https://acousticresearchspeakers.net Thu, 23 Apr 2026 00:06:44 +0000 en-CA hourly 1 https://wordpress.org/?v=4.1.1 https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-5/ https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-5/#comments Thu, 23 Apr 2026 00:06:44 +0000 https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-5/ read more »]]>










The Acoustic Research AR90 is one of the most celebrated floorstanding speakers ever produced. Designed in the late 1970s under Teledyne’s stewardship of the AR brand, the AR90 was AR’s flagship 4-way loudspeaker system and represented the pinnacle of their acoustic suspension engineering. Featuring a 12″ woofer, a 6″ lower midrange, a 2″ upper midrange dome, and a 3/4″ tweeter, the AR90 delivers a remarkably coherent and musical soundstage that few vintage speakers can match. Its wide frequency response, tight bass reproduction, and smooth highs made it a reference-class speaker in its day and it remains highly sought after by audiophiles who know what they’re listening to. These are working, fully functional AR90s that have been actively enjoyed in a real hi-fi system. I’ve been running them with a NAD preamp/amp stack and they sound absolutely phenomenal: detailed mids, tight and extended bass, and smooth highs with zero distortion or rattling. That said, I want to be fully transparent. The foam surrounds on the woofers have some tears and small holes. This is extremely common on AR90s of this era as the original foam degrades over time. Despite the surround condition, both woofers are functioning and the bass response remains strong. Cabinets show age-appropriate cosmetic wear consistent with vintage speakers from this era. All drivers produce sound, tweeters and midranges are in great shape. What You’re Getting. This is a rare opportunity to own a pair of genuine AR90s, a speaker that competes with and often beats modern speakers costing several times more. Whether you want to recap the crossovers and reseal the surrounds for a full restoration or just plug them in and enjoy the music, these deliver.

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Hi thanks for viewing my items for sale. This unit has been tested is in great working condition. Shows very light wear and tear. I have two of these subwoofer plate amplifiers available. Any questions feel free to contact me.

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Elevate your audio experience with these vintage Acoustic Research Cube Book End Speakers. Crafted in the United States, the speakers have a timeless design that fits seamlessly into any room, delivering rich and authentic sound that brings your music and conversations to life. This listing includes a pair of two units, each meticulously built to showcase the iconic craftsmanship of Acoustic Research. The speakers come in a classic black finish that complements any décor, making them a perfect addition to your audio setup or a thoughtful gift for the audiophile in your life.

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Parting Out a pair of AR Acoustic Research AR-4 (not positive on the exact model number). Tweeters appears to have cracks in them. No rips in the woofers. Only one grill cloth.

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Acoustic Research ARW51 – 2.4GHz Modular Wireless 5.1 Speaker Adapter System. Condition: New – Open Box – In Origional Packaging. Description: a simple and convenient modular wireless adapter system that allows you to turn speakers in your home theater surround sound system into a wireless 5.1 system, eliminating the need to run wires across the room. The system consists of a wireless transmitter, 5 amplified speaker receivers, and a subwoofer receiver. The transmitter connects to your home theater and uses 2.4GHz technology to send uncompressed CD-quality audio to the receivers, to ensure you get nothing but dynamic audio with a wide dynamic range and a full frequency response. The transmitter can also hop from one channel to another to avoid interference. Each speaker receiver has an integrated 60W amplifier for powering a speaker. Standard 5-way binding post outputs let you connect the receivers to practically any home theater speakers. The subwoofer receiver has an RCA line output, and is designed to work with subwoofers that have an integrated amplifier. Multiple receivers can be tuned to the same transmitter channel if desired, perfect for multi-room music applications.

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Acoustic Research Portable Indoor/Outdoor Wireless Speaker, Black, AWSF9R. Scratch and Dent Item in Original Retail Box. Delivers high-quality sound with up to 12 hours of playtime on a rechargeable battery. Features an attractive lantern design, ideal for various outdoor settings. Equipped with IPX5 water resistance for durability in different weather conditions. Offers 7 light modes including Soft White, Bright White, Flicker, Flame, Soft Glow, Candlelight, and Aurora. Separate light and speaker controls with silicon buttons for easy operation and weather resistance. Includes 4 built-in soothing nature sounds: Forest, Waves, Running Stream & Rain. Attractive lantern design with handle for hanging or on-the-go.

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This pair of cabinets were my Dad’s. I had put wood preservative on them a few months ago. The cones were re-coned a few months ago. 1 sounds perfect, the other one needs to be pushed in to the cone and then is strong. I don’t know the problem, and I did not check both until after the re-coning. Voice coil is still intact as it has sound. The other high and mid range are good. Too heavy for me to move around. We’ll go over speakers when you come to look them over.

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Sound output has been confirmed; however, age-related deterioration is present, including remaining crackling noise especially from the attenuators. The speakers were previously professionally cleaned, but full restoration has not been completed. There is a corner chip and protective tape applied around front connections. Overall condition reflects heavy vintage use. Main Specifications: Brand: Acoustic Research Model: AR-3a Type: 3-Way Passive Speakers Acoustic Research AR-3a 3-way speaker system Oiled walnut cabinet finish Vintage audiophile reference model (circa 1973) Pair set (left and right speakers included) Passive bookshelf/stand-mount speakers Impedance/power details not specified A rare opportunity to own one of the most iconic vintage speakers in audio history. Ideal for restoration, collectors, or vintage hi-fi enthusiasts. If that, please let us know within 3 days you got the item.

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The AR-2a Acoustic Research Suspension Loudspeakers is a vintage pair of speakers from the United States brand AR. Known for their high-quality sound and classic design, these loudspeakers are perfect for anyone looking to add a touch of nostalgia to their audio setup. With their retro appeal and superior sound performance, these vintage speakers are sure to be a standout piece in any audio collection. Some scuffs and scratches.

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The Acoustic Research AR90 is one of the most celebrated floorstanding speakers ever produced. Designed in the late 1970s under Teledyne’s stewardship of the AR brand, the AR90 was AR’s flagship 4-way loudspeaker system and represented the pinnacle of their acoustic suspension engineering. Featuring a 12″ woofer, a 6″ lower midrange, a 2″ upper midrange dome, and a 3/4″ tweeter, the AR90 delivers a remarkably coherent and musical soundstage that few vintage speakers can match. Its wide frequency response, tight bass reproduction, and smooth highs made it a reference-class speaker in its day and it remains highly sought after by audiophiles who know what they’re listening to. These are working, fully functional AR90s that have been actively enjoyed in a real hi-fi system. I’ve been running them with a NAD preamp/amp stack and they sound absolutely phenomenal: detailed mids, tight and extended bass, and smooth highs with zero distortion or rattling. That said, I want to be fully transparent. The foam surrounds on the woofers have some tears and small holes. This is extremely common on AR90s of this era as the original foam degrades over time. Despite the surround condition, both woofers are functioning and the bass response remains strong. Cabinets show age-appropriate cosmetic wear consistent with vintage speakers from this era. All drivers produce sound, tweeters and midranges are in great shape. What You’re Getting. This is a rare opportunity to own a pair of genuine AR90s, a speaker that competes with and often beats modern speakers costing several times more. Whether you want to recap the crossovers and reseal the surrounds for a full restoration or just plug them in and enjoy the music, these deliver.

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