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Amplifiers/Converters??

Wireless transmitter/amplifier works without audio degradation

Posted: 07 Jan 2005 ?? ?Print Version ?Bookmark and Share

Keywords:amphony? consumer electronics show? audio transmitter? amplifier? model 1520?

Amphony unveiled at this year's Consumer Electronics Show its 5.8GHz digital wireless audio transmitter/amplifiersModel 1520 and 1550, which are capable of transmitting audio to loudspeakers wirelessly and without any audio degradation.

"Both wireless amplifiers connect directly to any regular passive loudspeakers, such as the surround speakers within home theater settings and eliminate speaker wires between the DVD player and the speakers," said Gunter Fellbaum, Marketing Director at Amphony. "Each wireless amplifier receives a 5.8GHz audio signal that is transmitted in a digital format up to 150 feet away from the transmitter."

Each amplifier measures 5-by-3.5-by-2 inches and is easily mountable to a speaker. The Model 1550 is rated at 50W peak output power per channel, features a 0.005 percent audio distortion and 92dB signal-to-noise ratio, and provides a frequency response of 1Hz to 23kHz. Meanwhile, the Model 1520 is rated at 20W peak output power and has a 0.03 percent audio distortion.

Fellbaum added that to minimize size and heat dissipation, they incorporated digital class-T amplification that "provides the power efficiency of conventional class-D digital amplifiers at a far lower audio distortion."

The Model 1520 set includes one stereo audio transmitter, which connects to either a line-level or an amplified speaker audio output and one wireless stereo amplifier. This set has a target street price of $129. The Model 1550 set includes one stereo transmitter and two wireless mono amplifiers and has a target street price of $199. Additional amplifiers can be purchased separately to operate from the initial transmitter.




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