Akashic Guitar effects circuit lookup
LEVELCHORUS INTENSITYDEPTHRATE

Enclosure not stated · 4 knobs

Experimentalists Anonymous

Boss CE-1 (GIF)

Based on the Boss CE-1 (GIF)

Category
Vibrato / Chorus· Chorus
Controls
Level · Chorus Intensity · Depth · Rate
Price
see vendor
Tags
Chorus
Open the schematic at Experimentalists Anonymous

Schematic

The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.

Parts list 189 rows

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Check before you build · 14 values the reader of this schematic was not sure of
  • R19: 1.2K or 8.2K
  • R34: printed 33 or 53
  • R37: printed 17K, likely 47K
  • R74: small print, 100K best reading (1M possible)
  • R15: label reads R5
  • R63/R65/R88/R89: off-board and pin-24 labels could be R83/R85/R68/R69 etc.; numbers best guesses
  • C05/C08: IC-1 compensation cap labels hard to read
  • C9: label partly illegible
  • C25: printed C28
  • C42: .047 drawn with polarity mark
  • D06: label reads D05 or D06
  • D15: zener type 05Z18A or 05Z13A
  • VR01: 5KB or 6K8
  • S2 pole count
RefValueNormalizedTypeNotes
Resistors 89
R014.7K4.7kread from the schematic by eye
R021.5K1.5kread from the schematic by eye
R0356K56kread from the schematic by eye
R04100K100kread from the schematic by eye
R05680680read from the schematic by eye
R06330K330kread from the schematic by eye
R0710K10kread from the schematic by eye
R09100K100kIC-1 pin 5-7 resistor; read from the schematic by eye
R10470470+13V rail dropper; read from the schematic by eye
R11470K470kread from the schematic by eye
R1210K10kread from the schematic by eye
R1322K22kread from the schematic by eye
R1410K10kread from the schematic by eye
R1510K10klabel reads R5; read from the schematic by eye
R1610K10kread from the schematic by eye
R17470470-13V rail dropper; read from the schematic by eye
R1810K10kread from the schematic by eye
R191.2K1.2kread from the schematic by eye
R2010K10kread from the schematic by eye
R21100K100kread from the schematic by eye
R2210K10kread from the schematic by eye
R231K1kread from the schematic by eye
R24100K100kread from the schematic by eye
R25100K100kread from the schematic by eye
R266.8K6.8kread from the schematic by eye
R276.8K6.8kread from the schematic by eye
R2847K47kread from the schematic by eye
R2947K47kread from the schematic by eye
R302.2K2.2kread from the schematic by eye
R3133K33kread from the schematic by eye
R3233K33kread from the schematic by eye
R332.2K2.2kread from the schematic by eye
R343333read from the schematic by eye
R351K1kread from the schematic by eye
R36470470read from the schematic by eye
R3747K47kprinted value looks like 17K; read from the schematic by eye
R38100K100kread from the schematic by eye
R3947K47kread from the schematic by eye
R4010K10kread from the schematic by eye
R4122K22kread from the schematic by eye
R426.8K6.8kread from the schematic by eye
R4315K15kread from the schematic by eye
R4415K15kread from the schematic by eye
R452.2K2.2kread from the schematic by eye
R4610K10kread from the schematic by eye
R4712K12kread from the schematic by eye
R481.6K1.6kread from the schematic by eye
R492.2K2.2kread from the schematic by eye
R50100K100kread from the schematic by eye
R514.7K4.7kread from the schematic by eye
R523.3K3.3kread from the schematic by eye
R533.3K3.3kread from the schematic by eye
R544.7K4.7kread from the schematic by eye
R551M1Mread from the schematic by eye
R5610K10kread from the schematic by eye
R57100K100koff board, chorus intensity; read from the schematic by eye
R586.2K6.2kread from the schematic by eye
R591K1kread from the schematic by eye
R601M1Mread from the schematic by eye
R6110K10kread from the schematic by eye
