I have a MA audio 1000XL 10" sub and here are its specs:

500W Rms

1000W Max

Dual 4-Ohm Voice Coils

240oz. Double Stacked Magnets

Mounting Depth: 5.8"

Mounting Diameter: 9.3”

Optimum Vented Box: 1.75 Cu/Ft

Round Port Diameter: (2) 4”

Square Port Area: 25 Sq/In

Port Length: 11”

Optimum Sealed Box: 0.5 – 1 Cu/Ft

I am trying to find an amp that will push it hard but I dont know how to figure what ohm load will be put on the amp. Here are the amps I am looking at:

http://www.maaudio.com/productcatalog.cfm?class=611

I have the 297 and its ok but it doesnt push the sub to anywhere near it potential. Any help would be greatly appreciated.

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