David Clark H3432 Ground Support Headset Overview:

David Clark H3432 Ground Support Headset from the Series 3400 line is designed to deliver crisp, clear communication and effective hearing protection in high-noise environments. Built with rugged construction and quality components, this dual-ear, over-the-head headset provides reliable performance and comfort for extended use in demanding ground support operations.

The H3432 is engineered for compatibility with David Clark Series 3100, 3400, and 3800 Intercom Systems as well as Series 3000 Mobile Radio Adapters. Its M7-A electret noise-canceling microphone ensures excellent speech intelligibility, while noise-attenuating ear cups provide clear, isolated reception through intercom or radio systems.

Comfort features include gel ear seals and a multi-chamber head pad designed to perform well in a wide range of temperatures and environments. Durable materials and precision fit adjustments make the H3432 well suited for long operational shifts.

David Clark H3432 Ground Support Headset Features:

• Crisp, clear communication in demanding environments
• Dual-ear, over-the-head headset design
• Noise-attenuating ear cups for clear isolated reception
• M7-A electret noise-canceling microphone for excellent speech intelligibility
• Microphone on/off switch located on the ear cup
• Patented hybrid wire-flex boom assembly with 280° rotation for left or right side placement
• Dynamic earphone elements
• Adjustable headband spring assembly for a customized fit
• Pivoting stirrup assemblies on both ear cups for precise positioning
• Undercut Comfort Gel ear seals cradle the ears for improved comfort
• Air-flow, 4-chamber pillow head pad helps eliminate pressure hot spots
• Passive noise attenuation rating of 23 dB
• Rugged and reliable construction
• Made in the USA

Technical Specifications:

• Weight: 14.1 oz (400 g)
• Comm Cord: 6 ft extended coil cord with 1/4" stereo plug
• Certified NRR: 23 dB (third-party certified)
• Dome Type: Lightweight ABS composite
• Hardware: Carbon steel, chrome finish
• Ear Impedance: 300 ohm each, wired in series
• Ear Sensitivity: 90 dB SPL re 1 mW @ 1 kHz
• Ear Frequency Response: 200 – 5,500 Hz
• Mic Impedance: 150 ohm nominal
• Mic Sensitivity: 400 mV +/- 6 dB into 150 ohm load @ 1 kHz for 114 dB SPL input
• Mic Frequency Response: 300 – 3,500 Hz
• Mic DC Supply Voltage / Source Resistance: 8–16 V, 470 ohm, not polarity sensitive
• Microphone Control: SPDT on/off switch