Martin
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Posts posted by Martin
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The Philips mids' surrounds were always porous & don't need sealant.
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Where are you located? I think I have one complete spare.
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Those 4 little cone tweeters in the Rectilinear III really do sound good together. My various past experiments with other cone & dome tweeters never quite equaled the originals. Beware those holes are small & will need to be enlarged to fit most other tweeters.
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I didn't get very far either when searching for USS. I do recall that this same tweeter was used by other manufacturers, including, I think, McIntosh. Anyone who felt shortchanged by owning this American-made A-25 need not feel bad as it sounds great, even without the Seas drivers.
I've never confirmed this, but I think these same drivers were used in at least some A-25VWs which were the cheaper, vinyl-clad version, that were introduced after the original A-25 became very popular. They were not as elegant with vinyl cabinets & dark grill cloth, but they sounded great & were priced to compete with AR 4x, AR 7 & KLH 17, all formidable competitors, but IMO, no match for the A-25. Most A-25VWs I've seen used a very different-looking tweeter that had an orange-colored dome. I bet these 2 tweeters were otherwise very similar.
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Thanks for a great restoration post on a great speaker that doesn't get enough recognition.
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Nice work!
Has anyone actually measured the impedance of a KLH 20 to see if it is different from that of a 17? Perhaps the woofers are different even though they look the same.
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Very nice job. Your ingenuity & creativity are admirable.
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Thanks for this recommendation, Kent. I think I'll try it, too.
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Anyone know if Walter Berry is still around? I'm sure he'd have some good stories to tell. He was always very kind to, & tolerant of, a certain teenager I know who regularly visited the NY showroom with an armfull of LPs.
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This is what an A40XL crossover looks like. I've owned these for 40 years & have never opened them up. Figured somebody, somewhere may be curious, although these are rarely seen. Sounds like an A25 with extended high end and with greater efficiency & power handling capacity. Just replaced the cap & like what I hear very much.
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I bought Dynaco A25s instead.
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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.
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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.
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On 2/11/2018 at 2:20 PM, Ray O said:
I thought about connecting them in series, but for some reason that just sounds wrong.
It's not wrong, it's right.
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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.
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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.
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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.
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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.
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It's great to see some enthusiasm here for Rectilinear since they are largely forgotten. BTW, the XI & XIa gave the KLH 17 & AR 4x some stiff competition.
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If it's of any help, I spent a lot of time in the AR Listening Room in NYC and would be glad to share those observations.
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Great picture! That KLH woofer really looks like it belongs elsewhere, like in a KLH 20, which was the only 4-ohm 10" KLH product I can recall. Looks just like a KLH 17 woofer, but for the impedance. While it's a nice fit, and to the uninitiated, it looks like it belongs there, I think the original woofer used in the X & Xa must have been a bit more robust than the one used in the KLH 17/20. It was probably comparable in performance to the bigger KLH 6 or 5 woofers as the X/Xa were very competent loudspeakers.
BTW, I've also owned IIIs, Mini-IIIs, XIs & XIas. You could say I'm a Rectilinear fan.
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Just ran across your post & wondered if you'd found a pair. I've been searching in vain for a pair for many years until last week when I finally found a pair of Xa. Unfortunately, this pair was modified and is essentially, worthless, as the original woofers are missing and replacements are nearly non-existent. I remember the ads for them pretty clearly, even though it's been 45 years. As I recall, they were called a very "fast" loudspeaker. The first crossover point, to the terrific Philips midrange, was 100Hz. It was a radical design which I bet blew lots of midrange drivers and is probably why this model disappeared very quickly.
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The A25s were worth the wait, IMO.
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One of the great speakers of all time, IMO.
WTB Dynaco A-50 Woofer
in For sale / Wanted
Posted
Anyone have a spare woofer for a Dynaco A50? One of mine is suddenly misbehaving.