Polyphonic 5u Systems!

Moog, Synthesizers.com, MOTM, Modcan, Moon and others..... Go big!

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benjaminhowell
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Polyphonic 5u Systems!

Post by benjaminhowell » Tue Nov 17, 2020 10:36 am

So as someone taking the post-eurorack leap into 5U systems, I'm looking into building a polyphonic four voice system... does anyone else have a poly system? Please share pictures or midi to cv modules / converters that helped you build your system!

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Voltcontrol
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Re: Polyphonic 5u Systems!

Post by Voltcontrol » Tue Nov 17, 2020 11:25 am

Mutable Instruments Yarns in this one. :)
oozitron wrote:
Fri May 29, 2020 12:05 am
I built my own:


Here's an in-depth demo of the single voice:


This thing is better than I expected. My favorite synth :goo:

Drew
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Voltcontrol
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Re: Polyphonic 5u Systems!

Post by Voltcontrol » Tue Nov 17, 2020 11:51 am

CV.OCD or MidiSizer also might be options for you.

CV.OCD: https://www.tindie.com/products/hotchk1 ... to-cv-box/
MidiSizer: https://midisizer.com/midi2cv-mk2/
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Re: Polyphonic 5u Systems!

Post by Voltcontrol » Tue Nov 17, 2020 11:55 am

Ah! Looking up the MidiSizer on here now I see that there's an earlier thread that might interest you:

viewtopic.php?f=24&t=99858

kvitekp wrote:
Wed Dec 06, 2017 8:57 pm
Here's a 5U MOTM format moduled based on Midi2CV Mk2 board. Lots of configuration options plus extra modulation sources (advanced LFO and AHDSR EG) controlled from external MIDI controller.

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Image

/Peter
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Re: Polyphonic 5u Systems!

Post by boothnavy » Wed Nov 18, 2020 12:03 pm

I have a 4 voice Modcan B system. I use the Kenton Pro4 in polyphonic mode, which cycles through the 4 CV outputs. Works just fine.
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Re: Polyphonic 5u Systems!

Post by Grumble » Wed Nov 18, 2020 4:58 pm



Does this count? :despair:

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Re: Polyphonic 5u Systems!

Post by Thorsday » Wed Nov 18, 2020 9:39 pm

I use my many voice modular as a multitimbral event generator. Not traditional poly synth sounding, per se.

Tubbutech and Kenton MIDI to CV products are the best I've ever used.

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Re: Polyphonic 5u Systems!

Post by josaka » Wed Nov 18, 2020 10:37 pm

looked at this for a while ..but decided 5u is not good for poly.. (good for some heavy sounds + sfx !)
thinner voiced poly synths are much better at poly sounds !
MFB Synth pro goes great with 5u..

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Re: Polyphonic 5u Systems!

Post by dialekt » Thu Nov 19, 2020 9:33 am

Get all the modules for one full voice and experience the degree of difficulty for patching and dialing in the sound you desire. Then imagine spending 4 times that amount of money on modules, cables, cabinets, power needs and such. Then imagine spending 4 times the amount of time on patching and dialing them all to be identical. Then imagine the space it will take up. Even if doing this affordably in 5U you are getting into top shelf vintage poly synth territory in regards to money and losing a lot of space and time.

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Re: Polyphonic 5u Systems!

Post by hamildad » Thu Nov 19, 2020 10:42 am

Someone recently was just going to use 4x Oakley ASVs.

which makes things easier, you would still need to mult everything and your gains would be negligible to compare against a nice sounding Poly.

Paraphony is where its at with 5U for those lovely big chord stabs etc...
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Re: Polyphonic 5u Systems!

Post by Rex Coil 7 » Thu Nov 19, 2020 11:02 am

hamildad wrote:
Thu Nov 19, 2020 10:42 am
Someone recently was just going to use 4x Oakley ASVs....
Second post, first video ... of this thread.

:tu:
5U MODULAR NORMALIZING PROJECT (for your entertainment) viewtopic.php?t=78836&highlight=
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Re: Polyphonic 5u Systems!

Post by robotmakers » Thu Nov 19, 2020 9:05 pm

Encore Expressionist is a fine poly MIDI-CV converter. I use two. Here’s a golden oldie. Four voice, Moog and other modular.


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Re: Polyphonic 5u Systems!

Post by josaka » Thu Nov 19, 2020 10:13 pm

dialekt wrote:
Thu Nov 19, 2020 9:33 am
Get all the modules for one full voice and experience the degree of difficulty for patching and dialing in the sound you desire. Then imagine spending 4 times that amount of money on modules, cables, cabinets, power needs and such. Then imagine spending 4 times the amount of time on patching and dialing them all to be identical. Then imagine the space it will take up. Even if doing this affordably in 5U you are getting into top shelf vintage poly synth territory in regards to money and losing a lot of space and time.
and thats only 4 voices.. ^ ! :) .. the mfb is 8 voice 3 discrete osc per voice + 3 possible sub osc - each osc has Kobol style wave sweeping- ring mod - FM - 2 filters -stereo- and 3 envelopes - 2 x lfo = etc = its tiny and has midi CC for most controls :) ! under €1000

I love love love my 5u.. spent years on it .. get unbeatable sounds/tones on it.. got enough stuff to have a crazy 8 voice if I wanted.. but the amount of work to get a string sound from it then a different sound then you need to redo the strings !.. ! chaos.. spend your whole life setting it up.. gets dull ..fast..

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Re: Polyphonic 5u Systems!

