Enclosure not stated
Maestro MPS-2
Based on the Maestro MPS-2 Mini Phase· 1 other board clones it
- Category
- Phaser· Phasers
- Price
- see vendor
- Tags
- Phasers
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 33 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 9 | ||||
| ×11 | 100K | 100k | input bias, output pulldown, 4 input + 4 feedback in the all-pass stages, after S1; read from the schematic by eye | |
| ×2 | 2.2K | 2.2k | output series; Q6 base; read from the schematic by eye | |
| ×3 | 10K | 10k | Q5 emitter, IC5-IC6, below R3; read from the schematic by eye | |
| ×1 | 12K | 12k | IC6 feedback; read from the schematic by eye | |
| ×4 | 22K | 22k | FET drain divider pair, Q7 base, +4V load; read from the schematic by eye | |
| ×2 | 43K | 43k | Q5 bias, output mix; read from the schematic by eye | |
| ×1 | 47K | 47k | Q7 base to ground; read from the schematic by eye | |
| ×1 | 150K | 150k | LFO feedback via R3; read from the schematic by eye | |
| ×2 | 390K | 390k | FET gate feed from R1 and R2; read from the schematic by eye | |
| Capacitors 6 | ||||
| ×3 | .15uF | 150n | input coupling, output coupling (drawn polarized), after S1; read from the schematic by eye | |
| ×1 | .001uF | 1n | input; read from the schematic by eye | |
| ×4 | .01uF | 10n | all-pass stage caps; read from the schematic by eye | |
| ×2 | .33uF | 330n | LFO integrator, gate filter; read from the schematic by eye | |
| ×1 | 200uF | 200u | electrolytic, 10V, +7V rail; read from the schematic by eye | |
| ×1 | 20uF | 20u | electrolytic, 10V, +4V rail; read from the schematic by eye | |
| Diodes 1 | ||||
| D1 | 1N755A | 1N755A / 7V5 | 7.5V zener (or a 47K resistor); read from the schematic by eye | |
| Transistors 7 | ||||
| Q1 | 2N4303 | 2N4303 | JFET, matched set Q1-Q4; read from the schematic by eye | |
| Q2 | 2N4303 | 2N4303 | JFET, matched set; read from the schematic by eye | |
| Q3 | 2N4303 | 2N4303 | JFET, matched set; read from the schematic by eye | |
| Q4 | 2N4303 | 2N4303 | JFET, matched set; read from the schematic by eye | |
| Q5 | TIS97 | TIS97 | NPN input buffer; read from the schematic by eye | |
| Q6 | TIS97 | TIS97 | NPN regulator; read from the schematic by eye | |
| Q7 | TIS97 | TIS97 | NPN +4V reference; read from the schematic by eye | |
| ICs 6 | ||||
| IC1 | SN72741 | SN72741 | 741 op amp; read from the schematic by eye | |
| IC2 | SN72741 | SN72741 | 741 op amp; read from the schematic by eye | |
| IC3 | SN72741 | SN72741 | 741 op amp; read from the schematic by eye | |
| IC4 | SN72741 | SN72741 | 741 op amp; read from the schematic by eye | |
| IC5 | SN72741 | SN72741 | 741 op amp; read from the schematic by eye | |
| IC6 | SN72741 | SN72741 | 741 op amp; read from the schematic by eye | |
| Potentiometers 1 | ||||
| R3 | A500K | A500k | Potentiometer | 500K log, LFO rate (not named on the drawing); read from the schematic by eye |
| Trimmers 2 | ||||
| R1 | 100K | 100k | Osc. Ampl.; read from the schematic by eye | |
| R2 | 100K | 100k | FET Bias; read from the schematic by eye | |
| Switches 1 | ||||
| S1 | SPST | SPST | push switch, Phasing On; read from the schematic by eye | |
Other boards based on the Maestro MPS-2 Mini Phase
- Maestro MPS-2 Mini Phase - ON HOLD Tagboard Effects · 125B