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Wheatstone SP-42 Technical Manual

Sp-40 series audio production consoles
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SP-40 Series
Audio Production Consoles
Second Edition – For consoles with serial numbers 20556 and up
Model SP-42 2-track console
Model SP-44 4-track console
Model SP-48 8-track console
T
M
ECHNICAL
ANUAL
December 1992

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Summary of Contents for Wheatstone SP-42

  • Page 1 SP-40 Series Audio Production Consoles Model SP-42 2-track console Model SP-44 4-track console Model SP-48 8-track console ECHNICAL ANUAL December 1992 Second Edition – For consoles with serial numbers 20556 and up...
  • Page 2 SP-40 Series Audio Consoles Technical Manual - 2nd Edition ® ©1992 Wheatstone Corporation 600 Industrial Drive New Bern, North Carolina 28562 252-638-7000 (Fax 252-637-1285) SP-4 / Dec 92...
  • Page 3 12 are employed instead (i.e., 10K resistor R102 now feeds pin 14, pin 13 feeds capacitor C44, pin 11 feeds pin 9 of U3, and pin 12 goes to ground). SL-2 Stereo Line Input Module Schematic (SP-42 Console only): EQ switches "SW2" and "SW4" are not loaded.
  • Page 4 Module Removal Tools Your Wheatstone audio console is equipped with two "module extractor tools" which are mounted in the front panel of the console mainframe. All modules are held into the console mainframe by two mounting screws (top and bottom) which, when removed, leave specially threaded holes that accept the two extractor tools.

  • Page 5: Table Of Contents

    Tape remote module ................ 1-9 Superphone module ................. 1-9 Intercom module................1-10 SP-44 (48) System Signal Flow Diagram ........1-11 SP-42 System Signal Flow Diagram ..........1-12 Performance Specifications ............1-13 INSTALLATION Placing the Console ................. 2-1 Console and Cut-out Dimensions ............ 2-1 Static VU Alignment ...............
  • Page 6 ABLE OF ONTENTS CONSOLE I/O CONNECTIONS (continued) STEREO LINE INPUT MODULE (SL-4) ...........3-7 Audio Connections..................3-7 Control Ports ....................3-7 Dipswitch Controlled Functions ..............3-8 GROUP MODULE (GP-4) ................3-9 Audio Connections..................3-9 STEREO MASTER OUTPUT MODULE (SM-4)........3-10 Audio Connections...................3-10 CONTROL ROOM MONITOR MODULE (CR-4)........3-11 Audio Connections...................3-11 Auxiliary Control Ports................3-12 Dipswitch Controlled Functions ..............3-12...
  • Page 7 Mono mic/line input module (SP-42)..........5-4 Dual mic input module (SP-44/48)..........5-4a Stereo line input module (SP-44/48) ..........5-5 Stereo line input module (SP-42) ............ 5-6 Group Module ................. 5-7 Master Output Module (SP-44/48) ..........5-8 Master Output Module (SP-42) ............5-9 Control Room Monitor Module (SP-44/48) ........

  • Page 8: Console Overview

    There are three models: the SP-42 (intended for 2-track use), the SP-44 (4- track) and the SP-48 (8-track). All models are similar in layout, but differ primarily in the number of outputs available.
  • Page 9 Audition), two auxiliary sends and cue. Four VU meters (Program and Audition left and right) are included. The mainframe includes a control room monitor module and has room for two accessory modules (righthand frame positions only). SP-40 CONSOLE SERIES FEATURES SP-42 SP-44 SP-48 MAINFRAME POSITIONS...
  • Page 10 5 / 6 7 / 8 7 / 8 Mono Input Mono Input Mono Input Stereo Input Stereo Input Stereo Input SP-42 SP-44 SP-48 SP-42 SP-44 SP-48 SP-4 / Dec 92 Input Modules – SP-40 Series Audio Consoles Page 1 - 3...

