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M462A

Type module
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Try it simulator & front panel · download package (zip)
Earliest dated evidence 1976|9 — title block date
Evidence "OCT 76" on 1976 - M462A - DOC - 462-02-002 - EQUALIZER MODULE SCHEMATIC.png
Confidence high
All years found 1976|9, 1978|11, 1988|21, 1990|23, 2005|38
Used in jobs 76045 (1976|9), 880651 (1988|21), 900438 (1990|23), WBSStSeriesStereoConsole
Variants M462, M462B, M462C
Folder DOCUMENTS/Done/Done - L2042 Console
Folder DOCUMENTS/Internal and Eng Notes and drawings/WBS sales brochures papers
Folder DOCUMENTS/RECENT SCANS/WBSps.ca 20210315 - Large dwg - Needs rename

Connections and circuit (ideal SPICE model)

Drawn live from its RTO-144 connections: run the generator, turn the gain, watch the VU. Open the netlist to see how the model is built.

Pinout & connections

Each contact as its own documents name it: 8 named (8 high confidence). An empty slot is a contact no page names. Hover a contact for its source; the table under the drawing lists them.

CONNECTOR P2 · 1–22NUMBERED SIDEP2-1: EQ IN LEFT audio in · confidence high rto-144 · M462A.rto144.json, p. 11EQ IN LEFT +INP2-2: EQ IN LEFT audio in · confidence high rto-144 · M462A.rto144.json, p. 12EQ IN LEFT −IN34567891011121314P2-15: EQ OUT LEFT audio out · confidence high rto-144 · M462A.rto144.json, p. 115EQ OUT LEFT +OUTP2-16: EQ OUT LEFT audio out · confidence high rto-144 · M462A.rto144.json, p. 116EQ OUT LEFT −OUT1718P2-19: -25 V power rail · confidence high rto-144 · M462A.rto144.json, p. 119-25 VPWRP2-20: COMMON ground / common · confidence high rto-144 · M462A.rto144.json, p. 120COMMONGNDP2-21: +25 V power rail · confidence high rto-144 · M462A.rto144.json, p. 121+25 VPWRP2-22: CHASSIS ground / common · confidence high rto-144 · M462A.rto144.json, p. 122CHASSISGND
KEYIN audio inOUT audio outPWR power railGND ground / commonhigh: sheet
M462A-25 V P2-19+25 V P2-21M462AEQ IN LEFTP2-1·P2-2EQ OUT LEFTP2-15·P2-16COMMON P2-20CHASSIS P2-22CONNECTED TO · CONSOLES & JOBS (4)76045CFTO · 1976|9880651TVO M1204B · 1988|21900438CHIN Radio · 1990|23WBSStSeriesStereoConsoleconsole / jobMADE OF · SUB-ASSEMBLIES (4)4-111Equalizer Filter Component …4-126Equalizer Filter Component …4-131M4-131X / RELAY MODULE SCHE…8-109Booster Amplifier Component…DRAWN WITH · MODULES (8)M462Bon 44 drawings with itM464on 40 drawings with itM467on 40 drawings with itM462on 40 drawings with itM466on 27 drawings with itM466Mon 27 drawings with itM605on 13 drawings with itM624on 13 drawings with it

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

Pin evidence — 8 contacts
PinSignalKindConfidenceRead fromSource
P2-1EQ IN LEFT
also: EQ IN RIGHT (rto-144)
audio inhighrto-144M462A.rto144.json, p. 1
P2-2EQ IN LEFT
also: EQ IN RIGHT (rto-144)
audio inhighrto-144M462A.rto144.json, p. 1
P2-15EQ OUT LEFT
also: EQ OUT RIGHT (rto-144)
audio outhighrto-144M462A.rto144.json, p. 1
P2-16EQ OUT LEFT
also: EQ OUT RIGHT (rto-144)
audio outhighrto-144M462A.rto144.json, p. 1
P2-19-25 Vpower railhighrto-144M462A.rto144.json, p. 1
P2-20COMMON
also: COMMON (rto-144)
ground / commonhighrto-144M462A.rto144.json, p. 1
P2-21+25 Vpower railhighrto-144M462A.rto144.json, p. 1
P2-22CHASSISground / commonhighrto-144M462A.rto144.json, p. 1