R6210K10kread from the schematic by eye
R634.7K4.7koff board, depth; read from the schematic by eye
R643.9K3.9kread from the schematic by eye
R651.5K1.5koff board, chorus intensity; read from the schematic by eye
R6622K22kread from the schematic by eye
R674.7K4.7kread from the schematic by eye
R68330K330kread from the schematic by eye
R6910K10kread from the schematic by eye
R70100K100kread from the schematic by eye
R7110K10kread from the schematic by eye
R723.3K3.3kread from the schematic by eye
R73470K470kread from the schematic by eye
R74100K100kread from the schematic by eye
R7533K33kread from the schematic by eye
R7618K18kread from the schematic by eye
R772.2K2.2kread from the schematic by eye
R788.2K8.2kread from the schematic by eye
R794.7K4.7kread from the schematic by eye
R80180K180kalternate 120K; with uPC1458 the note says 180K, with CA1458G 120K or 180K; read from the schematic by eye
R81220K220kalternate 150K per IC-4 note; read from the schematic by eye
R82100K100koff board; read from the schematic by eye
R831.8K1.8kread from the schematic by eye
R8410K10kread from the schematic by eye
R851.8K1.8kread from the schematic by eye
R8610K10kread from the schematic by eye
R8815K15kread from the schematic by eye
R89220K220koff board, rate; read from the schematic by eye
R91470470output, mono; read from the schematic by eye
R92470470output, stereo; read from the schematic by eye
Capacitors 46
C01.001uF1nread from the schematic by eye
C021uF1uelectrolytic; read from the schematic by eye
C031uF1uelectrolytic; read from the schematic by eye
C0547pF47pIC-1 compensation; read from the schematic by eye
C06.0068uF6.8nread from the schematic by eye
C07.47uF470nnon-polar; read from the schematic by eye
C0815pF15pIC-1 compensation; read from the schematic by eye
C947uF47u16V electrolytic; label partly legible (C4?); read from the schematic by eye
C1047uF47u16V electrolytic; read from the schematic by eye
C11.001uF1nread from the schematic by eye
C12.0047uF4.7nread from the schematic by eye
C1310uF10u16V electrolytic; read from the schematic by eye
C14.1uF100nread from the schematic by eye
C1510uF10u16V electrolytic; read from the schematic by eye
C1610uF10u16V electrolytic; read from the schematic by eye
C17470uF470u16V electrolytic; read from the schematic by eye
C18250pF250pread from the schematic by eye
C19250pF250pread from the schematic by eye
C2047pF47pread from the schematic by eye
C2147pF47pread from the schematic by eye
C221uF1uelectrolytic; read from the schematic by eye
C23.033uF33nread from the schematic by eye
C25.0047uF4.7nlabel reads C28 (clash with C28 .001); read from the schematic by eye
C26.001uF1nread from the schematic by eye
C27470pF470pread from the schematic by eye
C29.001uF1nread from the schematic by eye
C30.47uF470nelectrolytic; read from the schematic by eye
C310.47uF470nnon-polar; read from the schematic by eye
C32.022uF22nread from the schematic by eye
C33.022uF22nread from the schematic by eye
C3410uF10u16V electrolytic; read from the schematic by eye
C354.7uF4.7uelectrolytic; read from the schematic by eye
C3647pF47pIC-3 compensation; read from the schematic by eye
C3715pF15pIC-3 compensation; read from the schematic by eye
C38.1uF100nread from the schematic by eye
C391uF1uelectrolytic; read from the schematic by eye
C40.1uF100nread from the schematic by eye
C41.033uF33nread from the schematic by eye
C42.047uF47ndrawn with a + sign; read from the schematic by eye
C43.082uF82nread from the schematic by eye
C44220uF220uelectrolytic; read from the schematic by eye
C45220uF220uelectrolytic; read from the schematic by eye
C46220uF220u35V electrolytic; read from the schematic by eye
