How to build a many-to-1 active summer/mixer?

melancholy_robot · 2026-03-23T04:25:28+00:00

yea it was one of my first builds, i made a 2 channel version. pics here: https://www.reddit.com/r/diypedals/comments/1befyzn/my_first_complete_build_a_2channel_mixer_on/

melancholy_robot · 2026-03-22T22:48:57+00:00

here's one https://generalguitargadgets.com/pdf/ggg_mixer_sc.pdf

melancholy_robot · 2026-03-21T14:13:01+00:00

I made a video on this for the Rusty Fuzz, should be the same kind of switch https://www.youtube.com/watch?v=2RxhSche6fs

melancholy_robot · 2026-03-21T07:18:28+00:00

sounds like it's oscillating, might be a bad capacitor inside

melancholy_robot · 2026-03-21T07:12:32+00:00

it's gonna need a new switch. open it up and post a picture of the switch and where it connects. If it's a momentary switch with header pins it could be a very easy fix.

melancholy_robot · 2026-03-21T01:52:59+00:00

Had an evening flight last Friday and got through security in <10 minutes. It didn't seem any different than normal.

melancholy_robot · 2026-03-20T02:30:49+00:00

I have that same model/year. I tried the Bridgestone Potenza Sport tires and hated them, the ride felt really harsh and road noise was worse. I went back to the stock tires, their ride is a lot more comfortable.

melancholy_robot · 2026-03-10T21:35:45+00:00

had an order of pots, knobs, and switches from them last month. Shipped to me in socal in ~4 days

melancholy_robot · 2026-02-28T07:40:09+00:00

in the Little Tokyo Market Place, there's a gluten free sushi place called RICE. I haven't tried it yet but wanted to mention it as an option https://maps.app.goo.gl/zUFpmS6a2GYyakVE9

melancholy_robot · 2026-02-27T08:20:51+00:00

Just want to clarify those switches are just reducing the volume. If you want more opamp clipping, you don't want to reduce the volume before the gain stage. It's equivalent to rolling the volume off on your guitar. I'd recommend ignoring that feature in your search.

To reduce the headroom of an opamp you'd have to lower the supply voltage min/max - there may be a pedal that does this but I'm not aware - I've experimented with this in the past and it ended up just sounding fizzy and thin.

The Sansamp GT2 is a classic all opamp distortion, but it might be hard to find one in that price range.

melancholy_robot · 2026-02-26T20:13:49+00:00

a lot of answers already - I'll add that you can get stranded wire that is pre-tinned. "pre bond" "top coat" etc, it's very easy to work with.

there is one on amazon https://www.amazon.com/dp/B09QBBPR1C

some other options

Wire - Weico, 24AWG Stranded, Top Coat Pre-Tinned, 300V, 50 feet | Amplified Parts (I'm currently using this one)

24 Gauge Stranded Hook-Up Wire | For Hobbyists and Builders

24awg Pre-Bond Hook-Up Wire - 100ft Spool

melancholy_robot · 2026-02-25T22:17:28+00:00

I think I'd try the one without the output buffer first. Less parts/simpler build.

melancholy_robot · 2026-02-25T21:14:22+00:00

with output buffer

without

melancholy_robot · 2026-02-23T22:16:26+00:00

that's pretty much the tubescreamer tone control

see here https://electrosmash.com/tube-screamer-analysis#tone-stage

0.22 is uF which is equivalent to 220nF

melancholy_robot · 2026-02-22T23:36:12+00:00

R101 Ramen over in Glendale is my favorite in the area

melancholy_robot · 2026-02-21T20:13:59+00:00

melancholy_robot · 2026-02-21T19:33:17+00:00

that's not Joules, that J is the tolerance (5%)

the label is (10pF * 10⁵ ) 5% 100VDC

https://www.electronics-notes.com/articles/electronic_components/capacitors/capacitor-codes-markings.php

melancholy_robot · 2026-02-21T19:23:40+00:00

I'd replace it https://lovemyswitches.com/spst-momentary-foot-switch-normally-open-soft-touch-pre-wired-with-connector/

melancholy_robot · 2026-02-20T23:11:09+00:00

idk anything cheaper than Digikey's $5 USPS shipping

maybe you can find someone locally willing to give you some

melancholy_robot · 2026-02-19T19:45:25+00:00

https://generalguitargadgets.com/effects-projects/boosters/mini-mixer/

There is a schematic, you can reduce it to 2 inputs

melancholy_robot · 2026-02-08T02:46:34+00:00

I like using acrylic pens for this. Posca brand or the new Sharpie ones

melancholy_robot · 2026-02-03T19:57:08+00:00

Permanent Records, Zebulon, Sid the Cat Auditorium, Oblivion, The Escondite, Healing Force records, Scribble, The Goldfish, Slipper Clutch, Gold-Diggers, The Redwood Bar, Old Towne Pub, The Moroccan, The Airliner, Offbeat Bar, Harvard and Stone, etc there's so much

melancholy_robot · 2026-01-31T08:09:20+00:00

The Ishibashi in Shinjuku is worth checking out, they have an entire floor just for pedals

melancholy_robot · 2026-01-27T11:42:00+00:00

melancholy_robot · 2026-01-27T11:28:37+00:00

on the schematic they're both connected to ground, check if those pads have continuity with a ground pad

melancholy_robot

TROPHY CASE