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In Reply to: RE: Dabbling with Bose 901 Series 2 posted by BigguyinATL on February 19, 2015 at 10:02:51
I think in 1972 or so when these speakers were built, we were not as obsessed with high frequency detail...
The bad thing about listening to modern equipment now-a days is that once you consistently listen to solid high frequency content - when the content is gone - the experience is dulled as well.
I wouldn't call myself "obsessed" then or now, but have always enjoyed hearing the natural extension of cymbals, brushes, shakers, bell trees, triangles, etc. In 1972, I owned Large Advents which were definitely shy in the top octave. I supplemented them with Microstatic tweeters, intended to improve range and dispersion for many speakers of that day.
I also learned the role that the electronics played around that time. By '74, I was using an HK Citation 11 with a Crown D150 amp to drive them. A dealer friend loaned me his Audio Research SP3a for a weekend. What a difference that made at the top! I can still remember how much more natural the shakers that open Steely Dan's Do It Again sounded.
Follow Ups:
When these came out, the company had an aim to produce an array as good as the JansZen I30 at a greatly reduced cost. While the quality was nowhere near that of the JansZen it was so much more inexpensive it made sense to add them to speakers like the Advents and ARs. Sadly, they killed the JansZen as a viable product but it was a rapidly shrinking market so it was only a matter of time before the I30 was a dead product. It was sad as this was Art's cash cow, so to speak and not mixed up in all the licensing messes he had.
Don Brian Levy, J.D.
Toronto ON Canada
I wish I could have heard the Janszen tweeters with the Advents. I recall the 130 was originally paired with AR-1s to great success.
It wasn't until '76 that I heard Dayton-Wrights and became an instant fan of electrostats...
Didn't those use the Peerless cone tweeters?
They employed cones of two different diameters, but I don't know the manufacturer. While the dispersion of each tweeter wasn't impressive, the four driver angled array offset that issue.
It still didn't have the clarity of the soft dome tweeter in the Braun LV1020 that replaced it.
Looks very much like the Peerless, which was avail. in at least
two diameters. I think the largest was 3" frame. They all used very thin
aluminum domes which allowed them to have upper extension. I have some
in AA ads with pics, if you want to compare them. Mine are alnico with
black frame also.
They sure do look like yours.
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