Telex HD-3A User manual

HD-3A
Dual-Sided Headset with 21dB NRR, Flexible Dynamic Boom Mic, & A4F Connector
The HD-3A is a dual-sided monaural hearing protector type headset with noise-canceling dynamic micro-
phone. EPA rated NRR of 21 dB. The polyurethane earcups house 150Ω dynamic elements and feature an
easily adjustable headband. The 6’ cord is coiled for tangle-free use.
Wiring Diagram

HD-3A Specications
Connector Termination
XLR 4-pin Female coiled cord
Type
Dual Sided Monaural
Mic Type
Dynamic Noise-Canceling
Mic Sensitivity
-65dBV/Pa @1cm
Mic Frequency Range
200Hz - 6kHz
Mic Impedance
150Ω
Speaker Sensitivity
95dB SPL @3kHz, 1mW
Speaker Frequency Range
1kHz - 10kHz
Speaker Impedance
150Ω
Weight
17oz. (not including cord)
Cord Length
1.75 ft. retracted, 9 ft. extended
Ordering Information
HD-3A
Dual-Sided Headset with 21dB NRR, Flexible Dy-
namic Boom Mic, & A4F Connector
Catalog Number: 63700-011
This specications information is preliminary and is subject to change without notication.
Brand names mentioned are the property of their respective companies.
Contact Information
Telex Communications, Inc.
12000 Portland Avenue South
Burnsville, Minnesota 55337
Telephone: 877·863·4169
Fax: [phone]
Form Number: 38109-211 Rev C
Date: December, 2007