DESCRIPTION

Here's what bass power is all about — Alpine's top-of-the-line 15" low frequency behemoth! The SWR-1521D 15" dual 2-ohm voice coil Type-R sub is ready to throw loads of power back at you — up to 1,500 watts peak — while still reproducing your music with remarkable accuracy.The motor structure and double-stacked magnets focus magnetic energy within the vented pole piece so you get incredible output levels. The pulp cone has been reinforced with Kevlar® (the material used in bulletproof vests) for extra rigidity, so it will stand up to hard play. A 1-1/4" Santoprene rubber surround helps to maximize cone travel for deep bass and resists decay that can mar speaker output. An extended spider landing area provides extra excursion for fuller sound.The dual 2-ohm, 2-1/2" voice coils handle all that power and let you wire your system for high output or efficiency. The tinsel leads won't split apart — they're woven into the dual progressive Nomex spiders. The tinsel lead design also helps you get nearly 3" of cone excursion for maximum output. An aluminum diecast frame provides a secure, non-resonant housing.The SWR-1521D is designed for use in sealed or ported enclosures.

• Kevlar®-infused pulp cone
• 1-1/4" Santoprene rubber surround
• dual 2-ohm voic coils (make sure your amplifier is compatible)
• frequency response 22-1,000 Hz
• power range 200-500 watts RMS (250 watts RMS per coil)
• peak power handling 1,500 watts
• sensitivity 89 dB
• top-mount depth 8-3/4"
• sealed box volume: 1.3-2.5 cubic feet
• ported box volume: 1.5-3.0 cubic feet