Enclosure not stated · 5 knobs
ROSS Stereo Delay 2
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 135 rows
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Check before you build · 12 values the reader of this schematic was not sure of
- Whole sheet is a low-resolution scan (965x531); every value is read near the limit of legibility
- C3, C4, C9, C14, C15, C24, C29, C44: drawn '1', could be .1uF
- C34, C35, C37-C40: drawn '15', read .15uF
- C7, C45: 330pF or 33pF
- C6: .01 or .1
- R45: 20K or 26K
- R47: 30K or 39K
- R60: 1K or 3K
- R16: designator unclear
- R21, C5, Gain trim R20 values illegible
- Q1, Q2 part numbers
- supply regulator part number
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 55 | ||||
| R1 | 1K | 1k | 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 | 470K | 470k | read from the schematic by eye | |
| R6 | 10K | 10k | read from the schematic by eye | |
| R7 | 100K | 100k | read from the schematic by eye | |
| R8 | 100 | 100 | read from the schematic by eye | |
| R9 | 47K | 47k | read from the schematic by eye | |
| R11 | 33K | 33k | read from the schematic by eye | |
| R12 | 47K | 47k | read from the schematic by eye | |
| R13 | 36K | 36k | read from the schematic by eye | |
| R14 | 36K | 36k | read from the schematic by eye | |
| R15 | 2K | 2k | read from the schematic by eye | |
| R16 | 100K | 100k | feedback on I4A NE571; number hard to read (R15/R16); read from the schematic by eye | |
| R17 | 10K | 10k | read from the schematic by eye | |
| R19 | 10MEG | 10M | read from the schematic by eye | |
| R21 | ? | ? | value not legible; read from the schematic by eye | |
| R22 | 10K | 10k | read from the schematic by eye | |
| R23 | 10K | 10k | read from the schematic by eye | |
| R24 | 10K | 10k | read from the schematic by eye | |
| R25 | 10K | 10k | read from the schematic by eye | |
| R26 | 10K | 10k | read from the schematic by eye | |
| R28 | 1K | 1k | Balance network; read from the schematic by eye | |
| R29 | 20K | 20k | read from the schematic by eye | |
| R30 | 10K | 10k | read from the schematic by eye | |
| R32 | 10K | 10k | read from the schematic by eye | |
| R33 | 10K | 10k | read from the schematic by eye | |
| R34 | 6.8K | 6.8k | read from the schematic by eye | |
| R35 | 10K | 10k | read from the schematic by eye | |
| R36 | 100K | 100k | read from the schematic by eye | |
| R37 | 100K | 100k | read from the schematic by eye | |
| R38 | 100K | 100k | read from the schematic by eye | |
| R39 | 47K | 47k | read from the schematic by eye | |
| R40 | 20K | 20k | read from the schematic by eye | |
| R41 | 20K | 20k | read from the schematic by eye | |
| R42 | 47K | 47k | read from the schematic by eye | |
| R43 | 100K | 100k | read from the schematic by eye | |
| R44 | 100K | 100k | read from the schematic by eye | |
| R45 | 26K | 26k | could be 20K or 26K; read from the schematic by eye | |
| R47 | 30K | 30k | could be 30K or 39K; read from the schematic by eye | |
| R48 | 20K | 20k | read from the schematic by eye | |
| R49 | 20K | 20k | read from the schematic by eye | |
| R51 | 10K | 10k | read from the schematic by eye | |
| R53 | 2K | 2k | read from the schematic by eye | |
| R54 | 1K | 1k | read from the schematic by eye | |
| R55 | 15K | 15k | read from the schematic by eye | |
| R57 | 150K | 150k | read from the schematic by eye | |
| R58 | 1K | 1k | read from the schematic by eye | |
| R59 | 27K | 27k | read from the schematic by eye | |
