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Subwoofers are becoming an increasingly popular addition to mid-sized and smaller PA systems. The SS7740 and SS7740S are heavy-duty 1 3/8″ aluminum shafts that connect bass enclosures on the stage floor to high frequency cabinets. The SS7740S includes two SSA1.5 – 1 1/2 adapters.Upper Shaft Tubing: 1 3/8″
Shaft Length: 42″
Weight Capacity: 160 lbs.