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/2026/04/acoustic-research-ar3a-speaker-cabinet-with-crossover-1972-very-nice-ar3-a/ https://acousticresearchspeakers.net/2026/04/acoustic-research-ar3a-speaker-cabinet-with-crossover-1972-very-nice-ar3-a/#comments Sat, 04 Apr 2026 23:22:11 +0000 https://acousticresearchspeakers.net/2026/04/acoustic-research-ar3a-speaker-cabinet-with-crossover-1972-very-nice-ar3-a/ read more »]]>




















Up for sale, a very nice SINGLE vintage AR3a speaker cabinet. The drivers that were removed were dated from 1972. This cabinet is in very nice condition. There are only a few small cosmetic blemishes, which can ve seen in the pictures. The drivers were removed, but the insulation and crossovers are still intact and untouched. The crossover pots are typical, they will need cleaned or replaced. The other components are also listed for sale separately. Please check my other listings for the match to this cabinet if you are in need of two. View my other listings for an array of interesting items at great prices. Please ask for additional pictures or videos if needed. The vintage stereo gear that I sell IS vintage, meaning that it is 30, 40, or even 50+ years old. With that being said, I can not offer any warranties on it. If I have a piece of gear that is questionable in any way, i will either list it as “Parts or Repair” or I will note the issues that I have found. Thank you very much for your business. I make every effort to package your items securely, so they arrive safely and undamaged. We are not responsible for any damage done in transit. I often use recycled or repurposed boxes and packing material. Many of the items we sell are used. While we make every effort to accurately describe items, sometimes it is not possible for us to test every function of a particular item. When stock photos are used, item packaging may differ from what is shown. As with all used items, you should expect your item to have signs of wear i. Scratches, dents, scrapes, wrinkles, stains, etc. Again, we make every effort to document any issues as best as possible. What you see is what you get; nothing more, nothing less. Unopened, new, sealed, with tags, undamaged, etc. No warranties, express or implied, are offered with your item unless otherwise specified. Tracking info is uploaded when available. We also cannot be held responsible for you not reading the item’s description.

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Acoustic Research AR98LS Crossover Network Replacement PAIR. The green & white wires will need to be extended, all others are the original length. Pulled from a working environment. Please take a close look at photos to see condition.

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Get cleaner more dynamic midrange and highs with new level of resolution from your AR3a with this upgrade. Upgrade consists of the following. Install all new parts including Hi-Fi Nedlab film capacitors. Low distortion “perfect lay” inductors Install new OFC pure copper wire. Can be made for either level control use or locked into the (0) flat position with resistors and bypass the Level controls. Fully tested on lab analyzer comes with frequency response test sheets. Matched pairs to +/-0.5db max deviation. 20+ years of experience in hi fidelity crossover design. They started irritating me awhile back. So I got these new crossovers. They sound like a new speaker. Results are in a word SUPERB. What an amazing difference the crossovers make. The mids and highs actually sound transparent. Excellent, item as described great packing, improved sound detail, impressed! Take a look at my other interesting audio related auctions.

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You will get a new crossover built to original schematic with some small improvements the circuit and much better parts quality. Crossovers only, not speakers. Get more powerful better extended low frequency, more dynamic cleaner midrange, and smoother higher resolution mids and highs. The speaker will come to life with new levels of detail and dimension. Capacitors mid / tweeter premium Nedlab 2% film capacitors. Capacitors on woofer Hybrid 3% electrolytic+ 2% PP film type. Mid / tweeter section film type resistors, non inductive type. Mid / tweeter coils/Inductors are perfect lay low distortion Air-core type. Woofer coils -15awg thick awg low distortion laminated steel type. All wires 99.99% pure oxygen free copper. Fully tested and matched to better than +/-1db. 20+ years of experience in hi fidelity crossover design. This service is also available for other AR models, just contact me. Dear NE, thanks for the fantastic job you did on rebuilding my KLH 5 crossovers. They look brand new. I received my crossovers in good condition and installed them today. I’m very satisfied. My fortes sound much better now. I finished the install today. Long wait but OMG what a difference! You have my 5 stars. Installed the crossovers over the weekend. You restored the upper range frequency response. The speakers now sound incredible! These crossovers are a significant improvement! Better stereo imaging, clearer distinctions between instruments and vocals and a more responsive bass. Got them yesterday and we spent today getting them installed.. I cried when we turned back on – the sound is so much better. Thank you You do wonderful work!

