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Brian Clark G.S.I. Electronic Crossover X-1
Brian Clark G.S.I. Electronic Crossover X-1
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Old 25th February 2019, 12:09 PM   #1
john65b is offline john65b  United States
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Default Brian Clark G.S.I. Electronic Crossover X-1

Does anyone have any info on this active crossover? I picked one up on the bay and wondering what the crossover point is (the X-1 is a 2 way).

I would open it up but I do not yet have it in my possession...was planning on sending tone thru it to try to determine the crossover point...need around 250hz for my Magnepans...

Anyone familiar with it?
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Old 25th February 2019, 10:22 PM   #2
llwhtt is offline llwhtt  United States
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I have a bunch of Brian Clark/GSI preamp schematics that I got from Andy Fuchs of GSI many years ago. Try Andy at Fuchsaudiotechnology.

Craig
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Old 25th February 2019, 11:04 PM   #3
john65b is offline john65b  United States
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Thanks - I will try to make contact with Andy.
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Old 3rd June 2019, 05:06 PM   #4
john65b is offline john65b  United States
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Anyone know anything about these GSI units?
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Old 4th June 2019, 05:58 PM   #5
llwhtt is offline llwhtt  United States
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No luck with Andy?

Craig
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Old 4th June 2019, 08:06 PM   #6
john65b is offline john65b  United States
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No, crickets...
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Old 26th July 2021, 04:09 PM   #7
FUCHSAUDIO is offline FUCHSAUDIO  United States
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Just saw this (can you tell I don't come here often ?). That unit uses the formula c = one over F, so (for example) a .01 capacitor will get you 100-hz rolloff and so forth. They can be upgraded with better chips and larger power supply filters (we have serviced a few), and it's still a damn good crossover by today's standards. I still service the old NYAL and GSI products from time to time. I don't have too much documentation, since GSI was closed about 30 years ago.

Fuchs Audio Technology
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Old 28th July 2021, 05:12 PM   #8
john65b is offline john65b  United States
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Thanks for reply Andy - unit now up for sale...moved on to use something ese....

Thanks
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Old 28th July 2021, 05:43 PM   #9
FUCHSAUDIO is offline FUCHSAUDIO  United States
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All good, just figured I would fill you in on how it's adjusted.
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