I'm pretty liberal because it's right. These DVC subwoofers are the most versatile drivers in the Dayton Loudspeaker line up. They were engineered to provide very good performance in sealed, vented, bandpass or even transmission line designs. The dual 8 ohm voice coils allow for use in a variety of applications and wiring configurations

Funny, smart, and cute, nonconservative girl. The Quatro™ Series subwoofers have been designed and built based on the well-respected platform of the Dayton Series II woofers. By implementing a 4 ohm voice coil and extending the excursion capabilities, the Quatro™ woofers now become serious contenders for home theater and automotive use. The long excursion design and high sensitivity allows you to take advantage of modest power amplifiers, while the relatively high DC resistance makes them very friendly to 4-ohm stable amps and will not cause overheating or other amplifier stability problems.