The Rockville RVSS4A is an air charged Pro Audio Speaker stand with automatic lifting and and lowering system. The center pole features an air cartridge which helps to accommodate both the lifting and lowering of any speaker with a weight capacity of 154 pounds! The system height can be adjusted from 42 to 79 .

How to raise the speaker

1. Put the speaker on the pole
2. Loosen the locking knob
3. Press down the hand clutch and the speaker pole will raise up easily
4. Tighten the locking knob.