17
6 Specifications
7.1 System Performance
7.2 Transmitter
7.3 Headphones
7.4 Standards
7.5 Dolby, Lexicon
Modulation: FM
Carrier frequency band: 864 MHz or 915 MHz (USA only) (LPD band)
Power supply: 9 VDC, 500 mA
Radiation angle: 360°
Weight: HEARO 777 QUADRA: approx. 17.6 oz. (500 g)
HEARO 777 QUADRA DELUXE: approx. 33.5 oz. (950 g)
Max. range: approx. 330 ft. (100 m)
Power supply: 2 x 1.2 V AAA size NiMH rechargeable batteries
(supplied) or 2 x 1.5 V AAA size dry batteries
Battery life: approx. 20 hours (NiMH rechargeable batteries)
Frequency range: 18 Hz to 24,000 Hz
Max. SPL: ~125 dB SPL
Weight: approx. 11.3 oz. (320 g)
Distortion: <1%
Type: semi-open dynamic headphones
This equipment conforms to standards EN301357-2 (7-2000), EN301487-09 (9-2000), EN 60950:1992 +
A1:1993 + A3:1995 + A4:1997 + A11:1997.
Manufactured under license from Dolby Laboratories. "Dolby", "Pro Logic", and the double-D symbol are
trademarks of Dolby Laboratories.
LOGIC7 and the LOGIC7 logo are registered trademarks of Lexicon, Inc., A Harman International
Company.
AKG warrants AKG products against evident defects in material and workmanship for a period of two
years from the date of original purchase for use. This Warranty does not cover damage resulting from
misuse or abuse, or lack of reasonable care, or inadequate repairs performed by unauthorized service
centers. Performance of repairs or replacements under this Warranty is subject to submission of the sales
slip. Shipment of defective items for repair under this Warranty will be at the customer’s own risk. This
Warranty is valid for the original purchaser only.
Limited Warranty (valid in the United States only)
AKG warrants AKG products against evident defects in material and workmanship for a period of one
year and agrees to repair or, at our option, replace any defective unit without charge for either parts or
labor.
This Warranty does not cover dry or rechargeable batteries.
Important: This Warranty does not cover damage resulting from accident, misuse or abuse, lack of rea-
sonable care, the affixing of any attachment not provided with the product, loss of parts, or connecting
the product to any but the specified receptacles. This Warranty is void unless service or repairs are per-
formed by an authorized service center. No responsibility is assumed for any special, incidental, or con-
sequential damage. However, the limitation of any right or remedy shall not be effective where such is
prohibited or restricted by law. Simply take or ship your AKG products prepaid to our service department.
Be sure to include your sales slip as proof of purchase date. (We will not repair transit damage under the
no-charge terms of this Warranty.)
Note: No other warranty, written or oral, is authorized by AKG Acoustics.
This Warranty gives you specific legal rights, and you may also have other rights which vary from state
to state. Some states do not allow the exclusion or limitation of incidental or consequential damage or
limitations on how long an implied warranty lasts, so the above exclusion and limitations may not apply
to you.
8 Warranty Conditions
