M457A — Pre Mixer Master Module
| Type | module |
| Category | ROUTING |
| Try it | simulator & front panel · download package (zip) |
| Earliest dated evidence | 1975|8 — title-block date |
| Evidence | "DATE FEB 75" in PUBLIC/Manuals + tech DOCUMENTS/Modules/M457A - Pre Mixer Master Module.pdf |
| Confidence | high |
| All years found | 1975|8, 1977|10 |
| Used in jobs | WBSL2642 |
| Variants | M457 |
| Folder | DOCUMENTS/RECENT SCANS/WBSps.ca 20210317 - Small 11X17 drawings |
| Folder | Modules/ROUTING/M457A |
Connections and circuit (ideal SPICE model)
Inputs, outputs, power and control as its own documents name them (no RTO-144 sheet for it: pin numbers only where the page gives them). Run the generator, turn the gain, watch the VU.
Pinout & connections
Each contact as its own documents name it: 40 named (40 medium confidence). An empty slot is a contact no page names. Hover a contact for its source; the table under the drawing lists them.
pinout (SVG) · connections (SVG) · pins (JSON)
Pin evidence — 40 contacts
| Pin | Signal | Kind | Confidence | Read from | Source |
|---|---|---|---|---|---|
| A | IC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 1 of the drawing, left of the pin column” |
| 1 | IC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 1 of the drawing, right of the pin column” |
| 2 | EXT B IN | audio in | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 2 of the drawing, right of the pin column” |
| C | IC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 3 of the drawing, left of the pin column” |
| 3 | IC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 3 of the drawing, right of the pin column” |
| E | IC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 5 of the drawing, left of the pin column” |
| 5 | IC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 5 of the drawing, right of the pin column” |
| F | B MIX IN | audio in | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 6 of the drawing, left of the pin column” |
| 6 | B MIX IN | audio in | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 6 of the drawing, right of the pin column” |
| H | NC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 7 of the drawing, left of the pin column” |
| 7 | NC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 7 of the drawing, right of the pin column” |
| J | A MIX IN | audio in | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 8 of the drawing, left of the pin column” |
| K | NC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 9 of the drawing, left of the pin column” |
| 9 | NC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 9 of the drawing, right of the pin column” |
| L | IC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 10 of the drawing, left of the pin column” |
| 10 | IC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 10 of the drawing, right of the pin column” |
| M | IC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 11 of the drawing, left of the pin column” |
| 11 | IC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 11 of the drawing, right of the pin column” |
| N | IC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 12 of the drawing, left of the pin column” |
| 12 | IC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 12 of the drawing, right of the pin column” |
| P | NC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 13 of the drawing, left of the pin column” |
| 13 | NC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 13 of the drawing, right of the pin column” |
| R | NC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 14 of the drawing, left of the pin column” |
| 14 | NC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 14 of the drawing, right of the pin column” |
| S | NC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 15 of the drawing, left of the pin column” |
| 15 | NC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 15 of the drawing, right of the pin column” |
| T | MIX B OUT | audio out | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 16 of the drawing, left of the pin column” |
| 16 | MIX B OUT | audio out | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 16 of the drawing, right of the pin column” |
| U | MIX A OUT | audio out | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 17 of the drawing, left of the pin column” |
| 17 | MIX A OUT | audio out | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 17 of the drawing, right of the pin column” |
| V | NC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 18 of the drawing, left of the pin column” |
