Audio into a Frac Modular

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chamomileshark
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Audio into a Frac Modular

Post by chamomileshark » Sun Apr 25, 2021 8:01 am

While I've had my modulars for some time I've never processed audio through them.

I'm not very technical, is it safe to simply connect an input (Mic-> Preamp, of Cassette machine headphone out, line out from Zoom recorder) straight into an attenuator and from there to filters, wavefolders, envelopes, possibly oscillators? I don't want to break anything.

Also is there an issue that some of those inputs would be from stereo sources? (I can probably just use a normal patch chord from the cassette and Zoom recorder outputs).
Key Gear: Wiard 300 Series, EMS VCS3, Frac Modular (Blacet, Wiard, Bananalogue & Synthesis Technology).

Pastoral Music: Mark Ellery Griffiths
Music: https://markgriffiths.bandcamp.com/


Experimental: Mark Dalton Griffiths
Music https://markdaltongriffiths.bandcamp.com/

elmerfudd
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Re: Audio into a Frac Modular

Post by elmerfudd » Sun Apr 25, 2021 9:42 am

Most line outs are 0db (1V pp) at best (on consumer gear). Most modular are +20db (10V pp),so more than likely you will need gain to drive filters. Bugbrand has a nice dual pre available and the nannaer outs can be switched to 3.5 easily. Frac friendly module. Stereo headphone outs should be summed to mono so you don't kill your output chip. Cutting an end off an old stereo cable and installing 5k resistors on the hot leads,in the mono plug housing worked well for me. The bug pre has 1/4" inputs so more room to use, but I have made it work with 3.5 also.

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soup
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Re: Audio into a Frac Modular

Post by soup » Sun Apr 25, 2021 2:26 pm

You're not going to break anything with audio signals. Things may not sound they way you want them to but you won't break anything. DC signals like envelopes can be dangerous if you plug them into the control inputs or accidentally into the outputs of digital devices if they are not protected.

With audio signals I would just plug things into each other and take it from there. Some things will work as they are and some will require some gain or attenuation to do what you want. A number of Blacet modules have a lot of gain on their inputs and modules like the i/o or the quad mix can be used as a preamp.

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chamomileshark
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Re: Audio into a Frac Modular

Post by chamomileshark » Sun Apr 25, 2021 5:23 pm

elmerfudd wrote:
Sun Apr 25, 2021 9:42 am
Stereo headphone outs should be summed to mono so you don't kill your output chip. .
Ok, I wasn't aware of that. Could I use a stereo to 2 mono leads and just patch one of the mono jacks into the modular?

Like this Mini stereo to 2 mini jack mono
Key Gear: Wiard 300 Series, EMS VCS3, Frac Modular (Blacet, Wiard, Bananalogue & Synthesis Technology).

Pastoral Music: Mark Ellery Griffiths
Music: https://markgriffiths.bandcamp.com/


Experimental: Mark Dalton Griffiths
Music https://markdaltongriffiths.bandcamp.com/

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chamomileshark
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Re: Audio into a Frac Modular

Post by chamomileshark » Sun Apr 25, 2021 5:24 pm

soup wrote:
Sun Apr 25, 2021 2:26 pm
You're not going to break anything with audio signals. Things may not sound they way you want them to but you won't break anything. DC signals like envelopes can be dangerous if you plug them into the control inputs or accidentally into the outputs of digital devices if they are not protected.

With audio signals I would just plug things into each other and take it from there. Some things will work as they are and some will require some gain or attenuation to do what you want. A number of Blacet modules have a lot of gain on their inputs and modules like the i/o or the quad mix can be used as a preamp.
thanks Soup!
Key Gear: Wiard 300 Series, EMS VCS3, Frac Modular (Blacet, Wiard, Bananalogue & Synthesis Technology).

Pastoral Music: Mark Ellery Griffiths
Music: https://markgriffiths.bandcamp.com/


Experimental: Mark Dalton Griffiths
Music https://markdaltongriffiths.bandcamp.com/

elmerfudd
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Re: Audio into a Frac Modular

Post by elmerfudd » Sun Apr 25, 2021 5:57 pm

Yes that cable is fine. You just don't want to plug a mono into a stereo out, you short one side of the signal and over time will damage the output driver. I like using a resistor cable to make the load higher on the external device output, have just found it to sound better, despite a little gain loss. Some type of preamplifier will allow your external signal to drive filters better and allow for more resonance, self osc. Also some clipping of the signal will allow an electric kalimba to drive a miniwave, sort of....

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chamomileshark
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Re: Audio into a Frac Modular

Post by chamomileshark » Mon Apr 26, 2021 7:54 am

thanks Elmer!
Key Gear: Wiard 300 Series, EMS VCS3, Frac Modular (Blacet, Wiard, Bananalogue & Synthesis Technology).

Pastoral Music: Mark Ellery Griffiths
Music: https://markgriffiths.bandcamp.com/


Experimental: Mark Dalton Griffiths
Music https://markdaltongriffiths.bandcamp.com/

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