C47220uF220u35V electrolytic; read from the schematic by eye
C48220uF220u16V electrolytic; read from the schematic by eye
C49220uF220u16V electrolytic; read from the schematic by eye
Diodes 23
D011S15551S1555per legend: all diodes 1S1555 unless noted; read from the schematic by eye
D021S15551S1555per legend; read from the schematic by eye
D031S15551S1555per legend; read from the schematic by eye
D041S15551S1555per legend; read from the schematic by eye
D051S15551S1555per legend; read from the schematic by eye
D061S15551S1555per legend; label near C23/R37 reads D05 or D06; read from the schematic by eye
D07??drawn as zener, no voltage given; read from the schematic by eye
D081S15551S1555per legend; read from the schematic by eye
D091S15551S1555per legend; read from the schematic by eye
D111S15551S1555per legend; read from the schematic by eye
D121S15551S1555per legend; read from the schematic by eye
D131S15551S1555per legend; read from the schematic by eye
×11S15551S1555per legend; power-supply bias diode above D14, its label also reads D13 (clash); read from the schematic by eye
D141S15551S1555per legend; read from the schematic by eye
D1505Z18A05Z18Azener in -13V regulator; label reads D16, clashing with the bridge; read from the schematic by eye
D161N40031N4003bridge rectifier D16-D19 1N4003 x4; read from the schematic by eye
D171N40031N4003read from the schematic by eye
D181N40031N4003read from the schematic by eye
D191N40031N4003read from the schematic by eye
D20??zener, output clamp, no voltage given; read from the schematic by eye
D21??zener, output clamp, no voltage given; read from the schematic by eye
D22??zener, output clamp, no voltage given; read from the schematic by eye
D23??zener, output clamp, no voltage given; read from the schematic by eye
Transistors 17
Q12SC9002SC900read from the schematic by eye
Q22SC9002SC900read from the schematic by eye
Q32SA4932SA493read from the schematic by eye
Q42SA4932SA493read from the schematic by eye
Q52SC536F2SC536Fread from the schematic by eye
Q62SC536F2SC536Fread from the schematic by eye
Q72SC9002SC900read from the schematic by eye
Q82SA7332SA733read from the schematic by eye
Q92SA7332SA733read from the schematic by eye
Q102SC9002SC900read from the schematic by eye
Q11??JFET switch, not in the legend; read from the schematic by eye
Q12??JFET switch, not in the legend; read from the schematic by eye
Q13??JFET switch, not in the legend; read from the schematic by eye
Q142SA7332SA733read from the schematic by eye
Q152SD2342SD234read from the schematic by eye
Q162SC9002SC900read from the schematic by eye
Q172SB4342SB434read from the schematic by eye
ICs 4
IC-1TA7136PTA7136Pread from the schematic by eye
IC-2MN3002MN3002BBD; read from the schematic by eye
IC-3TA7136PTA7136Pread from the schematic by eye
IC-4uPC1458UPC1458dual op amp; CA1458G alternative per note; read from the schematic by eye
Potentiometers 4
LevelA50KA50kPotentiometerVR11 50KA, input level control; read from the schematic by eye
Chorus IntensityB10KB10kPotentiometerVR12 10KB; read from the schematic by eye
DepthB50KB50kPotentiometerVR13 50KB; read from the schematic by eye
RateC100KC100kPotentiometerVR14 100KC; read from the schematic by eye
Trimmers 1
VR015KB5kBBD bias trimmer; printed 5KB or 6K8; read from the schematic by eye
Switches 3
S1DPDTDPDTinput HIGH/LOW, ganged with level; read from the schematic by eye
S2DPSTDPSTpower switch, two poles drawn; read from the schematic by eye
S4DPDTDPDTchorus/vibrato mode; read from the schematic by eye
LEDs 2
D101SLP-24BSLP-24BPeak level LED, per legend; read from the schematic by eye
D102SLP-24BSLP-24BPeak level LED, per legend; read from the schematic by eye