AR9 Speakers (Acoustic Research) + JVC RX-509VTN Receiver

Model

AR9

Type

Floor Standing Speaker

Brand

Acoustic Research

- ALL speakers working in current condition. - Both (2) Midrange and All 4 Subwoofers replaced with OEM drivers direct from acoustic research about 20 years ago. Tweeters are original. A few drivers could be re-coned for optimal performance. - (2) Grills included (not shown) - JVC Receiver with speaker wiring included The AR9 was a large floor-standing, vertical, 4-way, 4-ohm loudspeaker with two 12-inch acoustic-suspension woofers, an 8-inch acoustic-suspension lower-midrange speaker, a 1½-inch upper-midrange dome speaker and a ¾-inch dome tweeter. Dimensions were 52 ¾”H x 15”W x 15 13/16”D with a net weight of 130 lbs. The crossover frequencies are 200 Hz, 1200 Hz and 7000 Hz. The AR9 was manufactured from 1978 until 1982, priced initially from $650/each in January 1978 to a high of $900/each at the end in 1982. Uses two (AR-3a/AR-11) 12-inch, high-excursion, low-resonance (18 Hz) woofers in an enclosure of 4¼ cu. Ft. AR wired the two 4-ohm, 12-inch woofers in parallel, giving them the desired additional output (6 dB) but a very low impedance in the region above and below system resonance. When room gain is added, the AR9 has prodigious bass output down to below 20 Hz.