Wayne Joness SBC-1324 Roland Vintage 24 and Modern 13 Pin Converter

Published on Nov 26, 2018 WayneJoness

Demo of the Wayne Joness SBC-1324 with the Roland G707 guitar and GR-300 guitar synth, and the Moog MP-201 Mulit-Pedal. The SBC-1324 is a converter with both 13 and 24 pin inputs, and 13 and 24 pin ouputs. The SBC-1324 was also featured here with a G-707 back in 2012. Below are some pics and info on its creation from joness.com.

"Back in 2009 I was approached by a very talented Canadian guitarist who wanted to be able to control both vintage Roland 24 pin GR-series synthesizers and modern Roland 13 pin GK-series synthesizers with one guitar, either a 13 or 24 pin guitar.

The SBC-1324 is the unit I built to meet this need. The unit has both 13 and 24 pin inputs, and a master analog switch to select between the two. There are six amplifiers for each string input, used primarily to boost the 13 pin signals to the 24 pin format, but they can also be used individually to amplify any single string input, whether 13 or 24 pin.

The unit also generates all the control voltages, plus hex fuzz, needed for the vintage Roland GR-series. For each control voltage, there is a switch to select from the signal coming from the guitar, or the internal control voltage.

In additional, there are control voltage inputs on the back for all four vintage control voltages, so that an external pedal, like the Moog MP-201, can be used as a control modulator. To top it off, an external control pedal can be used as the master control for each control voltage.

This was a one-off project, all hand-wired using perf boards and point-to-point wiring. To illustrate how to use the unit, I made several videos (shown below) that step through all the features."

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Roland JX-3P JX-8P GR-700 4x Memory Expansion M-16C Analog Synth

Published on Jan 2, 2016 WayneJoness

"http://www.joness.com/gr300/GR-700.ht... This video will show you how to quadruple 4x the memory of your vintage Roland synthesizer. Works for any synth designed to use the M-16C for memory storage"

Roland GR-77B Analog Bass Synth with RC-1324-VR and GK-3 Guitar

Published on Jan 4, 2014 WayneJoness·278 videos

http://www.joness.com/gr300/GR-77B.htm

"A few years ago I was asked the question: can you play a Roland GR-33B bass guitar synth with a Roland G-303 guitar? Intrigued by this question, I tested it out, and made a video clip of a Roland G-303 guitar playing a GR-33B bass synth. It works pretty well, though I have to note that the GR-33B is set up only to respond to strings E, A D and G, so you get output on four strings, instead of six.

I wanted to do a similar test with the a GR-77B, so I am using this GR-77B synth, which while it has some wear and tear, functionally is in perfect condition, all the switches work, the unit had all the orginal factory prestes, etc. And like the GR-33B, I found out that it also works really well with a guitar input."

Roland GR-700 PLUS 13 - Vintage Analog Guitar Synthesier w/ 13-pin Output, Memory Upgrade

Published on Oct 17, 2013

http://www.joness.com/gr300/GR-700.ht...

"The GR-700 PLUS 13 offers a significant upgrade over a standard vintage Roland GR-700:

First and foremost, this GR-700 has a custom printed circuit board installed to buffer the internal guitar synth signals, and provide a modern, 13-pin Roland synthesizer output. A vintage Roland guitar connected to this GR-700 will be able to access both the classic analog sounds from the GR-700, plus the latest in cutting edge Roland guitar synth tones, using the Roland GR-55 or VG-99.

The active circuitry is part of a DB25 input card, which frees the GR-700 user from searching for hard-to-fnd, expensive 24-pin cables. This GR-700 can use data-grade, shielded 25-pin cables which offer improved performance over the original Roland cable, at a fraction of the price.

To connect this GR-700 to a vintage Roland G-707 guitar, included is a matching DB25 output card for a Roland G-707 guitar. And more than just a 24-pin to 25-pin adapter, this card has a Roland G-202 poly distortion, hex fuzz circuit onboard. Unlike the G-202/303/505 or 808 guitars, the G-707 did not include hex fuzz. With this card, the G-707 has the same full range of capabilities as the other Roland guitars."

Filter-Buffer Roland 13-pin GR-55 VG-99 Guitar Synth Tracking Optimizer and Efx

Published on Oct 9, 2013

http://www.joness.com/gr300/Filter-Bu...

"The Filter/Buffer does three things: first, the six subsonic filters remove non-musical and mechanical noise from the output of a 13-pin Roland guitar synth controller to improve synthesizer tracking and COSM modeling.

Second, the Filter/Buffer provides two buffered auxiliary inputs to enable non-GK equipped guitars or any audio source to access COSM amp modeling and effects in a Roland guitar synthesizer like the GR-55.

Finally, the Filter/Buffer adds a master effects loop for both the two auxiliary inputs, and the normal guitar output from the Roland 13-pin guitar synth controller."

Roland GR-300 Guitar Synth SN 232801 with Wayne Jones RC-1324-VR

Note: Auction links are affiliate links for which the site may be compensated.

via this auction
Note: I added a new Wayne Jones label to the site. New posts will get them. For older posts, click here.

You can find a video of the RC-1324-VR previously posted here.

"Here's a package deal that will get you playing a modern 13 pin guitar synthesizer controller with a vintage Roland GR-300 Guitar Synthesizer module.

** This system is not recommended for use with GODIN 13 pin guitars ** See below for more information.

The winning bidder will receive the following:

1) One of Roland GR-300 Synthesizer Module with upgraded capacitors and a DB25 pin input. Unit tested by none other than Wayne Joness in January 2013.

2) One of RC-1324-VR 13 to DB25 pin converter. Built by Wayne Joness in January 2013 for myself.

3) One of DB25 pin cable to connect the RC-1324-VR to the GR-300

The overall condition of everything is excellent for the GR-300 and near mint for the RC-1324-VR. Everything is in proper working condition.

You can get more information on the RC-1324-VR at Wayne's site: http://www.joness.com/gr300/RC13.htm

Please Note: The GR-300's input has been changed from one that fits the traditional 24 pin cable to a DB25 style input, allowing for use of inexpensive and shielded replacement cables such as those made by Belkin, as opposed to the expensive and non-shielded proprietary Roland 24 pin cables. What this means though, is that if you plan to ALSO use this system with a viintage 24 pin guitar controller like a G-505 or G-202 etc...., you will either need to make a 24 pin to DB25 pin cable (Wayne can make you one....) or, you can modify and upgrade the controller itself to a DB25 pin output and solve your Roland cable issues forever.

The GR-300 unit was tested by Wayne Joness in January 2013. Here is what Wayne had to say:

'Hello Keith!

So...I am happy to report your GR-300 passed all the tests with flying colors.

I have removed the bottom panel, and I can tell you that your unit is a "version C" meaning the final revision of the circuit board. This is a good thing.

http://www.joness.com/gr300/GR-300.htm#version

I checked the power supply, and your unit does have the problematic blue tantalum capacitors in place:

http://www.joness.com/gr300/GR-300.htm#repairs

I did not mention this originally when you asked about sending me your unit, but I would like to propose that I replace the blue tantalum capacitors with modern electrolytic capacitors as outlined on the website. This will protect your GR-300 from future failures.'

I agreed to the capacitor upgrade of course! So the future owner has a fully bench tested AND upgraded/protected GR-300 to boot!"

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