I was going to take out the original speakers and put in a pair of computer speakers in the NFL Blitz cabinet I'm converting, but once I saw how light slipped through the grill, I decided, why waste the originals?
I found a cheap pair of Kinyo speakers ($5.99) at Big Lots, and mostly disassembled them tonight, and spliced the speaker wires to the original wires. I put the originals back in the cabinet, turned the speakers on, and listened to a few songs on my ipod. The sound quality was fine, and it looks like this will work.
I did run into two problems. One is that I can't get the power cable out of the back of the right speaker case unless I break or cut it. Not keen on getting shards of plastic to the groin, so anyone know a good way to cut through plastic? I'm considering heating it up with a hair dryer and taking some sort of blade to it.
The other problem is that I can't remove the pcb board from the piece of plastic that has the volume knob attached without removing the volume knob. I could get some pliers and yank or something, but I would prefer to save the knob for reattachment when I want to move the volume control to the control panel.
EDIT - Now have a pic. It's messy, but I'll clean it up when I'm ready to use it.