They will both sound different, and one thing to note - the JBL has a 4" woofer
and the Polk has a 6 1/2" woofer. The Polk may sound bigger to you, I will not
promote either one.
Who and Where - is the Way, the Truth and the Life?
Speakers > MB Quart VS05, Boston VS260, Snell K7
Subwoofer > Mordaunt Short Aviano 7
Receiver > Tascam PAR-200, Pioneer VSX-30