The JRX725 loudspeaker from JBL delivers high-power audio in a lightweight design ideal for live applications. There are two 15′′ 2265H differential drive woofers that provide extended low-frequency range as low as 37Hz. The 2451H 4′′ voice coil neodymium compression tweeter delivers crisp, clear treble with frequencies as high as 20kHz. The speaker has a strong 11-ply birch enclosure with a black duraflex finish and a 16-gauge steel grille for lasting durability and superior acoustic performance. There are two 15′′ 2265h differential drive woofers that provide an extended low-frequency range as low as 37hz.”