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The JS-SP50 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 system and is made from durable steel.

JS-SP50 Adjustable Subwoofer Pole 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

Specifications:

Product Name: JS-SP50
Part Number: 17509
Height: 31.5" - 52.5" (800mm - 1334mm)
Upper Tube Size: 1.375" (35mm)
Lower Tube Size: 1.375" (35mm)
Weight Rating: 110 lbs. (50 kg)
Weight: 3 lbs. (1.4 kg)