Good 12" Sub at 650W RMS Sealed??

I would look into a Diamond Audio d6 the sealed recommendations are pretty much spot on with what you are looking for and it is a great sub. I have 2 of them and I am very happy with them! They say they handle 600rms but I have pushed mine allot harder than that and they take it all day!

 
That Dayton does look like a nice sub, seems to get great reviews, liking the 4 Ohm DVC version
I have 2 buying 2 more, have them in 1ft cu enclosures...prior to displacement approx .8 cu after, they sound simply awesome. You will not be dissapointed if you get one.

 
Looks like it's between the Dayton, Diamond D6, and the DC LvL 3

Still leaning towards the DC LvL 3, I just wanted to make sure that the 650W I have will be enough to make it work to it's true potential.

 
Looks like it's between the Dayton, Diamond D6, and the DC LvL 3
Still leaning towards the DC LvL 3, I just wanted to make sure that the 650W I have will be enough to make it work to it's true potential.
All three would be good choices. I personally would be stuck between the Diamond D6 and the Dayton HO, the DC I like better in a ported enclosure.

 
All three would be good choices. I personally would be stuck between the Diamond D6 and the Dayton HO, the DC I like better in a ported enclosure.
Not that DC.. it did really well sealed. I might even say it did sealed better then ported, but my ported box was a bit larger then spec

 
Infinity Kappa 120.9w or Image Dynamics IDQV3 could work well. Their optimal qtc box is around 1.2. The former has "only 350watt" RMS power handling, but it's seems like well engineered sub. I wouldn't be surprised if they under rate it. 1cu ft could work acceptably for Alpine Type R as well, but enclosure is a tad too small for it. This will result in less than optimal SQ with Type-R (compared to larger box).
I used to have a 12" Type-R in a 1.5ft^3 sealed box, and a friend of mine has a 12" Type-R in a 1.0 ft^3 sealed box. Even though his is on more power than mine was, his still sounds like crap. Peaky response, no impact, just terrible noise. It's loud, but it just makes noise, it isn't musical at all.

 
I used to have a 12" Type-R in a 1.5ft^3 sealed box, and a friend of mine has a 12" Type-R in a 1.0 ft^3 sealed box. Even though his is on more power than mine was, his still sounds like crap. Peaky response, no impact, just terrible noise. It's loud, but it just makes noise, it isn't musical at all.
I had a single alpine type-r in a sealed box built to alpine specs and it ****** as well, like you said not musical. Got loud as **** though on 600w rms .

 
I had a single alpine type-r in a sealed box built to alpine specs and it ****** as well, like you said not musical. Got loud as **** though on 600w rms .
It seems like manufacturer specs always recommend a box way too small for decent SQ. I wish I understood why. But then again, most people with subs just want the loudest package they can in the smallest space. Most don't care about sound quality, just loudness.

My box was a bit oversized according to Alpine recommendations, but it was pretty dang good for what it was. I only had $75 into the whole thing, and it was pretty decent for a first system at 17 years old. It was musical for classic rock and alternative, but anything with quicker bass hits like metal caused it to sound pretty sloppy.

 
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Mine is going in a Dodge Ram 2500 center console box. If I ever decide to pull the trigger on something I will post it when I get it installed.

The DC LvL 3 still seems to be the one I want

 
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