On-Stage SSA1.5 Speaker Cabinet Insert

The SSA1.5 is an adapter insert designed to adapt 1-3/8" (35 mm) speaker stand shafts or pole mounts to fit PA speaker cabinets equipped with larger 1-1/2" (38 mm) mounting sockets, preventing tilt and wobble.

It simply slips directly over the top end of any standard 1-3/8" diameter speaker stand shaft or subwoofer pole, instantly increasing the outer diameter to 1-1/2" without requiring tools or set screws.

It is constructed from high-impact, durable molded plastic or heavy-duty poly-nylon material that resists cracking, compressing, or degradation under heavy speaker cabinet loads.

No, the smooth plastic sleeve creates a protective barrier between the metal speaker stand pole and the internal metal or plastic socket of the speaker cabinet, preventing scratches and metal-on-metal wear.

Yes, because it sits directly over the load-bearing metal shaft of your existing stand, it easily supports heavy full-range PA cabinets while maintaining stable weight distribution.

It is designed as a removable sleeve that can remain on your speaker stand shaft for convenience during gigs or easily removed when switching back to cabinets with standard 1-3/8" sockets.

By bridging the 1/8" gap between a 1-3/8" pole and a 1-1/2" socket, it eliminates loose leaning, side-to-side play, and stage-vibration rattles, ensuring your speakers stand straight and secure.

It is ideal for older or specialty PA speakers, European-style enclosures, or vintage cabinets (such as select JBL, Electro-Voice, or Mackie models) built with 1-1/2" (38 mm) pole sockets.