On Stage SSA21 M20 Universal Subwoofer Adapter 100795123 Capable of handling very high

Capable of handling very high sound pressure levels

A thirty year standard in universal fit electric cases

USB Audio:

truss- and rack-mountable

On Stage SSA21 M20 Universal Subwoofer Adapter 100795123 Capable of handling very highOn Stage SSA21 M20 Universal Subwoofer Adapter 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, zinc lugged lower section to accept 1 " 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. Features: Provides speaker shafts with M20