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Sound Choice SC-186Kx2 Instruction Manual

Infrared audio transmitter
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INSTRUCTION MANUAL
MODEL SC-186Kx2
INFRARED AUDIO TRANSMITTER
498 Long Hill Road
Gillette, NJ 07933 USA
908-647-2650
fax: 908-647-2651
toll free: 877-896-5084
email: sndchoice@aol.com
website: www.assistivelistening.net
© 1994-2007 US Patents 5,548,654 and 5,596,648
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Summary of Contents for Sound Choice SC-186Kx2

  • Page 1 INSTRUCTION MANUAL MODEL SC-186Kx2 INFRARED AUDIO TRANSMITTER 498 Long Hill Road Gillette, NJ 07933 USA 908-647-2650 fax: 908-647-2651 toll free: 877-896-5084 email: sndchoice@aol.com website: www.assistivelistening.net © 1994-2007 US Patents 5,548,654 and 5,596,648...
  • Page 2 Sound Choice. The special feature of the SC-186Kx2 is that while the two channels transmit the same audio signal most of the time, one channel transmitting at 2.3 mHz can be muted in order...
  • Page 3 not be heard by listeners wearing headsets. The other channel transmitting on 2.8 mHz will always remain on so that listeners entitled to hear private communications can continue to do so unmuted. A typical situation would be in court where it would not be permissible for a juror to hear certain private discussions during the proceedings.
  • Page 4 INSTRUCTIONS FOR BASIC SETUP: Unpack the transmitter, power transformer, 360° microphone-emitter box (SC-MEB if ordered), remote mute control and cable (SC-RMS if ordered), 360° emitter disk (SC-360 if ordered), and at least one headset receiver. Please see the instructions packed with the headset con- cerning its setup and use.
  • Page 5 SC-186K TOP VIEW...
  • Page 6 SC-186Kx2 TOP VIEW note: The BNC connector on the upper left of the top plate is an option. Your system might not have this option included.
  • Page 7 MICROPHONE-EMITTER BOX (SC-MEB): 5. Attach the end of the SC-MEB’s DIN plug to the DIN jack on the back panel labeled “SLAVE”. A small red indicator inside the box will be visible through one side of the red translucent box. 6.
  • Page 8 REMOTE MUTE CONTROL (SC-RMS): 7. Connect the small 3.5 mm stereo plug to the jack on the remote control box. 8. Connect the mini DIN plug to the jack labeled "MUTE" on the transmitter's rear panel. 9. When connected properly, a small indicator LED will light on the control box's top surface whenever the transmitter power is on.
  • Page 9 OMNIDIRECTIONAL 360° EMITTER (SC-360): 11. Attach one end of the stalk’s RCA phono plug to the emitter disk's matching RCA jack. The other RCA plug end should be plugged into the RCA to BNC adaptor. (Only SC- 186Kx2 units ordered with this option will have the BNC connector).
  • Page 10 USING ANOTHER INPUT SOURCE: Although the internal pressure zone microphone is one of the best ways to pick up sounds within a room when no other microphones are available, or when a single speaker is positioned near the transmitter, there are situations where other solutions are possible.
  • Page 11 2. Move the selector switch next to the EXTERNAL INPUT jack to the "LINE" position. Leaving the switch in the wrong position won't damage the transmitter, but the sound will be overloaded and distorted. As soon as the external line source is plugged in, the internal microphone is automatically disabled.
  • Page 12 small auditorium will provide the needed height. In a hotel meeting room or other similar location, the infrared light is likely to bounce off of a low ceiling and still reach the listen- ers' headsets. The central lobe of the main beam will pro- vide a direct signal at least 50 to 75 feet back, and about 25 to 35 feet to the sides at 60°...

  • Page 13: Miscellaneous Notes

    TECHNICAL SPECIFICATIONS: MODEL SC-186Kx2 • Microphone: Sound Choice design pressure zone electret (standard) or Crown® PZM-11 capsule (special order). • Preamplifier: Low-noise BiFET circuitry with automatic gain control and peak limiting • 1/4" Input Jack switchable for mic or line levels (unbalanced) •...

  • Page 14: Limited Warranty

    WARRANTY PERIOD: Sound Choice products are warranted for the period of THREE YEARS from the date of original purchase. Sound Choice will, at its op- tion, repair the defective product at no cost to you, or replace the defec- tive product with new or remanufactured functionally equivalent product of equal value.