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About Martin

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    Southern CA
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    Early music, J.S. Bach, vintage hi-fi.

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  1. Dynaco A-50 cabinet salvage

    Thanks, Vern. I've been thinking of mounting my A50s on the wall. I still have the little felt pads that were originally supplied by Dynaco for this purpose, but suspect they won't provide enough isolation.
  2. I spent a lot of my final year of high school in the NYC AR music room. The guy who ran it on weekdays was always very accommodating and was always happy (or at least, willing) to play the LPs I brought and to answer questions. These visits had the desired effect & resulted in the eventual purchase of an AR receiver & XA turntable.
  3. Dynacos stuffing replacement!

    nfafan is exactly right!
  4. Tom, your post brings back a lot of great memories. Here's one that helps make your point: In early 1970, my father asked me to research & recommend speakers to him. Over several weeks, I carefully compared AR2aX, KLH 6, KLH 5, Dyna A25 and a few others at various stores, mostly on 45th St in Manhattan, which was at that time, stereo row. Early in the process, after a few A - B comparisons at one well-known store, the 2aX was my least favorite choice. On the way home, I visited the nearby AR Listening Room where I was so favorably impressed by the 2aX that I thought the Listening Room was somehow rigged. Eventually, after a few more listening trips, I realized that the store was rigged and that the AR listening room simply showed the speakers off accurately and in the best possible light.
  5. Driving these AR3a speakers

    It's not wrong, it's right.
  6. dynaco speakers

    These are not Dynaco speakers.
  7. Driving these AR3a speakers

    Why not connect two AR3as in series (rather than in parallel) on each channel? It seems like this would solve several problems simultaneously, particularly if you usually like to use both pairs together.
  8. KLH 5 fatal design flaw

    As the happy owner of two pairs of Fives, each pair used in different rooms, I can report many hours of listening to them with absolutely no awareness of any flaws, no fatigue and in fact, have no criticisms of any kind. I'd say Henry got it just right, with two sweetly singing midrange drivers, which to me, sound better than the 2aX midrange and just as good as the AR 5 midrange. To each his own.
  9. Another KLH Five recap

    I am in full agreement with Analogman: hot glue has never harmed any of the dozens of film caps used in any of my past restorations. It's a lot cleaner than hot tar, too.
  10. Very interesting topic. I will respectfully disagree with the idea that the subjective bass capability of a 10" 2aX or 5 is closer to that of the 8" 4X than to the 3a and feel that the exact opposite is true. The 3a certainly has extreme low-bass authority possessed by few others, but the 2aX & 5 come pretty close and are able to accurately reproduce most of what's present, on 1970s vinyl, anyway. The 4x does an admirable job for such a small package, but its limits are too easily reached whereas In practical usage, with music rather than with test tones, the limits of the 2aX or 5 are not so easily reached. Room acoustics & speaker placement seem to be at least as important as 12" vs. 10", if not more so.
  11. Anyone have Dynaco A-45?

    These were not sold in the US. The Seas DNA is evident.
  12. dynaco stacking issues

    Can a person have too many pairs of A25s? If you're anywhere near LA, I'd love you buy your extras. I've been stacking A25s since the early '70s with great results in a room that's 16x30. They're horizontal, on stands 24" high.
  13. Rectilinear X or Xa

    I specifically recall the 100 Hz crossover point as being an important feature of the X and the main reason why Rectilinear called it a very fast speaker. If memory serves me properly, they called it the fastest among the competition as well, referring, I believe, to its overall transient response. I can verify that the Philips midrange is a really sweat-sounding driver and is surely a lot "faster" that anyone else's 10-inch woofer, at that time, anyway. Dynaco's A25 was also notable for its excellent transient response with its light & tight Seas 10" woofer.
  14. Rectilinear X or Xa

    Yes, I forgot to mention the Mini III which also has the potato salad container behind the midrange. The Mini III certainly holds its own vs. the other 8" New England competitors. I prefer it to the 4x, 17 & EPI 100, all great little speakers. I suspect Rectilinear used the MDF subenclosure in the X/Xa to help the midrange cope with the 100 Hz xover, a lower point than that used in either the III or Mini III.
  15. Rectilinear X or Xa

    After opening them up, I see the Xa has a fairly large MDF sub-enclosure for the midrange (& tweeter). Contrast this with the big, plastic, deli container that is attached behind the Philips midrange in the III.