https://acousticresearchspeakers.net Mon, 17 Aug 2026 20:53:48 +0000 en-CA hourly 1 https://wordpress.org/?v=4.1.1 https://acousticresearchspeakers.net/2026/07/acoustic-research-ar-11b-vintage-speakers-freshly-refoamed-yellow-tweeters/ https://acousticresearchspeakers.net/2026/07/acoustic-research-ar-11b-vintage-speakers-freshly-refoamed-yellow-tweeters/#comments Thu, 16 Jul 2026 07:09:30 +0000 https://acousticresearchspeakers.net/2026/07/acoustic-research-ar-11b-vintage-speakers-freshly-refoamed-yellow-tweeters/ read more »]]>




















Up for sale is a pair of Acoustic Research AR-11b three-way loudspeakers in great working condition. These are the classic late-70s successors to the legendary AR-3a, and this pair includes the rare, early-production YELLOW-CAPPED (yellow dome) tweeters – the version collectors specifically seek out, widely considered the best-sounding tweeter AR fitted to this series before switching to the later black domes. Fully functional – all drivers tested and working properly on both speakers. Woofers FRESHLY REFOAMED – new surrounds, ready for decades of service. Rare yellow-capped 3/4 dome tweeters, both original and working. Cabinets structurally solid and in great physical shape – no loose joints, chips, or damage. Finish needs refinishing/restoration – wear visible in photos; a great candidate for an easy veneer refresh. Original foam grilles were replaced at some point – current replacement grilles are shown in photos (the original AR foam grilles from this era commonly deteriorated and are rarely found intact). Please review all photos carefully – they are of the actual speakers and part of this description. Type: 3-way, 3-driver acoustic suspension loudspeaker. Woofer: 12 acoustic suspension (freshly refoamed). Midrange: 1.5 hemispherical dome. Tweeter: 3/4 hemispherical dome (rare yellow-cap version). Frequency Response: 27 Hz – 30 kHz. Crossover Points: 525 Hz / 5,000 Hz. Impedance: 4 ohms. Sensitivity: 86 dB (1W/1m). Recommended Amplifier Power: 25-150+ watts per channel. Dimensions (each): 25″ H x 13.9″ W x 10.75 D. Weight (each): approx. Acoustic Research invented the acoustic suspension woofer and the dome tweeter, and the AR-11 line represents the refinement of both. The AR-11b uses an improved version of the 12″ woofer that started it all, paired with the famous hemispherical dome midrange from the AR-3a and AR’s improved 3/4″ dome tweeter. The result is deep, flat, honest bass and the smooth, wide-dispersion top end AR was famous for. The early yellow-dome tweeters found on this pair are increasingly hard to find in working condition – many surviving AR-11s have had them replaced with later or aftermarket domes. These are all original. With the woofers freshly refoamed and everything working as it should, these are ready to play – or refinish the cabinets and have a truly stunning pair of classic American loudspeakers. These are large, heavy speakers (50 lbs each) – they will be professionally double-boxed and fully insured. Photos are of the actual items and are part of the item description. Check my other listings for more vintage hi-fi gear.

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Please see pics, you will receive exactly what is shown.

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Pair of nice shape Acoustic Research AR18S vintage bookshelf speakers. 8 original woofers serviced with new foam surrounds. Original tweeters work perfectly. Everything works and sounds great. Matching serial number 042538. They measure roughly 16.5″ tall, 10.1″ wide, and 6.7 deep, each, with the grills on. Please browse through the images and video for overall condition. Thank you for looking.

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The Vintage Acoustic Research AR14 200004-2 10 Woofer Speaker is an original replacement piece for vintage audio enthusiasts looking to restore or upgrade their speaker systems. Made by the renowned brand Acoustic Research, known for their high-quality audio products, this 10 woofer speaker is a sought-after component for collectors and audiophiles alike. With materials sourced from the United States, this speaker is sure to offer a nostalgic and authentic sound experience for those seeking to recreate the audio of yesteryears.

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Pair of RDL Acoustics speakers. 15 Pair of RDL (Research Development Laboratories) speakers. 15″ woofer, 6″ midrange, and dual 3 tweeters in each cabinet. Woofers are refoamed with the correct size and orientation surrounds. Everything works and sounds great. Surprisingly midrange forward for a speaker with a 15 woofer. 25.75″ tall, 17.8″ wide, and 13.5 deep. Please browse through the images and video for overall condition. Thank you for looking.

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This Acoustic Research AR-6 woofer is a top-quality replacement part that has been professionally refoamed and tested to ensure excellent performance. You can trust that this speaker will provide reliable and high-quality sound for your vintage audio system. Designed for use with Acoustic Research AR-6 speakers, this woofer is the perfect replacement part for anyone looking to restore their vintage audio setup. Whether you’re a professional audio engineer or a DIY enthusiast, this speaker is sure to impress with its superior sound quality and durable construction. Don’t settle for anything less than the best when it comes to your vintage audio setup – choose the Acoustic Research AR-6 woofer for a truly exceptional listening experience.

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JUST INSTALLED NEW SURROUNDS AND LISTENED TO THEM YESTERDAY ALL DAY OUTSIDE. Close serial numbers too, only 1 number apart. Everything is working as it should and they sound so sweet. Some water marks on them and small scratches but will sand right out if you want. Bottom of 1 has some veneer peeling that I will reglue. Grills are not original but look great. The Acoustic Research AR-11 is a 3-way, 3-driver floor-standing speaker system known for its acoustic suspension design. Key specifications include a. It features a 12-inch woofer, a 1.5-inch hemispherical dome midrange, and a. 75-inch hemispherical dome tweeter. Here’s a more detailed breakdown. 3-way, 3-driver, acoustic suspension (sealed enclosure). 1.5-inch hemispherical dome midrange. 13.94″ x 25″ x 10.75 (354 x 635 x 273mm). 50 lbs (22.6kg). Typically features a walnut veneer finish. Removable foam grill for acoustic transparency.

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ACOUSTIC RESEARCH AR3a European Cab NEEDS REFOAMED & TLC. Beautiful pair of ACOUSTIC RESEARCH AR3a (Stands NO included). Working condition with difficulties but sound comes out of all drivers. Please refer to the pictures provided. I got them from the original owner. These beauties needs some TLC This also means that the surround needs to be refoamed. If you have any questions or request please let me know.

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Beautiful pair of ACOUSTIC RESEARCH AR3a. Working condition with difficulties but sound comes out of all drivers. Please refer to the pictures provided. I got them from the original owner. These beauties needs some TLC This also means that the surround needed to be replaced. If you have any questions or request please let me know.

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This pair of speakers were what my father used as his sound system they have been refoamed and they sound amazing. Vintage 1980s pair of ROR Speaker System D speakers for sale. Cosmetics: Black finish cabinetry featuring scuff marks and discoloration spots, particularly on the top side of each speaker. Refer to the photos for closeups. Speaker grills, made of cloth & wood, are excellent. Made in USA by Acoustic Research Inc. Each speaker measures 10″ X 10″ X 13.5.

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