Enclosure not stated · 3 knobs
MXR Analog Delay 1
Based on the MXR Analog Delay· 2 other boards clone it
- Category
- Delay· Delay Echo and Samplers
- Price
- see vendor
- Tags
- Delay Echo and Samplers
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 119 rows
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Check before you build · 8 values the reader of this schematic was not sure of
- C4: value not legible
- C26: value not legible
- C20: 56P or 68P
- R43: 30K or 39K
- R51: two parts appear labelled R51 (10K output resistor and 20K trim)
- R59: designator faint
- Q1: '4126' partial part number
- Q2: read 'ZTK 109', taken as ZTX109
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 50 | ||||
| R1 | 36K | 36k | handwritten 36K (6 drawn like b); read from the schematic by eye | |
| R2 | 470K | 470k | read from the schematic by eye | |
| R3 | 470K | 470k | read from the schematic by eye | |
| R4 | 2K | 2k | read from the schematic by eye | |
| R5 | 10K | 10k | read from the schematic by eye | |
| R6 | 4.7K | 4.7k | read from the schematic by eye | |
| R7 | 10K | 10k | read from the schematic by eye | |
| R8 | 10K | 10k | read from the schematic by eye | |
| R9 | 6.8K | 6.8k | read from the schematic by eye | |
| R12 | 36K | 36k | handwritten 36K (6 drawn like b); read from the schematic by eye | |
| R13 | 470K | 470k | read from the schematic by eye | |
| R14 | 2K | 2k | read from the schematic by eye | |
| R15 | 1K | 1k | read from the schematic by eye | |
| R16 | 47K | 47k | read from the schematic by eye | |
| R17 | 10M | 10M | read from the schematic by eye | |
| R19 | 33K | 33k | read from the schematic by eye | |
| R20 | 100K | 100k | read from the schematic by eye | |
| R21 | 100K | 100k | read from the schematic by eye | |
| R22 | 1K | 1k | read from the schematic by eye | |
| R24 | 100 | 100 | read from the schematic by eye | |
| R26 | 10K | 10k | read from the schematic by eye | |
| R27 | 10K | 10k | read from the schematic by eye | |
| R28 | 10K | 10k | read from the schematic by eye | |
| R29 | 10K | 10k | read from the schematic by eye | |
| R30 | 47K | 47k | read from the schematic by eye | |
| R31 | 100K | 100k | read from the schematic by eye | |
| R32 | 4.7K | 4.7k | read from the schematic by eye | |
| R33 | 100K | 100k | read from the schematic by eye | |
| R34 | 4.7K | 4.7k | read from the schematic by eye | |
| R35 | 100K | 100k | read from the schematic by eye | |
| R36 | 4.7K | 4.7k | read from the schematic by eye | |
| R37 | 100K | 100k | read from the schematic by eye | |
| R38 | 4.7K | 4.7k | read from the schematic by eye | |
| R39 | 100K | 100k | read from the schematic by eye | |
| R40 | 4.7K | 4.7k | read from the schematic by eye | |
| R41 | 100K | 100k | read from the schematic by eye | |
| R42 | 56K | 56k | read from the schematic by eye | |
| R43 | 30K | 30k | could be 30K or 39K; last digit faint; read from the schematic by eye | |
| R45 | 3K | 3k | read from the schematic by eye | |
| R46 | 1K | 1k | read from the schematic by eye | |
| R47 | 27K | 27k | read from the schematic by eye | |
| R48 | 2.4K | 2.4k | read from the schematic by eye | |
| R49 | 1K | 1k | read from the schematic by eye | |
| R51 | 10K | 10k | output resistor to ground at T.P.; designator hard to read (looks like R51, which is also the 20K trim); read from the schematic by eye | |
| R53 | 16K | 16k | handwritten 6 drawn like b; 16K; read from the schematic by eye | |
| R54 | 100K | 100k | read from the schematic by eye | |
| R55 | 10K | 10k | read from the schematic by eye | |
| R56 | 47K | 47k | read from the schematic by eye | |
| R57 | 47K | 47k | read from the schematic by eye | |
| R59 | 1K | 1k | designator faint (R59?); across the SAD1024 outputs beside R58; read from the schematic by eye | |
| Capacitors 39 | ||||
| C1 | 1uF | 1u | read from the schematic by eye | |
| C2 | .001uF | 1n | read from the schematic by eye | |
| C3 | 750p | 750p | written 750P, first digit blotted; read from the schematic by eye | |
| C4 | ? | ? | polarized, NE571 rectifier cap; value not legible (a stroke that may be 1); read from the schematic by eye | |
| C5 | .0016uF | 1.6n | read from the schematic by eye | |
| C6 | 470p | 470p | read from the schematic by eye | |
| C7 | 300p | 300p | read from the schematic by eye | |
| C8 | .0047uF | 4.7n | read from the schematic by eye | |