Pictures

1976 - DOC - 462-02-002 - EQUALIZER MODULE SCHEMATIC.png1974 - M462A - 3 BAND PROGRAM EQUALIZER 2.jpg1974 - M462A - 3 BAND PROGRAM EQUALIZER.jpg1974 - M462A - 462-02-002.jpg1974 - M462A - EQ _5667.jpg1974 - M462A - EQ _5668.jpg1974 - M462A - EQ _5669.jpg1974 - M462A - EQ _5670.jpg1974 - M462A - EQ _5671.jpg1974 - M462A - EQ _5672.jpg1974 - M462A - EQ _5673.jpg1974 - M462A - EQ _5674.jpg1974 - M462A - EQ _5675.jpg1974 - M462A - EQ _5676.jpg1974 - M462A - EQ _5677.jpg1974 - M462A - EQ _5678.jpg1974 - M462A - EQ _5679.jpg1974 - M462A - EQ-2.jpg1974 - M462A - EQ-2_small.jpg1974 - M462A - P1 - Cover.jpg1974 - M462A - P2 - 1-1.jpg1974 - M462A - P3 - 3-1.jpg1974 - M462A - P4 - 3-2.jpg1974 - M462A - P5 - Fornt Panel.jpg1974 - M462A - P6 - Pin Out.jpg1974 - M462A - file.jpg1974 - M462A - wbsps - module - m462a equalizer 001_small.jpg1974 - M462A - wbsps - module - m462a equalizer 002_small.jpg1974 - M462A - wbsps - module - m462a equalizer 004.jpg1974 - M462A - wbsps - module - m462a equalizer 004_small.jpg1974 - M462A - wbsps - module - m462a equalizer 005.jpg1974 - M462A - wbsps - module - m462a equalizer 005_small.jpg1974 - M462A - wbsps - module - m462a equalizer 006.jpg1974 - M462A - wbsps - module - m462a equalizer 006_small.jpg1974 - M462A - wbsps - module - m462a equalizer 007.jpg1974 - M462A - wbsps - module - m462a equalizer 007_small.jpg1974 - M462A - wbsps - module - m462a equalizer 008.jpg1974 - M462A - wbsps - module - m462a equalizer 008_small.jpg1974 - M462A - wbsps - module - m462a equalizer 009.jpg1974 - M462A - wbsps - module - m462a equalizer 009_small.jpg1974 - M462A - wbsps - module - m462a equalizer 010.jpg1974 - M462A - wbsps - module - m462a equalizer 010_small.jpg1974 - M462A - wbsps - module - m462a equalizer 011.jpg1974 - M462A - wbsps - module - m462a equalizer 011_small.jpg1974 - M462A - wbsps - module - m462a equalizer 012.jpg1974 - M462A - wbsps - module - m462a equalizer 012_small.jpg19xx - DOC - L2042 - P05.jpg19xx - DOC - 462-04-006 - EQUALIZER MODULE FRONT PANEL ISSU.jpg19xx - DOC - WBS sales 10.jpg19xx - DOC - WBS sales 11.jpg19xx - DOC - WBS sales 8.jpg19xx - DOC - WBS sales 9.jpg19xx - DOC - WBSps.ca -2021-3-15-19-3-51 (7).jpg19xx - DOC - 006.jpg19xx - DOC - 010.jpg19xx - DOC - 014.jpg19xx - DOC - 025.jpg1988 - 880651 - 8.jpg1990 - 900438 - 900438-04-001 - MASTER MSTRI MOD ISELECTORS SEL LINE MODULES IMOD.jpg1974 - M462 - WBS test procedures 1.jpeg1974 - M462 - WBS test procedures 2.jpeg1974 - M462 - convert M522.jpg1974 - M462 - to M522 b.jpg

Price history

Year Kind Price Listed as Effective Source
2005|38 used market value 100.00 M462A Equalizer wbsps - website ARCHIVE/WBSPS 2008/ARCHIVE/old website/PriceGuide.htm
2006|39 used market value 100.00 M462A Equalizer wbsps - website ARCHIVE/WBSPS 2008/ARCHIVE/jan 2006 shell/priceguide.htm

Dates found in the documents

Year Kind Text File
1976|9 title-block date DATE oct 76 1976 - DOC - 462-02-002 - EQUALIZER MODULE SCHEMATIC.png
1976|9 title-block date DATE oct 76 1976 - M462A - DOC - 462-02-002 - EQUALIZER MODULE SCHEMATIC.png

Physical manual inventory

Item Location Status Scanned
M462A EQ Module - User Guide PDF - Already scanned

Documents (2)

Year File
1974|7 1974 - M462A - EQ Module - User Guide (2).pdf note
1974|7 1974 - M462A - EQ Module - User Guide.pdf note

Photos & scans (98)