  • Page 11: Mono Mic/Line Input

    ONSOLE VERVIEW STANDARD MODULES Mono Mic/Line Input (ML-48) This module brings mic signals into the console; when switched to line input it is used to play individual tracks from the multi-track machine. Familiar PGM and AUD switches are provided for on-air application and rapid learning curves.
  • Page 12 GROUPS MASTER MASTER Group #1 Group #2 Group #3 Group #4 Stereo Master Stereo Master SP-44/48 SP-44/48 SP-48 only SP-48 only SP-42 SP-44/48 Group & Output Modules – SP-40 Series Audio Consoles SP-4 / Dec 92 Page 1 - 5...

  • Page 13: Group Modules

    ONSOLE VERVIEW Group Modules (GP) These modules provide the record outputs to the tape recorder during the multi-track lay-up, and provide subgrouping functions during mixdown ses- sions. Each fader (two to a panel) controls the level of one track sent to the multi- track recorder.

  • Page 14: Control Room Module

    EXT2 EXT2 EXT2 AUTO AUTO RESTART RESTART TIMER TIMER HDPN HDPN STUDIO STUDIO Control Room Control Room Studio (opt.) Studio (opt.) SP-42 SP-44/48 SP-42 SP-44/48 Monitor Modules – SP-40 Series Audio Consoles SP-4 / Dec 92 Page 1 - 7...
  • Page 15 ONSOLE VERVIEW LS- 4 TR- 4 SPN-4 ICM- 4 TR- 4 TRIM NULL BUSY >> << PRIVACY PLAY RECORD READY INTERCOM STOP CUE CALLER CALL 1 CALL 2 >> << PLAY STOP Stereo Selector Tape Remote Superphone Intercom Accessory Modules – SP-40 Series Audio Consoles SP-4 / Dec 92 Page 1 - 8...

  • Page 16: Studio Module

    ONSOLE VERVIEW The following programmable functions are available: CUE may be pro- grammed to interrupt HDPN or CR monitor; HDPN interrupt receives the CUE signal; CR interrupt provides a split feed, with PGM on left and CUE on the right (interrupts are dipswitch-selectable). This module also includes a control room mute circuit, which may be activated from an appropriately pre-pro- grammed input channel, and also includes an on-air tally relay.

  • Page 17: Intercom Module

    It is part of an integrated intercom system; a family of modules available for all Wheatstone radio consoles, plus a rackmount version for equipment room installation. It also interfaces with the Wheatstone TS-500 Talent Station.

  • Page 18: 48) System Signal Flow Diagram

    REMOTE COUGH MUTE MONO LEVEL FET SW CONTROLS TO MIC CHANNEL LOGIC PORT H PGM ∑ LEVEL HDPN MONO HDPN HDPN INTRPT EXT 1 LEVEL JACK DIP SW CR MUTE STUDIO MUTE ON TALLY OFF TALLY TIMER RESTART LOGIC COUGH MIX-MINUS EXT 2 TB TO STUDIO...

  • Page 19: 48) System Signal Flow Diagram

    2 IN EXT 6 FADER TO HYBRID AUTO LINE SELECT CALL 1 CUE SW SUPER TRIM SP-42 AUDIO CONSOLE PHONE CALL 2 TO HYBRID CUE SW SYSTEM FLOW DIAGRAM System Flow Diagram — SP-42 Audio Console Page 1 - 12...

  • Page 21: Installation

    Installation CHAPTER CONTENTS Placing the Console ................. 2-1 Console and Cut-out Dimensions ............ 2-1 Console Power Supply ..............2-2 Dual Failsafe Supply ..............2-2 System Ground ................2-3 Typical Grounding Scheme (dwg) ..........2-3 Further Grounding Details ............2-4 PLACING THE CONSOLE SP-40 series consoles come shipped in two parts: a cardboard carton containing the rackmount power supply and its connecting cable, and a wooden crate containing the console itself.
  • Page 22 NSTALLATION THE CONSOLE POWER SUPPLY The console power supply is a standard 19" rackmount unit. It should be mounted in an adjacent equipment rack within 15 feet (but preferably no closer than 3 feet) of the console. The mounting location should allow proper air circulation around the unit.

