Newegg.com has the Klipsch Reference RW-12d 12" Powered Subwoofer for a good price.

Item has a rating of 5/5 from 24 reviews

Regular Price : $499.99 Shipped

1. Newegg Price : $499.99 Shipped
2. Use coupon code EMCKAJG24 to get $150 off ( Exp : 9/14/11 )
Final Price : $349.99 Shipped