| 18 | NC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 18 of the drawing, right of the pin column” |
| W | NC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 19 of the drawing, left of the pin column” |
| 19 | 25V | named, kind not clear | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 19 of the drawing, right of the pin column” |
| X | NC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 20 of the drawing, left of the pin column” |
| 20 | COM | ground / common | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 20 of the drawing, right of the pin column” |
| Y | NC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 21 of the drawing, left of the pin column” |
| 21 | +25V | power rail | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 21 of the drawing, right of the pin column” |
| Z | NC | not / internally connected | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 22 of the drawing, left of the pin column” |
| 22 | CHASSIS | ground / common | medium | drawing rows | 1975 - M457A - 457-04-004 - PRE-MIXER MASTER …, p. 1 “row 22 of the drawing, right of the pin column” |
Pictures
1975 - DOC - 457-02-002 - PRE-MIXER MASTER MODULE SCHEMATIC.png
1975 - M457A - 457-02-002 - NOIES RIO USE.jpg
1975 - M457A - 461-03-015 - DUAL BOOSTER AMPLIFIER.jpg
1975 - M457A - 5-101-02-003 - DUAL BOOSTER AMPLIFIER.jpg
1977 - M457A - P002.jpg
1975 - M457A - 457-01-002 - PRE- MIXER MASTER MODULE.jpg
1975 - M457A - 457-04-004 - PRE-MIXER MASTER MODULE CONNECTOR REAR VIEW CALE.jpg
1975 - M457A - 457-04-006 - ENG KUVBET PRE-MIXER MASTER MODULE.jpg
1975 - M457A - 5-106-06-002 - PRE-MIXER MASTER MODUE ECALE LAYOUT.jpg
1975 - M457A - P001 - Title Page.jpg
1975 - M457A - P003 - 1-1.jpg
1975 - M457A - P004 - 2-1.jpg
1975 - M457A - P005 - 3-1.jpg
1975 - M457A - P006 - 3-2.jpg
1975 - M457A - P007 - 3-3.jpg
1975 - M457A - P008 - 5-101.jpg
1975 - M457A - P009 - 5-101-1-1.jpg
1975 - M457A - P010 - 5-101-1-2.jpg
1975 - M457A - P011 - 5-101B-2-1.jpg
1975 - M457A - P012 - 5-101B-2-2.jpg
1975 - M457A - P013 - 5-101B-2-3.jpg
1977 - L2642 - $_57-3.jpg
1975 - 457-02-002 - PRE-MIXER MASTER MODULE SCHEMATIC - DRN DM - ISS 3.jpg
1975 - M457 - P6.jpg
1977 - 457-01-002 - PRE-MIXER MASTER MODULE FUNCTIONAL DIAGRAM - DRN DB - ENG RKB - ISS 2.jpgPrice history
| Year | Kind | Price | Listed as | Effective | Source |
|---|---|---|---|---|---|
| 2005|38 | used market value | 10.00 | M457A Pre-Mixer Master | wbsps - website ARCHIVE/WBSPS 2008/ARCHIVE/old website/PriceGuide.htm | |
| 2006|39 | used market value | 10.00 | M457A Pre-Mixer Master | wbsps - website ARCHIVE/WBSPS 2008/ARCHIVE/jan 2006 shell/priceguide.htm |
Dates found in the documents
| Year | Kind | Text | File |
|---|---|---|---|
| 1975|8 | title-block date | DATE MAR 75 |
1975 - DOC - 457-02-002 - PRE-MIXER MASTER MODULE SCHEMATIC.png |
| 1975|8 | title-block date | DATE MAR 75 |
1975 - M457A - 457-02-002 - NOIES RIO USE.jpg |
| 1975|8 | title-block date | DATE FEB 75 |
1975 - M457A - 461-03-015 - DUAL BOOSTER AMPLIFIER.jpg |
| 1975|8 | month & year | JAN 75 |
1975 - M457A - 5-101-02-003 - DUAL BOOSTER AMPLIFIER.jpg |
| 1975|8 | title-block date | DATE MAR 75 |
1975 - M457A - DOC - 457-02-002 - PRE-MIXER MASTER MODULE SCHEMATIC.png |
| 1975|8 | title-block date | DATE FEB 75 |
1975 - M457A - Pre Mixer Master Module.pdf |
| 1975|8 | title-block date | DATE JAN 75 |
1975 - M457A - Pre Mixer Master Module.pdf |
| 1975|8 | title-block date | DATE MAR 75 |
1975 - M457A - Pre Mixer Master Module.pdf |
| 1977|10 | manual issue date | MANUAL ISSUE #1 AUGUST 1977 |
1977 - M457A - P002.jpg |
| 1977|10 | month & year | AUGUST 1977 |
1977 - M457A - Pre Mixer Master Module.pdf |
Physical manual inventory
| Item | Location | Status | Scanned |
|---|---|---|---|
| M457A - Pre Mixer Master Module | PDF - Already scanned |
Documents (2)
| Year | File | |
|---|---|---|
| 1975|8 | 1975 - M457A - Pre Mixer Master Module.pdf | note |
| 1977|10 | 1977 - M457A - Pre Mixer Master Module.pdf | note |
Photos & scans (22)
Sub-assemblies & parts used (3)
| Item | What | Family | Year | How we know |
|---|---|---|---|---|
| 5-101 | Geb Used | Sub-assemblies (n-nnn) | 1975|8 | drawing filed with it |
| 5-106 | Pre-Mixer Master Modue Ecale Layout | Sub-assemblies (n-nnn) | drawing filed with it | |
| 10-015 | Sub-assemblies (n-nnn) | 1988|21 | named in its manual |
Parts list — board 1977 - M457A - Pre Mixer Master Module (3 parts)
From 1977 - M457A - Pre Mixer Master Module.pdf; also in timelines/data/bom.csv.