Year File
1974|7 1974 - M462A - 3 BAND PROGRAM EQUALIZER 2.jpg note
1974|7 1974 - M462A - 3 BAND PROGRAM EQUALIZER.jpg note
1974|7 1974 - M462A - 462-02-002.jpg note
1974|7 1974 - M462A - EQ _5667.jpg note
1974|7 1974 - M462A - EQ _5668.jpg note
1974|7 1974 - M462A - EQ _5669.jpg note
1974|7 1974 - M462A - EQ _5670.jpg note
1974|7 1974 - M462A - EQ _5671.jpg note
1974|7 1974 - M462A - EQ _5672.jpg note
1974|7 1974 - M462A - EQ _5673.jpg note
1974|7 1974 - M462A - EQ _5674.jpg note
1974|7 1974 - M462A - EQ _5675.jpg note
1974|7 1974 - M462A - EQ _5676.jpg note
1974|7 1974 - M462A - EQ _5677.jpg note
1974|7 1974 - M462A - EQ _5678.jpg note
1974|7 1974 - M462A - EQ _5679.jpg note
1974|7 1974 - M462A - EQ-2.jpg note
1974|7 1974 - M462A - EQ-2_small.jpg note
1974|7 1974 - M462A - P1 - Cover.jpg note
1974|7 1974 - M462A - P2 - 1-1.jpg note
1974|7 1974 - M462A - P3 - 3-1.jpg note
1974|7 1974 - M462A - P4 - 3-2.jpg note
1974|7 1974 - M462A - P5 - Fornt Panel.jpg note
1974|7 1974 - M462A - P6 - Pin Out.jpg note
1974|7 1974 - M462A - file.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 001_small.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 002_small.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 004.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 004_small.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 005.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 005_small.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 006.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 006_small.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 007.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 007_small.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 008.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 008_small.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 009.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 009_small.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 010.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 010_small.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 011.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 011_small.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 012.jpg note
1974|7 1974 - M462A - wbsps - module - m462a equalizer 012_small.jpg note
1976|9 1976 - DOC - 462-02-002 - EQUALIZER MODULE SCHEMATIC.png note
1976|9 1976 - M462A - DOC - 462-02-002 - EQUALIZER MODULE SCHEMATIC.png note
? 19xx - DOC - L2042 - P05.jpg note
? 19xx - DOC - 462-04-006 - EQUALIZER MODULE FRONT PANEL ISSU.jpg note
? 19xx - DOC - WBS sales 10.jpg note
? 19xx - DOC - WBS sales 11.jpg note
? 19xx - DOC - WBS sales 8.jpg note
? 19xx - DOC - WBS sales 9.jpg note
? 19xx - DOC - WBSps.ca -2021-3-15-19-3-51 (7).jpg note
? 19xx - DOC - 006.jpg note
? 19xx - DOC - 010.jpg note
? 19xx - DOC - 014.jpg note
? 19xx - DOC - 025.jpg note
? 19xx - M605 - DOC - L2042 - P05.jpg note
? 19xx - M612 - DOC - L2042 - P05.jpg note
? 19xx - M621 - DOC - L2042 - P05.jpg note
? 19xx - M466 - DOC - 006.jpg note
? 19xx - M466 - DOC - 010.jpg note
? 19xx - M466 - DOC - 014.jpg note
? 19xx - M466M - DOC - 006.jpg note
? 19xx - M466M - DOC - 010.jpg note
? 19xx - M466M - DOC - 014.jpg note
? 19xx - M467 - DOC - 006.jpg note
? 19xx - M467 - DOC - 010.jpg note
? 19xx - M467 - DOC - 014.jpg note
? 19xx - M467 - DOC - L2042 - P05.jpg note
? 19xx - M462 - DOC - 006.jpg note
? 19xx - M462 - DOC - 010.jpg note
? 19xx - M462 - DOC - 014.jpg note
? 19xx - M462 - DOC - L2042 - P05.jpg note
? 19xx - M462A - DOC - 006.jpg note
? 19xx - M462A - DOC - 010.jpg note
? 19xx - M462A - DOC - 014.jpg note
? 19xx - M462A - DOC - 025.jpg note
? 19xx - M462A - DOC - 462-04-006 - EQUALIZER MODULE FRONT PANEL ISSU.jpg note
? 19xx - M462A - DOC - L2042 - P05.jpg note
? 19xx - M462A - DOC - WBS sales 10.jpg note
? 19xx - M462A - DOC - WBS sales 11.jpg note
? 19xx - M462A - DOC - WBS sales 8.jpg note
? 19xx - M462A - DOC - WBS sales 9.jpg note
? 19xx - M462A - DOC - WBSps.ca -2021-3-15-19-3-51.jpg note
? 19xx - M462B - DOC - 006.jpg note
? 19xx - M462B - DOC - 010.jpg note
? 19xx - M462B - DOC - 014.jpg note
? 19xx - M462B - DOC - 025.jpg note
? 19xx - M462B - DOC - L2042 - P05.jpg note
? 19xx - M464 - DOC - 006.jpg note
? 19xx - M464 - DOC - 010.jpg note
? 19xx - M464 - DOC - 014.jpg note
? 19xx - M464 - DOC - L2042 - P05.jpg note
? 19xx - M624 - DOC - L2042 - P05.jpg note
? 19xx - M625A - DOC - L2042 - P05.jpg note
? 19xx - M457 - DOC - L2042 - P05.jpg note

