Enclosure not stated · 5 knobs
Electro Harmonix Deluxe Octave Multiplexer
Based on the Electro-Harmonix Deluxe Octave Multiplexer
- Category
- Octave / Pitch· Vibrato and Pitch Shift
- Controls
- Sensitivity · Fuzz · Subharmonic · Tone · Blend
- Price
- see vendor
- Tags
- Vibrato and Pitch Shift
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 78 rows
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Check before you build · 5 values the reader of this schematic was not sure of
- 1N4148, 10K and 100K counts are approximate on a dense sheet
- 18K in the tone network could be 1.8K
- Bass-switch .0015 and 180K are partly hidden by the scan seam
- 1458 chip count inferred (2)
- One 180K may read 130K
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 34 | ||||
| ×2 | 1M | 1M | input pulldown; diode-limiter feedback; read from the schematic by eye | |
| ×2 | 62K | 62k | input; bass switch; read from the schematic by eye | |
| ×2 | 120K | 120k | input op amp gain; read from the schematic by eye | |
| ×1 | 33K | 33k | read from the schematic by eye | |
| ×4 | 470K | 470k | pair at 4558 stage, 180pF stage, mute detector; read from the schematic by eye | |
| ×2 | 680 | 680 | OTA stage; PSU LED resistor (680Ω); read from the schematic by eye | |
| ×11 | 10K | 10k | count approximate; one at direct output drawn smudged; read from the schematic by eye | |
| ×4 | 150K | 150k | read from the schematic by eye | |
| ×1 | 15K | 15k | read from the schematic by eye | |
| ×12 | 100K | 100k | count approximate; read from the schematic by eye | |
| ×1 | 5.1K | 5.1k | read from the schematic by eye | |
| ×7 | 1K | 1k | read from the schematic by eye | |
| ×2 | 2.4K | 2.4k | read from the schematic by eye | |
| ×2 | 12K | 12k | read from the schematic by eye | |
| ×2 | 20K | 20k | read from the schematic by eye | |
| ×1 | 24K | 24k | read from the schematic by eye | |
| ×1 | 11K | 11k | mute comparator; read from the schematic by eye | |
| ×3 | 82K | 82k | mute comparator; JFET gate feeds B and C; read from the schematic by eye | |
| ×1 | 680K | 680k | mute comparator; read from the schematic by eye | |
| ×1 | 8.2K | 8.2k | read from the schematic by eye | |
| ×2 | 27K | 27k | read from the schematic by eye | |
| ×3 | 47K | 47k | read from the schematic by eye | |
| ×2 | 5.6K | 5.6k | read from the schematic by eye | |
| ×6 | 180K | 180k | one in the 4013 input network may read 130K; one by the bass switch half-hidden; read from the schematic by eye | |
| ×2 | 4.7M | 4.7M | read from the schematic by eye | |
| ×1 | 130K | 130k | subharmonic mixer; read from the schematic by eye | |
| ×2 | 390K | 390k | subharmonic mixers; read from the schematic by eye | |
| ×2 | 100 | 100 | supply decoupling, drawn 100Ω; read from the schematic by eye | |
| ×1 | 30K | 30k | read from the schematic by eye | |
| ×1 | 3.9K | 3.9k | output filter op amp; read from the schematic by eye | |
| ×1 | 18K | 18k | tone network; could be 1.8K; read from the schematic by eye | |
| ×1 | 4.3K | 4.3k | direct output; read from the schematic by eye | |
| ×1 | 150 | 150 | output series, drawn 150Ω; read from the schematic by eye | |
| ×2 | 1.5K | 1.5k | PSU zener feed; read from the schematic by eye | |
| Capacitors 23 | ||||
| ×1 | .047uF | 47n | input, drawn .047; read from the schematic by eye | |
| ×1 | .22uF | 220n | read from the schematic by eye | |
| ×1 | 4.7pF | 4.7p | read from the schematic by eye | |
