I have an 11 shaker 1000. The factory subs in the doors sound good. I added a rockford 3sixty.2 eq to the factory head unit. I added the kicker qs60.2 6 inch components all around with a kicker 4 channel amp. The amp makes about 100 watts per channel rms at 4 ohms. It sounds great and very clear. For the shaker 500, add a sub to the trunk to get some deeper bass. Possible a ported enclosure if it will fit.