Infinity RS-4.5 loudspeaker system Specifications

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Description: Three-way sealed-box loudspeaker system with active Bi-Channel crossover/equalizer for connection between preamp and power amp(s); Drive-units: two 12" Watkins, dual–voice-coil woofers, four EMIM (electromagnetic-induction-midrange) units and four EMIT ribbon tweeters (one rear-facing) Crossover frequencies: 150Hz, 5kHz (lower crossover point adjustable). Frequency response: 24Hz–32kHz ±3dB. Nominal impedance: 4 ohms. Power handling: 100Wpc minimum power required.
Dimensions 65" H by 27" W by 15" D (loudspeaker); 10" D by 14" W by 2" H (equalizer); loudspeaker weight (each): 150 lbs.
Serial numbers of review samples: 1002580/1.
Price: $2000/system (1979); no longer available (2006).
Manufacturer: Infinity Systems, Inc., Canoga Park, CA (1979); Infinity Systems, 250 Crossways Park Drive, Woodbury, NY 11797 (2006). Tel: (800) 553-3332. Web:

Infinity Systems
250 Crossways Park Drive
Woodbury, NY 11797 (2006)
(800) 553-3332