Help to find an inexpencive active Xover


I want to experiment with bi-amplification using my DIY passive preamp. I have Totem Forest loudspeakers. For midrange/bass I want to use my Bryston 3b-st and for tweeters I want to use Moretto tube mono 15W/ch class A power amplifiers.
First of all, I've never had any experiences with active Xovers so I need someone to tell me what to start with and what will be the reasonable amount to spend on that device.
Secondly I want some useful theoretical preliminary discussions to define all advantages and disadvantages of an upcomming in my head experiment.
And finally I'd like to know anyone who's ever used bi-amplfied setup for 2-way speakers.
marakanetz

Showing 1 response by sean

The Marchand design is quite flexible, reasonably priced and built pretty well. It also offers a "Q" adjustment, which controls overlap between the drivers at the point of crossover. As such, you can "fine tune" the system to a much greater extent than you can with other crossovers that lack this feature. I own and have been using an upgraded version of the XM-9 three way crossover with great results.

As to the benefits, you will have MUCH greater dynamic range, increased detail, etc... The results are NOT subtle when properly done. You have to be able to DIRECTLY drive the speakers though with NO crossover circuitry for best results. The only thing that might be acceptable would be some form of impedance compensation or notch filter.

I too would suggest contacting the manufacturer of your speakers to find out if this is a viable plan BEFORE buying anything. Vince is a nice guy and will work with you as best possible. Sean
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