difficult to get really right, you need instruments to do it right, and there is a significant risk it won't work out at all.
Someone posted on this thread cautioning about being sure you can return the sub. That's excellent advice. I returned 4 of them last year. I was beginning to be persona non grata at several shops. But they sounded horrible and would not integrate into a music system. Home theatre for sure. Optimized for sound effects not music. I eventually ended up with a nice little 10" B&W that was quite musical, but I was never able to get it to integrate to my satisfaction.
To the original poster:
There is an alternative to bi-amping. If you run the main speakers full range, and add on a sub with the filter set fairly low, you can often do quite well. If you can find a musical sub with a built in amp it should work OK.
Or you can build your own. I built several of those in the 70's and 80's using a passive speaker level crossover feeding a large tube power amp and a separate bass speaker I built. The very high input impedance of the typical tube amp makes it easy to build the filter and include a level control. This gets you a 2nd order low pass filter, which is pretty easy to blend in. If you think you'd like to follow up on this I can help you with the construction details. It will work with your ST-70, and you don't need to change anything. The Mk III's should do very well with it. With this system, the sub needs to be centered between the two main speakers. Sometimes this can be a real problem.
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Follow Ups
- Re: How does Bi-Amping really work? - Bold Eagle 11/3/0220:10:06 11/3/02 (0)
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