Yes, sir: OB for the win, at least when in this caliber. I have Emerald Physics 3.4s (12" concentric driver with one inch polyester tweeter). Have you checked out my V thread of late? I report on using Nobsound springs under all my kit and the surprising improvements. I plan to put them under my speakers which are currently on Harbor Freight dollys, but it's a 2 person job
hth