David Clark Aviation Headset, Headset-Mic, Over-The-Head, Helicopter, H10-36, Use H10-36=3D

The David Clark 12508G-20 Aviation Headset is an over-the-head headset designed specifically for helicopter use. This model features a molded cord assembly built to exceptional pull and flex standards, ensuring durability and reliability in demanding environments. It is equipped with a 5-foot extended coil cord and a single plug for easy connectivity.

FEATURES
• Molded cord assembly designed for exceptional pull and flex standards
• Helicopter version of the H10-30, providing tailored performance for aviation applications
• Certified Noise Reduction Rating (NRR) of 24 dB for effective hearing protection
• Exceeds RTCA/DO-214 standards for aviation headsets
• Five-year warranty for peace of mind
• Made in the USA, ensuring high-quality manufacturing
• FAA TSO Approved C-139 and C57B for compliance with aviation safety standards

BENEFITS
• Provides clear communication and effective noise cancellation in helicopter environments
• Durable construction ensures long-lasting performance, even in rigorous conditions
• Comfortable design with super-soft head pad and larger, lighter Comfort Gel ear seals for extended wear
• Advanced M-7/DC noise-canceling microphone for superior audio clarity

SPECIFICATIONS
• Ear Coupling: Around-the-ear
• Hardware: Steel
• Connector Type: U-174/U
• Connection Cable: ~ 5 ft. (1.5 m) coil cord
• Weight (without cable): ~ 20 oz. (567 g)
• Dome Type: ABS
• Characteristic SPL: ~95 dB SPL (1 kHz, 1 mW) at maximum volume nominal
• Total Harmonic Distortion (THD): < 1% at 110 dB SPL (300 - 3,000 Hz)
• Earphone Type: Dynamic
• Ear Impedance: 150Ω (300 each; wired in parallel)
• Ear Frequency Response: 200 - 5,500 Hz
• Microphone Principle: M-7/DC Amplified Electret
• Mic Sensitivity: 400 mV +/- 6 dB into 150Ω load @ 1 kHz for 114 dB SPL input
• Mic Frequency Response: 300 Hz – 3.5 kHz per RTCA DO 214
• Mic DC Supply Voltage: 8-16V, not polarity sensitive
• Source Resistance: 470Ω