Crate GX1200H amp schematic - Active Bandpass Control - diyAudio
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Old 23rd November 2004, 05:14 AM   #1
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Default Crate GX1200H amp schematic - Active Bandpass Control

I'm not really looking for the schematic but someone familiar with it or Crate amps in general.

My lead gain channel has an active bandpass filter and 2 band EQ.
I want to use a lower frequency in the midrange that the bandpass control will boost or cut.

I want it a good bit muddier and gutteral.

I'm assuming all I really need to do is change a cap, but I have no clue which one.

Does anyone know or have any ideas??

......maybe tell me which value it would likely be and what would be a good replacement to change it to a lower bandwidth frequency.
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Old 10th December 2004, 10:10 AM   #2
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Default ............?

Damn guys, don't answer all at once now.
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Old 15th December 2004, 04:27 PM   #3
Giaime is offline Giaime  Italy
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http://www.google.it/search?hl=it&q=...hematics&meta=

Not intended to offend you, but have you searched on Google?

And a suggestion: on most amps the preamp is the same. Try to find a smaller/larger brother of your amp and notice if the pre controls are the same. Might be a starting point..
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Old 30th December 2004, 04:16 AM   #4
BbbyBld is offline BbbyBld  United States
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find out where the low end is cut before the gain stages and go for a bigger cap value with a pot in series so you can adjust the "muddiness" you want.
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