Batboard

I inherited the above speaker along with a bunch of other junque (good junk). Anybody know what radio this speaker works with and does anyone have a pinout by wire color. There are 7 crimp-on connectors on the cable, but no plastic shell to hold them so I don't know pin #'s. Any help would be appreciated. Hoping I can use this with my 900Mc Maxtrac.
Thanks,

73 Tom KB5DPE