sub for bose system
 

What size amp and size sub woofer speakers should I get that would compliment
the bose system and what manufacture? I would like to bring out the bass alittle more since when the volumn is turned up the bass gets softer. I do not need something that would make the rear view mirror move as it thumps. Is there a lot of rattling when subs are used in the RX? Thanks for the feedback...