| Ref | Part | Value | Manufacturer | Mfr part no. |
|---|---|---|---|---|
| C44 | Del ete | |||
| C45 | capa~ H or 150 | ~F /6 | V | Ke~et T390E 15~M006AS |
| R1J | Oelet e |
Consoles & jobs it is connected to (1)
Their own drawings name this module.
| Job | Year | Drawing | Page |
|---|---|---|---|
| WBSL2642 | 1977 - L2642 - $_57-3.jpg | 1 |
Named in other drawings & documents (6)
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.
General description (1)
Description — 171 words · 1975 - M457A - P009 - 5-101-1-1.jpg, page 1
5-101 AMPLLELER_SERLES The 5-101 series 0 f amp | ifiers are utilized a $ plug-in uwits within certain Ward-Beck Systems 450 and 460 series modules There are two separate amplifiers per card each Eyoofd+2} an actively balanced output wi th max Mum capability of dBm , The following specifications apply to the 5-101 amp]ifiers_ UNII InPUT GAIN MAX OUIPUI 5-101 5-101A 5-101B Ba lanced 15 dB Unbalanced ( summing ) Unity Unbalanced 4!.
20 dB +25 dB m +25 dBm +25 dBm Frequency Response Noise: +0.25 dB from 30 Hz to 20 kHz . 100 dBm from 20 Hz to 20 khz Harmonic Distortion: Less than 0 . 353 ThD from 20 Hz to 20 kllz at +24 dBin output Output Impedance: Load Impedance Less than 100 ohms . 600 ohms minimum. Power Requirements +24 voIts dc 20 MA quiescent current 80 MA at +25 dBm output into 600 ohm Ioad Ambient Temperature Dimensions to 60 degrees Celsius .
3.375 " 4.125" 57" (86 mm X 105 mm 15` mmj_ 5-101-1-1
- source: 1975 - M457A - P009 - 5-101-1-1.jpg, p. 1
Drawings (15)
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.
Mixer Master Module Functional Diagramviewer
Pre-Mixer Master Module Schematic Fimishviewer
Pre-Mixer Master Module Schematicviewer
Rwise Specified Last Component Desicnationsviewer
Pre-Mixer Master Module Layoutviewer
Pre-Mixer Master Module Connector Rear View Caleviewer
Extermal Feed When Mipufeea Released Theviewer
Dual Booster Amplifier Layoutviewer
Read from the drawing title blocks.
| Drawing | Title | Date | Drawn by | Checked by | Iss. | Source |
|---|---|---|---|---|---|---|
| 457-02-002 | Noies Rio Use | 1975|8 | DM | 3 | file | |
| 457-02-002 | Pre-Mixer Master Module Schematic Fimish | 1975|8 | RLT | file p.16 | ||
| 457-02-002 | Pre-Mixer Master Module Schematic | 1975|8 | DM | 3 | file | |
| 461-03-015 | Dual Booster Amplifier | 1975|8 | DM | R SCALE | file | |
| 5-101-02-003 | Dual Booster Amplifier | 1975|8 | DM | PLL | 2 | file |
| 5-101-02-003 | Last Component Desicnations Clo Cra Eil | 1975|8 | DM | REL | file p.19 | |
| 5-101-06-003 | Red Ssmop Jcko | 1975|8 | DM | file p.20 | ||
| — | Pre- Mixer Master Module Functional Diagram | DB | file p.15 | |||
| 457-01-002 | Pre- Mixer Master Module | DB | 3 | file | ||
| 457-04-004 | Pre-Mixer Master Module Connector Rear View Cale | 2 | file | |||
| 457-04-006 | Eng Kuvbet Pre-Mixer Master Module | file | ||||
| 457-04-006 | Xer Master Module | file p.14 | ||||
| 5-101-02-003 | Last Component Slanations | 2 | file p.19 | |||
| 5-101-06-003 | Boos Tera | file p.20 | ||||
| 5-106-06-002 | Pre-Mixer Master Modue Ecale Layout | DM | RUL | file |