Quoted from Haymaker:FF and PP speakers are a rip off. Just do what you've been doing.
Iām gonna disagree, I put the Flipper Fidelity Meaty Beaty Big and Bassy 10" 3-way Speaker System for Sam and Whitestar Machines in my Iron Man and Spiderman. I got them both on sale at about $84 plus shipping. I immediately noticed an improvement in sound. Clarity and Bass are so much better now.
https://pinside.com/pinball/forum/topic/black-friday-deals-at-flipper-fidelity