CP3PLUS Mixer by FEEDBACK.

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strat-1
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CP3PLUS Mixer by FEEDBACK.

Post by strat-1 »

Hello. We are FEEDBACK Projects.

The CP3PLUS is an accurate recreation in Eurorack format of one of the most appreciated vintage mixer for it's rich and beautiful sound.

We know that there are already available projects based on the same famous mixer so probably the question is why we did it. We are musicians and synth DIYers and already built before variations on this theme, but practical experience showed us that there are a few things we wanted to do different to improve it:

- There were many situation we found the 3 inputs were not enough so we decided for four inputs (like the original).

- Previous projects didn't offer both inverted and non inverted polarity outs but a crossfade between the two outs. This has two drawbacks, you don't have access to both outs at the same time (which could be very useful in some patches). Also the distortion pattern is not the same because the harmonic structure of the distortion is affected by the position of the output croossfade pot. We decided for both outputs and to have a similar distortion pattern like in the original mixer.

- Another addition is a four jack multiple (like in the original mixer). It is a very good idea to have a multi close to the mixer. Let's say you want to mix three oscillators for a rich sound and you want to drive them from the same CV source. Having a multi close to the mixer makes easy to distribute CV to all three oscillators.

- The last improvement is related to ergonomics. We understand that many modular users try to make compact setups for live performance, so weight and module HP are a big concern. But we find all the crowded modules kill the ergonomics making access to pots and jacks a struggle. So we decided that we will make a version of this mixer that has a good compromise between ergonomics and panel dimensions. Look at this mixer like a module mostly made for your non portable studio modular setup.

The module is built with high quality parts, alpha pots, wima caps, panasonic low esr electrolitic capacitors. Also the module repects the ROHS standard, high quality ROHS solder wire was used.

> Tech specs:

-width 10HP
-22mm depth behind the panel, including the power connector
-4 mono analog input
-4 input level pots
-1 dual level pot
-one inverting and one non-inverting output jacks
-one 4 jack passive multiple
-standard 10 pin euro power (+12V / -12V)
-power consumption +12V 23mA -12V 25mA


The price for the module is : 70EUR
shipping to EU : 10EUR, non EU : 15EUR

In stock : 10pcs.

If you want one please contact me by pm.

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enj_music
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Post by enj_music »

Any sound demos available?
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hawkfuzz
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Post by hawkfuzz »

Mmmmmmm. Very nice.
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strat-1
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Post by strat-1 »

enj_music wrote:Any sound demos available?
[/s]I recorded some demos.

In the first track I change continuously the mix between 3 waveforms from 3 System-X VCO's. Saw, Square and Sine.
When I raise one channel near the maximum you can hear the characteristic sound of CP3 mixers, the transistors starts to add harmonics to the sound. You can here it especially on sine waveform.
The setup is basic vco's to CP3PLUS to vca.

https://soundcloud.com/strat1/cp3plus-capabilities

In the second demo I play again with the waveforms volume, but the mixer is patched to a vcf>vca>chorus 106.

https://soundcloud.com/strat1/cp3-to-106-noodle
jbaptiste64
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Post by jbaptiste64 »

strat-1
Hello where can I buy this in Europe ? thanks
tomliem
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cp3plus

Post by tomliem »

hi is the cp3 plus still available?
tomliem
Learning to Wiggle
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Joined: Sat Aug 24, 2013 8:43 am

cp3plus

Post by tomliem »

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