hifi engine

Manual Library / Acoustic Research

Acoustic Research AR-90

Multiple Driver Reference Loudspeaker System (1979)

add a review add a review

Acoustic Research AR-90


The Acoustic Research AR-90 are very high precision devices, designed and built to tolerances comparable only to professional studio microphones.

They far exceed the performance capabilities of the classic laboratory reference standard and AR LSTs.

All of the modern technology in speaker design, as well as the most sophisticated of computer techniques, were used, not only in the development, but continually throughout their design and manufacture.

The three most distinctive applications of this technology in the AR-90s are the Acoustic Blanket, the vertical, upper-range driver array, and the positioning of the two woofers, one on each side of the enclosure.

The former two insuring unprecedented imaging and precision of localization and the latter unequalled flat frequency response in any listening environment, particularly at lowest music frequencies.

Indeed, the clarity of the AR-90s will make you aware of limitations in associated equipment, including the finest electronics. As a result, any improvements in the chain preceding the AR-90 will seem to continually improve the overall performance.


Type: 4 way, 5 driver loudspeaker system

Frequency Response: 23Hz to 30kHz

Power Handling: 250W

Recommended Amplifier: 50 to 300W

Crossover Frequency: 200, 1200, 7000Hz

Impedance: 4Ω

Sensitivity: 87dB

Bass: 2 x 250mm acoustic suspension

Midbass: 1 x 200mm acoustic suspension

Midrange: 1 x 38mm hemispherical dome

Tweeter: 1 x 19mm hemispherical dome

Dimensions: 1102 x 368 x 386mm

Weight: 37kg


instruction/owners manual   English -

Related Catalogues

Truth in Listening

If you have any problems opening files please read the download FAQ. All files are provided under strict licence and reproduction without prior permission or for financial gain is strictly prohibited.

If you have additional documentation please consider donating a copy to our free archive.


AR 90 Black Touch Up Paint?

What brand of black paint did AR use on the AR 90s? I have a pair that need some touching up.

This website is not affiliated with or sponsored by Acoustic Research. To purchase AR-90 spares or accessories, please contact the company via their website or visit an authorised retailer.