Solid State Guitar Amp Forum | DIY Guitar Amplifiers
Solid State Amplifiers => The Newcomer's Forum => Topic started by: soundroi on April 19, 2012, 11:04:44 AM
Hello again!
My question this time is about the Randall RG100ES / HT footswitch.
I need to control the channel switch of this head (it uses the 6-pin connector) with my Behringer FCB1010 floor controller (wich uses standard mono jacks for switching). Is this possible?
I mean, I need to make a cable that goes from the 6-pin > to two 6.3 jacks. Is this possible, and how do I make this cable? I have the original Randall fotswitch schematics but I don't understand it.
I have a Randall FS5 footswitch so I can use this 6-pin connector (which seems impossible to find here in Europe).
Thank you very much.
Roi.
The Randall footswitch uses a DPDT footswitch, meaning 2 3 leg switches working together.
One of them does the actual switching, by grounding either of the channels.
Without the fsw, both work a the same time because nobody is grounding any of them.
So you need to wire a spdt relay so its contacts short either channel, copying what the original fsw does.
I don't know whether your controller can directly drive the relay coil.
I think not.
I think that in your situation the best solution would be to DIY a fsw similar to the original, meaning use a spdt footswitch (easy to get) , balanced mic cable (which has 2 hot wires and 1 ground mesh) and a suitable 6 pin connector , although you will wire only 3: ground and both channel muting ones.
Thank you so much! :tu:
Well, in fact I don't want the "Both Channels" option active... so I guess I could make a 1 jack cable just for switching channels... am I right?
How can I make this?
Roi.
Post a clean readable copy of the preamp schematic, so we all refer to the same.