Having the convenience of wireless audio set-up doesn't necessarily mean investing in a whole new sound system. Shown recently at IFA in Berlin and CEDIA in Denver, JBL's On Air WEM-1 Wireless Expansion Module solves the problem by enabling any speaker to operate wirelessly up to a range of around 70 feet. The USD$359 expansion system consists of a transmitter module which connects to the audio source (this includes portable media players), a receiver/amplifier unit that connects to a pair of speakers and a remote control. The company has also introduced two new subwoofer units that incorporate the same technology - the 400-watt ES250PW and the 300-watt ES150PW.
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