Please measure mounting area to confirm fit
Introduce yourself to Alpine's top-of-the-line 15" low frequency behemoth and understand what low frequency power really means. 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.
Note: If you are wiring this DVC sub for lower impedance, make sure that your amp is compatible. Most car amplifiers are stable down to 2 ohms in standard mode, or 4 ohms in bridged operation.
Details:
- 15" subwoofer with dual 2-ohm voice coils
- Kevlar®-infused pulp cone with Santoprene rubber surround
- 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
- Recommended Q-Logic Box Type: 1
- 1-year warranty
Priced per speaker
Top of page
Learning Center
- Subwoofer Shopping Guide
- Subwoofers are speakers dedicated solely to reproducing low frequencies. No matter what kind of music you...
Learn more about Component Subwoofers
No Interest If Paid Within 6 Months*
* Valid on qualifying purchases made between 12/29/09 – 3/31/10 when you use your Sony Financial Services credit card account.
On promo purchase balance, monthly payments required, and no finance charges will be assessed if:
(1) promo purchase balance paid in full in 6 months.
(2) all minimum monthly payments on account paid when due, and
(3) account balance does not exceed credit limit.
Otherwise, promo may be terminated & finance charges assessed from purchase date.
On promotions requiring a minimum payment, payments over the minimum will usually be applied to those promo balances
before non-promo and other balances. If you have a non-promo balance, this may reduce the benefit from the promo. If you want
to change this payment allocation, please call Customer Service. Standard terms apply to non-promo purchases and optional
charges. Promo purchases on existing accounts may not receive full benefit of promo terms, including reduced APR if applicable,
if account is subject to delinquency pricing. As of 12/01/09 APR 23.99% and on all accounts in default 29.99%. Minimum
Finance Charge $2.00. Subject to approval by GE Money Bank.
Offer subject to termination at any time without prior notice.
