Quoted from cwg29:I use a 200 Watt 6.5" 8 ohm Pyramid mid range subwoofer from Amazon. They're cheap and it improves the sound immediatly. I really don't think it needs anything else.
http://www.amazon.com/Pyramid-W64-6-5-Inch-MidBass-Woofer/dp/B0002BEPH6/ref=sr_1_2
Are these 4 ohm or 8 ohm? I checked Amazon and under description it says 4 but you say 8. Does it hook straight up as the replacement speaker or do I need to wire in transistors? And if so, why?
Sorry, not super knowledgable in electronics.