Tweeters have been tested and are in good working order. Both produce nice clear sound and measure 6.4 & 7.0 ohms. They were pulled from a pair of SDA-1 speakers. Look at the pictures and feel free to ask any questions.

Good drivers pulled from SDA-1 speakers. They all produce clear sound and measured between 7.7 & 8.1 ohms. Rubber surrounds in good condition. screws included. Price is each. Look at the pictures and feel free to ask any questions.

Tweeters have been tested and are in good working order. Both produce nice clear sound and measure 6.4 & 6.7 ohms. They were pulled from a pair of SDA-1 speakers. Look at the pictures and feel free to ask any questions.

Nice pair of passive radiators pulled from a pair of SDA-1s. Comes with original screws. Ships Fedex or USPS, whichever is cheapest. Shipping limited to lower 48 states, no p.o. boxes. Look at the pictures and feel free to ask any questions.

Woofers were pulled from working SDA-1C speaker and are in very good condition and are working properly. Woofers were just treated with 303 protectant. Mounting screws included. Please see pictures for additional detail on condition and ohm readings for both speakers. Speakers will be well packed for shipping and will ship in individually in USPS medium size boxes Woofers sold individually - 2 available

Polk Audio SDA-1 12 Inch Passive Radiators SW12. Up for sale is a really nice pair of 12 Inch Passive-Radiators used in the SDA-1 along with 4 of the MW6511 Woofers.These have no ISSUES! and again are in really grate shape

Polk Audio MW6509 from SDA 1 speakers. Woofers are working properly and in very good condition. They will include the original mounting screws which have been taped to the magnet of the speakers. Please see pictures for additional detail on condition and ohm readings for both speakers. Speakers are sold separately. Speaker will be well packed for safe shipping. Flat rate shipping to continental US only.

Polk Audio SDA-1 SDA-2 magazine ad. From the October 83 issue of Audio Magazine. It is an original. Not a copy. In good condition. Safely packed, we do include a stiff cardboard insert, the insert and ad wrapped with saran wrap and a Please Do Not Bend sticker on the envelope to help preserve the integrity of the ad.

POLK AUDIO SDA-1 ,6.5 WOOFER #MW6509 6-Available. Woofers are working properly and in excellent physical condition. They include the screws to attach the speakers which are attached using blue tape as seen in the pictures. Please see pictures for additional detail on condition and ohm reading for all 6 speakers. Ohm reading for all 6 are excellent as the when new they were 8.9ohm. Sold individually