Model H10-56HXL Aviation Headset

• Extremely effective at blocking out low-frequency sound associated with helicopters
• Battery Power Module – One 9 volt battery for up to 25 hours of operation
• Super-soft head pad
• Larger, yet lighter, undercut Comfort Gel ear seals
• Pilot selectable Automatic Shut-Off feature
• Coil Cord (5-foot extended) with a 10-pin quick release connector
• Same headset can be used with optional panel mount (H10-56XP)
• Dual volume controls let you adjust the level for each ear
• Exclusive, patented flex/wire boom for easy, precise microphone placement
• Made in USA
• FAA TSO Approved C57A, C58a
• NSN 5965-01-447-6430

Ear coupling	Around-the-ear
Hardware	Steel
Earphone Plug	U-174/U
Mic Plug	U-174/U
Connection Cable	~ 5 ft. (1.5 m) coil cord
Weight w/o cable	~ 22 oz. (624 g)
Dome type	ABS
Earphone Sensitivity	90 dB SPL on flat plate coupler, re 1mW input @1KHz
Earphone Type	Dynamic (ENC)
Ear Impedance	Monaural,150Ω nominal, stereo, 300 ohms nominal per side
Ear Freq Response	100 – 5,500 Hz
Microphone principle	M-7A Amplified Electret
Mic Impedance	50Ω +/- 20%
Mic Sensitivity	400mV+/-6dB into 150Ω load @ 1kHz for 114dB SPL input
Mic Freq Response	300Hz – 3.5KHz per RTCA DO 214
Mic DC Supply V.	8-16V, not polarity sensitive
Source Resistance	470Ω