4" High quality mid-bass. Excellent in 2 way systems as a woofer or in larger systems as a mid or mid-bass. Smooth response extending high enough to use 13mm dome tweeters and powerful enough to use with 25mm dome tweeters.
 

Well planned parameters allow the MAX Pentivent woofers to go in a variety of cabinet sizes well. Also, an excellent up-grade replacement for pre-made aluminum or plastic cabinets.
 

Special features:
1" COPPER VOICE-COIL ON KAPTON BOBBIN: High temperature and low mass.
INJECTION MOLDED PP CONE: Most consistent cone type with excellent internal damping and great looks.
BLACK CHROME BASKET: Resists rust and looks great.
PENTIVENT 5 VENT COOLING: Cools the voice-coil without adding unwanted noises.
RUBBER SURROUND: Excellent internal damping and longevity.
CABINET COMPATIBILITY: Sealed, Ported.