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|
|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
|Dimensions||Width 368x height 1102x depth of 386mm|
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
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.