Crown CM-30 Application Manual
Teleconferencing & distance learning
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Also See for CM-30:
- Application manual (7 pages) ,
- Datasheet (2 pages) ,
- Quick start manual (2 pages)
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CROWN MICROPHONE APPLICATION GUIDE:
TELECONFERENCING & DISTANCE LEARNING
© 2001 Crown Audio, Inc. All rights reserved PZM® and
are registered trademarks of Crown International.
Also exported as Amcron®
102100-2
11-01
PCC®
Crown International
P.O. Box 1000,
Elkhart, Indiana 46515-1000
(574) 294-8200 Fax (574) 294-8329
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Summary of Contents for Crown CM-30
- Page 1 CROWN MICROPHONE APPLICATION GUIDE: TELECONFERENCING & DISTANCE LEARNING © 2001 Crown Audio, Inc. All rights reserved PZM® and are registered trademarks of Crown International. Also exported as Amcron® 102100-2 11-01 PCC® Crown International P.O. Box 1000, Elkhart, Indiana 46515-1000 (574) 294-8200 Fax (574) 294-8329...
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Page 2: Application Guide
CROWN MICROPHONE APPLICATION GUIDE FOR TELECONFERENCING AND DISTANCE LEARNING Thanks to teleconferencing, we can hold meetings with people in another location without having to travel there. Distance learning lets a professor teach thousands of students in various locations, all at the same time, in a cost-effective manner. - Page 3 Figure 3 The parts of a distance learning system are the same as in a teleconference system. Crown makes one part of these systems: the microphones. You should contact a consultant, codec manufacturer or system integrator to design and install your com- plete system.
- Page 4 A phantom power supply sends power to the mic along its mic cable. Two phantom supplies from Crown are the PH-4B (powers up to four mics) and the PH-1A (powers one mic). Most modern mix- ers provide phantom power for microphones, so that no external supply is needed.
- Page 5 An example of an MB mic: The MB-2. Hanging mics Normally, these mics are hung over the students in a distance learning setup. The Crown hanging mics are the CM-30 and CM-31. Each mic rejects sound from the rear, and rejects muddy-sounding room acoustics. CM-30 CM-30 electronics mount in an electrical box in the ceiling.
- Page 6 The teacher in a distance- learning system often uses a lavalier mic. Figure 4. A lavalier mic. The rest of this guide suggests the best Crown mics for various applications. It also suggests how to place them to achieve the best sound quality.
- Page 7 1. Place one mic at arm’s length from each person, or place one between every two people. 2. At a lectern, mount a Crown LM series lectern mic of your choice. If the leader of the meeting moves around while talking, he or she needs a lavalier mic.