Dual Voice Coils

I have an eclipse aluminam subwoofer and they have a dual voice coil on them and i was wondering how i would wire it up so i still get the same amount of power or more and what the benifit of puting the second voice coil on is i have a rocksford fosgate punch 800 II amp and is there a way to get some more power out of the amp by reducing the ohms and for the voice coils if u could give me a paint diagram of how to set it up i would greatly appresaite it thank you for you time

If your sub has two 4 ohm VCs the diagram above would yeild a 2 ohm load to your amp. If your sub has two 8 ohm VCs the diagram above would yeild a 4 ohm load to your amp.

Eclipse 8812.6

Actual Specs

Model : 8812.6Size : 12"DC-R : 5.9W FS : 22HzQTS : 0.35VAS : 4.2CuFtSPL : 87.1dBQES : 0.40QMS : 2.91SD/M 0.0511Santoprene Surround Aluminum Cone Dual Mirror-Image Spiders Aluminum Voice Coil Former "Bottomless" Design Aero-Vented Pole Piece Cast Aluminum Frame Double-Stacked Magnet Small Sealed-Box Enclosure Continuous Power Handling: 500W Music Power Handling: 1,000W is all i could find on the sub

here is the amp

Rockford Fosgate Power Series

125W x 2 @ 4 ohms250W x 2 @ 2 ohms400W x 2 @ 1 ohm800 watts RMS x 1 at 2 ohms

• wired remote control for Punch Bass • Cooling Fan • H 2.6" X W 12.8" X L 23" 

You'll have to find the nominal impedance of those voice coils.  That sub is hard to find info for, it seems.  Measure resistance in ohms across one of the coil's terminals, if you can.  And post what this sub is.  We don't know if it's dual 2, 4 or 8 ohms...so we can't very well figure how to wire it.  Know anybody who has a DMM and knows how to use it?Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.