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

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

HD-3A Specications

Speaker Frequency Range

1kHz - 10kHz

Speaker Impedance

150Ω

Weight

17oz. (not including cord)

Cord Length

1.75 ft. retracted, 9 ft. extended

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

Ordering Information

HD-3A

Dual-Sided Headset with 21dB NRR, Flexible Dy­namic 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.