8 ohms. Excellent high-powered driver (600 watts) designed for Pro Sound reinforcement, also works great with bass guitar. Features include paper cone and apton coil former, Polyamide coated copper voice coil, Ferrite magnet, vented pole piece and Pressed steel basket, cloth accordion surround. Direct replacement for Mackie SWA1501; also replaces EAW FR153Z. If you’re looking for a reasonable cost to replace a tired pa/bass speaker here you go. Sells new everywhere for $129 to $159. This one’s new in the box, never installed, and just $85.