| C9 | 4.7uF | 4.7u | read from the schematic by eye | |
| C10 | .01uF | 10n | read from the schematic by eye | |
| C11 | .1uF | 100n | read from the schematic by eye | |
| C12 | 15uF | 15u | read from the schematic by eye | |
| C13 | .47uF | 470n | read from the schematic by eye | |
| C14 | 1uF | 1u | read from the schematic by eye | |
| C15 | .0022uF | 2.2n | read from the schematic by eye | |
| C16 | .1uF | 100n | read from the schematic by eye | |
| C17 | 1uF | 1u | read from the schematic by eye | |
| C18 | 750p | 750p | read from the schematic by eye | |
| C19 | .001uF | 1n | read from the schematic by eye | |
| C20 | 56p | 56p | could be 56P or 68P; read from the schematic by eye | |
| C21 | 4.7uF | 4.7u | read from the schematic by eye | |
| C22 | .015uF | 15n | read from the schematic by eye | |
| C23 | 470p | 470p | read from the schematic by eye | |
| C24 | 300p | 300p | read from the schematic by eye | |
| C25 | .33uF | 330n | read from the schematic by eye | |
| C26 | ? | ? | NE571 rectifier cap; value not legible (a stroke that may be 1); read from the schematic by eye | |
| C27 | .15uF | 150n | read from the schematic by eye | |
| C28 | .15uF | 150n | read from the schematic by eye | |
| C29 | .15uF | 150n | read from the schematic by eye | |
| C30 | .15uF | 150n | read from the schematic by eye | |
| C31 | .15uF | 150n | read from the schematic by eye | |
| C32 | .15uF | 150n | read from the schematic by eye | |
| C33 | 15uF | 15u | read from the schematic by eye | |
| C34 | 400uF | 400u | power supply reservoir; read from the schematic by eye | |
| C35 | 15uF | 15u | read from the schematic by eye | |
| C36 | .1uF | 100n | read from the schematic by eye | |
| C37 | 1uF | 1u | read from the schematic by eye | |
| C38 | 30p | 30p | read from the schematic by eye | |
| C39 | 30p | 30p | read from the schematic by eye | |
| Diodes 5 | ||||
| CR1 | 1N914 | 1N914 | read from the schematic by eye | |
| CR2 | 1N914 | 1N914 | read from the schematic by eye | |
| CR3 | 1N914 | 1N914 | power supply rectifier; read from the schematic by eye | |
| CR4 | 1N914 | 1N914 | power supply rectifier; read from the schematic by eye | |
| CR5 | 1N914 | 1N914 | read from the schematic by eye | |
| Transistors 2 | ||||
| Q1 | 4126 | 2N4126 | label reads '4126' (2N4126?); clock oscillator; read from the schematic by eye | |
| Q2 | ZTX109 | ZTX109 | label reads 'ZTK 109', presumably ZTX109; read from the schematic by eye | |
| ICs 13 | ||||
| A1 | 1458 | 1458 | dual op-amp (A-1-A, A-1-B); read from the schematic by eye | |
| A2 | 4558 | 4558 | dual op-amp; read from the schematic by eye | |
| A3 | 4558 | 4558 | dual op-amp; read from the schematic by eye | |
| A4 | SAD1024 | SAD1024 | BBD; read from the schematic by eye | |
| A5 | SAD1024 | SAD1024 | BBD; read from the schematic by eye | |
| A6 | SAD1024 | SAD1024 | BBD; read from the schematic by eye | |
| A7 | 4013 | 4013 | CD4013AE dual D flip-flop; read from the schematic by eye | |
| A8 | 4013 | 4013 | read from the schematic by eye | |
| A9 | NE571 | NE571 | compander (A-9-A, A-9-B); read from the schematic by eye | |
| A10 | 4016 | 4016 | quad analog switch (transmission gates); read from the schematic by eye | |
| A11 | 4016 | 4016 | quad analog switch (transmission gates); read from the schematic by eye | |
| ×1 | 4069 | 4069 | hex inverter, clock; no designator drawn; read from the schematic by eye | |
| ×1 | 340L12 | 340L12 | 12V regulator in the AC power supply; read from the schematic by eye | |
| Potentiometers 3 | ||||
| Mix | 50K | 50k | Potentiometer | R18; read from the schematic by eye |
| Regen | 50K | 50k | Potentiometer | R23; read from the schematic by eye |
| Delay | 50K | 50k | Potentiometer | R52; drawn as variable resistor; read from the schematic by eye |
| Trimmers 7 | ||||
| R10 | 20K | 20k | read from the schematic by eye | |
| R11 | 20K | 20k | read from the schematic by eye | |
| R25 | 20K | 20k | read from the schematic by eye | |
| R44 | 20K | 20k | read from the schematic by eye | |
| R50 | 20K | 20k | read from the schematic by eye | |
| R51 | 20K | 20k | read from the schematic by eye | |
| R58 | 2K | 2k | read from the schematic by eye | |
Other boards based on the MXR Analog Delay
- MXR Analog Delay 2 Experimentalists Anonymous
- MXR Analog Delay 3 Experimentalists Anonymous