0:13:00 Rob shares his experience installing and listening to the SVS 13-Ultra Subwoofer Amplifier Upgrade Kit in his PC13-Ultra cylinder subs, which upgrades them to the features of the PC-4000 models: https://www.svsound.com/products/svs-13-ultra-amplifier-upgrade-kit Our Listeners of the Week are Matthew for his PayPal donation, plus our 124 Patreon Patrons, including Steve and Bertrand. We also want to thank […]