snappy.. they say they cant go over 500hz but in a recent review they took them up too 1k without a problem (mind you that was in .5 cft) you put them in a door they open up a lil more as well. in .5cft the reviewer liked it it even suprised him lol. i listend to mine in about 2 cft and i absolutely loved it up to about 1 k still sounded detailed and is as close to a "sub" i ever had as a midbass as far as lowwer end goes. in small cars you could use them as subs. overall i like them in my set up if they need more output i still have room for 2 more but i really doubt i will need it. also i do believe the rmb line was the mid bass of choice in the team kicker cars at finals they are pretty much the same as the prototypes the were using the yr before.