Post by hamildad » Fri Nov 20, 2020 5:44 am

Rex Coil 7 wrote:
Thu Nov 19, 2020 11:02 am
hamildad wrote:
Thu Nov 19, 2020 10:42 am
Someone recently was just going to use 4x Oakley ASVs....
Second post, first video ... of this thread.

:tu:
Saw the white livery and the name Oaklyheim, and just thought that was an Oberheim 4 voice...

Silly me! :doh:
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Re: Polyphonic 5u Systems!

Post by DrReverendSeance » Fri Nov 20, 2020 5:51 am

robotmakers wrote:
Thu Nov 19, 2020 9:05 pm
Encore Expressionist is a fine poly MIDI-CV converter. I use two. Here’s a golden oldie. Four voice, Moog and other modular.

Wow, super track Robotmakers!

+1 for the Encore Expressionist (although to be fair I’ve never used a Kenton so couldn’t compare them)

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Re: Polyphonic 5u Systems!

Post by robotmakers » Sat Nov 21, 2020 5:30 pm

DrReverendSeance wrote:
Fri Nov 20, 2020 5:51 am
robotmakers wrote:
Thu Nov 19, 2020 9:05 pm
Encore Expressionist is a fine poly MIDI-CV converter. I use two. Here’s a golden oldie. Four voice, Moog and other modular.
Wow, super track Robotmakers!

+1 for the Encore Expressionist (although to be fair I’ve never used a Kenton so couldn’t compare them)
Thanks very much! That one was played live, with purposely different tonalities on each voice. Here's another one, also live, with all the voices set up to approximate each other and the whole mess crushed through an Eventide Instant Phaser. These were interesting experiments, but it's a true pain in the neck to work this way. If you want a poly, VSTs or dedicated hardware polys are the way to go.

Cheers,
Roger


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Re: Polyphonic 5u Systems!

Post by Gizmo » Sun Nov 22, 2020 7:30 pm

CV.OCD works for me. I had an MU panel made after tiring of converter cables. My system is fairly robust and can do three voices nicely, four is a stretch without sharing some processing. Haven't seriously needed four anyway.

My post describing the panel

And yes, I agree a true poly synthesizer is the better choice. More than four voices too.

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Re: Polyphonic 5u Systems!

Post by benjaminhowell » Thu Nov 26, 2020 2:02 pm

dialekt wrote:
Thu Nov 19, 2020 9:33 am
Get all the modules for one full voice and experience the degree of difficulty for patching and dialing in the sound you desire. Then imagine spending 4 times that amount of money on modules, cables, cabinets, power needs and such. Then imagine spending 4 times the amount of time on patching and dialing them all to be identical. Then imagine the space it will take up. Even if doing this affordably in 5U you are getting into top shelf vintage poly synth territory in regards to money and losing a lot of space and time.
Thats the goal baby!

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Re: Polyphonic 5u Systems!

Post by burdij » Thu Nov 26, 2020 4:13 pm

This MIDI/CV converter offers up to 8 high resolution (16 bit) and 2 medium resolution (12 bit) CV outputs and 8 0-5 Volt gate outputs. Monophonic and polyphonic modes are programmed by assignment of MIDI input channels to analog output channels. Input can be via a DIN MIDI connector or a USB MIDI connection (either as a DEVICE or HOST). In addition there are DIN MIDI clock inputs and outputs to interface with external sequencers, drum machines, etc. The unit has storable/recallable calibration tables and an auto-calibration function that uses the AUX analog inputs.

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An expander module adds an additional 8 high resolution CV outputs and 8 gate outputs.

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Re: Polyphonic 5u Systems!

Post by KSS » Thu Nov 26, 2020 10:00 pm

Woah! Nice!
Price?
CV range?
5 or 10V gate/trig?

Time frame to launch?

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Re: Polyphonic 5u Systems!

Post by Dilibob » Fri Nov 27, 2020 1:21 pm

i have a 4 voice 5u. for each voice: 2 vco, 1 envolope, 1 filter, 1 vca. i have turned the system into making noises and effects now though (i do all polyphonic stuff on computer now). one nice thing of a doing a polyphonic 5u is that every module can be used for something else (really i guess i dont use the 5u midi interface for anything but the polyphonic, and that was kind of expensive).

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Re: Polyphonic 5u Systems!

Post by burdij » Wed Dec 02, 2020 12:21 pm

KSS wrote:
Thu Nov 26, 2020 10:00 pm
Woah! Nice!
Price?
CV range?
5 or 10V gate/trig?

Time frame to launch?
Here are some specs. The CV range on the converter module is set by menu selection. The range on the extender is controlled by internal jumpers. Price of the converter module is $429. The price of the extender is $249. These are available from time to time. If you want to be notified when units are available, please PM me.

Technical Specifications - GMS744MU Multichannel MIDI/CV Converter

Each Channel

Voltage Scale
1 Volt/Octave - .0833 Volts/Semitone

MIDI Note Range
Note number 0 - 127 produces
-4.0 V to +6.0 V
0 V = MIDI Note #48 = C4

D/A Converter Output
16 Bits; full-scale range +-10 V
Program selectable - +-5 V or 0-10 V
Zero volts setting - C2, C3, C4

Gate/Trigger Output
0 - +5 V

Module Power
+15 Volts 30 mA.,
-15 Volts 25 mA.,
+5 Volts 75 mA

Module Size
Panel height - 8.75 inches (222 mm);
Panel width - 4.25 inches (108 mm);
Depth (behind panel) 2.125 inches (54 mm)
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While website and store updates are in progress, access the Grove Audio Synth Store
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Re: Polyphonic 5u Systems!

Post by KSS » Wed Dec 02, 2020 8:04 pm

Thanks burdij!

Is there a manual to read more detail about features and limitations?

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