  • Page 23: Console Power Supply

    NSTALLATION SYSTEM GROUND Safety requirements dictate that a positive connection from the console mainframe to electrical ground be made in the completed installation. The system ground serves two important purposes: (1) Provide a zero signal reference point for the entire audio system; (2) Assure safety from electrical shock.

  • Page 24: Further Grounding Details

    Each piece of equipment should be connected by its own ground wire (usually the round third pin on the AC cord). This means that every AC outlet The aforementioned "isolated AC ground" (orange studio must have a separate conductor run to the console ground lug terminal; the outlet;...

  • Page 25: Console I/O Connections

    I/O C ONSOLE ONNECTIONS Console I/O Connections CHAPTER CONTENTS General ......................3-2 AMP Tool Connector System ..............3-2 Balanced vs Unbalanced I/O Connections..........3-3 Typical I/O Connections (wiring diagrams) ..........3-4 Mono Mic/Line Input Module (ML-4)............3-5 Audio Connections..................3-5 Control Ports ....................3-5 Dipswitch Controlled Functions ..............3-6 Stereo Line Input Module (SL-4)...............3-7 Audio Connections..................3-7 Control Ports ....................3-7...

  • Page 26: General

    I/O C ONSOLE ONNECTIONS GENERAL All audio and control I/O connections to SP-40 series consoles are made through DB-25 multipin connectors located on the bottom of the console mainframe. All input and group module mainframe positions have one DB- 25 I/O connector each; output and control room monitor modules, as well as all accessory module positions, have two each.

  • Page 27: Balanced Vs Unbalanced I/O Connections

    I/O C ONSOLE ONNECTIONS press the top of the vee together with a scribe or other sharp instrument; this will unlock the pin from the shell, and it can be removed and inserted into the correct position. Spread the vee apart to lock the pin in the new position. It should never be necessary to discard a connector due to a wiring error.
  • Page 28 I/O C ONSOLE ONNECTIONS Connecting unbalanced inputs is simple - wire to the console with typical shielded two conductor cable (like Belden 9451), just as if you were connecting a balanced source. At the unbalanced machine’s output, connect the black wire (LOW) to the shield.

  • Page 29: Mono Mic/Line Input Module (Ml-4)

    I/O C ONSOLE ONNECTIONS MONO MIC/LINE INPUT MODULE (ML-4) Mono Mic/Line Audio Connections (Upper DB-25 Connector) Pin 25 - MIC INPUT, SHIELD Pin 12 - MIC INPUT, LOW Pin 24 - MIC INPUT, HIGH Pin 11 - LINE INPUT, SHIELD Pin 23 - LINE INPUT, LOW Pin 10 - LINE INPUT, HIGH Pin 22 - PATCH INSERT OUT, SHIELD...

  • Page 30: Dipswitch Controlled Functions

    Mix-minus assign is available only on SP-44 and SP-48 consoles. console's mix-minus bus. (The mix-minus signal tap is factory-programmed SP-42 consoles do not have a post fader.) mix-minus ACN bus. Position 4: RESTART - When activated, automatically sets the console's digital timer to zero and starts a count whenever the module's ON switch is pressed.

  • Page 31: Stereo Line Input Module (Sl-4)

    I/O C ONSOLE ONNECTIONS STEREO LINE INPUT MODULE (SL-4) Stereo Line Module Audio Connections (Upper DB-25 Connec- tor ) Pin 25 - LINE A INPUT LEFT, SHIELD Pin 12 - LINE A INPUT LEFT, LOW Pin 24 - LINE A INPUT LEFT, HIGH Pin 11 - LINE A INPUT RIGHT, SHIELD Pin 23 - LINE A INPUT RIGHT, LOW Pin 10 - LINE A INPUT RIGHT, HIGH...

  • Page 32: Dipswitch Controlled Functions

    Position 2: POST FADER - When activated, takes the module's SEND 3 only on SP-44 and SP-48 con- signal tap after the channel fader. Follows channel ON/OFF. soles. SP-42 consoles do not NOTE: Positions 1 and 2 are mutually exclusive; that is, have a mix-minus ACN bus.

