M605C — Audio Distribution Amplifier
| Type | module |
| Category | AMPLIFIERS |
| Try it | simulator & front panel · download package (zip) |
| Earliest dated evidence | 1971|4 — estimate from a dated variant |
| Evidence | from M605 |
| Confidence | family |
| Variants | M605, M605A |
| Folder | DOCUMENTS/Internal and Eng Notes and drawings/Quotations brochures and misc papers |
| Folder | Modules/AMPLIFIERS/M605C |
Connections
What it is made of and what it is part of.
Pinout & connections
No page of its own numbers M605C's contacts: these are its variant M605A's, drawn faded — not confirmed for M605C.
pinout (SVG) · connections (SVG) · pins (JSON)
Pin evidence — 8 contacts
| Pin | Signal | Kind | Confidence | Read from | Source |
|---|---|---|---|---|---|
| 1 | AUD J0 INPUT A PPEARS AT PINS | audio in | variant | prose | 19xx - DOC - US Sales Brochure pg 17.jpg, p. 1 “Input The aud j0 input a ppears at Pins 1 and 9 0 f the modu ]e connector a nd enters the 8-116 amp] ifier card at pins 1 and 2 .” |
| 2 | AUD J0 INPUT A PPEARS AT PINS | audio in | variant | prose | 19xx - DOC - US Sales Brochure pg 17.jpg, p. 1 “Input The aud j0 input a ppears at Pins 1 and 9 0 f the modu ]e connector a nd enters the 8-116 amp] ifier card at pins 1 and 2 .” |
| 6 | AMPIFIER OUTPUT ORIGINAT ING FROM PINS 18 | audio out | variant | prose | 19xx - DOC - US Sales Brochure pg 17.jpg, p. 1 “The amp]ifier output originat ing from pins 18 and 19 0 f the amp] ifier card 8 - 116 is connected to the DIRECT output a t pins 6 and 14 0…” |
| 7 | THREE LED INDICATOR CIRCUITS | control / tally | variant | prose | 19xx - DOC - US Sales Brochure pg 19.jpg, p. 1 “WAAD-BECK SysteMs LTD_ CIRCUIT DESCRIPTION M605A AUDI0 DISTRIBUTION AMPLIFIER The three LED indicator circuits are packaged separately on a…” |
| 14 | AMPIFIER OUTPUT ORIGINAT ING FROM PINS 18 | audio out | variant | prose | 19xx - DOC - US Sales Brochure pg 17.jpg, p. 1 “The amp]ifier output originat ing from pins 18 and 19 0 f the amp] ifier card 8 - 116 is connected to the DIRECT output a t pins 6 and 14 0…” |
| 16 | THREE LED INDICATOR CIRCUITS | control / tally | variant | prose | 19xx - DOC - US Sales Brochure pg 19.jpg, p. 1 “WAAD-BECK SysteMs LTD_ CIRCUIT DESCRIPTION M605A AUDI0 DISTRIBUTION AMPLIFIER The three LED indicator circuits are packaged separately on a…” |
| 18 | AMPIFIER OUTPUT ORIGINAT ING | audio out | variant | prose | 19xx - DOC - US Sales Brochure pg 17.jpg, p. 1 “The amp]ifier output originat ing from pins 18 and 19 0 f the amp] ifier card 8 - 116 is connected to the DIRECT output a t pins 6 and 14 0…” |
| 19 | AMPIFIER OUTPUT ORIGINAT ING | audio out | variant | prose | 19xx - DOC - US Sales Brochure pg 17.jpg, p. 1 “The amp]ifier output originat ing from pins 18 and 19 0 f the amp] ifier card 8 - 116 is connected to the DIRECT output a t pins 6 and 14 0…” |
Pictures
1971 - M605C - 605-01-004 - COMPARATORS OVERLOAD REF NORMAL REF.jpg
1971 - M605C - 605-02-013 - SYSIEM WIRING FRAME LCAD.jpg
1971 - M605C - 605-02-014 - ORN PA-EE MGOSC AUDIO DISTRIBUTION AMPLIFIER.jpg
1971 - M605C - 605-06-008 - AUDIO DISTRIBUTION AMPLIFIER COMPONENT LAYOUT.jpg
1971 - M605C - 8-116-06-001 - COMPONENI SIDE REVISION.jpg
1971 - M605C - 8-117-06-003 - INDICATOR DRIVER COMPONENT LAYOUT.jpg
1971 - M605C - 8-118-06-002 - RISHT HAND ASSEMBLY LEFT HAN.jpg
1971 - M605C - WBSps - M605C - Manual and Schematic (10).jpg
1971 - M605C - WBSps - M605C - Manual and Schematic (11).jpg
1971 - M605C - WBSps - M605C - Manual and Schematic (12).jpg
1971 - M605C - WBSps - M605C - Manual and Schematic (13).jpg
