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M480A — MIXER BUSSES IGV
Type module
Category INPUT-PRE-AMPS
Try it simulator & front panel · download package (zip)
Earliest dated evidence 2020|53 — title block date
Evidence "AUG 20" on 1975 - M480A - MIXER BUSSES IGV.jpg
Confidence high
All years found 2020|53
Variants M480, M480B, M480C
Folder DOCUMENTS/RECENT SCANS/WBSps.ca 20210317 - Large pile of D
Folder Modules/INPUT-PRE-AMPS/M480A

Connections

What it is made of and what it is part of.

Pinout & connections

No page of its own numbers M480A's contacts: these are its variant M480C's, drawn faded — not confirmed for M480A.

EDGE CONNECTOR · A–YLETTERED SIDE · AS ON M480CA: MIC IN B audio in · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 1AMIC IN B −INBCD: AUX audio bus / pair · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 1DAUX −BUSE: CUE SOLO audio bus / pair · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 1ECUE SOLO −BUSF: M1 OUT audio out · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 1FM1 OUT −OUTH: M2 OUT audio out · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 1HM2 OUT −OUTJKL: FADER RETURN audio in · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 1LFADER RETURN +INMNP: LINE IN B audio in · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 1PLINE IN B −INRST: FADER SEND audio out · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 1TFADER SEND −OUTUVWXY: +48 V power rail · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 1Y+48 VPWREDGE CONNECTOR · 1–21NUMBERED SIDE · AS ON M480C1: MIC IN B audio in · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 11MIC IN B +IN234: AUX audio bus / pair · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 14AUX +BUS5: CUE SOLO audio bus / pair · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 15CUE SOLO +BUS6: M1 OUT audio out · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 16M1 OUT +OUT7: M2 OUT audio out · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 17M2 OUT +OUT8910: FADER RETURN audio in · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 110FADER RETURN −IN111213: LINE IN B audio in · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 113LINE IN B +IN141516: FADER SEND audio out · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 116FADER SEND +OUT171819: -25 V power rail · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 119-25 VPWR20: COMMON ground / common · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 120COMMONGND21: +25 V power rail · confidence variant (from a variant) rto-144 · M480C.rto144.json, p. 121+25 VPWR
KEYIN audio inOUT audio outBUS audio bus / pairPWR power railGND ground / commonvariant
M480A — MIXER BUSSES IGVpins as on its variant M480C (not confirmed for M480A)-25 V 19+48 V Y+25 V 21M480AMIXER BUSSESIGVMIC IN BA·1FADER RETURNL·10LINE IN BP·13AUXD·4CUE SOLOE·5M1 OUTF·6M2 OUTH·7FADER SENDT·16COMMON 20MADE OF · SUB-ASSEMBLIES (2)60-1060-10 INPUT TRANSFORMER60-1160-11 / INPUT TRANSFORMER

pinout (SVG) · connections (SVG) · pins (JSON)

Pin evidence — 20 contacts
PinSignalKindConfidenceRead fromSource
AMIC IN Baudio invariantrto-144M480C.rto144.json, p. 1
1MIC IN Baudio invariantrto-144M480C.rto144.json, p. 1
DAUXaudio bus / pairvariantrto-144M480C.rto144.json, p. 1
4AUXaudio bus / pairvariantrto-144M480C.rto144.json, p. 1
ECUE SOLOaudio bus / pairvariantrto-144M480C.rto144.json, p. 1
5CUE SOLOaudio bus / pairvariantrto-144M480C.rto144.json, p. 1
FM1 OUTaudio outvariantrto-144M480C.rto144.json, p. 1
6M1 OUTaudio outvariantrto-144M480C.rto144.json, p. 1
HM2 OUTaudio outvariantrto-144M480C.rto144.json, p. 1
7M2 OUTaudio outvariantrto-144M480C.rto144.json, p. 1
LFADER RETURNaudio invariantrto-144M480C.rto144.json, p. 1
10FADER RETURNaudio invariantrto-144M480C.rto144.json, p. 1
PLINE IN Baudio invariantrto-144M480C.rto144.json, p. 1
13LINE IN Baudio invariantrto-144M480C.rto144.json, p. 1
TFADER SENDaudio outvariantrto-144M480C.rto144.json, p. 1
16FADER SENDaudio outvariantrto-144M480C.rto144.json, p. 1
19-25 Vpower railvariantrto-144M480C.rto144.json, p. 1
20COMMONground / commonvariantrto-144M480C.rto144.json, p. 1
Y+48 Vpower railvariantrto-144M480C.rto144.json, p. 1
21+25 Vpower railvariantrto-144M480C.rto144.json, p. 1

Pictures

1975 - M480A - MIXER BUSSES IGV.jpg1975 - M480A - Schematic - Back Flipped (2).jpg1975 - M480A - Schematic - Back Flipped (3).jpg1975 - M480A - Schematic - Back Flipped.jpg1975 - M480A - Schematic - Diff A and NOT A.jpg1975 - M480A - Schematic Front 001.jpg1975 - M480A - Schematic Front 002.jpg19xx - DOC - HIGH LOW PRESENCE.jpg

Photos & scans (9)

Year File
1975|8 1975 - M480A - MIXER BUSSES IGV.jpg note
1975|8 1975 - M480A - Schematic - Back Flipped (2).jpg note
1975|8 1975 - M480A - Schematic - Back Flipped (3).jpg note
1975|8 1975 - M480A - Schematic - Back Flipped.jpg note
1975|8 1975 - M480A - Schematic - Diff A and NOT A.jpg note
1975|8 1975 - M480A - Schematic Front 001.jpg note
1975|8 1975 - M480A - Schematic Front 002.jpg note
? 19xx - DOC - HIGH LOW PRESENCE.jpg note
? 19xx - M480A - DOC - HIGH LOW PRESENCE.jpg note

Sub-assemblies & parts used (2)

Item What Family Year How we know
60-10 60-10 INPUT TRANSFORMER Input transformers (60-n) 1975|8 named in its manual
60-11 60-11 / INPUT TRANSFORMER Input transformers (60-n) 1983|16 named in its manual

Drawings (2)

Each scan with its trace laid over it: the slider runs from the scan to the vector drawing. Click one to see it large and save it as SVG, DXF, KiCad, PDF or PowerPoint.

— · 2020|53
Mixer Busses Igvviewer
— · 2020|53
High Low Presenceviewer

Read from the drawing title blocks.

Drawing Title Date Drawn by Checked by Iss. Source
— Mixer Busses Igv 2020|53 PWC file
— High Low Presence 2020|53 file
An archive by Anthony Peter Kuzub · WBSps.Kuzub.com · WBSps.ca
generated from M480A.md