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On-Stage

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The On-Stage SSA21 Subwoofer Adapter's female M20 threading attaches to M20 speaker shafts to accommodate virtually any subwoofer on the market, utilizing both removable M20 threading and a tapered, steel-lugged lower section to accept 13/8" cups. Whether it is a shallow M20, recessed M20, 1 3/8" cup or 1 3/8" cup with M20, the SSA21 will fit your subwoofer.
On-Stage Subwoofer Adapter

collapse expand iconSpecs

  • Application: Subwoofer adapter with removable M20
  • Weight Capacity: 100 lbs.
  • Upper Adapter: Accepts male M20
  • Lower Adapter: Tapered to 1 3/8" with removable M20 to fit all subwoofers on the market
  • Includes: Allen key for M20 lug removal Construction: Steel

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