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Chip Amps Amplifiers based on integrated circuits

Beginners single supply subwoofer active equalizer
Beginners single supply subwoofer active equalizer
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Old 24th March 2009, 10:56 AM   #1
pra3718 is offline pra3718  India
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Join Date: Jan 2009
Default Beginners single supply subwoofer active equalizer

Please find attached picture. It's working when 1st amp is set GAIN = 1

Any REMARKS ?
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Old 25th March 2009, 02:04 PM   #2
AndrewT is offline AndrewT  Scotland
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Join Date: Jul 2004
Location: Scottish Borders
Hi,
what is this supposed to do?
Why two cascaded stages?
What happens when the first stage gain is set >1?
How did you set the first stage gain=1?
Why only 12Vdc supply?
What is the maximum signal that can pass through these opamps?
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regards Andrew T.
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Old 25th March 2009, 03:17 PM   #3
pra3718 is offline pra3718  India
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Join Date: Jan 2009
Hi

what is this supposed to do?
-- > using preamp for mini sub
Why two cascaded stages?
--> Prior to this I was using single amp But I did not get good effects.
Why only 12Vdc supply?
--> I am using 15Vdc supply.

I do this all for my hobby. I am not an electronics man.
how this preamp works ? I don't know but It's sounding good for me. In general term I used Dual POT/CONTROL which has 6 pins as shows in attached picture.
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