When original driver boards in vintage or pro-audio amplifiers fail (e.g., due to capacitor aging or thermal stress), technicians replace them with a CLA58 driver top. It serves as a universal or semi-universal substitute for many legacy designs from QSC, Crown, and Peavey.
But it did.
Unique to this model was a vertical chamber extending from the sole toward the top. By flipping the "Gravity Core" weight, you could move the CG up or down to fine-tune spin rates by up to 300-400 RPM. 2. Key Performance Specs cla58 driver top