  • Page 33: Group Module (Gp-4)

    GROUP MODULE (GP-4) SP-40 series group module complements vary according to console model number. SP-42 consoles have no group modules at all. SP-44 consoles have two group modules; each module houses circuitry for two subgroup channels. SP-48 consoles have four group modules for a total of eight subgroup channels.

  • Page 34: Audio Connections

    Pin 5 - PROGRAM MONO (SEND 2*) OUT, SHIELD Pin 17 - PROGRAM MONO (SEND 2*) OUT, LOW Pin 4 - PROGRAM MONO (SEND 2*) OUT, HIGH Pins 2,16 - AUDIO COMMON Pins 1,3,14,15 - NO CONNECTION *SP-42 consoles only SP-4 / Dec 92 Page 3 - 10...

  • Page 35: Control Room Monitor Module (Cr-4)

    I/O C ONSOLE ONNECTIONS CONTROL ROOM MONITOR MODULE (CR-4) Control Room Module Audio Connections Lower DB-25 Connector Pin 25 - EXTERNAL LINE 1 IN LEFT, SHIELD Pin 12 - EXTERNAL LINE 1 IN LEFT, LOW Pin 24 - EXTERNAL LINE 1 IN LEFT, HIGH Pin 11 - EXTERNAL LINE 1 IN RIGHT, SHIELD Pin 23 - EXTERNAL LINE 1 IN RIGHT, LOW Pin 10 - EXTERNAL LINE 1 IN RIGHT, HIGH...

  • Page 36: Dipswitch Controlled Functions

    I/O C ONSOLE ONNECTIONS Control Room Module Auxiliary Ports Lower DB-25 Connector Pin 1 - ON-AIR TALLY opto collector Pin 14 - ON-AIR TALLY opto emitter The On-Air Tally opto is activated by input module ON switches that have been programmed to Mute CR (page 3-6). Pin 2 - N/C Control Room Module Dipswitch Controlled Functions There is a PCB-mounted 4-position dipswitch on the printed circuit board of...

  • Page 37: Talkback Interrupt Jumpers

    I/O C ONSOLE ONNECTIONS OPTIONAL STUDIO MONITOR MODULE (SC-4) Studio Module Audio Connections (Lower DB-25 Connec- tor) Pin 25 - EXTERNAL LINE 1 IN LEFT, SHIELD Pin 12 - EXTERNAL LINE 1 IN LEFT, LOW Pin 24 - EXTERNAL LINE 1 IN LEFT, HIGH Pin 11 - EXTERNAL LINE 1 IN RIGHT, SHIELD Pin 23 - EXTERNAL LINE 1 IN RIGHT, LOW Pin 10 - EXTERNAL LINE 1 IN RIGHT, HIGH...
  • Page 38 I/O C ONSOLE ONNECTIONS OPTIONAL SUPERPHONE MODULE (SPN-4) Superphone Module Audio Connections Upper DB-25 connector (inputs) Ext input high is pin #24 Ext input low is pin #12 Ext input shield is pin #25 Mic input high is pin #10 Mic input low is pin #23 Mic input shield is pin #11 The mic input is intended for medium level signals;...

  • Page 39: Control Connections

    I/O C ONSOLE ONNECTIONS OPTIONAL ICM-4 INTERCOM MODULE Intercom Module INPUT AUDIO connections Upper DB-25 connector Balanced line in/out high is pin #15 Balanced line in/out low is pin #3 Balanced line in/out shield is pin #16 Optional speaker output high is pin #1 Optional speaker output low is pin #14 Optional speaker output shield is pin #2 Intercom Module OUTPUT AUDIO connections...
  • Page 40 I/O C ONSOLE ONNECTIONS OPTIONAL STEREO LINE SELECT MODULE (LS-4) Upper DB-25 Audio Connections Pin 24 - LINE 1 IN LT high Pin 12 - LINE 1 IN LT low Pin 25 - LINE 1 IN LT shield Pin 10 - LINE 1 IN RT high Pin 23 - LINE 1 IN RT low Pin 11 - LINE 1 IN RT shield Pin 21 - LINE 2 IN LT high...

