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Old 16th January 2007, 11:49 AM   #1
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Default Mission 75AS Schematic

Hi

Does anyone have or know of a schematic diagram for the amp on these subs. If I remember correctly the amp is a Cyrus built amp.

Thanks
Brent
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Old 16th January 2007, 11:54 AM   #2
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Got a pic?
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Old 17th January 2007, 07:37 AM   #3
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Sorry about the quality (they were taken on my phone)

100~200W iirc

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Brent
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Old 17th January 2007, 10:04 AM   #4
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Ah, I was hoping that they would be similar to a couple of other bass amps that I do have schematics for, but unfortunately they are very different. Sorry.
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Old 17th January 2007, 10:15 AM   #5
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Never mind cheers

Ive changed the caps on the various power rails and need to change the op amps for the gain , xover and phase.

It uses fairly boggo TL074CN (quad) , a was thinking of using OPA4134 but thought id ask if there is an ideal subwoofer opamp. I could always use dual opamps and mount on a pcb to make them quad.

Brent
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Old 17th January 2007, 10:36 AM   #6
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Unless you have something strange going on, then the OPA4227 is a pretty good quad to go with. I've used it in active crossovers before, and it works well.
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Old 17th January 2007, 11:05 AM   #7
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cool

Ill give that one a whirl

Brent
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Old 17th January 2007, 11:05 AM   #8
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The best opamp I've found for bass is the AD826 but it's only available in dual packages.
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Old 17th January 2007, 11:20 AM   #9
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Ta! another one added to the list

Brent
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