Dynamic Microphone Sht1 050511

DYNAMIC MICROPHONE HEADSETS
SupraPlus Monaural
SDS 2490
SupraPlus Binaural:
Single Channel: SDS 2491
Dual Channel: SDS 2492
KEY FEATURES:
Mission-critical reliability and comfort. Our dynamic-microphone headsets not only
meet or exceed all specifications set by our existing world-class professional headsets,
but these headsets also deliver superior all-day, every-day comfort and reliability.
Dynamic noise-cancelling microphone. Noise-cancelling microphone with extended
boom eliminates nearly 75% of unwanted background noise, ensuring excellent
transmission clarity in busy, noisy environments.
Cable and Quick Disconnect. Single-cable design with robust PU (polyurethane)
jacketing material and Quick Disconnect options.
Excellent audio quality. Extended frequency response improves intelligibility.
Circumaural Cushion Kit. (sold separately) PN 83195-01 is available for use on
SupraPlus models.
PTT and connector options available upon request.
Ruggedized
SHR 2301
DYNAMIC MICROPHONE HEADSET SPECIFICATIONS
Sending Characteristics (all models):
Microphone Type:
Noise-cancelling dynamic
Frequency Range:
150 Hz to 10 kHz
Output Impedance:
150 ohms nominal
Noise Cancellation:
10 dB
Output Amplitude @ 1 kHz: -74 dBV +/- 4 dBV (126 to 316 µV RMS) open-circuit with an input signal of -6 dB Pa
applied to the front surface of the microphone housing that is held on-axis at one inch
from the lip ring of an artificial mouth per IEEE Std 269-1992 and ITU-T P.51
Receiving Characteristics (SupraPlus Monaural and Dual-channel):
Frequency Range:
100 Hz to 10 kHz
Input Impedance:
150 ohms +/- 25%
Output Amplitude @ 1 kHz: -7 dB Pa +/- 3 dB Pa with an input signal of
-20 dBV through 10 ohms using a head-and-torso simulator per IEC 959, ANSI S3.36-1985,
and ITU-T P.58
Receiving Characteristics (SupraPlus Binaural):
Frequency Range:
100 Hz to 10 kHz
Input Impedance:
75 ohms +/- 25%
Output Amplitude @ 1 kHz: -7 dB Pa +/- 3 dB Pa with an input signal of -20 dBV through 10 ohms using a
head-and-torso simulator per IEC 959, ANSI S3.36-1985, and ITU-T P.58
Receiving Characteristics (Ruggedized):
Frequency Range:
300 Hz to 10 kHz
Input Impedance:
300 ohms nominal
Output Amplitude @ 1 kHz: -11.8 dB Pa +/- 5.0 dB Pa into an IEC 60318 and ITU-T P.57 Type 1 coupler equipped
with a Bruel & Kjaer Type DB 0843 adapter with an input amplitude of -10.0 dBV
through 300 ohms
Note: 0 dB Pa = 94 dB SPL
Plantronics Inc. 345 Encinal Street / Santa Cruz, CA 95060 / (800) 544-4660 / www.plantronics.com
© October 2009, Plantronics, Inc. All rights reserved. The name Plantronics and the Plantronics logo are registered trademarks of Plantronics, Inc.
(10-09) Printed in U.S.A.
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