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HiFi Collector: Speakers - Polk SDA 1A
https://hificollector.blogspot.com/2009/05/speakers-polk-sda-1a.html
I own a pair of SDA-1Bs. I replaced a tweeter (from Polk) around 2005 or so. (The 1B is electronically identical to the 1A -- the difference being vinyl-covered cabinetry rather than genuine wood. I paid $1250 for them, new, in …
SDA 1A What to do now? — Polk Audio Forum
https://forum.polkaudio.com/discussion/182556/sda-1a-what-to-do-now
SDA1, SDA 1 signature, SDA1a, SDA1b and SDA1c. I have a set of SDA1 Signatures I went and did the XO with all Sonicaps it did make a heck of a difference but it is pricey. Mine had the best bass 4" off the back wall and spiked to the floor. I'll …
Polk SDA 1 — Polk Audio Forum
https://forum.polkaudio.com/discussion/181892/polk-sda-1
The SDA tweeters creates a phasey effect, which is why Polk got rid of them. "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
Sda 1?? — Polk Audio Forum
https://forum.polkaudio.com/discussion/22414/sda-1
The original SDA 1 had "nostril" ports by the tweeters. The SDA 1A eliminated the ports, and had some crossover and cabinet updates. The SDA 1 Signature is an original SDA 1 with the crossover updates, the cabinet mods, and the nostril ports blocked by Polk. A brass "signature" plate went over the baffle to cover the no-longer-used nostril ports.
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