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Old 14th September 2005, 11:24 AM   #1
cheater is offline cheater  Poland
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Default dj mixer equalizer - help please! :)

Hi guys, I'm looking into building my own DJ mixer (as all that's out there just lacks in my opinion, either in features, quality, or ergonomics)...

One of the most important parts is the EQ. Unfortunately, I know zero to nothing about building these. What I'm looking for is what DJs call a "kill eq" - an equalizer that is able to totally "kill" (i.e. mute (i.e. -32 dB)) a band, without giving weird resonances at other bands.
One mixer that has this kind of EQ is the Pioneer DJM 600 (that's why it's so popular - even though the line quality is crap tbh )
OK, resonances aren't that bad if you're building a modular synth, but that's not what I'm doing

It'd be nice if it were a four-band equalizer.
Also, not being bigger than a tractor wheel would also be nice. I'd probably want at least 4x2 of these in my mixer...

Hints, circuits, names anyone?
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Old 16th September 2005, 03:01 PM   #2
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Possible hint? See if you can find circuits for shelf eqs for ideas. These are a little more common in my experience, and usually let you cut low or high freqs by 12dB.

Wes
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Old 16th September 2005, 05:45 PM   #3
cheater is offline cheater  Poland
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that's the biggest feature i'm looking for, though - that ability to cut off by 36 dB
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Old 16th September 2005, 06:05 PM   #4
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Well, yes, but the circuit to cut at 36dB won't be much different than the circuit to cut at 12dB.

I didn't say it was a solution handed to you on a silver platter, I said it was a place to start looking. You'll still need to understand what you're building..

Wes
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Old 16th September 2005, 06:07 PM   #5
cheater is offline cheater  Poland
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indeed
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Old 16th September 2005, 07:53 PM   #6
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Default schematic

I, have whole service manuals , for Westax , Omnitronic , Phonic.,but I, don't know what you want ?
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Old 16th September 2005, 07:57 PM   #7
cheater is offline cheater  Poland
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zeonrider - generally, the equalizer sections.

oh, duh, you're asking me what equipment *slaps forehead*
sorry, it's a bit late in the evening
i'd have to take a look. I've actually never seen any of those brands of mixers, except for perhaps vestax...
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Old 16th September 2005, 08:42 PM   #8
cheater is offline cheater  Poland
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i've taken a look at their offerings.

could you tell me if you have any of these?


phonic: mx300 or mx306
vestax:
dfg-x2 (a 3-band eq on its own)
dcr-1200 pro (a 4-band eq on its own)
dge-x2

r-1 premium (has a 4-band eq)
r-2 premium (has a 4-band eq)

actually, it seems they're using the same eq for all of their products. no need to list them all. the "premium" should be the spiffiest ones, as it's their... well... premium line.
i heard the dcr-1200 pro was supposed to be pretty nice.

omnitronic:

dj-200 pro
fx-524
pm-524
pm-660
cm-724
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