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Post by SonoftheBlues on May 19, 2018 12:33:29 GMT -7
Hi all,
I’m using the short patch cable > Buffer > cable to pedal board trick to have a useable FX loop. Problem is, I already have three buffers broken down on me. Two homemade and a t1m. I’m very careful with my gear but also gigging a lot so everything has a hard time. Are buffers known to break easy or is this just a case of bad luck? I really dislike worrying about my gear when on the road. I need a reliable solution or worse case, another amp which would make me pretty sad. Thanks for reading
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Post by DeanG on May 20, 2018 2:05:02 GMT -7
The central component in a buffer is the Op Amp.
If one runs the buffer at 18VDC you are on the supply rail MAX edge (example JRC4559). These pedals are very basic and do not have over voltage regulation built in.
This where I have experienced a failure, when operating at 18VDC.
Other than a bad Op Amp component Another common failure point can be mechanical, footswitch or 1/4 inch Jack.
If the footswitch or Jack test good, you can pick up a replacement Op Amp on eBay under $10.
I had a Cmatmods Signa Drive (earlier version) where the silkscreen indicated 18V operation capable. Not long after switching to 18VDC the Op Amp went defective. The current production of Signa Drive no longer has 18VDC on the faceplate silkscreen. I wrote Chad why for the change, no reply.
Using the same power supply, my SH RC Booster works great at 18VDC. Although not documented to operate at 18VDC. I did confirm with Xotic the 18V capability.
YMMV
May be a more robust FX buffer may be in order, design specifically for the FX position. Empress Effects or Mesa.
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Post by zpilot on May 20, 2018 7:17:23 GMT -7
I've had an Analogman buffer in regular use on 18 volts with no problems. Analogman stuff is as robust as it gets. I used a Carl Martin Buff Deluxe before that on 18 volts with no failure.
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Post by SonoftheBlues on May 20, 2018 12:23:15 GMT -7
Thanks a lot for your answers guys. As I wrote, I use a T1M this1smyne.com/shop/mb-mini-buffer/It's small and easy to attach on the back of the amp. The T1M operates at 9v. The other buffers I used as well. Might that be the problem? I've just did some more troubleshooting by placing the buffer in front of the amp. So: Guitar > cable > buffer > cable > amp I have to completely crank the amp to hear the guitar just a little bit. When I remove the power supply it all sounds good but the buffer won’t work as it isn’t powered. I think one is toasted. Might that be the problem? I've just did some more troubleshooting by placing the buffer in front of the amp. So: Guitar > cable > buffer > cable > amp I have to completely crank the amp to hear the guitar just a little bit. When I remove the power supply it all sounds good but the buffer won’t work as it isn’t powered. I think one is toasted.
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