heh.
wiring one woofer up with a single voice coil is the same for 2, 4, 8, 16, 32 ohm. they all get wired with 2 pieces of wire.
you can tell dual voice coil easily because it will have two sets of connections "four wires"
to tell if its 4 ohm or 8 ohm throw an ohm meter across the terminals and measure the DC resistance. it won't be the same as the AC impedance but it will give you a ballpark figure.
And you don't "put ohms" into a speaker.