Dhd Subwoofers Dual Dhd Ntx-6812 Vs Sony Dual 12" Car Subwoofers In Ported Box (XSLE121D)?

Dual Dhd ntx-6812 vs Sony Dual 12" Car Subwoofers in Ported Box (XSLE121D)? - dhd subwoofers

I recently completed a baught Kenwood KAC-7204 AMP and planning to use it in bridge mode (500 RMS @ 4 ohms) to! I want to buy the Sony Xplod Dual in a lid (600 RMS @ 4 ohms) (http://www.bestbuy.ca/catalog/proddetail.asp?sku_id=0926INGFS10121752&catid=20119&logon=&langid=EN), but is known to someone , by selling their DHD NTX-6812 wanted. There are 2 of them enclosed in a box! I do not have much information about the existence of RMS and everything! I'm wondering witch one to buy now ... (Http: / / www.dhdusa.com / product_pages / subwoof.html ()) below! And if I DHDS ... How can I get a connection to a 4ohm load for my amp because it ...?:) DVC subs thank you!