HERTZ SV 250.1HERTZ (SV250. 1) SPL SHOW SERIES 10" 150W RMS (500W PEAK POWER HANDLING) 4 OHM IMPEDANCE CAR AUDIO MIDRANGE SOLD INDIVIDUALLY The SV 250. 1 car audio midrange is the most versatile solution for SPL dedicated installations. Like the SX subwoofers, the SV 250. 1 features a solid, robust structure and, like all the other SPL Show components, it employs a copper voice coil wound on a two layer KSV former, for unheard of thermal and mechanical capability