The Ultimate Support JS-SP50 Adjustable Subwoofer Pole is exactly what you need for your subwoofer/satellite speaker PA system. It's 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.
|Upper Tube Size||1.375" / 3.49mm|
|Lower Tube Size||1.375" / 3.49mm|
|Height||31.5-52.5" / 80.01-133.35mm|
|Weight||3lbs / 1.36kg|