• 13" woofer with cast Zamak frame

• Polyglass cone

• 51 mm edge wound flat copper voice coil

• Large pole vent

The Focal 13 V 7512 D has high efficiency with long Xmax and good bass extension.  It features a rubber surround for long stroke and long life. Ruler flat to 800 Hz crossover. For best performance use a 170 liter vented enclosure for -3dB at 26 Hz.  The port tube is 23 Hz, use two tubes each 4 inch diameter by 16 inch long. A 105 liter sealed box is - 3 dB at 40 Hz.