Acoustic Research

The company that put real bass in a bookshelf

History

Acoustic Research (AR) was founded in Cambridge, Massachusetts in 1954 by Edgar Villchur and Henry Kloss. The company's mission was revolutionary: to build speakers that accurately reproduced the original sound without coloration—a radical departure from the horn-loaded and bass-reflex designs dominant at the time.

Villchur, an audio engineer and educator, had developed the acoustic suspension principle in the early 1950s. This design sealed the woofer in an airtight enclosure, using the trapped air as a restoring force instead of a mechanical spring. The result was deep, accurate bass from a relatively small cabinet—unprecedented in the industry.

The AR-1 (1954) was the world's first acoustic suspension loudspeaker. While expensive ($185—equivalent to over $2,000 today), it achieved bass response below 40Hz from a cabinet of just 1.6 cubic feet. The AR-1 established AR as a serious engineering company and attracted audiophiles seeking accurate sound.

The AR-3 (1958) refined the acoustic suspension design and added a dome midrange and tweeter—another industry first. The AR-3 became the reference standard for accurate sound reproduction and remained in production for over two decades.

The AR-3a (1967) improved upon the AR-3 with better drivers and crossover. It became AR's best-selling model and is still highly sought after today. The company also pioneered the AR-LST (Living Stereo Theater), a four-way speaker designed for consistent sound throughout a room.

Teledyne acquired AR in 1967, and the company changed hands several times over subsequent decades. While original AR speakers are no longer manufactured, the acoustic suspension principle remains fundamental to speaker design.

Key Facts

Legendary Products

AR-1 (1954)

The world's first acoustic suspension loudspeaker. The AR-1 used a 12\" Altec 755A woofer in a sealed enclosure, achieving bass response to 35Hz from a compact cabinet. It proved that deep bass didn't require massive horn-loaded enclosures.

AR-3 (1958)

The speaker that established AR's reputation for accuracy. The AR-3 combined an acoustic suspension 12\" woofer with dome midrange and tweeter—an industry first. It became the reference standard for natural sound reproduction.

AR-3a (1967)

An improved version of the AR-3 with better drivers and an improved crossover network. The AR-3a became AR's most successful model, selling over half a million pairs over its long production run.

AR-LST (1971)

The \"Living Stereo Theater\" was a four-way speaker designed to provide consistent frequency response throughout a room. Using multiple midrange and tweeter drivers, it was ideal for large spaces and professional monitoring.

Classic Models Reference

Sound Signature

AR speakers are characterized by:

• Accuracy - Faithful to the original recording
• Smooth response - No peaks or harshness
• Deep, tight bass - Acoustic suspension advantage
• Wide dispersion - Consistent sound throughout room
• Musicality - Natural, uncolored presentation

Collecting AR

Vintage AR speakers are valued for:

• Historical significance - Changed speaker design forever
• AR-3 and AR-3a - Classic acoustic suspension designs
• AR-LST - Rare and desirable for large rooms
• Original condition - Unmolested examples increasingly rare
• Restoration potential - Simple designs, available parts

Most collectible models:

• AR-3 - The original legend
• AR-3a - Best-selling classic
• AR-LST - Rare and unique
• AR-9 - Late-period flagship

Restoration Tips

Common AR service items:

• Replace foam surrounds (most AR woofers need this)
• Check crossover capacitors (replace with film caps)
• Verify tweeter functionality (AR tweeters are delicate)
• Clean pots on L-pads (variable level controls)
• Refinish cabinets (veneer work relatively simple)
• Replace grille cloth (match original texture)

Competitors & Comparisons

AR vs KLH: Henry Kloss founded both; similar acoustic suspension philosophy

AR vs Advent: Similar market positioning; both founded by Kloss

AR vs JBL: Opposite approaches; AR accuracy vs JBL dynamics

All Models in Archive (70)

None

• 9LS
• AR-6BX

Speakers

• Acoustic Research - The Speaker Revolution

Audio

• AR-2a
• AR-2ax
• AR-3b
• AR-4
• AR-4x
• AR-5
• AR-7
• AR-9

Speakers

• AR - 1967-1976
• AR-1 - 1954
• AR-10π - 1978
• AR-10Π (AR-10-PIE) - 1967
• AR-12 - 1974
• AR-18 - 1978
• AR-18BX - 1980
• AR-18BXI - 1982
• AR-19 - 1994
• AR-1W - 1954
• AR-1x - 1958
• AR-28S - 1992
• AR-3 - 1959
• AR-303a - 1994
• AR-30B - 1982
• AR-38BXi - 2000
• AR-48BX - 1993
• AR-4ax - 1969
• AR-58BXI - 1988
• AR-8 - 1973
• AR-8B - 1968
• AR-8BX - 1983
• AR-90 - 1978
• AR-91 - 1978
• AR-915 - 1985
• AR-94 - 1978
• AR-94S - 1980
• AR-98LSI - 1987
• AR-9LSI - 1993
• AR-EB101 - 1974
• AR3a
• research-206ho - 1975
• research-ar-17 - 1978
• research-ar-25 - 1992
• research-ar-3 - 1958
• research-ar-338 - 1975
• research-ar-3a - 1967
• research-edge-sequel - 1988
• research-m1 - 1995
• research-m2 - 2012
• research-s20 - 1987
• research-tsw-100 - 1987
• research-tsw-110 - 1987
• research-tsw-310 - 1987
• research-tsw-410 - 1988
• research-tsw-510 - 1988
• research-tsw-610 - 1989
• research-tsw-710 - 1989
• research-tsw-810 - 1988
• research-tsw-910 - 1989

Turntables

• research-the-ar-turntable - 1961