Acoustic Research AR-8B loudspeakers

Acoustic Research proudly presents three types of loudspeaker systems and one great sound.

This model of speakers - the AR-8b - exemplify a fundamental belief we have held through nearly three decades of acoustic research. Listeners whose system options are highly restricted by budgetary considerations need not be deprived of true quality sound. These B-series acoustic suspension speakers use long throw woofers with energy absorbent diaphragms damped to an extremely low Q. the bass stays tight and clean, even at 75 watts of power on the model 8b. For added protection during peak power surges, the 1-1/4-inch high range drivers are cooled with magnetic fluid and fitted with S-Shaped lead outs.

 

AR-8B Specifications

System Type:  Bookshelf acoustic suspension, 2-way system with drive units in vertical array

Drive Units:

LF :  150 mm (6") long-throw acoustic suspension woofer

HF :  32 mm (1-1/4") liquid cooled cone high range driver

Voltage Sensitivity:  2,83 watts produces 88 dB SPL at 1 meter on axis

Efficiency:  1 watt produces 88 dB SPL a 1 meter on axis

Power Requirement:  10 watts per channel minimum

Power Handling Ability:  maybe used with amplifiers rated at up to 75 watts per channel

System Frequency Response:  -3 dB (half power) points at 74 Hz and at 22,000 Hz

System Low Frequency Performance:  -3 dB at 74 Hz with an effective Q at resonance of 85

Impedance:  8 Ω  nominal

Crossover Network:  Woofer has a 12 dB/octave machanical crossover. High range has a first order electrical network plus mechanical slope to give a total of 18 dB/octave

Crossover Frequency:  2,000 Hz

Cabinet Internal Volume:  7,17 litres (25 cu.ft)

Cabinet Dimensions (W x H x D):  241 x 375 x 159 mm (9-1/2" x 14-3/4" x 6-1/4")

Cabinet Finish:  Walnut or oak grain vinyl veneer

Weight:  4,8 kg (10,5 lbs) 1 speaker; 10,9 kg (24 lbs) 2 speakers packed in carton (shipping)