M460B · RTO-144 Connections

PREAMP · series S460 · 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	MIC-IN	in	P1-1	P1-A	P1-1.A.1.P	P1-A.A.1.N
A2	LINE-IN	in	P1-17	P1-U	P1-17.A.2.P	P1-U.A.2.N
A3	BUS-RIGHT-OUT	out	P2-5	P2-E	P2-5.A.3.P	P2-E.A.3.N
A4	DIRECT OUT	out	P2-12	P2-N	P2-12.A.4.P	P2-N.A.4.N
B1	INSERT-OUT	out	P1-22	P1-Z	P1-22.B.1.P	P1-Z.B.1.N
B2	INSERT-RETURN	in	P1-21	P1-Y	P1-21.B.2.P	P1-Y.B.2.N
B3	CH-ON-SWITCH OUT	out	P1-20	P1-X	P1-20.B.3.P	P1-x.B.3.N
B4	FADER-RETURN	in	P1-19	P1-W	P1-19.B.4.P	P1-W.B.4.N

Bus connections

Bus	Dir	Signal	Pin +	Pin −
LEFT	out	BUS-LEFT-OUT	P2-3	P2-C
RIGHT	out	BUS-RIGHT-OUT	P2-5	P2-E
SUB1-RS1	out	BUS-SUB1-RS1-OUT	P1-9	P1-K
SUB2-RS2	out	BUS-SUB2-RS2-OUT	P1-8	P1-J
AUX1-FB1	out	BUS-FB1-OUT	P1-5	P1-E
AUX2-FB2	out	BUS-FB2-OUT	P1-4	P1-E
AUX8-PA	out	BUS-AUX8-PA-OUT	P1-3	P1-C
SOLO-CUE	out	BUS-SOLO-CUE-OUT	P1-12	P1-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
VCC-LOGIC	NEW	24	0.1	P2-Y	P2-18	—

Jumpers

Function	Designation	From	To
CH ON LAMP	JMP.Z.W	P2-Z	P2-W
CH ON GND	JMP.X.18	P2-X	P2-18
24V Jumper	JMP.Y.21	P2-Y	P2-21
CH ON GND	JMP.3	P2-20	P2-18
Insert +	JMP.22.21	P1-22	P1-21
Insert -	JMP.Z.Y	P1-Z	P1-Y
Fader +	JMP.20.19	P1-20	P1-19
Fader -	JMP.X.W	P1-X	P1-W

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

M460B RTO-144 connections

Drn.

make_rto144.py

Date

Oct 17 2026