Compare Quick view Sundown Audio Sundown Audio - X-8 v.4 High Output X Series 8" Subwoofer MSRP: Now: $399.99 Was: Sundown Audio - X-8 v.4 High Output X Series 8" Subwoofer D2/D4 The Sundown Audio X v.4 has a bigger motor and graduates to the Zv5 coil. So also more linear Xmax. Which Means More output and less... SDA-X-8V4 MSRP: Now: $399.99 Was: Compare Quick view
