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Please check the Photo. AR-3a Acoustic Research Speaker Pair. A legendary masterpiece that changed the world of audio. The ultimate in bass reproduction achieved by the pioneer of the acoustic suspension method. Utilizing the unique Acoustic Suspension (air spring) principle, it achieves rich and tightly controlled bass reproduction despite having a large woofer. With dome midrange and tweeter units, it boasts extremely natural and faithful reproduction across all frequencies, establishing its status as a reference speaker. Acoustic Suspension: A revolutionary method that uses air pressure within the sealed enclosure to enable ultra-low-frequency reproduction down to 20Hz. 3-Way Configuration: Equipped with a 30cm woofer, 3.8cm dome midrange, and 1.9cm dome tweeter. Dome Units: Was one of the first speakers to extensively use dome-type units, achieving wide dispersion and smooth mid-to-high frequencies. Attenuators: Features rear-mounted attenuators to adjust the level of the midrange and high frequencies. Product Description This item was tested and tested before listing, so you can use it with confidence! I will package it carefully to ensure it arrives safely. As this is a used item, there may be some scuffs, rust, scratches, or dirt. Pyament within 3 days. Packages:Box or envelope and Bubble wrup. We provide valid Tracking Numbers for all orders. You won’t pay anything extra after checkout. We can negotiate prices for buyers from countries with low tariffs and VAT. Any other questions will be answered within 48 hours.

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One front wired tweeter for the AR-3a and AR-LST Speakers. At this time, we have only one available. Original, burned out voice coil was removed. Magnet gap was cleaned. New voice coil with fabric dome was centered and installed. This fabric dome will return to original form if accidentally pushed in. New copper leads installed. Tested extensively with a music source and appropriate crossover. As these older models often have thin and after installation wavy flanges, we are making strong, flat new flanges mounted to the rear. The item “AR-3a Tweeter” is in sale since Friday, April 16, 2021. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Speakers”. The seller is “vintage-ar” and is located in Albany, New York. This item can be shipped worldwide.

• Model: AR-3A, AR-LST
• Country/Region of Manufacture: United States
• MPN: Does Not Apply
• Brand: Acoustic Research

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Pair of AR-3a speakers for restoration. Cabinets have some small scratches and light dings. One water circle top. Speakers were hooked up to a stereo and actually sounded good. But you can see in the pictures the cones need reformed These are estate items and may need other work to operate perfectly. The item “AR-3a Speakers Pair Acoustic Research For Restoration” is in sale since Tuesday, October 20, 2020. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Speakers”. The seller is “chh1963″ and is located in Marissa, Illinois. This item can’t be shipped, the buyer must pick up the item.

• Brand: AR
• Model: 3a

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Serial numbers 3A 11807 and 3A 1827. Each speaker weighs 46 pounds. All profit from the sale of these speakers goes to local Sister Cities Youth Program. They look like they have been taken well care of. He demonstrated to me that they work using a Carver M-400T AMP on classical music. For those of you who know your audio equipment, I believe that is a serious amp. When asked if he wanted to sell the amp with the speakers, he said he was not yet ready to part with it. From the look in his eyes, I understood. I not really sure he “wanted” to get rid of the speakers, but I think his wife told him it was time to downsize. He is not able to move them anymore. The item “AR-3A SPEAKERS Vintage, Excellent Condition” is in sale since Thursday, July 25, 2019. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Speakers”. The seller is “daveed” and is located in Idaho Falls, Idaho. This item can be shipped to United States.