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VINTAGE Acoustic Research AR3 Speaker CROSSOVER PANELS.

]]> https://acousticresearchspeakers.net/2026/02/vintage-acoustic-research-ar3-speaker-crossover-panels-2/feed/ 0 https://acousticresearchspeakers.net/2026/02/vintage-rare-acoustic-research-ar-401-28-woofers-mid-tweeter-crossover-healthkit/ https://acousticresearchspeakers.net/2026/02/vintage-rare-acoustic-research-ar-401-28-woofers-mid-tweeter-crossover-healthkit/#comments Mon, 02 Feb 2026 06:40:17 +0000 https://acousticresearchspeakers.net/2026/02/vintage-rare-acoustic-research-ar-401-28-woofers-mid-tweeter-crossover-healthkit/ read more »]]>

























U p for sale is a Vintage Rare Acoustic Research AR 401-28 10″ Woofers / 4 1/2″ Mids / Dome Tweeters / Crossovers Includes Original Screws and Signage all in Working Condition. Lot came from Heathkit AS-2A Acoustic Suspension Loudspeaker System Speakers. Speakers were tested at Soundwerks Vintage Audio in Phoenix AZ. Key Specifications (AS-2A / AR-2). 3-way, Acoustic Suspension Loudspeaker System. Two 5 cone midranges. 1.375 dome tweeter (some variations used different tweeters/supertweeters). L-C network, 1000 Hz crossover point. +/- 5dB, 40 Hz – 15,000 Hz (or up to 20kHz in some versions). 15 ohm 20% 4 watt tweeter level control. My descriptions and numerous clear pictures are absolutely accurate and I do my best to be perfectly clear and concise.

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Up for sale, a very nice SINGLE vintage AR3a speaker cabinet. The drivers that were removed were dated from 1967. This cabinet is in very nice condition. There are only a few small cosmetic blemishes, which can ve seen in the pictures. The drivers were removed, but the insulation and crossovers are still intact and untouched. The crossover pots are typical, but do work. The other components are also listed for sale separately. Please check my other listings for the match to this cabinet if you are in need of two. View my other listings for an array of interesting items at great prices. Please ask for additional pictures or videos if needed. The vintage stereo gear that I sell IS vintage, meaning that it is 30, 40, or even 50+ years old. With that being said, I can not offer any warranties on it. If I have a piece of gear that is questionable in any way, i will either list it as “Parts or Repair” or I will note the issues that I have found. Thank you very much for your business. I make every effort to package your items securely, so they arrive safely and undamaged. We are not responsible for any damage done in transit. I often use recycled or repurposed boxes and packing material. Many of the items we sell are used. While we make every effort to accurately describe items, sometimes it is not possible for us to test every function of a particular item. When stock photos are used, item packaging may differ from what is shown. As with all used items, you should expect your item to have signs of wear i. Scratches, dents, scrapes, wrinkles, stains, etc. Again, we make every effort to document any issues as best as possible. What you see is what you get; nothing more, nothing less. Unopened, new, sealed, with tags, undamaged, etc. No warranties, express or implied, are offered with your item unless otherwise specified. Tracking info is uploaded when available. We also cannot be held responsible for you not reading the item’s description.

]]> https://acousticresearchspeakers.net/2026/01/acoustic-research-ar3a-speaker-cabinet-with-crossover-early-ser-very-nice/feed/ 0 https://acousticresearchspeakers.net/2025/12/acoustic-research-ar-ar3a-crossover-upgrade-restore-single-6/ https://acousticresearchspeakers.net/2025/12/acoustic-research-ar-ar3a-crossover-upgrade-restore-single-6/#comments Fri, 26 Dec 2025 17:03:38 +0000 https://acousticresearchspeakers.net/2025/12/acoustic-research-ar-ar3a-crossover-upgrade-restore-single-6/ read more »]]>


