Originally Posted by Scott05
If ported vs. sealed is a big factor in the amp (I didn't think it ever was) then I'd say sealed as I got enough subs going on that I rather more accurate bass then boomy. I have a sealed 12" JL in my trunk that hits hard enough for me that I can't image needing a ported box inside let alone two of them. (but I'm not 100%)
Depending on room size there may be a large difference. In your car, you get a LOT OF CABIN GAIN. The same is not always true in your house. Additionally ported CAR AUDIO BOXES tend to be built for SPL over ACCURACY. They also tend to be ported to the 30-40hz range, whereas a HT sub is ported to normally somewhere in the low 20's, with the goal of covering the entire audible frequency range and if possible a "bit" below that. The port tune makes a pretty big difference in sound quality aka boominess.
I've owned a lot of car audio stuff and I can tell you that while the concepts & theorys transfer, the experiences dont because of the way your car is setup, you have a lot of factors that differ between car and home audio. So dont discount ported subs as "boomy". Badly configured subs will be boomy, sure (and honeslty your BIC is likely one of them)... but that doesnt mean everything is.
Sealed subs tend to take a lot more wattage than ported can, and its not a good or bad thing, just one of the differences. Either way with the iNuke DSP series, as you can set a high pass for your ported sub (to keep it from going over its max excursion), as well as limit the current (so you dont send it too much wattage) for a ported sub.
Keep in mind, you may need 2 sealed subs with a lot of power to get "close" to the performance offered by a single ported sub. So dollar per dollar, if you can build the "right size" ported box for your driver, you are maximizing both your performance, and your amp cost as you dont need as much amp as a sealed box (or you get the same amp and can run 2x the number of ported boxes).
All that said, that's mainly theory. To determine what would work best for you
, we need to know some specific information about your setup and your goals.
These include, but are not limited to: Room size, if its open to other rooms or fully enclosed, where you sit, where you plan to place the subs, what the largest box dimensions you can do are, how many, what amp your looking at buying, how low you want to hear/feel, etc. All of this data determines what would be better for you.
As far as ease of use, sealed is always easier to build and use, but may not be best in your scenario.
Example: I was looking to build 3 3.5 cubic foot ported boxes tuned to 19hz with each box containing a single Infinity 12" sub. I got curious how it would look if I took the same box (dimensions and all) and made it sealed. That single ported box was MUCH better than the sealed version which was actually a bit bigger due to gaining back the space from the port on paper.
So I decided to up the ante. That ported box with a single driver
performed better from about 40hz to 17hz than a sealed box with 2 drivers
(with box size staying the same). The sealed box also took a TON more power to get close to the performance of the ported box, which was using 1/2 the power (so in theory I could run 2 off the same channel of my amp and get even more performance).
The rule of thumb I've heard is that a ported box with a single driver compared to a sealed box with a single driver, will provide 6db OR MORE of SPL at the tuning frequency of the ported box and outperform the sealed box until a couple hz below its tuning frequency due to room gain.
So in my situation the sealed subs dig deeper on paper, and have a bit more SPL above 40hz, and more below 17hz, but thats about it. And at 17hz where the sealed driver overtakes the ported one, depending on what SPL you are achieving, and the distance from your listening position (and other factors), that extra SPL may not be enough to actually be felt/heard.
So again, ported can help keep get you good performance for a low cost. All of it depends on your individual situation however.
In my case, I am going sealed solely because I was able to get the drivers so cheap, the boxes will be a bit smaller (and easier to build) than the ported ones, and to get more performance I can just add more amps/more wattage at a later date, which is easier than adding more boxes.
So tell us what your working with and we can help you figure out whats best for you, in your situation