Bose 402 C Owner's Manual
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Bose 402 C Owner's Manual

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402
C/802
C II
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®
sysTeM
ConTrollers
owner's GuIde


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  • Page 1 Bose ® C/802 C II ® sysTeM ConTrollers owner’s GuIde...

  • Page 2: Table Of Contents

    External Protection Circuit Harness..9 is attempted by unqualified personnel. Service and the installation of any optional electronics Appendix B: Specifications ........0 should always be performed by Bose-authorized Electrical Specifications personnel. And Controls ........0 Mechanical Specifications ....0 Controller Accessories .......

  • Page 3: Before You Begin

    Please read this safety information before you ® ® II systems controller. install, connect, or operate the Bose 40C or 80C II systems controllers. In this owner’s guide, sections two and three list safety, general descriptions, and main features for 2.1 Read the instructions.

  • Page 4: Introducing The Controllers

    ® electronics necessary to complete any sound offer a flexible building-block approach to sound reinforcement system which includes the Bose 40, system design. Please review the sample system 40W, 80, or 80W loudspeakers. Each controller configurations shown in Figures  through 8. They has a Mode Switch to accommodate various full- can help you get started with your system design.

  • Page 5: Configurations Including An Acoustic Wave

    AWCS II loudspeaker for the protection circuit input connector on the bass. controller rear panel. 1. Have authorized Bose personnel install the OC- ® CAUTION: Even with the protection circuit, you must  option card in the controller.
  • Page 6 402C controller Amplifier From pre- amplifier Low frequency output 502B bass enclosure Amplifier 402 (R) loudspeaker High frequency output 402 (L) loudspeaker Figure 3 (or 40W) bi-amplified system with 50 B (or 50BP) Acoustimass bass enclosure. ® Figure 4 Protection loop Protection circuit Low frequency...
  • Page 7 802C II controller From 802 (R) pre- loudspeaker amplifier Amplifier High frequency output 802 (L) loudspeaker Figure 5 (or 80W) full-range system. ® 502B bass enclosure 802C II controller Amplifier From pre-amplifier Low frequency output 802 (R) loudspeaker Amplifier High frequency output 802 (L)
  • Page 8 Protection Protection loop circuit input Low frequency output 802C II controller Amplifier From pre- amplifier AWCS II loudspeaker Amplifier 802 (R) High loudspeaker frequency output 802 (L) loudspeaker (or 80W) bi-amplified systems with the Acoustic Wave Cannon System II loudspeaker. ®...

  • Page 9: General Operating Instructions

    Bose or an authorized Service Center. If any part looks damaged, do not use the controller. Repack it in its carton and notify Bose ® Service or your authorized Bose Professional Products dealer immediately.
  • Page 10 D. Two INPUT jacks: Two channels, balanced,  kΩ I. OUTPUT MODE switch: Choose the SUM minimum input impedance. setting to combine the bass portion of the signals from the two INPUT jacks (which are E. Two INPUT LEVEL switches: One for each input usually stereo left and right).

  • Page 11: Input Connections

    5.3 Input Connections An audio source (mixing console or signal processor) comes before the systems controller in the signal path. That audio source feeds the controller’s two INPUT jacks (Figure ). NOTE: The pin numbers are shown in small type on the controller’s INPUT jacks.

  • Page 12: Output Connections

    From 5.4 output Connections Amplifier controller input In a full-range system that includes only 40 or 80 ® loudspeakers, use the controller’s HIGH FREQ OUTPUT jacks to drive the amplifier(s) feeding the loudspeakers. Shield Do not use the LOW FREQ OUTPUT jacks. The MODE switch should be set to Mode  (FR).

  • Page 13: Mechanical Connections

    5.5 Mechanical Connections The 40 C and 80 C II systems controllers are  ⁄ ” ® high (U). They fit a standard 9” rack. Use screws or bolts that fit the rack you are using. Note the maximum depth of the rack as shown in Figure 6. .4”...
  • Page 14 AWCS Input MODE switch in position : BA (bi-amp) OC- option card MUST be installed by authorized Bose personnel in the controller to achieve correct performance of the system. Connect the controller’s LOW FREQ OUTPUT jacks to the amplifier(s) driving the bass.
  • Page 15 low frequency ouTPuT Mode (bass sum) This switch (Figure ) is very useful in systems with only one bass loudspeaker or single-channel bass. You can use it to combine the Channel  and Channel  (or left and right) bass signals. Figure 21 Even from 5 Hz to 40 Hz, some musical program Low frequency OUTPUT MODE switch (for bass...

  • Page 16: Appendix A: Installing The Oc- Option Card

    Appendix A: Installing The oC-1 option Card NOTE: The OC-1 option card can be purchased and installed ONLY through an authorized Bose ® Service Center or dealer. It is not user-installable. A.1 Installing The Internal Protection Circuit Harness 1. Unplug the systems controller. Disconnect all audio connections.
  • Page 17 Figure 25 Positioning and securing the external harness. 5. Remove the lock nut and washer from the internal protection circuit harness (Figure 5a). Set them safely aside. 6. Thread the internal harness through the rear panel. Insert the small white connector first. The wire end of the harness should now be inside the controller.

  • Page 18: Connecting The Oc- To The

    A.2 Connecting The oC-1 To The 3. Insert the circuit board into the multipin systems Controller receptacles inside the systems controller (Figure ). The component side faces you. The J jack The rear panel of the systems controller should face is on the left side.

  • Page 19: Installing The Systems Controller And External Protection Circuit Harness

    If necessary, trim the cable to length. If the cable is too short, connect additional cable. Use well-insulated in-line crimp on cable splices. NOTE: Bose recommends attaching the external ® harness to a banana plug, if possible. Or, strip and twist the wires for insertion into the speaker terminal lug holes.

  • Page 20: Appendix B: Specifications

    Appendix B: • Crossover frequency: 40 Hz in bi-amp mode (with 50 B or 50BP bass enclosures); 5 Hz specifications (with AWCS II loudspeaker OC- option card installed); rolloff slope: 8 dB/octave • Channel-to-channel separation: > 60 dB @  B.1 electrical specifications And Controls •...

  • Page 21: Appendix C: Warranty And Service

    TEL 0-58600 FAX 0-583 TEL 095-4534/5 FAX 095-4 denmark other locations Bose A/S, Industrivej , 605 Brøndby Bose Service, Otis Street Park, Building 3, PO Box TEL 4343 FAX 434388 5045, Westborough, MA 058-5045 USA TEL (508) 366-9896 FAX (508) 366-8443...
  • Page 22 © 994 Bose Corporation, The Mountain, Framingham, MA 00-968 USA JN9486 /93 PN6006...

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