https://acousticresearchspeakers.net Fri, 05 Jun 2026 16:40:48 +0000 en-CA hourly 1 https://wordpress.org/?v=4.1.1 https://acousticresearchspeakers.net/2026/05/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-9/ https://acousticresearchspeakers.net/2026/05/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-9/#comments Thu, 21 May 2026 03:44:04 +0000 https://acousticresearchspeakers.net/2026/05/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-9/ 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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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.

]]> https://acousticresearchspeakers.net/2026/05/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-8/feed/ 0 https://acousticresearchspeakers.net/2026/05/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-7/ https://acousticresearchspeakers.net/2026/05/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-7/#comments Fri, 08 May 2026 02:32:44 +0000 https://acousticresearchspeakers.net/2026/05/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-7/ 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.

]]> https://acousticresearchspeakers.net/2026/05/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-7/feed/ 0 https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-6/ https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-6/#comments Thu, 30 Apr 2026 02:03:09 +0000 https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-6/ 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.

]]> https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-6/feed/ 0 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.

]]> https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-5/feed/ 0 https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-4/ https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-4/#comments Fri, 17 Apr 2026 11:54:44 +0000 https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-4/ 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.

]]> https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-4/feed/ 0 https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-3/ https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-3/#comments Thu, 09 Apr 2026 23:35:43 +0000 https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-3/ 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.

]]> https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-3/feed/ 0 https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-2/ https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-2/#comments Thu, 02 Apr 2026 11:14:45 +0000 https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-2/ 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.

]]> https://acousticresearchspeakers.net/2026/04/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional-2/feed/ 0 https://acousticresearchspeakers.net/2026/03/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional/ https://acousticresearchspeakers.net/2026/03/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional/#comments Thu, 26 Mar 2026 08:06:12 +0000 https://acousticresearchspeakers.net/2026/03/rare-acoustic-research-ar90-legendary-vintage-hi-fi-speakers-fully-functional/ 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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These 4-way units feature front-facing tweeter, midrange, and woofer drivers, plus a rear-firing powered subwoofer. Ideal for vintage audio collectors or restoration enthusiasts seeking rich, balanced sound with deep bass. All drivers tested and verified. Subwoofer amps functional, no hum or distortion. Cabinets structurally sound with minor cosmetic wear. Grills intact, no major snags or warping. Non-invasive cleaning and inspection. No driver replacements or crossover mods. Ready for plug-and-play use or legacy handoff. ? Dimensions (each speaker). Height: 42? Width: 11? Depth: 15? Weight: 50 lbs.

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