Clear-Com KB-702GM Instruction Manual

Clear-Com KB-702GM Instruction Manual

Two-channel speaker stations
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CLEAR-COM ENCORE
KB-702/KB-702GM TWO-CHANNEL SPEAKER STATIONS
I N S T R U C T I O N M A N U A L

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Summary of Contents for Clear-Com KB-702GM

  • Page 1 CLEAR-COM ENCORE KB-702/KB-702GM TWO-CHANNEL SPEAKER STATIONS I N S T R U C T I O N M A N U A L...
  • Page 2 Room 1806, Hua Bin Building No. 8 Yong An Dong Li Jian Guo Men Wai Ave Chao Yang District Beijing, P.R. China 100022 Clear-Com is a registered trademark of Vitec Group Communications. The Clear-Com Logo is a registered trademark of Vitec Group Communications.
  • Page 3: Table Of Contents

    Block Diagram for the KB-702 ........3-1 Block Diagram for the KB-702GM ....... . 3-2 Troubleshooting .
  • Page 4 K B - 7 0 2 / K B - 7 0 2 G M T W O - C H A N N E L S P E A K E R S T A T I O N S...
  • Page 5: Important Safety Instructions

    IMPORTANT SAFETY INSTRUCTIONS 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with dry cloth. 7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
  • Page 6 Figure 1: Safety Symbols EMC AND SAFETY The KB-702 and KB-702GM stations meet all relevant CE and FCC specifications set out below: EN55103-1 Electromagnetic compatibility. Product family standard for audio, video, audio-visual, and entertainment lighting control apparatus for professional use.
  • Page 7: Operation

    Clear-Com directly. Clear-Com applications support and service people are ready to help. DESCRIPTION The Clear-Com KB-702 is a two-channel speaker station ideal for theatre, live performances, industrial applications, and small TV facilities. It features excellent speech intelligibility even in high-noise environments and can be tailored to your needs through its programmable options.
  • Page 8: Operation

    If a hand-held push-to-talk mic is used, or if the panel mic is used on the KB-702GM, set the sidetone controls for minimum feed-through to the speaker to prevent acoustic feedback.
  • Page 9 • VOX INDICATION: On the KB-702GM, when the VOX feature is enabled, the talk button illuminates amber to indicate an active talk, and the VOX light illuminates amber to indicate that the panel microphone is in use.
  • Page 10 The speaker volume will automatically dip whenever the talk function is set, unless the VOX function is disabled. 8. Mic Select Switch (KB-702GM only): The mic select switch selects whether the panel microphone or the headset microphone is active. If the VOX feature is enabled, it is only operational when the panel microphone is active.
  • Page 11: Internal Adjustments And Connections

    11. Panel Mic Connector (KB-702GM only): Clear-Com recommends the GM-9 and GM-18 plug-in panel microphones for use with the KB-702GM. The GM-9 is 9 in. (23.04 cm) long and the GM-18 is 18 in. (46.08 cm) long. Both are the electret type. The 1/4 in. (0.64 cm)phone jack on the microphone mates with the panel mic receptacle on the front panel of the KB-702GM.
  • Page 12 P3 Must be installed if no option P2 Must be installed if no option P1 Call P1 Call on on Both Selected View from top of KB-702 Front Panel Figure 1-3: Internal Adjustments and Connections 13. Call Alert Tone Level Control: This control adjusts the volume of the call alert tone sound.
  • Page 13 Option modules are installed, this jumper is not used. In TW operation, the call signal always originates on channel A. In 4-Wire operation, the call signal is not used. 16. Intercom Line Connection: The KB-702 contains a 5-terminal plug-on connector for intercom line connection. This connector is intended to be unplugged from the circuit board when connecting the intercom line, and then plugged back on when the wiring is completed.
  • Page 14 When the optional EB7-4W four-wire or EB7-TW modules are used, both P1 and P3 must be removed. In the KB-702GM, P2 is replaced by the VOX module. Save these jumper plugs for possible future use after removing them. The KB-702 will not operate without either these jumper plugs or the optional modules installed.
  • Page 15: Installation

