"all-in-one" High Power Passive Cardiod Subwoofer
A28 is a combination of 18" horn-loaded cabinet side and 18" reflex-loaded driver rear cabinet working together creating a passive cardioid subwoofer system featuring Passive End Fire Technology.
Main features:
Low frequency directivity control with ONLY ONE amplifier channel required
Patented Passive End Fire Technology hybrid enclosure design
Extremely accurate and dynamic low frequency reproduction due to symmetric twin horn channel design
Double long excursion 18” neodymium cone drivers
Rugged birch plywood construction
Textured semi-matt black paint finish