Get cleaner more dynamic midrange and highs with new level of resolution from your AR3a with this upgrade. Upgrade consists of the following. Install all new parts including Hi-Fi Nedlab film capacitors. Low distortion “perfect lay” inductors Install new OFC pure copper wire. Can be made for either level control use or locked into the (0) flat position with resistors and bypass the Level controls. Fully tested on lab analyzer comes with frequency response test sheets. Matched pairs to +/-0.5db max deviation. 20+ years of experience in hi fidelity crossover design. They started irritating me awhile back. So I got these new crossovers. They sound like a new speaker. Results are in a word SUPERB. What an amazing difference the crossovers make. The mids and highs actually sound transparent. Excellent, item as described great packing, improved sound detail, impressed! Take a look at my other interesting audio related auctions.

]]> https://acousticresearchspeakers.net/2025/12/acoustic-research-ar-ar3a-crossover-upgrade-restore-single-6/feed/ 0 https://acousticresearchspeakers.net/2025/12/acoustic-research-ar-3a-crossover-upgrade-service-new-crossovers-each-9/ https://acousticresearchspeakers.net/2025/12/acoustic-research-ar-3a-crossover-upgrade-service-new-crossovers-each-9/#comments Thu, 25 Dec 2025 17:01:38 +0000 https://acousticresearchspeakers.net/2025/12/acoustic-research-ar-3a-crossover-upgrade-service-new-crossovers-each-9/ read more »]]>



You will get a new crossover built to original schematic with some small improvements the circuit and much better parts quality. Crossovers only, not speakers. Get more powerful better extended low frequency, more dynamic cleaner midrange, and smoother higher resolution mids and highs. The speaker will come to life with new levels of detail and dimension. Capacitors mid / tweeter premium Nedlab 2% film capacitors. Capacitors on woofer Hybrid 3% electrolytic+ 2% PP film type. Mid / tweeter section film type resistors, non inductive type. Mid / tweeter coils/Inductors are perfect lay low distortion Air-core type. Woofer coils -15awg thick awg low distortion laminated steel type. All wires 99.99% pure oxygen free copper. Fully tested and matched to better than +/-1db. 20+ years of experience in hi fidelity crossover design. This service is also available for other AR models, just contact me. Dear NE, thanks for the fantastic job you did on rebuilding my KLH 5 crossovers. They look brand new. I received my crossovers in good condition and installed them today. I’m very satisfied. My fortes sound much better now. I finished the install today. Long wait but OMG what a difference! You have my 5 stars. Installed the crossovers over the weekend. You restored the upper range frequency response. The speakers now sound incredible! These crossovers are a significant improvement! Better stereo imaging, clearer distinctions between instruments and vocals and a more responsive bass. Got them yesterday and we spent today getting them installed.. I cried when we turned back on – the sound is so much better. Thank you You do wonderful work!

]]> https://acousticresearchspeakers.net/2025/12/acoustic-research-ar-3a-crossover-upgrade-service-new-crossovers-each-9/feed/ 0 https://acousticresearchspeakers.net/2025/12/acoustic-research-ar-ar3a-crossover-upgrade-restore-single-5/ https://acousticresearchspeakers.net/2025/12/acoustic-research-ar-ar3a-crossover-upgrade-restore-single-5/#comments Fri, 05 Dec 2025 16:19:40 +0000 https://acousticresearchspeakers.net/2025/12/acoustic-research-ar-ar3a-crossover-upgrade-restore-single-5/ read more »]]>


Get cleaner more dynamic midrange and highs with new level of resolution from your AR3a with this upgrade. Upgrade consists of the following. Install all new parts including Hi-Fi Nedlab film capacitors. Low distortion “perfect lay” inductors Install new OFC pure copper wire. Can be made for either level control use or locked into the (0) flat position with resistors and bypass the Level controls. Fully tested on lab analyzer comes with frequency response test sheets. Matched pairs to +/-0.5db max deviation. 20+ years of experience in hi fidelity crossover design. They started irritating me awhile back. So I got these new crossovers. They sound like a new speaker. Results are in a word SUPERB. What an amazing difference the crossovers make. The mids and highs actually sound transparent. Excellent, item as described great packing, improved sound detail, impressed! Take a look at my other interesting audio related auctions.

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