How about putting bass where there is no space, that's right. The SW10D4 shallow subwoofer series is designed for small and tight application and
are easy to fit in any vehicle. Dual 4-ohm voice coil and power handling
rated at 500 Rms.
Overall Diameter: 10.5"
Cut-out Diameter: 9.2"
Mounting Depth: 3.7"