Alpine S2-W8D4

Features

Progressive Spider: The progressive spider has reinforced layer tinsel leads to ensure reliable and consistent control of the tinsel leads and eliminate any mechanical noise or interference often seen in high excursion cone designs.

Compound Radius Curve Pole Geometry: Alpine's Patented Compound Radius Curve extended pole geometry ensures a symmetrical magnetic field, while optimizing flux density to reduce distortion and further improve power handling and output.

Dual Voice Coils: For system flexibility, the woofer has two 4Ω voice coils. When the voice coils are wired in parallel, the woofer presents a 2Ω load. When the voice coils are wired in series, the woofer presents an 8Ω load.

Spring Terminals: The spring post terminals are all located on one side of the woofer. The terminals will accept pin connectors, single banana plugs, or bare wire up to 8-gauge.

Jumpers: Included with the woofer are two voice coil terminal jumpers. These jumpers allow you to easily wire the voice coils in parallel (for a 2Ω load) or series (for an 8Ω load).

Enclosure:

• Sealed Box: Alpine recommends a sealed enclosure with an internal volume between 0.18 and 0.53 cubic feet, with an ideal volume of 0.3 cubic feet. Sealed enclosures provide the most control over a woofer, will handle a lot of power, and provide accurate sonic reproduction, making them suitable to all types of music.
• Ported Box Volume: The recommended ported box volume ranges from 0.38 cubic feet to 0.73 cubic feet, with the ideal size being 0.61 cubic feet, using a slot port measuring 7" (W) x ¾" (H) x 15½" (L).