

Exclusive M7-A, the most advanced noise-cancelling microphone available. | Molded cords made to exceptional pull and flex standards. | |
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| Install Adobe Acrobat Reader to download the above parts list & schematics .pdf file.   | ||||||||||
Backed by our 5-Year Guarantee and our exceptional customer service policy.
Quality-made in the U.S.A. ![]()
NRR | NOISE ATTENUATION DATA - MODELS H20-10 and H20-16 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Frequency (Hz) | 125 | 250 | 500 | 1000 | 2000 | 3000 | 4000 | 6000 | 8000 | |
| Attenuation (dB) | 14.7 | 19.9 | 24.7 | 29.6 | 32.0 | 35.2 | 37.9 | 36.3 | 36.1 | |
| Standard Deviation | 2.1 | 1.9 | 1.9 | 2.5 | 3.2 | 3.3 | 3.4 | 4.1 | 4.1 | |
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Sandown Wireless
P.O. Box 564
East Hampstead, NH 03826
Tel: 603-548-0125
Fax: 603-887-2117