| R60 | 1K | 1k | could be 1K or 3K; read from the schematic by eye | |
| R61 | 100K | 100k | read from the schematic by eye | |
| R62 | 100K | 100k | read from the schematic by eye | |
| R64 | 100K | 100k | read from the schematic by eye | |
| R65 | 100 | 100 | read from the schematic by eye | |
| R66 | 47K | 47k | read from the schematic by eye | |
| Capacitors 48 | ||||
| C1 | 400uF | 400u | 25V electrolytic; read from the schematic by eye | |
| C2 | 15uF | 15u | 25V electrolytic; read from the schematic by eye | |
| C3 | 1uF | 1u | 100V; dot lost? drawn '1'; could be .1uF; read from the schematic by eye | |
| C4 | 1uF | 1u | 100V supply bypass; dot lost? drawn '1'; could be .1uF; read from the schematic by eye | |
| C5 | ? | ? | near 4069 supply; value not legible; read from the schematic by eye | |
| C6 | .01uF | 10n | 100V; could be .1uF; read from the schematic by eye | |
| C7 | 330pF | 330p | could be 33pF; read from the schematic by eye | |
| C8 | 4.7uF | 4.7u | 25V; read from the schematic by eye | |
| C9 | 1uF | 1u | 100V; dot lost? drawn '1'; could be .1uF; read from the schematic by eye | |
| C10 | 4.7uF | 4.7u | 25V; read from the schematic by eye | |
| C11 | 1uF | 1u | 25V; read from the schematic by eye | |
| C12 | 4.7uF | 4.7u | 25V; read from the schematic by eye | |
| C13 | 150pF | 150p | read from the schematic by eye | |
| C14 | 1uF | 1u | 100V; dot lost? drawn '1'; could be .1uF; read from the schematic by eye | |
| C15 | 1uF | 1u | 100V; dot lost? drawn '1'; could be .1uF; read from the schematic by eye | |
| C16 | 4.7uF | 4.7u | 25V; read from the schematic by eye | |
| C17 | 1uF | 1u | 25V; read from the schematic by eye | |
| C18 | 1uF | 1u | 25V; read from the schematic by eye | |
| C19 | 4.7uF | 4.7u | 25V; read from the schematic by eye | |
| C20 | 4.7uF | 4.7u | 25V; read from the schematic by eye | |
| C21 | 1uF | 1u | 25V; read from the schematic by eye | |
| C22 | .015uF | 15n | 100V; designator not legible, sits by R20; read from the schematic by eye | |
| C23 | 470pF | 470p | 50V; read from the schematic by eye | |
| C24 | 1uF | 1u | 100V supply bypass; dot lost? drawn '1'; could be .1uF; read from the schematic by eye | |
| C25 | 750pF | 750p | 50V; read from the schematic by eye | |
| C26 | 330pF | 330p | 50V; read from the schematic by eye | |
| C27 | .001uF | 1n | 100V; read from the schematic by eye | |
| C28 | .001uF | 1n | 100V; read from the schematic by eye | |
| C29 | 1uF | 1u | 100V supply bypass; dot lost? drawn '1'; could be .1uF; read from the schematic by eye | |
| C30 | 330pF | 330p | 50V; drawn could be 300PF; read from the schematic by eye | |
| C31 | 750pF | 750p | 50V; read from the schematic by eye | |
| C32 | 470pF | 470p | 50V; read from the schematic by eye | |
| C33 | .0015uF | 1.5n | 100V; read from the schematic by eye | |
| C34 | .15uF | 150n | 100V; drawn '15'; leading point probably lost at this resolution, could be 1.5uF; read from the schematic by eye | |
| C35 | .15uF | 150n | 100V; drawn '15'; leading point probably lost at this resolution, could be 1.5uF; read from the schematic by eye | |
| C36 | 1uF | 1u | 25V; read from the schematic by eye | |
| C37 | .15uF | 150n | 100V; drawn '15'; leading point probably lost at this resolution, could be 1.5uF; read from the schematic by eye | |
| C38 | .15uF | 150n | 100V; drawn '15'; leading point probably lost at this resolution, could be 1.5uF; read from the schematic by eye | |
