Polk SDA SRS/2 SPeaker Review, 1986, 2 pgs, RARE!

Polk SDA-2 Speaker Review, 1984, 2 pgs, Rare Info!

Polk SDA-2a Speaker Review ,2 pgs, 1985, full test, SRS

Polk SDA CRS Speaker Review,1984,3 pgs,Full Test, RARE!

Polk SDA Automotive Crossover Matrix

Polk SDA-SRS Review, Ultimate Speaker! 1985, 5 pgs, Articles, Specs, Info

1 x FG100SA1 ITRON JAPAN Bar-Graph Vacuum Fluorescent VFD Display 100 SDA NOS

5 x KR1107PV3A КР1107ПВ3А Military 6-bit 100Mhz ECL Bipolar A/D IC SDA5010 5010