boyscout,
Tubes are ok naman, pero if gagamitin mu for a RAV4 you need atleast a 10 incher, im using tubes din sa pickup ko, gamit ko 2 6"na bazooka subs. mdyo bitin sya sumtimes dahil sa music na piniplay ko. i suggest you try a small sealed box with a low mounting depth na sub, para onting space magagamit. are you using a 3 door or 5 door rav4?

If ur interested pala, i myt sell my tube subs. and im selling din a 10" sub in a smal ported box, 0.7cu.ft ang internal volume. txt me nalanag if interested. 09178930865.