M473A · RTO-144 Connections
M473A Submaster Module
Rear connector
Inputs and outputs
Audio connections · RTO-144 A / B
| Port | Signal | Dir | Pin + | Pin − | Pad + | Pad − |
|---|---|---|---|---|---|---|
| A1 | Summing Input | in | P2-1 | P2-A | 1.A.1.P | A.A.1.N |
| A3 | Meter Out | out | P2-17 | P2-T | 17.A.3.P | T.A.3.N |
| A4 | Direct Out | out | P2-15 | P2-S | 15.A.4.P | S.A.4.N |
| B1 | Insert Send | out | P2-14 | P2-8 | 14.B.1.P | 8.B.1.N |
| B2 | Insert Return | in | P2-R | P2-J | R.B.2.P | J.B.2.N |
Power · bench PSU
| Rail | Style | Volts | Max A | Supply | Ground | Link |
|---|---|---|---|---|---|---|
| VEE-AUDIO | NEW | -25 | 0.1 | P2-19 | P2-20 | 2 |
| VCC-AUDIO | NEW | 25 | 0.2 | P2-21 | P2-20 | 1 |
Jumpers
| Function | Designation | From | To |
|---|---|---|---|
| 24V Jumper | JMP.Y.21 | P2-Y | P2-21 |
| CH ON GND | JMP.20.18 | P2-20 | P2-18 |
| Insert + | JMP.22.21 | P2-22 | P2-21 |
| Insert - | JMP.Z.Y | P2-Z | P2-Y |
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
M473A RTO-144 connections
Drn.
make_rto144.py
Date
Oct 17 2026