Enclosure not stated
MXR Analog Delay 2
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
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 13 values the reader of this schematic was not sure of
- R11: 240K or 24K
- R13/R29: each label appears twice on the drawing
- R16: reads 4.4K
- R35, R39, R60: designators poorly legible
- C9: 750pF or 75pF
- C10, C18, C30, C31: poorly legible
- C36: 33pF or 32pF
- CR3/CR4: rectifier part number illegible
- Q6: 2N4126 poorly legible
- VR1: 340LA12 vs 342LA12
- R65 and the MXR 9475 pot: values 50K best reading, names illegible
- R19: 25K poorly legible
- feedback resistor around A-1 second half: illegible
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 54 | ||||
| R1 | 43K | 43k | read from the schematic by eye | |
| R2 | 100 | 100 | read from the schematic by eye | |
| R3 | 10K | 10k | read from the schematic by eye | |
| R4 | 10K | 10k | read from the schematic by eye | |
| R6 | 10K | 10k | read from the schematic by eye | |
| R7 | 10K | 10k | read from the schematic by eye | |
| R8 | 150K | 150k | read from the schematic by eye | |
| R9 | 150K | 150k | read from the schematic by eye | |
| R10 | 470K | 470k | read from the schematic by eye | |
| R11 | 240K | 240k | could be 24K; read from the schematic by eye | |
| R12 | 30K | 30k | read from the schematic by eye | |
| R13 | 12K | 12k | bias network beside R61; a second resistor near the Delay Time pot is also labelled R-13; read from the schematic by eye | |
| ×1 | 1K | 1k | labelled R-13 on the drawing (designator clash with the 12K R13), in series with the Delay Time pot; read from the schematic by eye | |
| R14 | 47K | 47k | read from the schematic by eye | |
| R15 | 4.7K | 4.7k | read from the schematic by eye | |
| R16 | 4.7K | 4.7k | best reading; label looks like 4.4K; read from the schematic by eye | |
| R17 | 1K | 1k | read from the schematic by eye | |
| R18 | 47K | 47k | read from the schematic by eye | |
| R21 | 470K | 470k | read from the schematic by eye | |
| R22 | 2K | 2k | read from the schematic by eye | |
| R23 | 47K | 47k | read from the schematic by eye | |
| R24 | 4.7K | 4.7k | read from the schematic by eye | |
| R25 | 4.7K | 4.7k | read from the schematic by eye | |
| R26 | 6.8K | 6.8k | read from the schematic by eye | |
| R27 | 39K | 39k | read from the schematic by eye | |
| R28 | 10K | 10k | read from the schematic by eye | |
| R29 | 12K | 12k | Q1 base; a feedback resistor at the top is also labelled R-29; read from the schematic by eye | |
| ×1 | 15K | 15k | feedback resistor across C-18, label reads R-29 (clash); value could be 150K; read from the schematic by eye | |
| R30 | 10K | 10k | read from the schematic by eye | |
| R31 | 100K | 100k | read from the schematic by eye | |
| R32 | 270 | 270 | read from the schematic by eye | |
| R33 | 5.6K | 5.6k | read from the schematic by eye | |
| R34 | 3.3K | 3.3k | read from the schematic by eye | |
| R35 | 5.6K | 5.6k | designator and value poorly legible; read from the schematic by eye | |
| R36 | 10K | 10k | read from the schematic by eye | |
| R37 | 56K | 56k | read from the schematic by eye | |
| R38 | 270 | 270 | read from the schematic by eye | |
| R39 | 2K | 2k | designator poorly legible (reads R-?0); read from the schematic by eye | |
| R40 | 270 | 270 | read from the schematic by eye | |
| R41 | 1K | 1k | read from the schematic by eye | |
| R42 | 3.9K | 3.9k | read from the schematic by eye | |
| R43 | 1K | 1k | read from the schematic by eye | |
| R44 | 2K | 2k | read from the schematic by eye | |
| R45 | 10K | 10k | read from the schematic by eye | |
| R46 | 200K | 200k | read from the schematic by eye | |
| R47 | 3.9K | 3.9k | read from the schematic by eye | |
| R48 | 9.1K | 9.1k | read from the schematic by eye | |
| R49 | 10 | 10 | read from the schematic by eye | |
| R53 | 10K | 10k | read from the schematic by eye | |
| R54 | 5.6K | 5.6k | read from the schematic by eye | |
| R57 | 100K | 100k | read from the schematic by eye | |
| R58 | 82K | 82k | read from the schematic by eye | |
| R63 | 22K | 22k | read from the schematic by eye | |
| ×1 | ? | ? | feedback resistor around the second half of A-1 (beside C-9); label illegible; read from the schematic by eye | |
| Capacitors 38 | ||||
| C1 | .033uF | 33n | read from the schematic by eye | |
| C2 | 15uF | 15u | read from the schematic by eye | |
