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Samuel Jayaraj 31st January 2002 02:03 PM

DJ Mixer
Around where I live, in DJ performances, the Denon DJ CD player is used along with a Gemini DJ Mixer. While the Denon is about the best in the industry, the sound of the Gemini is quite harsh.

Does anybody have schematics of DJ mixers? How do they manage to get -32db cut and +12db boost on the tone controls?

I am interested in building one with better quality active devices.

Thanks in advance.

richt 31st January 2002 02:27 PM


basically the gain pot is not balanced in resistance from the center
in some designs !

if you want a better sound !! buy a new mixer ! or
elliminate from the gemini, all the china electrolitic capacitors &
replace it with panasonic fc series & if the output of the mixer
have some transistor mute circuit , please rip it out completly ~!

questions let me know.


you wont be dissapointed !!!;)

Samuel Jayaraj 1st February 2002 11:32 AM


Thanks for the input. I do not own a Gemini DJ Mixer but do get it from others whenever required in a show. What I do have is a StudioMaster Club2000 - 142 Mixer which is a Multichannel mixer. I am interested in constructing the DJ Mixer from scratch. Hence, the quest for available schematics.

hugobross 2nd February 2002 01:15 PM

Hi check this out:

Indeed, as DJ, I hate those cheap names.
In Belgium we use RODEC mixers, very nice brand!!!

Best regards,


ftorres 2nd February 2002 10:07 PM


Take a look at

You can download schematics of these devices. BTW, all the Rane site is worth the visit, almost all the schematics and user manuals are here.

Hope this helps

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