G2X and moogerfooger Low Pass Filter

varice · Posted: Thu Apr 12, 2012 12:28 am Post subject:

Well, it also depends on the location of the listener in relation to the speakers. Most people in a live music venue would probably not be in the “sweet spot”, on the center line in front of the speakers.

But I’m not saying that you shouldn’t give it a try. Wink

blue hell · Posted: Thu Apr 12, 2012 11:47 am Post subject:

I know that Howard did experiment with it on stage ... so hopefully he will chime in.

varice · Posted: Sun Jan 26, 2014 2:48 am Post subject:

Well, Clavia has been hiding a secret about the Nord Modular synths all along Twisted Evil

, that the stereo headphones outputs can pass DC signal levels Exclamation

So, you don’t have to modify your G1 or G2 to get at least two channels of DC CV output. This discovery about the G1 was posted here:

http://electro-music.com/forum/topic-60892.html

Gracias Nacho thumb up

I tested and verified that the G2 headphones output can also pass DC signal levels.

The G2 synth headphones output can provide two CV outputs; the left channel output (heaphones plug tip) is connected to the Output 1 signal bus and the right channel (heaphones plug ring) is connected to the Output 2 signal bus.

The polarity of the headphones output signal is inverted in relation to the G2 patch signal, so if you want the polarity of the signals to match, you will need to add a Level Converter module set to Bipolar Invert mode and connect the signal through that just before the Output module in the CV generator patch.

The maximum G2 headphones output range is greater than -8 to +8 VDC. With both the Master Level and Patch Level set to maximum (and without signal polarity inversion), a gain of 8 times the Clavia unit level of +64 will produce a DC voltage of about -8.33 volts, and a gain of 8 times -64 units equals about +8.33 volts. To achieve this maximum gain, use an Amplifier module set to a gain of 4 to amplify any +/- 64 Clavia unit signal to the maximum patch level of +/- 256 units. Then set the pad switch on the Output module to +6dB for an added gain of 2 onto the output bus. Patch signal levels much greater than these values will begin to clip.

[EDIT: to correct spelling, add details, and for clarification]

Electromagnetic Wave · Posted: Sun Jan 26, 2014 4:21 am Post subject:

Wow !!! very nice share. Thanks!

alcofribas · Joined: Oct 03, 2008 Posts: 22 Location: Eastern France

Holy Moly ! This is fantastic news ! The G2 still has secrets to reveal !

dorremifasol · Posted: Sun Jan 26, 2014 11:18 am Post subject:

Thanks for the info Varice!

dasz · Posted: Sun Jan 26, 2014 8:01 pm Post subject:

That's great! Thanks Varice!

grimley · Posted: Mon Jan 27, 2014 11:43 am Post subject:

This is fantastic news. Looking forward to trying this out with some eurorack tonight.

varice · Posted: Mon Jan 27, 2014 6:12 pm Post subject:

mosc · Posted: Tue Jan 28, 2014 3:57 pm Post subject:

anigbrowl · Posted: Thu Jan 30, 2014 3:16 pm Post subject:

Impressive!!

varice · Posted: Sat Feb 01, 2014 1:15 am Post subject:

Back on 31MAR2007, Sven (3phase) replied to this topic to state that he had done the DC CV output modification. Here is part of what he wrote:

dorremifasol · Posted: Fri May 02, 2014 7:17 am Post subject:

Here we go again ^_^

Seems that Silent Way encoder software is capable of sending CV signals out using not DC coupled interfaces, by the mean of an encoder and a specially modified cable. I wonder if such encoder could be programmed in the G2 using its modules, and make it work with the modified cables!

http://www.expert-sleepers.co.uk/siwaacencoder.html

varice · Posted: Sat May 03, 2014 2:26 am Post subject:

Hi Albert!

The Silent Way method has been proposed here before, but I don’t recall anyone posting the results of an actual test…

A post about favorable results using a G2 with Volta (which apparently works in a similar way) is here:

http://electro-music.com/forum/viewtopic.php?highlight=silent&t=39870

dorremifasol · Posted: Sat May 03, 2014 3:11 am Post subject:

I'll test if I find the components somewhere Razz

Yesterday I tried the Headphone output and works surprisingly well. I managesd to track some octaves of my Asys modular almost in tune!

3phase · Posted: Sat Jul 12, 2014 6:46 am Post subject:

3phase · Posted: Mon Oct 19, 2015 3:15 am Post subject:

Just an update to the dc enabling of outputs.
I reinstalled the output caps on the G2 and gave the DC outs dedicated mini jacks. With some extra electronics..but even without extra electronics i think now its a much better mod to leave the output caps in place but have extra jacks for the dc because this way the output caps prevent dc from getting out of the main output jacks of the G2 and therfore you can keep them permanently wired to a desk while the dc outs can be permanently wired to your synth modules and its just the patch on the g2 that decides what the output is doing..no extra plugging required..

Maybe i tried to avoid to drill holes inside the G2 before knowing whether a DC output would be worthwhile.. But by now i can say it is very much worth it. And than dedicated jacks are the technical better solution. Even better with some aktive electronics that buffers and scales the output..

I showed 2 photos how i did it in this thread here
http://electro-music.com/forum/topic-65263.html

varice · Posted: Mon Oct 19, 2015 10:29 pm Post subject:

Yes, having a dedicated output for the DC CV signal is the best way to go.

In my case, I can have the moogerfooger filter plugged in all the time. Then all I need to do is load one of the several synth patches I have built with the proper I/O routing for the filter and I’m ready to go.

I probably should use a buffer amp for the CV output, but it is working just fine as is. I may still build one though… It would be helpful for this:

I dream of having a rack full of analog filters of various types; a mini-moog Model D clone, a VCS3 clone, a TB-303 clone, a Steiner Parker, etc. Each of these have a unique sonic character that I think would add some desirable variation in color to the G2 sound.