http://www.musical-instruments-for-all.com/333804/mackie-hd1801-16/mackie-hd1801-18-powered-subwoofer.html YEARLY 2016-12-15 1 http://www.musical-instruments-for-all.com/374419/mackie-hd1801-16/mackie-hd1801-1600w-18-powered-subwoofer.html YEARLY 2017-01-17 1