.XW-500d and XW-300d subwoofers are famous for their outstanding performance and remarkable out put. Both come equipped with almost same features. But XW-300d subwoofers incorporate an 8-inch driver and a 300-watt Bash amplifier. XW-500d subwoofers can be well-marketed due to its hard-hitting intensity and clean output via a 10-inch driver and a 500-watt Bash® amplifier. XW-500d and XW-300d subwoofers, both the models come with stylish black grain anodized aluminum extrusion enclosures with piano black gloss trim accents. Price for each XW-500d is $999 and $699 for each XW-300d.