This woofer has a five-sided polypropylene cone. This design stiffens the
cone, resulting in lower distortion and higher power handling. The five-sided
cone also cuts down on standing waves on its surface because none of the five
sides is parallel to another.
P5 Center Cap: The five-sided
dust cap also adds strength to the cone assembly.
Foamed Rubber Surround: The
foamed rubber surround provides enhanced cone control and flexibility, as well
as durability. "Hash Marks" in the surround provide added stability.
Voice Coil: The
four-layer, edge-wound voice coil provides plenty of copper to pass the current
necessary for high power reliability. The voice coil former is aluminum for
superior heat dissipation.
Inner Cap: The inner cap at the
top of the voice coil former stabilizes the coil's shape and strengthens the
connection between the cone and voice coil.
Dual three-layer woven spiders provide enhanced cone control. The lead wires are
woven into the top spider to prevent shorting to the frame.
Binding Posts: The gold-plated
binding posts will accept bare wire up to 8 Gauge, pin connectors, spade lugs
and banana plugs. The binding posts are spaced too far apart to accept dual
Enclosure Compatibility: This
woofer can provide extended bass in sealed and ported enclosures (please see the
"Enclosure" section for more information on the recommended enclosures).
Sealed Box Volume:
Sony recommends mounting this woofer in a sealed enclosure with an internal
volume of 1.15 cu/ft.
Ported Box Volume:
Sony recommends mounting this woofer in a ported enclosure with an internal
volume of 0.82 cu/ft with one 3" Diameter x 12" Long port.
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