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Old 30th March 2012, 06:20 PM   #1
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Default DIY active crossover using IRF510 or similar?

Hi all,
I recently completed a Pass Zen revisited amp. I am loving it .
Being only 10 watts
I like to use an active crossover to transition to a subwoofer. My tube xover,(diy Steve Bench), doesn't have the "grunt" to drive the Zen. Mr Bench specifies 100K ohm minimum load. An op-amp crossover seems to works fine, but , its op-amps. (Would like something better). I have used IRF510 mosfets before,(Pass BOZ preamp), and they sound very tube-like. Does anyone know of an active xover circuit I can build, using these or similar FET's? If not, I probably could use a cathode follower on the output of the Bench xover, but there seems to be a lot of negative opinion on the sound of CF circuits.
Any ideas greatly appreciated.
Thanks,
mg16
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Old 30th March 2012, 09:57 PM   #2
Itsmee is offline Itsmee  England
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How about a JFET one

B1 Active Crossover
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Old 31st March 2012, 03:04 AM   #3
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Location: western pa
Default jfet xover

I love the sound of the depletion mode mosfets that Pass used in his Zen projects. I would love to find a project using them in single ended class a ,for an active xover.
Thanks,
mg16
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