ARP 1005 MODAMP
The ARP 1005 MODTAMP - This module combined a Balanced Modulator and a VCA.
Some 1005 module photos and the 1005 spec sheet can be found at the HKU Hilversum website
SCHEMATIC
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ARP 1005 MODAMP The ARP 1005 MODTAMP - This module combined a Balanced Modulator and a VCA. Some 1005 module photos and the 1005 spec sheet can be found at the HKU Hilversum website SCHEMATIC - (click on image to download full-sized version)
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PARTS LIST
| Resistors | 1/4 watt, 10%, carbon composite |
| 27 Ohm | R102, R103 |
| 56 Ohm | R73, R74 |
| 100 Ohm | R51, R55 |
| 330 Ohm | R10, R19 |
| 390 Ohm | R42, R63, R68 |
| 470 Ohm | R48 |
| 1 K | R100 |
| 3.3 K | R72 |
| 4.7 K | R40, R46, R79 |
| 10 K | R??, R9, R18, R43, R64, R69, R75 |
| 15 K | R85, R91, R21 |
| 18 K | R53 |
| 22 K | R34, R??, R80, R82 |
| 33 K | R6, R16, R50 |
| 47 K | R52, R65, R70 |
| 56 K | R41, R56 |
| 100 K | R23, R24, R25, R26, R27, R28, R31, R54, R62, R66, R67, R71, R76, R92, R93, R94, R95 |
| 150 K | R78, R81, R83, R84, R98, R99 |
| 390 K | R36 |
| 470 K | R86, R87, R88, R89, R90 |
| 1 Meg | R8, R17, R60, R61 |
| Resistors | 1/8 watt, 1%, metal film |
| 3.32 K | R35 |
| 6.98 K | R37 |
| 30.1 K | R4, R13 |
| 121 K | R3, R11, R12 |
| Tempco Resistors | 1/4 watt, 3%, +3500ppm |
| 100 Ohm | R38 |
| Trim Pots | Linear Taper |
| 2.5 K | R47 |
| 50 K | R49 |
| 100 K | R97, R101 |
| 250 K | R57 |
| Potentiometers | Linear Taper |
| 10 K | R1, R2 |
| 50 K | R22 |
| 100 K | R29, R30 |
| Capacitors | 20%, 50 volt, ceramic disc |
| 20 pF | C1, C4, C7, C10, C13, C16 |
| 30 pF | C2, C5, C8 |
| 50 pF | C3, C6, C9, C15, C18 |
| 680 pF | C12 |
| 0.001 uF | C26, C27 (1nF) |
| 0.0022 uF | C11, C14, C17 (2.2nF) |
| 0.01 uF | C25 (10nF) |
| 0.1 uF | C19, C20, C21, C22 |
| Capacitors | 20%, 35 volt, tantalum |
| 10 uF | C23, C24 |
| Diodes | |
| 1N4148 | CR1 thru CR17 (all) |
| Transistors | |
| 2N5460 | Q1, Q2, Q3, Q4 |
| 2N5172 | Q5, Q6, Q7, Q8, Q9, Q10 |
| TZ581 ** | Q11, Q12 |
| TZ81 ** | Q17 |
| TZ581 | Q14, Q15 (matched pair) |
| TZ81 | Q18, Q19 (matched pair) |
| TZ81 | Q20, Q21 (matched pair) |
| NPN/PNP ASSY | Q13 (TZ581), Q16 (TZ81) matched complementary pair |
| Integrated Circuits | |
| 1339 | A2, A3, A4 |
| LM301AH | A1, A5, A6 |
| Potted Modules | |
| 4014 | A7 Balanced Modulator Sub-Module |
** - TZ-81 alternate part was the 2N5249, also defunct. 2N3904 would be a modern equivalent. Also a 2N3906 would be the modern substitute for the TZ-581 (alternate 2N5367) that ARP used as the PNP complement to the TZ-81.