Im buying a box for 2 10"s to go up under my back seat. 2 kickers 10"s 300W 4-Ohm Subwoofer. I need to know what size amp i need. please help

 

500 to 800 watt mono amp

 

You want a single channel amp that will produce 600W into a 2 ohm load. Wire the subs in parallel (separate wires from the output to each sub). Alternately, you could to a two channel amp that puts 300W into each channel at 4ohms, and wire one sub to each channel. I think the first option will be cheaper. FWIW, that's my plan, though I've got two 10" kenwoods. That and a cheap (and probably lousy, with what I spent) Visonik 317 I got online for something like $60 (400W into 4ohms, 600W into 2ohms).

 

If you wanted to keep the Kicker theme, you can find NEW amps on ebay for reasonable prices. Like this one http://cgi.ebay.com/Kicker-KX600-1-C...item45eff247bb