  • Page 41: Tape Remote Module (Optional)

    TR- 4 I/O C ONSOLE ONNECTIONS Tape Remote Module I/O Connector Pinouts SW 6A COM SW 6A N.O. SW 6A LED– SW 6A LED+ SW 5A COM SW 5A N.O. SW 5A LED– SW 5A LED+ >> SW 4A COM SW 4A N.O.

  • Page 42: Operational Notes

    Operational Notes Chapter Contents Fader and Level Controls ..............4-1 Input Assign and Monitor Select Switches ........4-1 Cueing....................4-2 Sends....................4-2 Subgroups ..................4-2 Talkback ..................4-2 Note that individual module controls and general uses are explained in the earlier chapter "Console Overview".

  • Page 43: Cueing

    PERATIONAL OTES CUEING In addition to the assignment features described above, the console has an additional mono CUE bus that can be used by the operator when he or she needs to be sure that, for example, the cart machine on channel 7 is set to play the right jingle.

  • Page 44: Intercom Module

    Mono mic/line input module (SP-42)..........5-4 Dual mic input module (SP-44/48 ..........5-4a Stereo line input module (SP-44/48) ..........5-5 Stereo line input module (SP-42) ............ 5-6 Group Module ................. 5-7 Master Output Module (SP-44/48) ..........5-8 Master Output Module (SP-42) ............5-9 Control Room Monitor Module (SP-44/48) ........

  • Page 45: Group Module

    Upper DB I/O edgecard con- nector pins. Odd pins 1 (bottom) thru 13 (top) are on the component side (shown). Even pins 2 (bottom) thru 14 (top) are on the solder side of the card. These feed a DB-25 multipin connector mounted on the bottom pan of the console mainframe.
  • Page 67 LS-4 IN/OUTS DB Connector Pinouts DB Connector Pinouts INPUT PORTS INPUT PORTS INPUT PORTS INPUT PORTS INPUT PORTS INPUT PORTS LINE 1 LINE 5 (Upper DB-25) (Upper DB-25) LINE1INLTHI LINE5INLTHI UPPER DB-25 CONNECTOR 10.0K 10.0K LINE1INLTLO LINE5INLTLO UDBPIN13 UDB13 AGND UDB25 LINE1INLTLO UDB12...
  • Page 72 CT2/8 New Bern, NC 28562 CHECKED 1.00K TO TIMER TO CLOCK CONTROL 00S0008D ISSUED SIZE FSCM NO. DWG. NO. W# 700248 TM-6SD PCB 1 OF 1 SCALE SHEET AGND Timer Schematic - Sheet 1 of 1 Page 6-9 Wheatstone/Oct 2000...

  • Page 73: Power Supply

    Power Supply Schematic - Sheet 1 of 1 Page 5-35 A-300/Aug 2001...

  • Page 75: Basic Troubleshooting Procedures

    Troubleshooting CHAPTER CONTENTS Basic Troubleshooting Procedures ..........6-1 Integrated Circuits ................6-2 Other Details..................6-3 Technical information for the console is contained on the schematic drawings. Installation and hook up information is summarized in the text of this manual (see "Installation" and "Console I/O Connections" chapters). BASIC TROUBLESHOOTING PROCEDURES If you have encountered difficulty in testing your installation, check the items listed below before opening the console.

  • Page 76: Integrated Circuits

    ROUBLESHOOTING INTEGRATED CIRCUITS The audio circuits of the console consist almost entirely of plug-in IC op- amps. The types called out in the schematic drawings and parts lists are chosen for optimum performance; in an emergency situation other types of known matching pin-out and capability can be temporarily substituted.

  • Page 77: Other Details

    The Lexan panel overlays are durable, and can be easily cleaned with Windex. If they become burned or torn through carelessness they can be replaced; consult Wheatstone for details. Care should be taken with the plexiglas covering the VU meters, as it is easily scratched. Fader knobs should be removed or installed only when the fader is at the end of its travel, to avoid "bowing"...

This manual is also suitable for:

Sp-44Sp-48

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