Pictured is the ANR (Active Noise Reduction) Kit. The kit is designed for you to fit into your own existing headsets.

Kit contents:-
1 replacement earphone/microphone cable with integrated power cable
1 set of Temper Foam Soundproofing
1 installation materials (internal wiring, solder, cable ties, heatshrink)
1 pair (Left & Right) replacement speakers
1 Installation/Operating manual

NB. Not included in this kit are Gel Ear Seals. We do recommend that these are used to ensure the most effective noise cancellation.

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Headset Compatability Chart

David Clark®
M-01 will fit all David Clark® "H-10" series headsets, except models 13.S / H-20-10. NB. We now stock a slimline kit which will fit the H-10-13.4

Flightcom®
M-01 fits models 4-DX and 4-DLX. Our system does not fit the Eclipse or 5-DX

Aviation Communications, Inc. (Avcomm)®
M-01 fits all, however, model AC 800 and 900 have a PTT switch in right side which must be removed.

Sigtronics®
M-01 fits only S-20, S-40, S-45 and S-65.

Pilot Avionics®
M-01 fits PA-20, PA-40 & PA-51. Our system does not fit PA 11-90.

Softcom®
M-01 fits all models. On model C-60 the PTT switch and the volume control in right side probably will have to be removed.

Telex®
M-01 fits the Pro-Air 2000, AIR 3500 and AIR 3100. Pro-Air 2000 requires Telex gel seal kit part #800027-001. Currently our instruction booklet does not cover Telex headsets, although most installations are similar.

Technical Specifications

General Description:
The ANR Kit is designed for maximum comfort in extremely high noise, low frequency environments. The use of advanced electro-acoustical noise reduction circuitry with a patented baffle-plate design provides one of the strongest active noise cancelling signals available. The acoustically balanced audio system (ABAS) amplifies the incoming audio signal to deliver a rich, high fidelity audio sound not found in comparable priced headsets.

General Data:
Noise cancelling bandwidth: 20 Hz through 800Hz
Operating voltage: 7.5 volts minimum - 10.0 volts maximum
Battery life:15 hours on 9 volts

Earphones (audio)
Impedence: 150 ohm
Rated input power: 100 mW nominal - 200 mW maximum
Frequency response (audio) 50 Hz ~ 20 KHz

Noise Attenuation

Below are the measurements in mm of a typical speakerboard. The board is 23mm deep and typically will need about another 10mm clearance for the cable/temper foam inserts etc.