Need Box Advice.
I have two Rockford P3-D4 10”s. Got them on Facebook a couple years ago. Finally figured out the levels for big bass from my Rockford 800w amp. They sound good enough, but the box they came with is tuned high and isn’t the right spec size wise. I have designed a box on a free box design website. I have the current design set to the appropriate combined cubic/ft for both woofers but am trying to decide what to tune the box too. I’ve seen some info to tune the box 2-3 hz lower than the Fs value. Which for my subs is 28hz. So I plugged in 25hz as my desired tuning parameter. Would this be okay or should I tune it to 30-32hz instead? I listen to a lot of EDM/Dubstep which have low bass. Currently those lower tones come in quieter. My other question is, if I tune the box to 25hz would I need to increase the cubic/ft of the box?