I did something a little different...I listen to mostly light rock music (Jack Johnson, Dave Matthews, Etc.) so I had my audio shop build a ported box with 3 6.5" JL subs. They are true subs and run a fosgate 300.1 mono amp. It sounds incredible. and mixes nicely with the Disco 4" speakers (also JL). You'll find if you go too deep on the bass you will miss all your mids, which Land Rover struggles with because of the smaller speaker sizes in the doors. The box takes up about 8 inches of cargo space and goes from side to side, carpeted to match, cant find anything better. The 6.5s will produce plenty of bass no matter what music you listen to, even rap sounds nice and full and can shake the car a good bit.