looking for chronology, etc. Polk Model 9 vs. 9A
mhardy6647
Posts: 33,960
I have long been fascinated by the original Polk speaker, as evidenced by my very first post here in 2004.
http://www.polkaudio.com/forums/showthread.php?t=19965&highlight=model+9
Thanks to xoaphexox (http://www.polkaudio.com/forums/showthread.php?t=46915&highlight=model+9 ) a pair of Polk Model 9A's has made the trek northward to Massachusetts.
s/n's of these two 9A's are 44509 and 44596. There is a Model 9 pictured elsewhere in these forums with s/n 43215.
http://www.polkaudio.com/forums/attachment.php?attachmentid=9976
There is a fair amount of information on the original Model 9 and the "new and improved" Model 9A to be found here, of course (e.g., http://www.polkaudio.com/forums/showpost.php?p=593897&postcount=4 )
The original used the Motorola "lemon juicer" piezoelectric tweeter; the 9A used the Peerless KO10DT silk dome tweeter. The 9's grille was nonremovable. The 9A had a removable grille held on with "super Velcro" (like the original Model 7 and 10).
So... my question is simply this: does anyone here know the years of production for the original Model 9 and for the Model 9A? As I earlier mentioned, a pair of the original Model 9's was installed in the student pub at Johns Hopkins prior to 1976. FWIW, I never saw a 9A during my mis-spent youth, hanging around at Soundscape in Baltimore (ca. 1976 to 1980). I am really curious about this, as well as any other remaing tidbits on these historically significant :-) tower speakers that haven't already been posted here previously.
http://www.polkaudio.com/forums/attachment.php?attachmentid=7074
http://www.polkaudio.com/forums/attachment.php?attachmentid=17004
Thanks for your attention!
http://www.polkaudio.com/forums/showthread.php?t=19965&highlight=model+9
Thanks to xoaphexox (http://www.polkaudio.com/forums/showthread.php?t=46915&highlight=model+9 ) a pair of Polk Model 9A's has made the trek northward to Massachusetts.
s/n's of these two 9A's are 44509 and 44596. There is a Model 9 pictured elsewhere in these forums with s/n 43215.
http://www.polkaudio.com/forums/attachment.php?attachmentid=9976
There is a fair amount of information on the original Model 9 and the "new and improved" Model 9A to be found here, of course (e.g., http://www.polkaudio.com/forums/showpost.php?p=593897&postcount=4 )
The original used the Motorola "lemon juicer" piezoelectric tweeter; the 9A used the Peerless KO10DT silk dome tweeter. The 9's grille was nonremovable. The 9A had a removable grille held on with "super Velcro" (like the original Model 7 and 10).
So... my question is simply this: does anyone here know the years of production for the original Model 9 and for the Model 9A? As I earlier mentioned, a pair of the original Model 9's was installed in the student pub at Johns Hopkins prior to 1976. FWIW, I never saw a 9A during my mis-spent youth, hanging around at Soundscape in Baltimore (ca. 1976 to 1980). I am really curious about this, as well as any other remaing tidbits on these historically significant :-) tower speakers that haven't already been posted here previously.
http://www.polkaudio.com/forums/attachment.php?attachmentid=7074
http://www.polkaudio.com/forums/attachment.php?attachmentid=17004
Thanks for your attention!
Post edited by mhardy6647 on
Comments
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Fascinating info; thanks! These 9A's definitely have the Peerless dome (sans the Polk-signature hole in the center) and the coated-cone CTS drivers. Philips fullrange drivers would be really cool in there, I'd bet!
These 9A's have an overall "tone" remarkably similar to my 7A's (which was a surprise to me). I tried them out last night with a nice, new-to-me Yamaha CA-800 vintage integrated amp.
Of note on the 9A is an interesting thick foam/foam rubber mat in front of the Peerless tweeter -- looks like something to control reflections or dispersion.