I gotta read up on this thing. I found the volume switch, and put a piece of 1/8 inch foam over the speaker to lessen the roar. I'm not sure what the jackpot is about though, the few balls that drop once in awhile is all I get. The led reels I guess is what I gotta watch. I like it though. Cabinet is going to be a bit harder than I thought, I'll get plans ready when I am done and post them.