can a 12" sub be used for mid-bass ?

the kicker i have is in a ported box ( i was using this as my bass sub before the sq sub ) the model # dcvr12.

i was running it with a r.f amp at 500rms ( sub is rated at 400rms ) and i had pulled that amp and sub.

but was thinking what if......... about the kicker being used for a mid-bass speaker. that r.f amp is a 2ch and has a lp/hp/all cross-over and i can adjust the freq.

ya i could ditch it but why..... its new,, it works, it does ok as a sub. im thinking i have it, why not use it..

now i ditched it for a better sub and glad i did but im only looking for better mid-bass then what my r.f 6x9 are doing.

if it will not work then fine, ill see what i can use.

thanks guys, really.