Can someone help identify these "Polks?"

[RickH]

Picked these up at S.A. for ten dollars...they sound pretty good actually.
There are a lot of similar Polks in the Orion book but I can't seem to find these.
6 1/2" woofer marked "SDA CRS" Date on woofer is Aug. 1985. Rectangular dome tweeter marked "SL 2000"
Ported box measuring 8 1/2" deep 9" wide 17" high. 5 way binding posts
with serial # 5JR08858. They are fused externally..Oh, and the port is located
1" directly below the woofer and has an i.d. of aprox. 7/8". Vinyl wrap.
Thanks in advance....if you have these...let me know if you like them.

 

[Rickster71]

Picked these up at S.A. for ten dollars...they sound pretty good actually.
There are a lot of similar Polks in the Orion book but I can't seem to find these.
6 1/2" woofer marked "SDA CRS" Date on woofer is Aug. 1985. Rectangular dome tweeter marked "SL 2000"
Ported box measuring 8 1/2" deep 9" wide 17" high. 5 way binding posts
with serial # 5JR08858. They are fused externally..Oh, and the port is located
1" directly below the woofer and has an i.d. of aprox. 7/8". Vinyl wrap.
Thanks in advance....if you have these...let me know if you like them.

This thread my help you out:
http://www.polkaudio.com/forums/showthread.php?t=25377&highlight=identifying+vintage+tweeters

 

[j_garcia]

SDAs are pretty well sought after, so I think $10 is probably a deal for them. SDAs are probably some of the best speakers Polk did, but you also need the cable for them to get the SDA effect to work.

 

[BoredSysAdmin]

Not exactly these - diff tweeter , but pretty close - maybe your are Monitor 4.5 ??
http://polksda.com/monitor4-6.shtml

 

[j_garcia]

The best way to find out what they are would be to ask on Club Polk, which may have been what Rickster was getting at.