The more I spend and upgrade on subs it just keeps getting worse. I got a single rythmik and it was so good and I was able to enjoy my movie experience. Now that I got a dual rythmik it just killed all the quality bass a single rythmik sub was producing. Lost all the punch and accuracy going duals. Xtz duals was so good and I assumed rythmik would be even better after using one rythmik. 1st image has single and dual response of rythmik. 2nd image is dual xtz. Xtz duals where 10.17, 12.17 and non identical but had no issues integrating. But dual identical LV12F just isn’t integrating. Red graph in 1st image is dual post eq and audysey. Blue graph is single post eq and audysey. Single was much accurate and punchy. With duals all I get is rumble and grunt with no punch at all. For example alita battle bar fight. Lot of punch and kicks and with a single sub it was tight and punchy. With dual there is no tightness and punch. It’s just rumbling when alita attacks or punches others. Thinking of selling both now and just get one fvx12.