| C39 | .15uF | 150n | 100V; drawn '15'; leading point probably lost at this resolution, could be 1.5uF; read from the schematic by eye | |
| C40 | .15uF | 150n | 100V; drawn '15'; leading point probably lost at this resolution, could be 1.5uF; read from the schematic by eye | |
| C41 | 1uF | 1u | 25V; read from the schematic by eye | |
| C42 | 33pF | 33p | read from the schematic by eye | |
| C43 | 33pF | 33p | read from the schematic by eye | |
| C44 | 1uF | 1u | 100V; dot lost? drawn '1'; could be .1uF; read from the schematic by eye | |
| C45 | 330pF | 330p | could be 33pF; read from the schematic by eye | |
| C46 | 4.7uF | 4.7u | 25V; read from the schematic by eye | |
| C47 | 500pF | 500p | read from the schematic by eye | |
| C48 | .01uF | 10n | read from the schematic by eye | |
| Diodes 5 | ||||
| CR1 | 1N914 | 1N914 | power supply rectifier; read from the schematic by eye | |
| CR2 | 1N914 | 1N914 | power supply rectifier; read from the schematic by eye | |
| CR3 | 1N914 | 1N914 | read from the schematic by eye | |
| CR4 | 1N914 | 1N914 | read from the schematic by eye | |
| CR5 | 1N914 | 1N914 | read from the schematic by eye | |
| Transistors 2 | ||||
| Q1 | 2N4126 | 2N4126 | part number could be 2N4125 or 2N4128; read from the schematic by eye | |
| Q2 | 2SC1849 | 2SC1849 | part number barely legible; read from the schematic by eye | |
| ICs 14 | ||||
| I1 | RC4558 | RC4558 | input buffer and local mix; read from the schematic by eye | |
| I2 | 4016 | 4016 | drawn 4016A; channel 2 switches; read from the schematic by eye | |
| I3 | RC4558 | RC4558 | read from the schematic by eye | |
| I4 | NE571 | NE571 | compander, both halves; read from the schematic by eye | |
| I5 | RC4558 | RC4558 | read from the schematic by eye | |
| I6 | 4016 | 4016 | drawn 4016A; read from the schematic by eye | |
| I7 | SAD1024 | SAD1024 | read from the schematic by eye | |
| I8 | SAD1024 | SAD1024 | read from the schematic by eye | |
| I9 | SAD1024 | SAD1024 | read from the schematic by eye | |
| I10 | 4013 | 4013 | drawn 4013B; read from the schematic by eye | |
| I11 | 4013 | 4013 | drawn 4013B; read from the schematic by eye | |
| I12 | 4069UB | 4069UB | read from the schematic by eye | |
| I14 | RC4558 | RC4558 | remote mix; I14B not used per note; read from the schematic by eye | |
| ×1 | ? | ? | voltage regulator on the supply, part number not legible; read from the schematic by eye | |
| Potentiometers 5 | ||||
| Local Mix | 50K LIN | B50k | Potentiometer | R5; read from the schematic by eye |
| Recycle | 50K LIN | B50k | Potentiometer | R10; read from the schematic by eye |
| Remote Mix | 50K LIN | B50k | Potentiometer | R63; read from the schematic by eye |
| Delay | 50K LIN | B50k | Potentiometer | R52; read from the schematic by eye |
| Bias | 20K LIN | B20k | Potentiometer | R46; read from the schematic by eye |
| Trimmers 4 | ||||
| Gain | ? | ? | R20; value not legible; read from the schematic by eye | |
| Balance | 2K | 2k | R27; read from the schematic by eye | |
| Cutoff | 20K | 20k | R50; read from the schematic by eye | |
| Clock | 20K | 20k | R56; read from the schematic by eye | |
| Switches 2 | ||||
| SW1 | SPDT | SPDT | Local; may be a switching-jack contact; read from the schematic by eye | |
| SW2 | SPDT | SPDT | Remote; may be a switching-jack contact; read from the schematic by eye | |
Other boards based on the Ross Stereo Delay
- ROSS Stereo Delay Experimentalists Anonymous