Alpine W12S4 12" 250 Watt 4 OHM Subwoofer with GTX500 Mono Subwoofer Amplifier 500 watts RMS x 1 at 2 ohms

Alpine W12S4 12-inch Single 4 Ohm Subwoofer
• 12-inch single 4Ω subwoofer
• Polypropylene and mica cone with poly-foam surround
• 250W RMS
• 750W peak power handling
• Frequency Response: 32Hz-200Hz
• 5-5/16-inch mounting depth
• Recommended Sealed box volume: 1.09 cu. Ft.
• Recommended Ported box volume: 1.91 cu. ft
• Bass For All
• The 2017 BASS subwoofers are engineered to be fun and loud in a budget friendly category by combining retro styling with enough efficiency to run on 250W RMS.

GTX-500 Mono Subwoofer Amplifier — 500 watts RMS x 1 at 2 ohms
The GTX500 is the ideal upgrade for those car audio enthusiasts who want exceptional bass without breaking the bank. And don’t let its size fool you. While the GTX500 may be compact, with a max power output of 750 watts you can drive your subs as you see fit. While its true the great sound sets it apart from other subwoofer amps, it’s ease-of-use and installation, configuration and calibration makes it truly stand out—it connects to OEM or aftermarket systems without complicated adapters or setup routines.

Big power: 770 watts peak
• Cars are small, and the space inside them is a challenge to audio engineers. But the GTX500 gives you big, commanding sound. You’ll have 350 watts of RMS at an impedance of 4 ohms, 500 watts at 2 ohms and 770 watts at peak power.
Variable electronic
• GTX500’s variable crossover allows you to optimize tuning based on your speaker location and specific components. And you can do it whether you’re a rocket scientist or not.
Pristine signal for great sound
• With a frequency response of 10Hz to 280Hz, the GTX500 reproduces deep bass tones cleanly. Its full-range preamp outputs allow for multiple hookups without high-loss Y-adapters or signal splitters. Music reaches the amp and passes through it with clarity and fidelity.