Members kenact Posted July 5, 2009 Members Share Posted July 5, 2009 I know Roland makes a GKP-4 to plug 1 midi guitar into up to 4 synths, but does anyone know of a stomp box that will let me plug 2 or more guitars into 1 synth? I have an LGXT and I'm thinking of adding a GK-3 pup to my Dano Baritone. I'd like to plug them both into my GR-20 and play them one at a time, without having to turn off and disconnect everything. Link to comment Share on other sites More sharing options...
Members Anderton Posted July 5, 2009 Members Share Posted July 5, 2009 I don't know of any footswitch, but a MIDI Merger box (as made by MIDI Solutions, try Google) would let you plug in both guitars and send the combined data to the synth. Whichever guitar you played would be the one to which the synth would respond. Link to comment Share on other sites More sharing options...
Members kenact Posted July 6, 2009 Author Members Share Posted July 6, 2009 Sorry I wasn't clear, I'm looking to take the output from two 13 pin GK pups into a single GR-20. Technically it isn't midi yet. Thanks for the reply, if your the same Craig Anderton who authored of Electronic Projects for Musicians, amoung others, I've been reading your stuff for years. Link to comment Share on other sites More sharing options...
Members Anderton Posted July 6, 2009 Members Share Posted July 6, 2009 Sorry I wasn't clear, I'm looking to take the output from two 13 pin GK pups into a single GR-20. Technically it isn't midi yet. Thanks for the reply, if your the same Craig Anderton who authored of Electronic Projects for Musicians, amoung others, I've been reading your stuff for years. If the projects worked, then I'm the same Craig Anderton. If they didn't, I'm not so go blame that "other guy"! Link to comment Share on other sites More sharing options...
Members Anderton Posted July 6, 2009 Members Share Posted July 6, 2009 As to 13-pin switchers...sorry, don't know of any. Anyone? Link to comment Share on other sites More sharing options...
Members germanicus2112 Posted July 6, 2009 Members Share Posted July 6, 2009 Could you possibly use a roland us-20? It performs the inverse function, ie it allows you to use one guitar to drive two 13 pin units simultaneously.It has one 13 pin input, and 2 13 pin outputs, allowing you to send your signal out of either 13 pin output, or both. Maybe its possible to simply reverse the path? Link to comment Share on other sites More sharing options...
Members Nik Posted July 6, 2009 Members Share Posted July 6, 2009 I was under the imprression that the Roalnd US-20 can work in either direction - but I may be wrong. Link to comment Share on other sites More sharing options...
Members kenact Posted July 6, 2009 Author Members Share Posted July 6, 2009 If the projects worked, then I'm the same Craig Anderton. If they didn't, I'm not so go blame that "other guy"! If I'm not mistaken, didn't you write for an electronics mag in the 70's? I remember building a phase shifter from one of them and combining a fuzz in the same box, but I replaced the 9v with an internal power supply. It was pretty cool and looked kind of funky. I fitted it into an old 6x4x3 transistor radio housing. I used it for several years. Nice to finally "meet" you. Link to comment Share on other sites More sharing options...
Members kenact Posted July 6, 2009 Author Members Share Posted July 6, 2009 I was under the imprression that the Roalnd US-20 can work in either direction - but I may be wrong. Thanks, I'll ask around some more before I actually go out and buy one. Just curious, that unit has an A/B switch and a Both switch, I wonder what would happen if you selected Both? Could it go BOOM Link to comment Share on other sites More sharing options...
Members NyteOwl Posted July 8, 2009 Members Share Posted July 8, 2009 I seriously doubt it. Since the GR-20 processes guitar chords with ease, hitting the Both switch would merely cause it to process a few more notes. The key point is, you don't intend to play both guitars at the same time, so should you accidentally hit the both switch, you'd still be getting synth input from a single guitar, not two. Don't know about you, but I always back my guitar and synth volume controls down to zero when I put the guitar in a stand, so if you do that, you won't evn get a signal from the "idle" guitar if you accidentally hit the both switch. Link to comment Share on other sites More sharing options...