1971 - M605C - WBSps - M605C - Manual and Schematic (14).jpg
1971 - M605C - WBSps - M605C - Manual and Schematic (15).jpg
1971 - M605C - WBSps - M605C - Manual and Schematic (2).jpg
1971 - M605C - WBSps - M605C - Manual and Schematic (3).jpg
1971 - M605C - WBSps - M605C - Manual and Schematic (4).jpg
1971 - M605C - WBSps - M605C - Manual and Schematic (5).jpg
1971 - M605C - WBSps - M605C - Manual and Schematic (6).jpg
1971 - M605C - WBSps - M605C - Manual and Schematic (7).jpg
1971 - M605C - WBSps - M605C - Manual and Schematic (8).jpg
1971 - M605C - WBSps - M605C - Manual and Schematic (9).jpg
1971 - M605C - WBSps - M605C - Manual and Schematic.jpg
19xx - DOC - US Sales Brochure pg 23.jpgPhotos & scans (24)
Sub-assemblies & parts used (3)
| Item | What | Family | Year | How we know |
|---|---|---|---|---|
| 8-116 | Component Side Revision | Sub-assemblies (n-nnn) | drawing filed with it | |
| 8-117 | Indicator Driver Component Layout | Sub-assemblies (n-nnn) | drawing filed with it | |
| 8-118 | Aand Assembly Left Hanc Assemely | Sub-assemblies (n-nnn) | drawing filed with it |
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.
Specifications (1)
Technical Data — 264 words · 19xx - M605C - DOC - US Sales Brochure pg 23.jpg, page 1
M605C AUDIO DISTRIBUTION AMPLIFIER Ga in: +18 to -6 dB continuously variab]e (Bridging Ga in) . Frequency Response: +0.2 dB from 20 Hz to 20 kHz . No ise: at maximum ga in : at unity ga in: 70 dB be low +8 dBm _ 85 dB below +8 dBm (20 Hz to 20 kHz ) L Harmonic Distortion: Less than 0 .
1% THD from 20 Hz to 20 kHz up to +24 dBm output Teve] with 4 isolated outputs s imultaneously driven . Input Level : -10 dBm to +14 dBm nomina 1 for +8 dBm output , +24 dBm maximum a t unity ga in. Input Impedance: 30 , 000 ohms or greater , ba ]anced . Source Impedance: 600 ohms or Tess , ba lanced .
Common Mode Rejection: 65 dB or greater _ Output Level : +8 dBm nomina ] . +24 d Bm maximum a t each output , up to 4 outputs maximum_ Output Impedance: 150 ohms resistive at each output, actively ba Ianced _ Load Impedance: 150 ohms ba Tanced for each isolated output_ Tota 1 minimum Toad impedance a t DIRECT output not to be Tess than 75 ohms _ Output Isolation: Phas ing : 45 dB or greater (30 Hz to 35 kHz ) The Tow termina ] number 0 f the input pa ir and the Tow termina ] number 0 f the output pa ir are in phase.
Power Requirements : 115 volts ac +10 % , 6 0 Hz , 20 VA _ Ambient Temperature: 0 to 60 degrees Celsius _
- source: 19xx - M605C - DOC - US Sales Brochure pg 23.jpg, p. 1
Drawings (7)
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.
Comparators Overload Ref Normal Refviewer
Sysiem Wiring Frame Lcadviewer
Orn Pa-Ee Mgosc Audio Distribution Amplifierviewer
Audio Distribution Amplifier Component Layoutviewer
Componeni Side Revisionviewer
Indicator Driver Component Layoutviewer
Risht Hand Assembly Left Hanviewer
Read from the drawing title blocks.
| Drawing | Title | Date | Drawn by | Checked by | Iss. | Source |
|---|---|---|---|---|---|---|
| 605-01-004 | Comparators Overload Ref Normal Ref | PKM | KR | 3 | file | |
| 605-02-013 | Sysiem Wiring Frame Lcad | file | ||||
| 605-02-014 | Orn Pa-Ee Mgosc Audio Distribution Amplifier | file | ||||
| 605-06-008 | Audio Distribution Amplifier Component Layout | file | ||||
| 8-116-06-001 | Componeni Side Revision | GEB (Gerry E. Bell) | 8 | file | ||
| 8-117-06-003 | Indicator Driver Component Layout | P MAHONEL | RC | 8 | file | |
| 8-118-06-002 | Risht Hand Assembly Left Han | GEB (Gerry E. Bell) | RCL | 2 | file |