Full speaker upgrade kit for Williams WPC 89 pinball machines by Pinball Pro. This sub-woofer extends bass reproduction to 32 Hz. for unbelievable sound. No permanent modification is required to the pinball machine. The special design of the sub-woofer network routes the low frequencies to the sub-woofer, and the full spectrum of sound to the back box speakers. The network includes volume control for the back box speaker level and provides for much greater bass output and quality sound. The included wiring harness greatly simplifies installation and requires no soldering. This kit includes an 8-inch sub-woofer with attached network, a cabinet adapter plate, one 5¼-inch SP-5 speaker, one 5¼-inch-inch SP-5 speaker with an adapter and a wiring harness. Compatible with machines manufactured from 1989 through 09/1993 and having the sound board with one speaker driver output.

Items must be returned within 10 days from date of you receive them and be in the original unopened packaging to qualify for a refund. Returned items are subject to a 10% restocking fee.