The Hertz SV 200L car audio woofers?was designed to offer superior performance in terms of both thermal and mechanical capability. The target has been fully hit since the woofer features a pure copper voice coil wound on KSV former, an oversized magnet and a vented bottom plate. The SV 200L employs the proprietary V-cone technology with the cone constructed from pulp with cotton fibre as well as Lossless Polymer Rubber Surround, offering a powerful low frequency response as well as the best off-axis dispersion.