For Sale Velodyne SPL1000 MKII Subwoofer in Gloss Black. Immaculate condition. £600 inc. delivery I bought it very recently as an upgrade to my Gallo sub, but due to having a small square room (i.e. bad room acoustics) I have been unsuccessful in integrating it into my system without it overpowering the whole room even at very moderate sound levels. So reluctantly I will have to sell it on and make do with the Gallo. Thanks for looking.