M470A · RTO-144 Connections
PREAMP · series L-PRE · line in 600 Ω, out 600 Ω
Rear connector
Inputs and outputs
Audio connections · RTO-144 A / B
| Port | Signal | Dir | Pin + | Pin − | Pad + | Pad − |
|---|---|---|---|---|---|---|
| A1 | LINE-IN | in | P2-1 | P2-A | P2-1.A.1.P | P2-A.A.1.N |
| A2 | MIC-IN-1 | in | P1-19 | P1-W | P1-19.A.2.P | P1-W.A.2.N |
| A3 | M2-OUT | out | P1-1 | P1-A | P1-1.A.3.P | P1-A.A.3.N |
| A4 | DIRECT OUT | out | P2-3 | P2-C | P2-3.A.4.P | P2-C.A.4.N |
| B1 | INSERT-OUT | out | P2-8 | P2-J | P2-8.B.1.P | P2-J.B.1.N |
| B2 | INSERT-RETURN | in | P2-6 | P2-F | P2-6.B.2.P | P2-F.B.2.N |
| B3 | CH-ON-SWITCH OUT | out | P2-7 | P2-H | P2-7.B.3.P | P2-H.B.3.N |
| B4 | FADER-RETURN | in | P2-5 | P2-E | P2-5.B.4.P | P2-E.B.4.N |
Bus connections
| Bus | Dir | Signal | Pin + | Pin − |
|---|---|---|---|---|
| LEFT | out | BUS-LEFT-OUT | P1-5 | P1-E |
| RIGHT | out | BUS-RIGHT-OUT | P1-1 | P1-A |
| SUB1-RS1 | out | BUS-SUB1 | P1-8 | P1-J |
| SUB2-RS2 | out | BUS-SUB2 | P1-4 | P1-D |
| SUB3-RS3 | out | BUS-SUB3 | P1-7 | P1-H |
| SUB4-RS4 | out | BUS-SUB4 | P1-3 | P1-C |
| SUB5 | out | BUS-SUB5 | P1-6 | P1-F |
| SUB6 | out | BUS-SUB6 | P1-2 | P1-B |
| AUX1-FB1 | out | BUS-AUX1 | P1-12 | P1-N |
| AUX2-FB2 | out | BUS-AUX2 | P1-11 | P1-M |
| AUX3-FB3 | out | BUS-AUX3 | P1-10 | P1-L |
| AUX4-FB4 | out | BUS-AUX4 | P1-9 | P1-K |
| SOLO-CUE | out | BUS-SOLO-CUE-OUT | P1-14 | P1-R |
| PFL | out | BUS-PFL | P1-13 | P1-P |
Power · bench PSU
| Rail | Style | Volts | Max A | Supply | Ground | Link |
|---|---|---|---|---|---|---|
| VEE-AUDIO | NEW | -25 | 0.2 | P2-19 | P2-20 | 2 |
| VCC-AUDIO | NEW | 25 | 0.2 | P2-21 | P2-20 | 1 |
| VCC-LOGIC | NEW | 24 | 0.2 | P2-Y | P2-18 | — |
Jumpers
| Function | Designation | From | To |
|---|---|---|---|
| CH ON LAMP | JMP.Z.W | P2-Z | P2-W |
| CH ON GND | JMP.2 | P2-W | P2-18 |
| 24V Jumper | JMP.Y.21 | P2-Y | P2-21 |
| CH ON GND | JMP.20.18 | P2-20 | P2-18 |
| Insert + | JMP.8.6 | P2-8 | P2-6 |
| Insert - | JMP.J.F | P2-J | P2-F |
| Fader + | JMP.7.5 | P2-7 | P2-5 |
| Fader - | JMP.H.E | P2-H | P2-E |
| EQ BYPASS | JMP.Z.22 | P1-Z | P1-22 |
Source: Ward-Beck Systems - Module RTO-144 Jumper calculator.xlsx (Database tab). Pin direction is inferred from the signal name. Verify against the module schematic before wiring.
WBS Ward-Beck Systems Ltd.
Title
M470A RTO-144 connections
Drn.
make_rto144.py
Date
Oct 17 2026