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ROSS Stereo Delay
Based on the Ross Stereo Delay· 1 other board clones 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 54 rows
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Check before you build · 3 values the reader of this schematic was not sure of
- 1u 100v: one label between two caps; read as both being 1u 100v
- Diodes: drawn as filled red diode symbols, could be LEDs used as limiters
- 2 caps have no value drawn
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 17 | ||||
| ×2 | 100R | 100 | local and remote output series resistors; read from the schematic by eye | |
| ×5 | 1K | 1k | drawn '1K' or '1k': input, clock transistor, gain stage, clock emitter, last SAD1024 output; read from the schematic by eye | |
| ×2 | 2K | 2k | 571 compressor output; delay pot series; read from the schematic by eye | |
| ×1 | 3K | 3k | clock; read from the schematic by eye | |
| ×10 | 10K | 10k | five per filter chain (two 4016 PWM filters per chain, two chains); read from the schematic by eye | |
| ×2 | 15K | 15k | clock trim leg; cut-off trim leg; read from the schematic by eye | |
| ×5 | 20K | 20k | SAD1024 pin 11 loads (two) and pin 6 loads (three); read from the schematic by eye | |
| ×1 | 27K | 27k | clock; read from the schematic by eye | |
| ×1 | 30K | 30k | bias trim leg; read from the schematic by eye | |
| ×1 | 33k | 33k | 571 compressor rectifier input; read from the schematic by eye | |
| ×2 | 36K | 36k | 571 compressor pins 10-12; read from the schematic by eye | |
| ×6 | 47K | 47k | drawn '47k' or '47K': two output pulldowns, 571 input, filter output, two SAD1024 interstage; read from the schematic by eye | |
| ×1 | 56K | 56k | bias trim leg; read from the schematic by eye | |
| ×11 | 100K | 100k | drawn '100K' or '100k': four in the mix amps, one in the 571 expander feedback, six SAD1024 bias; read from the schematic by eye | |
| ×1 | 150K | 150k | clock trim leg; read from the schematic by eye | |
| ×3 | 470K | 470k | Vb bias divider and input bias; read from the schematic by eye | |
| ×1 | 10M | 10M | 571 compressor; read from the schematic by eye | |
| Capacitors 19 | ||||
| ×3 | 33p | 33p | two mix-amp feedback caps; one clock cap drawn '33P'; read from the schematic by eye | |
| ×1 | 150p | 150p | 571 expander feedback; read from the schematic by eye | |
| ×2 | 300p | 300p | filter; read from the schematic by eye | |
| ×2 | 470p | 470p | filter; read from the schematic by eye | |
| ×1 | 510p | 510p | input; read from the schematic by eye | |
| ×2 | 750p | 750p | filter; read from the schematic by eye | |
| ×2 | 0.001u | 1n | filter; read from the schematic by eye | |
| ×1 | 0.0015u | 1.5n | across the 10K at the first filter chain output; read from the schematic by eye | |
| ×2 | 0.01u | 10n | input coupling; 571 expander pin 8; read from the schematic by eye | |
| ×1 | 0.015u | 15n | after the gain-stage 1K; read from the schematic by eye | |
| ×3 | 0.15u | 150n | filter output coupling and two SAD1024 interstage couplings; read from the schematic by eye | |
| ×3 | 0.15u | 150n | 100v; one per SAD1024; read from the schematic by eye | |
| ×6 | 1u | 1u | local mix, remote mix, delay feedback line, 571 compressor pin 10/15, expander input, bias trim; read from the schematic by eye | |
| ×2 | 1u | 1u | 100v; label '1u 100v' sits between the two caps feeding the 571 compressor's 47k and 33k; read from the schematic by eye | |
| ×1 | 1u | 1u | electrolytic, 25v; 571 compressor; read from the schematic by eye | |
| ×6 | 4u7 | 4.7u | electrolytic: Vb, two outputs, delay feedback line, 571 pin 16, before the clipping diodes; read from the schematic by eye | |
| ×1 | 15u | 15u | electrolytic, 12v supply filter; read from the schematic by eye | |
| ×1 | 47u | 47u | electrolytic, 571 expander pin 1; read from the schematic by eye | |
| ×2 | ? | ? | no value drawn: clock-transistor emitter cap (electrolytic) and cut-off trim cap to ground; read from the schematic by eye | |
| Diodes 1 | ||||
| ×3 | Diode | DIODE | no part number given; two back-to-back limiting diodes to ground after the compressor, one in the clock oscillator; read from the schematic by eye | |
| Transistors 2 | ||||
| ×1 | 2N4126 | 2N4126 | PNP, clock; read from the schematic by eye | |
| ×1 | 2SC1849 | 2SC1849 | NPN, clock; read from the schematic by eye | |
| ICs 6 | ||||
| ×4 | 4558 | 4558 | dual op amp; seven sections drawn (input buffer, two mix amps, four filter stages); read from the schematic by eye | |
| ×2 | 4016A | 4016A | quad analog switch; eight sections drawn as PWM filter switches; read from the schematic by eye | |
| ×2 | 571 | 571 | compander; one drawn 'compress', one 'expand'; read from the schematic by eye | |
| ×2 | 4013B | 4013B | dual flip-flop; four sections drawn as the clock divider; read from the schematic by eye | |
| ×1 | ? | ? | hex inverter (gates A-F, pins 1-11), part number not given; read from the schematic by eye | |
| ×3 | SAD1024 | SAD1024 | bucket-brigade delay lines in series; read from the schematic by eye | |
| Potentiometers 4 | ||||
| Local Mix | 47k | 47k | Potentiometer | read from the schematic by eye |
| Remote Mix | 47k | 47k | Potentiometer | read from the schematic by eye |
| Delay | B47K | B47k | Potentiometer | drawn '47K lin'; read from the schematic by eye |
| ×1 | B47k | B47k | Potentiometer | unnamed, drawn '47k lin'; on the delay return line, probably feedback/regen; read from the schematic by eye |
| Trimmers 5 | ||||
| Clock Trim | 20K | 20k | read from the schematic by eye | |
| Cut Off Trim | 15K | 15k | read from the schematic by eye | |
| Gain Trim | 20K | 20k | read from the schematic by eye | |
| Bias Trim | 20K | 20k | read from the schematic by eye | |
| ×1 | 2k | 2k | unnamed, across the last SAD1024 outputs (balance); read from the schematic by eye | |
Other boards based on the Ross Stereo Delay
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