Flipper Fidelity FF4/8 high performance 4" 2-way speaker. This speaker was specifically designed for use within a pinball machine. The features include an integrated 5/8" spacer ring for easy fitment with all Stern, Sega and Data East Pinball Machines. An 8 Ohm impedance for safe installation within your valued game, and just kick-ass performance. With the added clarity and output, these are a great addition when using an external powered woofer, or just replacement for those worn out stock speakers. This is for one speaker, and does not include any wiring or hardware.