Sub-assemblies & parts used (4)

Item What Family Year How we know
4-111 Equalizer Filter Component Assembly Sub-assemblies (n-nnn) 1974|7 named in its manual
4-126 Equalizer Filter Component Assembly Sub-assemblies (n-nnn) 1972|5 named in its manual
4-131 M4-131X / RELAY MODULE SCHEMATIC Sub-assemblies (n-nnn) 1976|9 named in its manual
8-109 Booster Amplifier Component Layout Sub-assemblies (n-nnn) 1974|7 named in its manual

Consoles & jobs it is connected to (4)

Their own drawings name this module.

Job Year Drawing Page
76045 1976|9 1976 - 76045 - 01-001.pdf 1
880651 1988|21 1988 - 880651 - 8.jpg 1
900438 1990|23 1990 - 900438 - 900438-04-001 - MASTER MSTRI MOD ISELECTORS SEL LINE MODULES IMOD.jpg 1
WBSStSeriesStereoConsole 1985 - ST - Binder1.pdf 6

Named in other drawings & documents (6)

File Page
19xx - RTO-144 - Module RTO-144 Jumper calculator.xlsx 1
1974 - M462 - WBS test procedures 1.jpeg 1
1974 - M462 - WBS test procedures 2.jpeg 1
1974 - M462 - convert M522.jpg 1
1974 - M462 - to M522 b.jpg 1
1978 - M462 - M562 - Equalizer.pdf 34

From the manuals

Each manual split into its sections. Text that is the same in many Ward-Beck manuals (warranty, address, standard notes) is kept once on the Boilerplate page and linked.

Maintenance & alignment (2)

Adjustment — 153 words · 19xx - M462A - DOC - 462-04-006 - EQUALIZER MODULE FRONT PANEL ISSU.jpg, page 1

Lng the Q-factor of the PEAK TNG from lows vary- ter for va lues Q€*Ht FREQUENCY sectionron Boosticut control RIL : Concinuous variable to +15 Sets os$ mid frequency content of the program ter ia with reference the nomina leve 50 100 200 300 LoH FREQUENCY section FREQUENCY ADJUSTHENT controi Rio _ Continuous | variab from 400 Hz The ca ibration def [ nes the corner cupoont From the mxImum ava lab le SHELVING BOOST 400 Low FREQUENCY section BoosT/CuT control Ri6 ContinuousTy variable from +15 Sets gain or los5 low frequency content Reveh the Program materia with reference the nonina EQUALIZER INSERT switch SEQuALWzer When depressed, this switch inserts the M46 24 Into the gna path and activates associated LED Hhen released che unequa l ized input igna is bypassed directly to the output {10/77 ISSU DATE REDrAWN Revision WBS WARD-EZCK BYSTER DRNRKucIEYC ENG_ CKD.

{h App: 2h IScALE M462A EQUALIZER MODULE

Adjustment — 131 words · 1974 - M462A - P5 - Fornt Panel.jpg, page 1

control Rio, RI Continuous Y variable from 25 to 400 Hz . The cO ibration defines the dB corner po Int from the max iMum ava lab le SHELVING Boost or cut of 15 dB . Mo0 LF Lox FREQUENcY section BoosT/cUT controi R16 Cont nuous varlable from 15 dB {0 15 dB . Sets 92in or Tos $ of Tow frequency content of the progrom mater Ial with reference co the nomina level .

EQUALIZER | NSERT switch Sw3 : When depressed, chis switch nserts the M4624 EQUALIZER Into the s Igna path and act ivates assoc lated LED. When re leased the unequal ized Input signa Ts bypassed directly t0 the output. [10/77 Lssuedate REDRAWN REviSiON WBS WARD-BrCK syatentr DRNPXNLey (eNG, cko Rb ApR EEiL IScAL M462A EQUALIZER MODULE

Drawings (4)

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.

462-02-002 · schematic · 1974|7
1974 - M462A - 462-02-002viewer
462-02-002 · schematic · 1976|9
Equalizer Module Schematicviewer
462-04-006 · connector layout
Equalizer Module Front Panel Issuviewer

Read from the drawing title blocks.

Drawing Title Date Drawn by Checked by Iss. Source
462-02-002 Equalizer Module Schematic 1976|9 file
462-02-002 file
462-04-006 Activates Assoc When Eased The Uneque Zed Nput BL file p.5
462-04-006 Equalizer Module Front Panel Issu U file
An archive by Anthony Peter Kuzub · WBSps.Kuzub.com · WBSps.ca
generated from M462A.md