• Brand: Acoustic Research
• Modified Item: No
• Model: AR-3A
• Country/Region of Manufacture: United States
• Modification Description: n/a

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Unseen rare model in the UK , all original made in USA , only on set is for sale the other model is AR-3a Improved you can see the difference between the two models. Original AR stands , dark brown. Ive been looking for this model for ages till got this incredible pair kept by a music lover in pristine. The drivers are early models and one woofer has the original cloth surround, never touched. Beautiful cabinets in fantastic condition, pine light suave rare colour for this model. The price reflects the quality of these speakers considered by audiophiles as one of the Best Speakers of all times. Taken from Google web. Edgar Villchur and Acoustic research. Villchur earned his Masters in Education degree at The City College of New York and was a writer and teacher at NYU in 1954 when he discovered a new design for loudspeakers. Specifications of 1925, dynamic speakers had become large and boxy in order to reproduce low frequencies. A bass speaker capable of a 40 Hz tone was very large, more suitable for motion picture theaters than for home phonograph systems. The hi-fi market was starting to expand in the early 1950s, with new sensitive pickups and amplifiers capable of reproducing the full dynamic range of the new LP record. But speaker designers were still struggling with the problem of extended, low-distortion bass. Villchur decided to try a radical new approach: Instead of making one more attempt to unravel the Gordian knot, I cut it. I used a different kind of elastic restoring force, one derived from an air spring, instead of the mechanical springs of the suspensions. This turned out to be not too difficult – after all, the speaker has a cabinet which encloses a cushion of elastic air. All I needed to do was to decimate the springy stiffness of the speaker suspensions, and reduce the size of the enclosure until the air spring was strong enough to replace the mechanical springs that we threw away. It also turned out that within the compressions and rarefactions that this air spring would undergo, the response was almost perfectly linear. Thus, the acoustic suspension loudspeaker is an obvious and simple system. You are merely substituting an essentially linear air spring for a nonlinear set of mechanical springs. Villchur used two standard 12-inch Western Electric loudspeakers in designing his new enclosure. I cut away part of the spider of one of them, making it more compliant. I also cut away the entire rim suspension and replaced it with a suspension made of mattress cover material (bacause it is very compliant, and adequately impervious to air). My wife, Rosemary, had worked as a draftsperson during WWII. With those skills, she was able to project my sketch of the three dimensional suspension to the correct pattern on the mattress material so that I could cut it out and form it to the shape I needed. I mounted the second Western Electric speaker on a baffle at the head of an enclosed stairway, so I could compare the performance of my acoustic suspension system with an enclosure volume of two cubic feet against and infinite baffle system with well over 100 cubic feet. The acoustic suspension system was substantially superior in fulness of bass, and especially in lack of distortion. Villchur took his new design to two speak manufacturers but they were not interested. One of his former students, Henry Kloss, was interested. “After these two rebuffs, and in particular the nature of the rebuffs, I changed my mind, ” said Villchur. In the spring of 1954, Villchur drove Kloss up to his lab in Woodstock, describing the theory of his new design along the way. After they arrived, Villchur played some recordings, including an E. Power Biggs LP with copious low-frequency content. After hearing it, Kloss exclaimed, That’s it! And offered the use of his Cambridge loft to manufacture acoustic suspension loudspeakers. “And thus, AR was born, ” observed Villchur. Since they didn’t have the capitalization to hire a production engineer to convert the prototype into a production model, Kloss worked out the details. Henry was responsible for at least 75 percent of the production design of the AR-1. The rest was done by me and by Tony Hoffman, a physicist friend of Henry. They assembled several AR-1 loudspeakers in time for the New York Audio Show in September 1954. Although the critics were impressed with the clean 32-Hz organ pedal tones that the AR-1 could reproduce, they did not quite get the point. One critic commented,’ If your space is limited and you’re