gally Posted April 6, 2012 Report Share Posted April 6, 2012 Hi! so i was looking at our forums(in my country) and a guy said that if you want to look for subwoofer effectivnes you must not look at the Sd but the Vd what is this Vd????? Quote 2010 Chevrolet Cruze Radio --- pioneer mvh-200vbt Front/back --- alpine type s 6.5" Sub Control --- Pac LC1 Sub Amp --- GZPA 1.4K Sub --- GZNW 15XSPL D1 Battery - GZBP 12.2500X Link to comment Share on other sites More sharing options...
jrchevy87 Posted April 6, 2012 Report Share Posted April 6, 2012 • Vd - Maximum linear volume of displacement of the driver (product of Sd times Xmax), in cubic meters. "This parameter is the Peak Diaphragm Displacement Volume — in other words the volume of air the cone will move. It is calculated by multipying Xmax (Voice Coil Overhang of the driver) by Sd (Surface area of the cone). Vd is noted in cc. The highest Vd figure is desirable for a sub-bass transducer." Quote Jeep Wrangler TJ Hardtop Build Link to comment Share on other sites More sharing options...
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