identification

i need help figuring out what brand this speaker is

Hi folks, New guy here. I recently purchased a new used vehicle and it came with a Pioneer stereo unit that is a mystery to me. I would like to use it but I have no idea how to program it. There is no manual and no obvious model number so I didn’t know what to do until I found this group...

Got these in a trade a few years back, lots of years back. Figured I'd put them in my new car just don't know too much about them. Haven't hooked them up to a meter yet, was just going to see if anyone knew anything about the older FI subs. Thanks again.