Name:    Steve Kennedy
Email:   steve@pacair.com  
Subject: RD Footswitch
Thread:  267
Time:    Sun, 18 Nov 2001 06:30:29 UTC

I looked at the RD-50 schematic and it would be possible to link two amps to one footswitch, but it would require modifications.


The main modification for using a single footswitch is the addition of two isolation diodes so that the amps do not see each other but both would respond to the same footswitch. These could be external to the amp in a custom footswitch harness, inside a modified footswitch or inside the amps themselves.


I would be fairly simple to modify a standard dual footswitch to work with the RD-50. Even though there are some small differences between the wiring of an RD-50 footswitch and those used in the other RD amplifiers, they appear to do the same electrical job so almost any RD footswitch will work with any other model in that series.


The simpler (no LED) footswitches that come with all the other models could also be modified with just a couple of parts.


If you aren't picky about finding an original MM footswitch, the $14.95 dual footswitch with LEDs from MCM Electronics (part number 555-3107) could be modified to work. It is of all steel construction and is heavier than the original (also a little larger).


Steve


Steve