looking for a small speaker, you should consider the AR-1 very seriously. It’s a fine speaker – for its size. Julian Hirsch, who at the time published the Audio League Report, wrote that’the AR-1 had the lowest electroacoustic efficiency of any loudspeaker on the market – but at 25 Hz and below, it was more efficient that the Klipschorn, which had the highest efficiency of any speaker on the market. Hirsch also said that the AR-1’established a new industry standard for low distortion bass. Eventually, the industry began to realize that the smaller size of the cabinet was only a secondary advantage of the extended bass response. The acoustic suspension speaker of Edgar Villchur has been considered one of the five most important speaker designs since the Rice-Kellog dynamic speaker of 1925. What really caught the public fancy, however, was the fact that the original Acoustic Research AR-1 was a small loudspeaker system having essentially flat low-frequency response to- below the 40-Hz region. Other manufacturers were quick to point out that the AR-1 gobbled up about 10 times the electrical power needed by larger, more efficient systems. With 50- and 60-watt amplifiers becoming available, this turned out not to be a major drawback, and the trend toward smaller, less-efficient home loudspeaker systems was firmly established. The use of this small inexpensive speaker by such notables as Louis Armstrong was featured in AR’s advertising. By 1958, Villchur added a new tweeter to the AR-3. The dome tweeter was Villchur’s answer to the problems of high frequency dispersion. When you are listening to a loudspeaker in a normally reverberant room, and that loudspeaker has excellent on-axis high-frequency response but depressed off-axis response, the loudspeaker will sound dull in any listening position in the room, including one directly on-axis, because the major part of the sound you hear is that reflected from the walls, floor and ceiling. Putting a dispersing lens in front of the driver doesn’t help much because there isn’t enough high-frequency energy to disperse. The secret of high-frequency dispersion can be stated in two words: small size. Shrinking a cone tweeter to a small size doesn’t help because the voice coil becomes too small to handle any appreciable amount of power. I placed my voice coil at the large diameter of the diaphragm. When you do that, the shape of the diaphragm emerges almost naturally as a dome. That has the further advantage of making unnecessary a second suspension, and it also greatly facilitates solution of the other problems (irregular frequency response and response at the extreme high frequencies). Some years later, Roy Allison improved the dome tweeter by making one with a pulsating motion. Villchur himself wrote most of the advertising copy and brochures for the company in the 1950s and 1960s, emphasizing facts and performance. This style of the 1960s ads. Continued in the 1970s ads. Villchur sponsored live vs. Recorded concerts to demonstrate the accuracy and low distortion of his speakers. He placed the musicians (the Fine Arts String Quartet, among others) on the stage, with a pair of AR-3 loudspeakers behind them. At various points, they would stop playing and the taped performance would take over. Most reviewers of the day could not tell the difference between the live and recorded sound. I thought these concerts defined what we meant by high fidelity,’ commented Villchur. He took care to use the best equipment possible at the time, including an Ampex tape deck, two 60-watt Dynakit amplifiers, and number18. Villchur left AR in 1967 to establish the Foundation for Hearing Aid Research where he developed hearing aids with a system combining compression and equalization that were manufactured by the Resound Corporation. He was appointed a Visiting Scientist at the Massachusetts Institute of Technology and would write numerous articles and books on acoustics that would be published by professional journals of the ASA, IEEE and AES and reprinted by university presses. He continues to live and work at his Foundation in Woodstock NY. “Theory, Ingenuity, and Wizadry in Speaker Design, ” Audio, April 1987 p. 51-55, originally published in Journal of the Acoustical Society of America 77, No. 4, April 1985, p. “Acoustic Suspension, ” Journal of the Audio Engineering Society 41, November 1993, p. The item “AR-3a Acoustic Research speakers 100With4 ohms Blonde Birch 1969 unique AR stands” is in sale since Wednesday, April 24, 2019. This item is in the category “Sound & Vision\Home Audio & HiFi Separates\Speakers & Subwoofers”. The seller is “6656max” and is located in BOREHAMWOOD. This item can be shipped worldwide.

