Print Page - Looper True Bypass, not so easy like it seems

Title: Looper True Bypass, not so easy like it seems
Post by: JackSkellington on May 25, 2018, 07:33:02 AM

Hi, I'm looking some layout of the some DIY True Bypass Looper, one loope effects.
This is the basic schematic:
(https://i.imgur.com/XtZGp1z.png)

I found the Keeley one's gutshot:
(https://i.imgur.com/usm2VnT.jpg)
It' includes a pair of extra resistors. ???
I'd say those resistors are between tip and sleeve of the jacks Send & Return. Pull Down Resistors, just in case we need of them?
Confirm, please?

And then I found some kits that includes a pair of caps (looking at the size I'd say 100nF). I can't imagine the purpose. :(
https://www.dhresource.com/0x0s/f2-albu-g3-M01-3D-B0-rBVaHVWWJNKAcD4PAALdQsq2u7E062.jpg/diy-true-bypass-looper-effect-pedal-guitar.jpg
https://www.dhresource.com/0x0s/f2-albu-g2-M01-A6-C8-rBVaG1WWJQiAd1jqAAK2s6DfiCs398.jpg/diy-true-bypass-looper-effect-pedal-guitar.jpg
https://ae01.alicdn.com/kf/HTB1xhUOHVXXXXbdXXXXq6xXFXXX3/Looper-DIY-Guitar-Pedal-footswitch-true-bypass-Aluminum-Pedals-RED-Box-Foot-Pedal-Switch-handmade-kit.jpg_640x640.jpg

Help, please.

Thank you! ;)

Title: Re: Looper True Bypass, not so easy like it seems
Post by: sonnyboy27 on May 25, 2018, 01:27:01 PM

I've built multiple true bypass loopers based on the diagram you have there and they've all worked out great. The added resistors and such on the keeley aren't necessary. You'll be fine with the plain diagram. If you have some switch pops you can go in and add those pulldown resistors if you need to but you probably won't.

Title: Re: Looper True Bypass, not so easy like it seems
Post by: JackSkellington on May 25, 2018, 08:18:05 PM

Thanks. :)
Actually, I already built a ABY looper, and with my DIY pedals it works fine.
I still want to know something more about those caps. I am just curious. ;)

Title: Re: Looper True Bypass, not so easy like it seems
Post by: jkokura on May 25, 2018, 09:34:46 PM

Quote from: JackSkellington on May 25, 2018, 08:18:05 PM
Thanks. :)
Actually, I already built a ABY looper, and with my DIY pedals it works fine.
I still want to know something more about those caps. I am just curious. ;)

Since it's just a picture, and there's no schematic or build document, it's very hard to say. If the caps are there between the input and ground, that's much different than being inline with the circuit.

In any case, they're unnecessary.

Jacob

Title: Re: Looper True Bypass, not so easy like it seems
Post by: somnif on May 25, 2018, 09:43:10 PM

Digging around on aliexpress's comments, apparently the caps aren't on the schematic included with purchase.

Title: Re: Looper True Bypass, not so easy like it seems
Post by: gordo on May 25, 2018, 11:48:07 PM

Keeley did that? Spectacular wiring!!!

Title: Re: Looper True Bypass, not so easy like it seems
Post by: JackSkellington on May 26, 2018, 07:25:17 AM

Yeah, cool wiring! 8)

Anyway, about those caps... It will remain a mystery? :(

madbeanpedals::forum

Projects => General Questions => Topic started by: JackSkellington on May 25, 2018, 07:33:02 AM