Strong magnetic circuit: Our engineers designed a strong magnetic circuit with the purpose of reproducing deep low frequencies. Their efforts employed a large magnet and optimized yoke.
Oversized Diaphragm: Low frequency output is increased because of a larger cone size. The cutout diameter has remained the same making this feature of the new XR woofers ideal for most vehicles where space is a premium. The XR woofers are ideal for a small sealed box. * RECOMMENDED SEALED BOX VOLUME: 0.88 cft
Excelon Performance & Quality:

eXcelon products incorporate the latest technologies and deliver the highest sonic performance. From advanced audio tuning capabilities, crossover and equalizer systems, high voltage preouts and two-year warranty, eXcelon represents the very best product available.
Stress-free Spider:

By adopting a "Stress-free Spider" and a "Thermal Efficient System" the mechanical and thermal durability has been improved dramatically delivering smooth and strong bass sound with long lasting reliability.
Reinforcing Ribs (Cone):

The newly designed cone features ribbing that adds strength to the cone and minimizes distortion

KENWOOD

KENWOOD P-XW804B 8” Oversized Shallow Subwoofer