Thismodel comes in the standard 12-inch size, which is perfect for fitting it into most modern vehicles. Skar has been making some of the best competition subwoofers on the market. The VXF is one hard-hitting machine. It comes with dual 2 ohm voice coils. It is also capable of excellent power handling. Thisitem: H YANKA 10 Inch Subwoofer - 10 Inch Paper Cone Subwoofer Car Audio, Black Steel Basket, Dual Voice Coil 4 Ohm Impedance 10 subwoofer, 1000W MAX Power 10 inch Competition Subwoofer . $89.99 $ 89. 99. Get it Sep 13 - 19. Single Voice Coil 4 Ohm Impedance, 440W MAX Power and Foam Surround for Vehicle Stereo Sound System. Findhelpful customer reviews and review ratings for Polk Audio db840DVC 8-Inch Dual Voice Coil Subwoofer (Single, Black) at Amazon.com. Read honest and unbiased product The Owner's Manual provided covers both the DB840 (single voice coil) and this DB840DVC (dual voice coil), and provides several wiring diagrams for both. If your setup at 4:40. 2. As @Justme says, it's all about size. ;) A subwoofer will have larger excursion and a larger diameter magnet and a larger cone diameter and a larger mounting depth and will move a larger amount of air per cycle. A tweeter will be at the opposite extreme for all of those. The voice coil diameter will follow the magnet Thisitem Hifonics BRW15D4 3000 Watts 15 Inch Brutus Car Audio Subwoofer with Heavy Gauge, Powder Coated, Aluminum Die-Cast Basket, Dual 70 Oz Magnet, 3 Inches Voice Coil - Dual 4 Ohm - 15 in Audiopipe TXX-BDC4-15D2 Subwoofer Quad Stack 15-inch 2,800 Watt High Performance Powerful Dual 2 Ohm DVC Vehicle Car Audio Subwoofer Speaker System, Black GenerallyI use single coil though due to mod size, battery usage, atomizer size, and coil fitment within those. Strictly speaking, you get more flavor from dual coil but due to other factors I tend to be happier with single coil and get about equivalent flavor. For the size difference, my regular daily single coil mod is the size of a deck of .

difference between single voice coil and dual coil subwoofers