Acoustic Research 스피커의 최고봉인 AR-1 스피커입니다.
1954년도 에드가 M. 웰처, 페리 E. 크로스, 말콤 S, 로위 등이 보스턴 외곽에 어쿠스틱 리서치社 설립하여
스피커 AR-1($185, 12인치 우퍼/ 8인치 콘 미드 베이스)을 생산했습니다.
시리얼번호 만삼천번대로 흔치 않은 연번이며 초기형 민자 우퍼가 들어가 있습니다.
중요한 755A 상태 크릭 없이 깨끗하며 색깔 일치하고 수리 경력 없이 좋은 컨디션 유지하고 있으며
함마톤 도색이 아닌 초기형 쫄쫄이 버전으로 번호대도 근사치입니다.
케비넷 각 깨진데 없으며 어튜네이터 작동상태 및 오리지널 그릴 등은 완벽하고 상태 아주 좋습니다.
011-772-1919
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▶ 자세한 사진은 "다음"(daum)이나 "네이버"(naver)에서 오디오마트 검색하시면 더 보실 수 있습니다.
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AR-1
In 1954, Acoustic Research introduced the small AR-1 bookshelf loudspeaker that used the acoustic suspension principle developed by the company co-founders.
The acoustic-suspension woofer (or “air suspension” woofer) uses the elastic cushion of air within a sealed enclosure to provide the restoring force for the woofer diaphragm.
This principle revolutionised the loudspeaker industry in the late fifties because it provides a way to design a small speaker system (instead the refrigerator sized cabinets previously used to get halfway decent bass) with effective and more linear low frequency response.
It will results very clean reproduction of deep-bass tones by drivers with relatively small cones (e.g. smaller than 12-16 inches in diameter) not mounted in a horn or other increased coupling at low frequencies enclosure.
The acoustic suspension enclosure has one disadvantage: it is less efficient as the conventional and more large speakers (which in the fifties were driven by 10-20 watts tube amplifiers).
Instead of 10 or 20 Watts, this new loudspeakers needed a more powerful amplifier.
The Model AR-1 was showed in September, 1954, at New York Audio Fair. The 12” woofer, designed and built by AR was coupled initially with 8” high frequencies driver produced by Altec and based on Western Electric design,. Both units were in a sealed 3/4-inch thick plywood cabinet filled with fiberglass. Lately the high frequencies driver was replaced by one cone driver for mid-high frequencies.
Dimensions: 25" x 14" x 11"
Weight : 50 lbs
The speakers should be used in horizontal position