| ×1 | .33uF | 330n | read from the schematic by eye | |
| ×4 | 1uF | 1u | one electrolytic 10% at 2N5087; one at top; two 16V in PSU; read from the schematic by eye | |
| ×1 | 180pF | 180p | read from the schematic by eye | |
| ×3 | .033uF | 33n | read from the schematic by eye | |
| ×8 | .1uF | 100n | drawn .1; four in subharmonic JFET switches, two PSU bypass; read from the schematic by eye | |
| ×1 | .068uF | 68n | 741 integrator; read from the schematic by eye | |
| ×2 | 2.2uF | 2.2u | 10%, electrolytic; read from the schematic by eye | |
| ×1 | .056uF | 56n | read from the schematic by eye | |
| ×1 | .001uF | 1n | read from the schematic by eye | |
| ×1 | 150pF | 150p | read from the schematic by eye | |
| ×1 | 27pF | 27p | at 4013; read from the schematic by eye | |
| ×2 | 33uF | 33u | supply decoupling; read from the schematic by eye | |
| ×1 | .012uF | 12n | bass switch; read from the schematic by eye | |
| ×1 | .0015uF | 1.5n | bass switch; drawn .0015 across the scan seam, partly hidden; read from the schematic by eye | |
| ×1 | .15uF | 150n | read from the schematic by eye | |
| ×1 | 4.7uF | 4.7u | output; read from the schematic by eye | |
| ×1 | .47uF | 470n | 10%, drawn .47uf; read from the schematic by eye | |
| ×2 | 220uF | 220u | PSU, 25V; read from the schematic by eye | |
| ×2 | 47pF | 47p | PSU regulator; read from the schematic by eye | |
| ×2 | 470uF | 470u | PSU, 16V; read from the schematic by eye | |
| Diodes 3 | ||||
| ×17 | 1N4148 | 1N4148 | diodes 1N4148 per the note; count approximate; read from the schematic by eye | |
| ×2 | 1N5243B | 1N5243B / 13V | zener references in PSU (one drawn 524BB); read from the schematic by eye | |
| ×1 | W02M | W02M | full-wave bridge rectifier; read from the schematic by eye | |
| Transistors 3 | ||||
| ×3 | 2N5087 | 2N5087 | PNP: two in the envelope section (marked BOTH), one PSU regulator; read from the schematic by eye | |
| ×1 | 2N5088 | 2N5088 | NPN PSU regulator; read from the schematic by eye | |
| ×2 | 2N4302 | 2N4302 | N-JFET subharmonic switches; read from the schematic by eye | |
| ICs 7 | ||||
| ×4 | 4558 | 4558 | dual op amp, sections numbered 1-4; input section drawn 4557; read from the schematic by eye | |
| ×2 | 1458 | 1458 | dual op amp; chip count inferred from sections; read from the schematic by eye | |
| ×1 | 3080 | 3080 | OTA; read from the schematic by eye | |
| ×1 | 741 | 741 | read from the schematic by eye | |
| ×2 | 1048 | 1048 | drawn 1048, dual op amp (as on drawing); read from the schematic by eye | |
| ×2 | 311 | 311 | comparators; read from the schematic by eye | |
| ×1 | 4013B | 4013B | dual flip-flop, drawn 40138; read from the schematic by eye | |
| Potentiometers 5 | ||||
| Sensitivity | B10K | B10k | Potentiometer | drawn 10K lin; read from the schematic by eye |
| Fuzz | B100K | B100k | Potentiometer | drawn 100K lin; read from the schematic by eye |
| Subharmonic | B10K | B10k | Potentiometer | drawn 10K lin; read from the schematic by eye |
| Tone | B10K | B10k | Potentiometer | drawn 10K lin; read from the schematic by eye |
| Blend | B100K | B100k | Potentiometer | drawn 100K lin; read from the schematic by eye |
| Switches 2 | ||||
| Bass Switch | DPDT | DPDT | two ganged poles (dashed link); read from the schematic by eye | |
| ×1 | SPST | SPST | mains power switch; read from the schematic by eye | |
| LEDs 1 | ||||
| ×1 | LED | LED | ON indicator; read from the schematic by eye | |