| C3 | 100pF | 100p | read from the schematic by eye | |
| C4 | .033uF | 33n | read from the schematic by eye | |
| C5 | 2.2uF | 2.2u | read from the schematic by eye | |
| C6 | 4.7uF | 4.7u | read from the schematic by eye | |
| C7 | .0047uF | 4.7n | read from the schematic by eye | |
| C8 | .047uF | 47n | read from the schematic by eye | |
| C9 | 750pF | 750p | could be 75pF; read from the schematic by eye | |
| C10 | 10uF | 10u | designator and value poorly legible; read from the schematic by eye | |
| C11 | 1uF | 1u | read from the schematic by eye | |
| C12 | 50pF | 50p | read from the schematic by eye | |
| C13 | .0047uF | 4.7n | read from the schematic by eye | |
| C14 | .0022uF | 2.2n | read from the schematic by eye | |
| C15 | .0022uF | 2.2n | read from the schematic by eye | |
| C16 | 150pF | 150p | read from the schematic by eye | |
| C17 | .1uF | 100n | read from the schematic by eye | |
| C18 | 62pF | 62p | designator poorly legible; read from the schematic by eye | |
| C19 | 62pF | 62p | read from the schematic by eye | |
| C20 | .001uF | 1n | read from the schematic by eye | |
| C21 | 470pF | 470p | read from the schematic by eye | |
| C22 | 470pF | 470p | read from the schematic by eye | |
| C23 | 300pF | 300p | read from the schematic by eye | |
| C24 | .0015uF | 1.5n | read from the schematic by eye | |
| C25 | 15uF | 15u | read from the schematic by eye | |
| C26 | 47uF | 47u | read from the schematic by eye | |
| C27 | .001uF | 1n | read from the schematic by eye | |
| C28 | .033uF | 33n | read from the schematic by eye | |
| C29 | 15uF | 15u | read from the schematic by eye | |
| C30 | .1uF | 100n | value illegible, best guess; read from the schematic by eye | |
| C31 | .1uF | 100n | value poorly legible; read from the schematic by eye | |
| C32 | .1uF | 100n | read from the schematic by eye | |
| C33 | .033uF | 33n | read from the schematic by eye | |
| C34 | 15uF | 15u | read from the schematic by eye | |
| C35 | 30pF | 30p | read from the schematic by eye | |
| C36 | 33pF | 33p | could be 32pF; read from the schematic by eye | |
| C37 | 470uF | 470u | read from the schematic by eye | |
| ×1 | .01uF | 10n | beside R7, designator illegible; 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 | ? | ? | power-supply rectifier, part number illegible (1N4xxx); read from the schematic by eye | |
| CR4 | ? | ? | power-supply rectifier, part number illegible (1N4xxx); read from the schematic by eye | |
| CR5 | 1N914 | 1N914 | read from the schematic by eye | |
| Transistors 5 | ||||
| Q1 | ZTX109 | ZTX109 | read from the schematic by eye | |
| Q2 | ZTX109 | ZTX109 | read from the schematic by eye | |
| Q3 | ZTX109 | ZTX109 | read from the schematic by eye | |
| Q5 | ZTX109 | ZTX109 | read from the schematic by eye | |
| Q6 | 2N4126 | 2N4126 | PNP; part number poorly legible; read from the schematic by eye | |
| ICs 10 | ||||
| A1 | 4558 | 4558 | dual op amp; 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 | 4016 | 4016 | quad transmission gate; read from the schematic by eye | |
| A5 | 4558 | 4558 | dual op amp; read from the schematic by eye | |
| A6 | 4016 | 4016 | quad transmission gate; read from the schematic by eye | |
| A7 | 4013 | 4013 | dual flip-flop, half used; read from the schematic by eye | |
| A8 | 4001 | 4001 | quad NOR, clock oscillator; read from the schematic by eye | |
| U1 | R5101 | R5101 | Reticon bucket brigade; read from the schematic by eye | |
| VR1 | 340LA12 | 340LA12 | 12V regulator; reads 342LA12; read from the schematic by eye | |
| Potentiometers 3 | ||||
| Delay Time | A50K | A50k | Potentiometer | R64, 50K log, MXR 9471; read from the schematic by eye |
| ×1 | B50K | B50k | Potentiometer | 50K lin, MXR 9475; knob label illegible (likely Regen); read from the schematic by eye |
| R65 | 50K | 50k | Potentiometer | front-panel control marked * (see wiring drawing); label box illegible; read from the schematic by eye |
| Trimmers 4 | ||||
| R19 | 25K | 25k | Level trim; value poorly legible; read from the schematic by eye | |
| R60 | 2K | 2k | Balance trim; designator poorly legible; read from the schematic by eye | |
| R61 | 20K | 20k | Bias trim; read from the schematic by eye | |
| R62 | 20K | 20k | Clock trim; read from the schematic by eye | |
Other boards based on the MXR Analog Delay
- MXR Analog Delay 1 Experimentalists Anonymous
- MXR Analog Delay 3 Experimentalists Anonymous