a new standard of excellence in a speaker of small size
The AR-7 is the smallest speaker system Acoustic Research has ever designed. It is purposely small.
Recognizing the space demands imposed by four channel stereo music systems, AR decided to develop a small speaker to permit installation in areas where our larger speakers are not appropriate. At the same time, this speaker must offer the extended range usually associated with speakers of much larger dimensions.
That the AR-7 has achieved both design objectives is clearly evident.
above: The accuracy of the sound is such that we show these power response
curves and guarantee each AR-7 speaker to match the curves within ± 2dB.
Such accurate, full frequency range performance from an enclosure of this size
did not come easily. It required years of development and state-of-the-art technology.
above: The size (9 3/4 x 15 3/4 x 6 1/4) is such that four AR-7's occupy less
cubic volume than a single AR-3a.
The woofer of the AR-7 uses such advanced design and manufacturing techniques that its low frequency response extends substantially below that of competitive speakers of far greater size.
The tweeter of the AR-7 is similar to the tweeter used in the highly acclaimed AR-6. It produces smooth, wide dispersion sound. Both the woofer and the tweeter use high temperature voice coils, permitting higher power handling capability.
Though the AR-7 was designed primarily with four channel stereo installations in mind, its accurate wide frequency response makes it a wise choice for high quality two channel stereo systems.
AR-7's come packed two to a box and sell for $60.00 each.
Acoustic Research, Inc. 24 Thorndike St., Cambridge, Massachusetts 02141, USA.
(Audio magazine, Feb. 1973)
Also see:
AR-7 loudspeaker (Equip. Profile, Feb. 1973)
AR (Acoustic Research) AR-7 loudspeaker (ad, May. 1974)
AR (Acoustic Research) AR-12 loudspeaker (Feb. 1977)
Altec Concept EQ loudspeaker (Sept. 1973)
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