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DavidR

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  • Birthday 06/21/1951

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  1. Over the years toluene has had its permissible exposure level continually reduced. Not good for your central nervous system, blood, heart, etc. BUT being an aliphatic it smells nice.
  2. Toluene will work well. Wear nitrile gloves. Toluene will pull fat from your body right thru your skin. Attached is a picture of my AR91 woofer that shows the masonite ring.
  3. Yeah, Boston would have worked. Shipping is crazy expensive at the moment. Let us know if you find out about the glue used. Be careful not to destroy the masonite ring on the outer edge (under) of the surround. A good sharp exacto blade might cut the glue on the surround edge glued to the cone. Just take your time.
  4. See if the person you bought them from remembers what glue he used. Acetone is not a typical diluent for adhesives. I work for a large company that did lots of adhesives. Lacquer thinner, toluene and MEK might be better - BUT it all depends on the glue used. Use a well ventilated area to do any work with those solvents. Where do you live? If you are close I'd be willing to take that on for you.
  5. The metal cased canned cap behind the autotransformer might be a Callins cap. They did not use the same liquid electrolyte as Sprague and probably not the same quality winding material. These should be checked/tested. I have MkII 10Pi and all the caps were Callins and needed replacing. Congrats on acquiring a great pair of speakers.
  6. I was comparing the B&W 802 to my 9s and 90s. I wouldn't bother to listen to a small two-way speaker.
  7. That is not what I was referring to. Perhaps I misunderstood your comment.
  8. I have listened to several B&W speakers and Martin Logan. I have the exact opposite opinion of the B&W. I find the tweeters exceptionally clear and precise, the mids are nice but nothing stands out as special and the bass is weak. I have listened to them being driven by a high-end solid state amp (Bryston) and big McIntosh mono tube amps. I was always un-impressed with the B&W bass. The ML were driven by McIntosh 275 tube amp. If you moved an inch off center you'd lose stereo and everything falls apart. On center they are clear but no big wow factor for me. I always felt the AR upper end needs improvement compared to today's speakers. I find that the male voice (not singing but talking) is poorly reproduced. As for the bass when comparing them to my Bose 901_II > The Bose shake the walls but the AR bass runs down thru the frame of the house. The Bose bass is more baritone and AR is true bass. My AR speakers for comparison are 9 and 90. Even the bass from my 10 Pi and 91's and son's TSW610 are very deep and well defined.
  9. Craig's List in Natick, MA (about 12 west of Boston) Original 1955 Acoustic Research model 1U in unmolested condition. All original. The U stands for unfinished. Tested and sounds great! The box is not in great condition but if you are familiar with this speaker that is irrelevant as the value is in the drivers. The 755a routinely sells for $2000 and the woofer for $400. It is hooked up and can be tested before purchase. Removing the drivers can be tricky and I don’t have the time and I don’t want to risk damaging them doing it myself. If you have the time and experience to part this out there is $900 worth of profit for you…. This is an early model with the 7 binding posts, address of 25 Thorndike not 24 and low serial number 1814. Price is extremely firm! $1500
  10. Try this guy > http://www.millersound.net/about.htm
  11. I wonder which AR brand owner made these.
  12. As a tube amp owner I would think a bass reflex design (ported) with a tube amp which typically have very low damping factor would sound very wooly and flabby with little 'tight' bass sound. For a while I ran AR91 with a solid state amp that had very high damping factor and 10Pi with my tube amp. VERY different bass sound. Those speakers are not listed on the Aphenos list. To each his own.
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