A/B -testing pedals may be painful without a looper. On the other hand, it maybe useful to get some tone-sucking pedals off the line when they are not in use. If you have some two or more simultaneous effects in your solo sound, it’s almost a necessity. A simple looper is very easy to make, even so easy that I decided to add something more to it. As said before the need of buffer(s) in your signal path is more or less questionable. It has to be tested to know whether you need one or not. So I added a switchable buffer into box. I drew a schematic myself, which is as following:
In my case I have only two loops, because this is more like utility box for me. The loop can be of course prolonged according to your needs. It’s recommendable to add buffer in every case, especially if the amount of the loops is increased. Not necessarily it has to be switchable. I added the switch only for testing purposes. Now this one works like this:
Signal is going from input jack to DPDT -switch. Then it’s either going to the buffer circuit or bypasses it. The two 3PDT switches are loop on/off -switches. In case that the buffer is bypassed, and both the loops are switched off, the signal is going straight from jack to jack unaffected. Both the loops have signal leds. Buffer hasn’t as it’s nothing to switch on and off constantly. Buffer in my case is from Mad Professor Ruby Red -booster, but it can be whatever you like.
Let me mention that this was absolutely the last time I am even trying to get any kind of a looper in 1590B -enclosure. Took hours of tinkering with forceps and a bunch of beer. No, I’m talking about hellish state of a intoxication here.
Every children has to have a name, so this one is Blackout Circumference. Could be Blackout Asspain as well: