Members sacredgroove Posted March 26, 2008 Members Share Posted March 26, 2008 These may seem like dumb questions, but does anyone use a GCX to switch pedals in/out? In a previous thread of mine, I posted that I found the problem I have, but I still haven't found a fix to using pedals in my GCX. The manual says it works at instrument and line level. But my pedals sound like crap. Does anyone use a line leveler, like the Ebtech? Thanks! Link to comment Share on other sites More sharing options...
Members JMPMarshall Posted March 27, 2008 Members Share Posted March 27, 2008 Where are you running your pedals in the chain? If you're running them at line level that's likely your problem. If the pedals are the first thing in the GCX bypass the buffer and see if it makes any difference. The buffer causes problems with some effects (mostly vintage fuzz pedals) but I've also seen it with newer effects. Link to comment Share on other sites More sharing options...
Members jimosity Posted March 28, 2008 Members Share Posted March 28, 2008 +1 on bypassing the buffer.I use two Axess Electronics GRX4's that have the BS-2 buffer circuitry in them and with the buffers turned on, I was experiencing some crappy tones when putting pedals in...also I use a Boss Gl100 for spanky clean tones and was noticing a lot of breakup in the tone that went away when I took the buffer out of the circuit, so while the buffer does sound better SOMETIMES, it creates other problems as well.I know I fought with my cleans clipping too easily and it was because the buffers were pumping my signal too much (I use EMGs, so I guess they don't need to be buffered quite as much as passives...) Link to comment Share on other sites More sharing options...
Members sacredgroove Posted March 28, 2008 Author Members Share Posted March 28, 2008 I have 3 pedals and they're in loops 1-3. I found the buffer to be a problem as you guys mentioned, but the feedthru on the GCX has the same effect. The only fix I've found so far is to bypass both input/feedthru and go directly into loop 1, which is kinda cheesy. Link to comment Share on other sites More sharing options...
Members jimosity Posted March 28, 2008 Members Share Posted March 28, 2008 I've used GCX's in the past and while they are good for some stuff, the Axess Electronics stuff is just better...and requires less cables! Link to comment Share on other sites More sharing options...
Members sacredgroove Posted April 6, 2008 Author Members Share Posted April 6, 2008 Problem Solved!!!! I just jammed for about 2 1/2 hours!!! In case anybody is curious and use a GCX, check out the 8 prong buffer opamp inside. I had an old one and upgraded to the what DMC/VoodooLab uses now and it works perfectly. If you have: TLE2071--change to OPA134 TLE2072--change to OPA2134 They're easy to change because they're in a socket, not soldered. Cost is under $10. from mouser.com. Link to comment Share on other sites More sharing options...
Members Zachman Posted April 6, 2008 Members Share Posted April 6, 2008 Problem Solved!!!! I just jammed for about 2 1/2 hours!!! In case anybody is curious and use a GCX, check out the 8 prong buffer opamp inside. I had an old one and upgraded to the what DMC/VoodooLab uses now and it's works perfectly now. If you have: TLE2071--change to OPA134 TLE2072--change to OPA2134 They're easy to change because they're in a socket, not soldered. Cost is under $10. from mouser.com. Link to comment Share on other sites More sharing options...
Members Jaymeister Posted April 12, 2008 Members Share Posted April 12, 2008 Cool, you fixed it. I have an old GCX, and had to install the socket first before upgrading the opamp. Link to comment Share on other sites More sharing options...
Members sacredgroove Posted April 14, 2008 Author Members Share Posted April 14, 2008 Cool, you fixed it. I have an old GCX, and had to install the socket first before upgrading the opamp. Ouch. I installed a socket on my TS9 to swap 808 chips. It sucked, removing the old chip. Sockets are the way to go, though. Did you have the same problem I had? Did my thread actually help somebody else?...LOL. Link to comment Share on other sites More sharing options...
Members Jaymeister Posted April 14, 2008 Members Share Posted April 14, 2008 The buffer was not really useable until I upgraded the chip. It's a huge improvement Link to comment Share on other sites More sharing options...
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