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Old 31st January 2002, 01:03 PM   #1
Samuel Jayaraj is offline Samuel Jayaraj  India
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Join Date: May 2001
Location: Bangalore, India
Default 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.
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Old 31st January 2002, 01:27 PM   #2
richt is offline richt  Puerto Rico
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Join Date: Nov 2001
Location: puerto rico

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 !!!
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Old 1st February 2002, 10:32 AM   #3
Samuel Jayaraj is offline Samuel Jayaraj  India
diyAudio Member
Join Date: May 2001
Location: Bangalore, India

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.
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Old 2nd February 2002, 12:15 PM   #4
hugobross is offline hugobross  Europe
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Join Date: Jun 2001
Location: Flanders, Belgium
Hi check this out:



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

Best regards,

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Old 2nd February 2002, 09:07 PM   #5
ftorres is offline ftorres
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Join Date: Apr 2001
Location: Limoges, France

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
"Learning French is trivial: the word for horse is cheval, and everything else follows in the same way."
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