So you have one of your solenoids do double duty?
Nope, I only have solenoids for the flippers (and they are actually not even software-controlled; literally, you push the flipper button, it fires, period, unless you turn them off altogether with a hard switch I wired in a while ago). The rest of it is handled by four exciter and two bass shaker speakers mounted to the sidewalls and floor of the cabinet. They use the cabinet itself as resonating surfaces so what you hear, you also feel under your fingers. As such, the knocker sound is not NEARLY as loud, startling, or power-drawing as an actual knocker, and I am 100% fine with that on all three fronts. (This also means I can control the volume of it through software and play late at night and not wake people up. My rumble motor is also tuned down to tolerable-yet-effective levels.)