Members kenact Posted July 9, 2009 Author Members Share Posted July 9, 2009 I seriously doubt it. Since the GR-20 processes guitar chords with ease, hitting the Both switch would merely cause it to process a few more notes. The key point is, you don't intend to play both guitars at the same time, so should you accidentally hit the both switch, you'd still be getting synth input from a single guitar, not two. Don't know about you, but I always back my guitar and synth volume controls down to zero when I put the guitar in a stand, so if you do that, you won't evn get a signal from the "idle" guitar if you accidentally hit the both switch. Thanks Jack. I was just being SILLY Link to comment Share on other sites More sharing options...
Members cincy_cosmo Posted July 10, 2009 Members Share Posted July 10, 2009 IF the US-20 can be used backwards, if BOTH is used, then the net result will be poor tracking as the unused guitar will pick up noise that will confuse the tracking. Remember the idea of the GK-2/3 is to divide the signal of each string. If a 'logical' sting combines input from two guitars, ie, two pitches, the tracking will not work. I am not the authority, but I remember seeing some diagrams of home made US-20s a long time ago and I think they had a rectifier in the circuit. That would mean it only works one direction. I could be totally wrong, but, if you buy one, make sure you understand the return policy of your store. Link to comment Share on other sites More sharing options...
Members AXEL276 Posted July 22, 2009 Members Share Posted July 22, 2009 With the GR-20, you have to set the sensitivity for each different midi guitar. When I had my GR-20 I would have to do this each time I switched from my Godin XTAS and strat with GK-2A pickup. I have since sold the GR-20 and bought a GR-33 which allows you to store multi guitar sensitivity settings. So even if you could hook 2 midi guitars into one GR-20 your still going to have tracking/sensitivity problems. Link to comment Share on other sites More sharing options...
Members kenact Posted April 2, 2010 Author Members Share Posted April 2, 2010 Time to revisit this thread. I'm still looking for a device or DIY schematic to allow 2 GK equiped guitars to plug into a single synth. I was under the imprression that the Roalnd US-20 can work in either direction - but I may be wrong. I was looking at a schematic of the US-20 and it will absolutely NOT work for this purpose. For one thing it appears the guitar single goes from the input to a 1/4 inch phone jack with no connection to the guitar signal on the output jacks. The ic's MAY also be directional. The schematic I found is here:http://www.muc.de/~hm/music/us-20/US-20-v1-schem.png Link to comment Share on other sites More sharing options...
Members Nik Posted April 2, 2010 Members Share Posted April 2, 2010 Hmmm....Certainly, definitely, 100% will NOT work in reverse. Sorry! Link to comment Share on other sites More sharing options...
Members elantric Posted April 2, 2010 Members Share Posted April 2, 2010 Find a friend in Europe and order this: Klaus Schock SW41 "Change over switch to connect up to 4 GK-instruments to one GK-synthesizer (for example 4 guitars into one GR33)" http://www.klausschock.com/Products/products.html English translation: http://translate.google.com/translate?js=y&prev=_t&hl=en&ie=UTF-8&layout=1&eotf=1&u=http%3A%2F%2Fwww.klausschock.com%2FProducts%2Fproducts.html&sl=de&tl=en "German Sales: Klaus shock, Elly-Heuss-Knapp-Str. 27, 72074 T Link to comment Share on other sites More sharing options...
Members kenact Posted April 4, 2010 Author Members Share Posted April 4, 2010 Find a friend in Europe and order this: Klaus Schock SW41 Thanks, I just heard about this from another message board. Link to comment Share on other sites More sharing options...
Members kenact Posted April 4, 2010 Author Members Share Posted April 4, 2010 Hmmm.... Certainly, definitely, 100% will NOT work in reverse. Sorry! A for effort Nik. Link to comment Share on other sites More sharing options...
Members aliensporebomb Posted April 4, 2010 Members Share Posted April 4, 2010 Elantric posted the device you want. Looks very nice too. Link to comment Share on other sites More sharing options...
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