madbeanpedals::forum

Projects => General Questions => Requests => Topic started by: raulduke on November 30, 2016, 11:13:05 AM

Title: DIY:RE Colour Module Pedal Conversion
Post by: raulduke on November 30, 2016, 11:13:05 AM
DIY Recording Equipment (DIY:RE) have a DIY API 500 module available called 'Colour'.

It's designed to house different distortion/saturation 'modules' for imparting some analogue vibe/mojo/spice onto recordings.


The module has already been converted over into the Eurorack domain.

I think it is waiting for some enterprising PCB guru (nudge nudge  ;) ;)) to have a go at a Guitar Pedal version.


Some of the circuit and schematics are really interesting (transformer saturation circuits etc.), and the module format/design is already set, so it would make a cool project.

The product page is here:
(http://www.diyrecordingequipment.com/collections/colour)
Some of the modules that have caught my eye:
http://www.diyrecordingequipment.com/collections/colour/products/awb95-cassette-tone-colour (http://www.diyrecordingequipment.com/collections/colour/products/awb95-cassette-tone-colour)
http://www.diyrecordingequipment.com/collections/colour/products/tm79-colour (http://www.diyrecordingequipment.com/collections/colour/products/tm79-colour)
(http://cdn.shopify.com/s/files/1/0698/2265/products/AWB95.jpg?v=1473280007)

Title: Re: DIY:RE Colour Module Pedal Conversion
Post by: midwayfair on November 30, 2016, 11:29:32 AM
So the "transformer saturation" one is ... hard clipping diodes.

And the Multistage Saturator is ...

Hard clipping diodes. It uses MOSFETs, but they're just acting as silicon diodes in that case because they didn't use a series diode to block the reverse conduction to use only the DG-S junction (which now does nothing because the silicon diode going the other way is now conducting at a much lower Fv). The parallel resistor is there to attenuate the signal level to keep it from clipping as much with a typical line level.

You might get some decent sounds out of the transformers, but it's silly that they advertise these as transformer-involved anything since almost all the lifting is done by the diodes. It's probably just an inexpensive transformer with poor frequency response -- so you can tell it's in the circuit but you're probably not saturating it much if at all using these.

I'm not suggesting that they sound bad or anything, only that the transformers might be added cost that, strictly speaking, might not need to be there.
Title: Re: DIY:RE Colour Module Pedal Conversion
Post by: raulduke on November 30, 2016, 11:50:32 AM
You may be right, and I would usually agree look at this stuff skeptically.

However, the guys who designed some of these modules are pretty clued up and experienced in the pro audio/recording world, so I think they do know at least a little.

Eg. the guy who has done the multistage and cassette modules also designed this stuf: http://eisenaudio.com/ (http://eisenaudio.com/)

There is a more detailed description of one of the modules here if you are interested:
http://www.diyrecordingequipment.com/collections/colour/products/tm79-colour (http://www.diyrecordingequipment.com/collections/colour/products/tm79-colour)
Title: Re: DIY:RE Colour Module Pedal Conversion
Post by: JC103 on December 28, 2016, 10:16:07 AM
I was just looking at these the other day! Would love to see them ported over to the stomp box world. At the moment the 15ips has me thinking it could be great in a modded Boss DD-3 as a feedback loop insert.