JamStands Series Adjustable Subwoofer Pole
The JS-SP50 is exactly what you need for your subwoofer/satellite speaker PA system. Its adjustable in height from 31.5″ to 52.5″ and mounts between a subwoofer cabinet with a top mounting hole and a speaker with a bottom mounting hole (1.375″ for both). The JS-SP50 features both a friction locking knob and a security pin system and is made from durable steel.
Information, specifications, colors, and materials subject to change.
Features

Heavy-duty construction
Height adjustable from 31.5″ to 52.5″
Friction locking knob with security pin
1 3/8″ upper and lower tubes