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Found 8 results

  1. Just restored. 1968 and 1969 date stamps inside. These were used as studio monitors in a radio station until the late 1990s then stored until now . They have slightly different woofers but I believe both are OEM, just different revs. Tweeter pot replaced with fixed resistors to simulate normal to slight increase setting. New poly/metal caps, woofer surrounds re-doped, polyester fill. Cabinets have 4 fresh coats of oil, moderate scratches and discoloration. Original labels and inspection tags on backs. Can send more pics , having trouble uploading. Reduced to $175. Reasonable offers will be con
  2. Hi all. I am a couple months into an obsession with restoring a pair of AR 4x I found. I nabbed them after their weight and then a google search clued me on that I had stumbled upon a hidden gem. In my ignorance I tried to patch a damaged woofer with Elmer's glue and coffee filter. Of course the cone split wide open when I tried to use it. This speaker has the ribbed cone and big fat alnico magnet. I would love to salvage it and have found a guy a couple hours away who will repair the cone (but won't re-cone). I just need to find a way to remove the glue and patch. Aside from soap and water,
  3. I've just uploaded some AR speaker reviews from High Fidelity magazine to my server. You can access them here: https://archive.mgm51.com/library/AcousticResearch/
  4. Finished treating the cloth surrounds of my AR3a woofers this morning. This was the last thing I wanted to do to complete their restoration. Since it takes several days for the treatment to dry I hooked up my completely restored AR4x in my main listening area. (I had also treated the cloth surrounds of the 4x's as well - a process that made a big different on bass) Wow - I'd really forgotten just how good these little 2 ways sound. They had to be absolutely one of the best buys in speakers back in their day. Still are likely. My pair was bought used but immaculate back in 1971. I think I g
  5. I've posted this elsewhere but I'd like as many opinions as possible. I began the process of refurbishing a pair of AR4x speakers that I bought used over 40 years ago. I pulled the grills off to find that one speaker has a particle board baffle and the other is wood. I pulled both woofers and found that the particle board baffle was damaged at one time and badly repaired. It looks like someone used wood putty to fill in damaged spots around two of the t-nuts. As I removed the woofer, one of the repaired portions crumbled. The other repaired portion around the second t-nut is marginal at best
  6. This thread has been created to share my experience with the evaluation of two currently available phenolic ring tweeter (PRT) types as potential replacements to the original AR4x tweeter. Many 4x owners have experienced the demise of their original tweeters and seek alternatives to originals that are no longer available, except as used goods thru on line re-sellers.I will cover the investigation over a number of posts to follow because the volume of test data I present will simply be too much to include in one, initial post.Many readers of this thread may not know that two versions of PRT ar
  7. I have started a new thread in the "Mods, Tweaks and Upgrades" forum. The main subject is phenolic ring tweeters. Two 8 ohm versions are currently available. Test results are provided along with suggested crossovers that provide smooth integration of these PRT with original AR4x woofer. http://www.classicspeakerpages.net/IP.Board/index.php?showtopic=7561
  8. Some background: I bought pairs of AR3a, AR2ax, AR4a, and AR 58BX when they were on store shelves and moved them from house to house, over the years. I still have them all. About 5 years ago, I pulled the AR2ax and AR4a's out of their place in the attic to use as surround speakers. Of course, I found foam rot. Not knowing of their "classic" status, I replaced the bass drivers with equivalent size drivers from Ed (and threw away the old drivers). Both pair were bought in unfinished pine, and have been repainted at least twice and the grill cloth was replaced with black grill cloth. Have
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