• Model: AR-3a
• Colour: Pine
• Country/Region of Manufacture: United States
• Sound Quality: High Fidelity (Hi-Fi)
• Connectivity: Wired
• Features: 4ohms !
• RMS Power: 100w
• Speaker Design: 3-way
• Brand: Acoustic Research

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Best condition I have ever seen. Perfect edges and corners. I replaced the surrounds and they sound fantastic. One tiny spot on the edge of the otherwise perfect grills frayed a bit on removal. But regardless these are the best condition I’ve ever seen Attenuation pots work. There is a few spots where one cuts out. I’ve worked it a bit and I think they are all ok but you may want to clean them. I leave them on zero attenuation and they are fine. Serial numbers are not similar but these are obviously an original pair With Teak finish. The item “AR-3A Pair Vintage Speakers Cabinets Near Mint New surrounds ACOUSTIC RESEARCH” is in sale since Thursday, September 13, 2018. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Speakers”. The seller is “eyesprize2″ and is located in San Francisco, California. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, Sweden, Thailand, Belgium, France, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Israel, Mexico, New Zealand, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Colombia, Panama, Jamaica, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion.

• Model: 3A
• Modified Item: No
• Country/Region of Manufacture: United States
• Custom Bundle: No
• Brand: AR
• Non-Domestic Product: No

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Best condition I have ever seen. Perfect edges and corners. I replaced the surrounds and they sound fantastic. One tiny spot on the edge of the otherwise perfect grills frayed a bit on removal. But regardless these are the best condition I’ve ever seen Attenuation pots work. There is a few spots where one cuts out. I’ve worked it a bit and I think they are all ok but you may want to clean them. I leave them on zero attenuation and they are fine. Serial numbers are not similar but these are obviously an original pair With Teak finish. The item “AR-3A Pair Vintage Speakers Cabinets Near Mint New surrounds ACOUSTIC RESEARCH” is in sale since Tuesday, August 14, 2018. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Speakers”. The seller is “eyesprize2″ and is located in San Francisco, California. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, Sweden, Thailand, Belgium, France, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Israel, Mexico, New Zealand, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Colombia, Panama, Jamaica, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion.

• Model: 3A
• Modified Item: No
• Country/Region of Manufacture: United States
• Custom Bundle: No
• Brand: AR
• Non-Domestic Product: No

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Best condition I have ever seen. Perfect edges and corners. I replaced the surrounds and they sound fantastic. One tiny spot on the edge of the otherwise perfect grills frayed a bit on removal. But regardless these are the best condition I’ve ever seen Attenuation pots work. There is a few spots where one cuts out. I’ve worked it a bit and I think they are all ok but you may want to clean them. I leave them on zero attenuation and they are fine. Serial numbers are not similar but these are obviously an original pair With Teak finish. The item “AR-3A Pair Vintage Speakers Cabinets Near Mint New surrounds ACOUSTIC RESEARCH” is in sale since Wednesday, August 1, 2018. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Speakers”. The seller is “eyesprize2″ and is located in San Francisco, California. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, Sweden, Thailand, Belgium, France, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Israel, Mexico, New Zealand, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Colombia, Panama, Jamaica, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion.

• Model: 3A
• Modified Item: No
• Country/Region of Manufacture: United States
• Custom Bundle: No
• Brand: AR
• Non-Domestic Product: No

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See images for condition… Not sure why the magnet is off of one of the subs but my friend said he opened them up it was flaoting in there. Exactly as seen in images.. Both speakers will come in one box. The item “AR-3A SPEAKERS acoustic research speakers for parts or repair” is in sale since Monday, March 27, 2017. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Speakers”. The seller is “7oldskolgames89″ and is located in Colorado Springs, Colorado. This item can be shipped to United States.

• Brand: Acoustic Research
• Model: AR-3A

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I got these rare vintage high quality speakers from an estate sale from the original owner. They do work but they need to be restored.. The midrange and tweeters cut out periodically, prob just need cleaned inside. One woofer vibrates some at higher volumes but does work. The cabinets have dings and scratches but could be re finished easily. The grills are a bit dirty and have a small hole as shown in the pics. One badge is rusty. Grill frames are not broken or cracked so could easily have grill fabric changed. CHECK OUT MY OTHER ITEMS! The item “AR-3a Vintage Speakers Parts or Restore. Vintage Acoustic Research” is in sale since Thursday, January 12, 2017. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Speakers”. The seller is “mysecondchanceauctions” and is located in Hebron, Ohio. This item can be shipped to United States.

• Brand: AR
• Model: 3a

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