by NuFab on Thu 4th Mar 2010, 06:53pm
Exactly, its dual 4ohms... so it can be wired to give 2ohms or 8ohms. If your amp isn't 2ohm stable in mono mode, then it'll overheat and either shut down or melt.
Now, your amp gives 2 x 220w into 4ohms, so you could use one channel per coil to give that sub 440w, and show both channels the same signal, so effectively running it in mono mode. However, due to differing tolerances etc, it'll probably be slightly different for each channel, which is another reason why it'd be better to use a mono amp on that sub. You could use it in mono mode and wire that sub to show 8ohms, but you'll then lose power, so rather than the amp putting out 1x 880w into 4ohms, it'd probably do 440w into 8ohms.
Now, there is some argument that for sound quality purposes, you're better off with 4ohms and over, but I've no experience of that to be honest. Subs intended to run maximum SPL though usually can be configured to show 1ohm or under to the amp in order to get maximum power.
I run a 4 ohm single-coil Genesis 12" sub in my car, and the same sub in my living room as well. That sub is plenty loud and sounds amazing, but then its a very efficient design and needs only about 300w tops., which comes from a Genesis Profile Sub amp giving it about 350w.
When you ask about louder bass and sound quality, its really all down to personal taste. I wouldn't want any more bass than my current sub gives me, as i want it to blend in seamlessly with the front end. Some people like seriously loud bass, but for me its silly as the front end usually can't keep up. If you want out-and-out sound quality, you need to pick a sub and sub amp that will operate well at the level the front speakers are playing at, without overpowering them.
