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Old 4th September 2012, 04:17 PM   #1
diyAudio Member
Join Date: May 2012
Exclamation Combining 3 Band Pass Filters

So I've been building an equalizer for an amp I built.
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Click the image to open in full size.

I'm now working on a 3 band equalizer to use with the amp for a class. I could use some help with the design. Trying to keep it simple but I'm getting a little frustrated

• The Equalizer Pedal will be powered using a 9V battery
• A push button will turn the foot pedal on and off
• A minimum 3-band equalizer will be designed
• Low (Bass) center frequency band: 78Hz (5% tolerance)
• Middle center frequency band: 1.15kHz (2% tolerance)
• High (Treble) center frequency band: 7.8kHz (2% tolerance)
• At least +/- 15dB per band

Could someone help me out with my circuit. I'm not sure how to combine the filters

Click the image to open in full size.
Click the image to open in full size.
Click the image to open in full size.

Any other comments or suggestions would be very helpful. Trying to get a working circuit and get a working model on my breadboard.

Last edited by JoshwaBurke; 4th September 2012 at 04:44 PM.
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