Woofer: The Pioneer Champion series TS-W310D4 features a
seamless IMPP (Injection Molded Polypropylene) composite cone. This process of
cone molding assures a uniform cone thickness for superior linearity and clarity.
The cone is lightweight and rigid for low distortion and superior bass response.
Surround: The surround is made of dual-layer, fiber reinforced
Dual 4-ohm Voice Coils: This woofer features two 4-ohm voice
coils that offer wiring flexibility. When the voice coils are wired in parallel,
the woofer presents a 2-ohm load. When the voice coils are wired in series, the
woofer presents an 8-ohm load.
Terminals: Both sets of the woofer's spring compression binding
post terminals are side-by-side for easy wiring. Each post will accept a pin connector,
a single banana plug, or bare wire up to 8 gauge.
Double-stacked Magnet: The woofer uses double-stacked high
energy magnets to create a powerful magnetic force. This increases the control
exerted over the voice coil and the power transferred to the cone.
Sealed Box Volume: The recommended sealed box volume is 1.25
ft³ (from 0.85 ft³ to 1.75 ft³ is acceptable).
Vented Box Volume: The recommended vented box volume is 1.5
ft³ with a 3" diameter x 6" long port (1.25 ft³ to 2.0 ft³ is acceptable).
Single Reflex Bandpass Volume: The bandpass box sizes recommended
by Pioneer range from 0.7 ft³ per chamber to 1.1 ft³ per chamber; with an ideal size
of 0.9 ft³ per chamber. One 3" diameter x 5" long port should be used in an
enclosure with 0.9 ft³ chambers.
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