10" 4-Ohm Passive Bass Tube Sub

I chose this Bazooka sub months ago. I chose it because it came loaded with a 10-Inch Woofer (can't possibly do 6.5 nor 8" sub...the size is too close to my 6.5" door speakers...seems like a violation of sorts to get a subwoofer the same size as my woofers...maybe it's just me). Initially, I had it hooked up in parallel to the subwoofer output of my stock headunit. It sounded better than the stock subwoofer (an 8-inch woofer that wasn't too bad, but that suffered because of it's metal baffle in the rear deck). I actually drove around with it like that for a few months, which coincidentally allowed the Bazooka to break-in quite a bit. The bass was pretty good at that low wattage (couldn't have been getting more than thirty watts from the deck). Finally, I purchased an Alpine MRV-M500 Mono subwoofer amplifier - 500 watts RMS x 1 at 2 ohms which ultimately gives out 565W RMS (per the included insert). I went with Alpine because of its proven track record of clean, industry-standard wattage. I mean really: what would've been the point of skipping the amplified, tuned Bazooka tube only to buy a cheap amplifier? IN addition, something I wanted to consider is that the battery and alternator in my Honda Civic is very small, so going with a quality D-Class amplifier was essential (at least in my mind). It may have taken a few months to get the money, but I thought I would be happier for it...and I was... The initial install (done by a local installer), was cool...but I'm not a newbie at this. I finally tired of the one-note reproduction of the install, and rewired it myself...using the amplifier's high-level input as opposed to the intermediate hi-low converter that the installer put in. Immediately, the full range of the Bazooka showed through. This sub, in a word, rocks! Knowing that my amplifier puts out a great amount of wattage, I have everything turned down on it (save a 3db boost at 45Hz on the amp). I listen to rap, rock, trance (love trance)...and this sub reproduces everything with great fidelity. I see some other reviewers complaining about the boominess of the sub, but I just don't see it. It took a while to get it tuned to where I want it (LPF @ 60-70Hz; 3db Boost @ 45Hz; Gain @ Min), but I can now listen to whatever I want to listen to, and it comes through clean and full from the sub... In my opinion, unless you have connections in the electronic world, there is no other sub that you're going to get with the convenience and musicality of this sub. The fact that this sub only needs a little power to perform is a plus, in my book. Of course, when I was younger, I wanted the most powerful subs, even if I couldn't afford the right amps to push it...it didn't matter. Now, with a little more age on me, I see it the exact opposite lol Now, I'll put out more for my amps and if I have to wait for the sub...so be it. Something else that should be considered with this sub, is the very small size of it. I have almost all of my trunk space still, and may end up purchasing a net so that none of my random items in the trunk slide under the Bazooka grill and damage the woofer. I've been thinking of attempting a driver swap on the Bazooka, but haven't done enough research to warrant any suggestions. Regardless, the sub is fine the way it is. It's not going to go very low (seems to begin rolling off around 43Hz), but most music does not go very low. If you want to go extremely low, you should not be looking at $100 Subwoofers w/ enclosures. $100 is the least you'll want to spend for a driver--alone. Either way, if you're on the fence, in want of a subwoofer that'll add a good amount of punch to your music, representing bass guitar notes rather well...this is the sub for you. Again, it's not plug-and-play, but that's a good thing. You can shape your music however you want...just don't buy a cheap amp. In my experience, you can normally push a driver to twice its rated power as long as you keep the wattage clean... Thus, your amp is going to be more important. Alpine is a great suggestion, but there are others...do your research.