Hertz Mille Pro MP 250 D4.3 10 Inch Dual Voice Coil Car Subwoofer Sub 4ohms 600wMP 250 D4. 3 PROdio Sub 250 (10) mm (in.) Subwoofers 1200 W 4+4 Ohm Extreme dynamics, unlimited power handling, realistic sound stage Outstanding performance in a compact size, this is the target of Mille Pro car audio subwoofers. On the strength of its know how acquired with Mille Legend, the R&D team has optimized the production process to offer the Hertz Sound Experience to a wider audience using part of the technologies and materials of the