Tag Archives: Acoustic Research

Acoustic Research AR-90 Speakers

4 Dec

Acoustic Research AR-90 Speakers

 

Acoustic Research AR-90 Speakers

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 AR-9 is the big brother to this one. The AR-90 and AR-9 share the same mid and high drivers, but 2 x 12" woofers in each cabinet instead of 2 x 10".

System 4 ways, 5 speaker acoustic suspension system, and a Tallboy type
Use unit For low-pass: 25cm corn type x2
For inside low-pass: 20cm corn type
a crown -- : for regions -- a 3.8cm dome shape
For high regions: 1.9cm dome shape
Frequency response 23Hz - 30kHz
Low-pass play frequency 32Hz -3dB
System Q 0.8
Output sound pressure level 87dB/W/m
Impedance 4ohms (a minimum of 3.2ohms)
The continuation maximum input 150W
The maximum input 300W
Crossover frequency 200Hz, 1.2kHz, 7kHz
Level control Inside low-pass: Three-step switching
mid-high range: three-step switching
High region: Three-step switching
Content volume 90L
Dimensions Width 368x height 1102x depth of 386mm
Weight 37kg

 

[...]

Acoustic Research AR-XA Turntable Unboxing

18 Oct

AR Turntable

Acoustic Research AR-XA Turntable Unboxing

Ever wondered what it would have been like to open a brand new Acoustic Research AR-XA turntable back in 1962?  Well, thanks to a fastidious original owner, and Norbert (photo credit) we can get a look.  The following are some shots he took of a very well preserved AR turntable.  There's also an advertisement for the table at the very end.  You'll notice that it included in the box was the headshell, mounting hardware, and that cool AR stylus force gauge.

Check out the full unboxing below!

[...]

Acoustic Research AR-3A Speakers

29 Apr

Acoustic Research AR-3A Speakers

Photo Credit: Paul F. Moore

Acoustic Research AR-3A Speakers

The AR-3 was replaced by the revised AR-3a speaker which featured ah new dome midrange and tweeter reduced in dimensions, for even better mid and high frequency dispersion. On September 13, 1993 an AR-3 was placed on permanent display in the Information Age Exhibit of The National Museum of American History at The Smithsonian Institution in Washington, DC.

[...]

Acoustic Research AR-3A Speakers

4 Aug

Acoustic Research AR-3A Speaker

Acoustic Research AR-3A, full-range speaker system in enclosure.

Dimensions: 25 by 14 by 11 3/8 inches. Price: $295. Manufacturer: Acoustic Research, Inc., 10 American Drive, Norwood, Mass. 02062

By way of background, the AR-3(and before it, the AR-1) has been regarded as the granddaddy of acoustic or air suspension speaker systems, based on a woofer design that was introduced back in 1954.  You have to drive the AR-3A with some what more amplifier power than most speakers take to get it to put out the "big sound," especially in a large or acoustically damped room.

How does an AR-3A compare to an AR-3? The difference may vary from fairly apparent to quite subtle, depending on the program material. Music which is rich in predominantly upper midrange tones and fairly open in texture probably would demonstrate the difference best. The new speaker seems to be free of a certain kind of "calling attention to itself" in this region that the AR-3, by direct comparison, occasionally exhibits. Specifically, the AR-3 has been criticized for emphasizing the lower midrange while, by comparison, depressing the upper midrange. In the AR-3A, we can detect no aural grounds for such criticism.

Check out the rest of the pics after the break.

[...]