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PROJECT NAME
THESEUS
BASED ON
Analogman King of Tone
EFFECT TYPE
Dual-channel overdrive
PROJECT SUMMARY
One of the earliest boutique "waitlist" pedals, this dual-channel drive is made up of two modified Mar-
shall Bluesbreaker circuits in series.
Actual size is 4.4" x 1.52" (main board) and 4.00" x 0.74" (bypass board).
THESEUS DUAL OVERDRIVE
BUILD DIFFICULTY
Intermediate
DOCUMENT VERSION
1.0.1 (2022-05-13)
1
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Summary of Contents for aion theseus
- Page 1 PROJECT SUMMARY One of the earliest boutique “waitlist” pedals, this dual-channel drive is made up of two modified Mar- shall Bluesbreaker circuits in series. Actual size is 4.4” x 1.52” (main board) and 4.00” x 0.74” (bypass board). THESEUS DUAL OVERDRIVE...
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Page 2: Table Of Contents
Otherwise, the Theseus is a direct clone of the King of Tone, but with one added convenience: a send/ return loop between the channels. This allows the two pedals to be split up so you can have more flexibility in where they are used on the pedalboard, or put something in between them such as a boost or EQ for added tone shaping. -
Page 3: Parts List
LED current-limiting resistor (Ch. B) which affects LED brightness. RPD1 Metal film resistor, 1/4W Channel A input pulldown resistor. Can be anywhere from 1M to 2.2M. RPD2 Metal film resistor, 1/4W Channel B input pulldown resistor. Can be anywhere from 1M to 2.2M. THESEUS DUAL OVERDRIVE... - Page 4 BAS33 Switching diode, DO-35 Original uses MA856 diodes. The BAS33 is the closest available diode currently in production. See build notes. BAS33 Switching diode, DO-35 BAS33 Switching diode, DO-35 1N914 Fast-switching diode, DO-35 1N914 Fast-switching diode, DO-35 THESEUS DUAL OVERDRIVE...
- Page 5 1/4" phone jack, stereo, switched RETURN NMJ6HC-S 1/4" phone jack, stereo, switched 2.1mm DC jack, 2.1mm panel mount Mouser 163-4302-E or equivalent. CH. A 3PDT Stomp switch, 3PDT CH. B 3PDT Stomp switch, 3PDT 1590BBS Enclosure, die-cast aluminum THESEUS DUAL OVERDRIVE...
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Page 6: Build Notes
1590BB2, but we have not tested it, so you’re on your own! Another alternative is the 1590C (also available from Tayda and Love My Switches). It’s about 10mm taller than necessary, but if that’s all you can find then it will definitely work. THESEUS DUAL OVERDRIVE... -
Page 7: Schematic
BYP_GND SW_1B DRIVE_A 100kB 100k 100pF 220k SW_1A 100n TL072P IC1B CH.A IN IC1A TL072P CH.A OUT SW_1E DRIVE_B 100kB 100k 100pF GND2 220k SW_1F 100n TL072P IC2A CH.B IN IC2B TL072P GND2 CH.B OUT GND2 GND2 THESEUS DUAL OVERDRIVE... -
Page 8: Drill Template
TONE (A) CENTER (0,0) x: -1.725, y: -0.01 x: +1.725, y: -0.01 ø9/32” ø9/32” x: -1.60, y: -1.36 x: -0.825, y: -1.36 x: +0.825, y: -1.36 x: +1.60, y: -1.36 ø15/32” ø5/16” ø5/16” ø15/32” CHANNEL B CHANNEL A THESEUS DUAL OVERDRIVE... -
Page 9: Enclosure Layout
ENCLOSURE LAYOUT Enclosure is shown without jacks. See next page for jack layout and wiring. 1590BBS THESEUS DUAL OVERDRIVE... -
Page 10: Wiring Diagram
This is the default wiring diagram with the send/return loop. If you want to omit this loop, see the modified wiring diagram on the next page. LOOP LOOP INPUT SEND RETURN OUTPUT CH.A CH.A JACK SND RET +V JACK CH.B GND CH.B 1590BBS THESEUS DUAL OVERDRIVE... -
Page 11: Wiring Diagram (No Send/Return Loop)
If you want to omit the send & return jacks, use the following wiring diagram. Note the jumper between the SND and RET pads on the footswitch PCB. INPUT OUTPUT CH.A CH.A JACK SND RET +V JACK CH.B GND CH.B 1590BBS THESEUS DUAL OVERDRIVE... - Page 12 (In other words: you don’t have to go out of your way to advertise the fact that you use these PCBs, but please don’t go out of your way to hide it. The guitar effects industry needs more transparency, not less!) DOCUMENT REVISIONS 1.0.1 (2022-05-13) Added note about the 1590BBS enclosure size. 1.0.0 (2022-04-08) Initial release. THESEUS DUAL OVERDRIVE...
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