Akashic Guitar effects circuit lookup
GAINPEAK

Enclosure not stated · 2 knobs

Experimentalists Anonymous

Mu-tron III

Based on the Mu-Tron III· 3 other boards clone it

Category
Other· Filters Wahs and VCFs
Controls
Gain · Peak
Price
see vendor
Tags
Filters Wahs and VCFs
Open the schematic at Experimentalists Anonymous

Schematic

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Parts list 47 rows

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Check before you build · 5 values the reader of this schematic was not sure of
  • R2: subscript faint, could be R1
  • R5: drawn 1.7k, could be 4.7k
  • R9: subscript could be R6
  • C9: printed as C8 twice
  • Bypass/Sweep: switch type and labels hard to read
RefValueNormalizedTypeNotes
Resistors 21
R23.3k3.3kdesignator subscript faint, could be R1; read from the schematic by eye
R3120k120kread from the schematic by eye
R4120k120kread from the schematic by eye
R51.7k1.7kdrawn 1.7k; could be a 4.7k; read from the schematic by eye
R722k22kread from the schematic by eye
R822k22kread from the schematic by eye
R912k12kdesignator subscript faint, could be R6; read from the schematic by eye
R10220k220kread from the schematic by eye
R12220k220kread from the schematic by eye
R1322k22kread from the schematic by eye
R1412k12kread from the schematic by eye
R151Meg1Mread from the schematic by eye
R161Meg1Mread from the schematic by eye
R17330330drawn 330 ohm; read from the schematic by eye
R1847k47kread from the schematic by eye
R19180k180kread from the schematic by eye
R20120k120kread from the schematic by eye
R21120k120kread from the schematic by eye
R22120k120kread from the schematic by eye
R23??value depends on characteristics of the 0805 opto, per drawing; read from the schematic by eye
R25560560drawn 560 ohm; read from the schematic by eye
Capacitors 14
C14.7uF4.7upolarized; read from the schematic by eye
C20.1uF100nread from the schematic by eye
C310pF10pread from the schematic by eye
C42200pF2.2nRange switch; read from the schematic by eye
C51800pF1.8nread from the schematic by eye
C62200pF2.2nRange switch; read from the schematic by eye
C71800pF1.8nread from the schematic by eye
C82.2uF2.2upolarized, on Drive switch; read from the schematic by eye
C94.7uF4.7uprinted as a second C8 on the drawing (designator clash); polarized, envelope filter cap; read from the schematic by eye
C1015uF15unon-polar; read from the schematic by eye
C110.01uF10nsupply bypass; read from the schematic by eye
C120.01uF10nsupply bypass; read from the schematic by eye
C130.01uF10nsupply bypass; read from the schematic by eye
C140.01uF10nsupply bypass; read from the schematic by eye
Diodes 2
D11N9141N914read from the schematic by eye
D21N9141N914read from the schematic by eye
ICs 3
A1-A245584558dual op amp; drawing: A1-A2, A3-A4, A5-A6 = 0802 = type 4558; read from the schematic by eye
A3-A445584558dual op amp; read from the schematic by eye
A5-A645584558dual op amp; read from the schematic by eye
Opto 1
0805??Musitronics part 0805: lamp/LED + photocell opto (red dot marks one lead); read from the schematic by eye
Potentiometers 2
GainA1MA1MPotentiometerpart 0101, drawn '1M CCW log'; read from the schematic by eye
PeakA150KA150kPotentiometerpart 0102, drawn '150k CW log'; read from the schematic by eye
Switches 4
RangeDPDTDPDTpart 0504, High/Low; read from the schematic by eye
ModeSP3TSP3Tpart 0502, HP/BP/LP; read from the schematic by eye
DriveDPDTDPDTpart 0503, Up/Down; read from the schematic by eye
Bypass/SweepDPSTDPSTpart 0501, two-section on/off switch in the battery leads, labelled 'Bypass' and 'Sweep'; reading uncertain; read from the schematic by eye

Other boards based on the Mu-Tron III