Akashic Guitar effects PCB lookup
FILTER RANGESPEED

Enclosure not stated · 2 knobs

General Guitar Gadgets

Maestro Filter Sample/Hold

Based on the Maestro Filter Sample/Hold

Category
Wah / Envelope· FILTERS (ENVELOPE)
Controls
Filter Range · Speed
Price
$16.00in stock

From the vendor

The ready-to-solder PCB for the Maestro Filter Sample/Hold Replica. The PCB dimensions are 8.5cm by 6.0cm. PCB has solder mask, plate-through holes and screen print for placement of components. Very similar to the original PCB layout except much smaller with off-board wiring to pots and switches for more versatile use. Uses single opamp ICs, (741 opamps) as the originals used.

Click here for complete instructions for this PCB.

Any trademarks mentioned here belong to their rightful owners and do not belong to General Guitar Gadgets.

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 70 rows

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RefValueNormalizedTypeNotes
Resistors 37
R110k10k
R2100k100k
R322k22k
R4100k100k
R53k33.3k
R622k22k
R71M1M
R812k12k
R9100k100k
R103k33.3k
R113k33.3k
R123k33.3k
R1322k22k
R14100k100k
R1622k22k
R171M1M
R183k33.3k
R19100k100k
R202M72.7M
R211M1M
R2222k22k
R23100k100k
R24100k100k
R251M1M
R26100k100k
R2710k10k
R29180k180k
R301M1M
R3122k22k
R323k33.3k
R3322k22k
R3447k47k
R35470470
R36470470
R371k1k
R386k86.8k
R391k1k
Capacitors 14
C10.047ųF47n
C20.15ųF150n
C30.001ųF1n
C40.15ųF150n
C50.033ųF33n
C64.7ųF4.7u
C70.15ųF150n
C80.047ųF47n
C90.047ųF47n
C100.33ųF330n
C12100ųF100u
C14100ųF100u
C1510ųF10u
C1610ųF10u
Diodes 4
D11N9141N914
D21N9141N914
D31N9141N914
D4StatusSTATUS
Transistors 7
Q12N5088 or 2N50892N5088 OR 2N5089
Q22N54572N5457
Q32N39062N3906
Q42N39042N3904
Q52N54572N5457
Q62N54572N5457
Q72N39062N3906
ICs 6
IC1CA3080CA3080
IC2CA3080CA3080
IC3LM741LM741
IC4LM741LM741
IC5LM741LM741
IC6MAX1044MAX1044
Potentiometers 2
FILTER RANGEB100kB100kPotentiometer
SPEEDB1MB1MPotentiometer