Alpine R2-SB10V Marine Enclosed Systems Subwoofer Frequency range: 29 Hz to

Frequency range: 29 Hz to 28 kHz

injection molded diaphragm with rubber surround

or as a 2-channel amplifier producing a potent 250W x 2 into 4 ohms

capable of powering your speakers with 100 watts (25W RMS x 4 @ 4 ohms) of break-through sound

so you'll need an active crossover (not included) to dial in the details of your dream system

Alpine R2-SB10V Marine Enclosed Systems Subwoofer Frequency range: 29 Hz toAbout the Alpine R2 SB10V Twice the bass Alpine's Halo Series subwoofer enclosures make it simple to add bass (and more bass) to your system. You'll get great bass response from a single box, and when you're ready to expand your system you can add a second enclosure and the optional linking kit to create a two speaker system with double the impact. Laying it down The R2 SB10V comes loaded with Alpine's updated R2 W10D4 subwoofer wired for 2 ohm