Akashic Guitar effects circuit lookup
MIXSHAPESPEEDTONET DEPTHV DEPTH

Enclosure not stated · 6 knobs

Scientific Guitarist

CheckMate VibrotremSynchronized Vibrato and Tremolo

Category
Tremolo
Controls
Mix · Shape · Speed · Tone · T Depth · V Depth
Price
see vendor

From the vendor

I've had a hankering to try a tempo-synchronized tremolo and vibrato for some time. Together, the two effects can create some fun textures, and having the LFO's synchronized allows for some mild rotary-esque sounds, though this is not a rotary emulator. I wanted to make one that was easily DIY-able, but the vibrato can be a bit of a challenge. I decided to use the ES56033 and modulate its delay time due to its short minimum delay time of about 14 ms (half the PT2399). It's a little weird, but it sounds pretty cool.

Schematic

The schematic is in the vendor's build document, page 1. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 66 rows

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RefValueNormalizedTypeNotes
Resistors 28
R11M1M
R3100k100k
R410k10k
R510k10k
R6100k100k
R71k81.8k
R8220k220k
R9220k220k
R10220k220k
R1110k10k
R1210k10k
R1310k10k
R1410k10k
R161k1k
R1710k10k
R182k22.2k
R194k74.7k
R201k1k
R211k1k
R2222k22k
R24470R470
R26100k100k
R27120R120
R2847R47
R29220k220k
R304k74.7k
R3110k10k
R32820R820
Capacitors 21
C1100n100n
C2100u100u
C3100p100p
C447u47u
C547u47u
C6220p220p
C7100n100n
C8100u100u
C9100n100n
C10100n100n
C114n74.7n
C124n74.7n
C13100n100n
C14100n100n
C1610n10n
C1710n10n
C191u1u
C201u1u
C2110u10u
C221u1u
C254u74.7u
Diodes 1
D1DO41DO41
Transistors 1
Q12N50882N5088
ICs 4
IC1TLC2272TLC2272
IC2LM78L05LM78L05
IC3ES56033ES56033
IC4LM4558NLM4558N
Opto 1
LDR1LDR1LDR1
Potentiometers 6
MIXB50kB50k
SHAPEB500kB500k
SPEEDB100kB100k
TONEB10kB10k
T_DEPTHB1kB1k
V_DEPTHA1kA1k
LEDs 4
D2LEDLED
D3LEDLED
D4LEDLED
R2RLEDRLED