    #1 to the on or closed position. 4. Install the KB-702 into the four-gang outlet box or V-box. (For additional information, refer to the Clear-Com System Installation Manual.) 5. Set listen levels and sidetones. (Refer to the listen level and sidetone setting topics in the Operation chapter of this manual.)
  • Page 16 2 - 2 K B - 7 0 2 / K B - 7 0 2 G M T W O - C H A N N E L S P E A K E R S T A T I O N S...
  • Page 17: Maintenance

    MAINTENANCE This chapter provides maintenance information including block diagrams and tips for solving problems. Caution: These servicing instructions are for use by qualified personnel only. To reduce the risk of electrical shock, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. BLOCK DIAGRAM FOR THE KB-702 Sidetone Intercom...
  • Page 18: Block Diagram For The Kb-702Gm

    BLOCK DIAGRAM FOR THE KB-702GM Headset Sidetone Intercom Null Speaker Speaker Volume On/Off Mic Select Speaker Panel Mic Dip / Long Line Mute Headset Output Talk/ Talk Balanced Program Red / Program Mute Green Input Call Alert Program Tone Level...
  • Page 19: Troubleshooting

    A headset extension cord was used. Headset extension cords are not recommended. VOX problems (KB-702GM Stays tripped (amber light on). Turn VOX sensitivity control in a only) Sensitivity set too high.
  • Page 20 Remove any audio transformers or line. other equipment that may be connected across the intercom line. If equipment other than Clear-Com intercom equipment must be connected to the intercom line, please contact Clear-Com application or service personnel for information or recommendations.
  • Page 21: Technical Specifications

    Max level before Clipping >= 12dBu Sidetone Null Capability (KB-702GM only) > 25dB K B - 7 0 2 / K B - 7 0 2 G M T W O - C H A N N E L S P E A K E R S T A T I O N S...
  • Page 22 Frequency Response Panel Mic - Party Line (KB-702GM only) 300 - 16KHz ± 3dB Headset Mic - Party Line 300 - 15KHz ± 3dB Program Input - Headset Out 200 - 18KHz ± 3dB Program Input - Speaker Out 200 - 18KHz ± 3dB Party Line - Headset Out 200 - 18KHz ±...
  • Page 23 KB-702GM 1.1 lbs.(0.50 Kg) Notice About Specifications While Clear-Com makes every attempt to maintain the accuracy of the information contained in its product manuals, that information is subject to change without notice. Performance specifications included in this manual are design-center specifications and are included for customer guidance and to facilitate system installation.
  • Page 24 4 - 4 K B - 7 0 2 / K B - 7 0 2 G M T W O - C H A N N E L S P E A K E R S T A T I O N S...
  • Page 25: Limited Warranty

    • UHF wireless intercom systems have a limited warranty of three years. • All other Clear-Com and Drake brand systems and products, including beltpacks, have a limited warranty of two years. The warranty starts at the time of the product’s original purchase. The warranty...
  • Page 26: Warranty Repairs And Returns

    such agreement. For more information, contact your authorized dealer, distributor, or sales representative. Instructions for reaching VGC’s User Support Centers are given below. Telephone for Europe, Middle East and Africa: +49 40 6688 4040 Telephone for the Americas and Asia: +1 510 337 6600 Email: vitec.support@AVC.de Once the standard warranty period has expired, the User Support Center will continue to provide telephone support if you have purchased an Extended...
  • Page 27: Service Contract

    years the warranty of any product offered with a standard two-year warranty. The total warranty period will not extend beyond five years. Any purchase of an extended warranty provides 24 x 7 customer support in addition to the warranty immediately upon purchase of the warranty extension. Note: VGC does not offer warranty extensions on UHF wireless intercom systems, or on any product with a 1-year or 90-day warranty.
  • Page 28 of customer furnished components resulting in damage to VGC provided product. This limited warranty is not transferable and cannot be enforced by anyone other than the original consumer purchaser. This warranty gives you specific legal rights and you may have other rights which vary from country to country.

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