Reddit mentions of 10" Sealed Subwoofer Enclosure

> https://www.amazon.com/Belva-10-inch-Subwoofer-Prelined-Polyfil/dp/B00CBO0HGK/ref=cm_cr_arp_d_product_top?ie=UTF8

Ah, judging by the links, you have more space that I initially thought. I really don't care for ported prefab boxes as they tend to have pretty high group delay, meaning they tend to sound boomy. Also they tend to use narrow L ports as a way to keep the ports short enough so they can offer below 40hz tune. It's a compromise they have to deal with. But when ports are too small (internal space wise) they tend to have poor vent velocity which means it'll probably make a chuff noise when you get into higher excursions.

The first link has 39hz tuned port. So it's more SPL than SQ due to it's 1.25 ft3 size. So since ~40hz is common with most music, it'll reach that regularly and be pretty If you want SQ, you'll want low group delay (tight bass) but that often means a huuuuge box. Basically that box will reach it's optimum efficiency at around 39 hz then any frequency below that will cause your subwoofer to lose control called "unloading". That's bad which for that you'll need a subsonic filter set at about 39hz (many amps don't offer a variable filter) So keep that in mind.

The sealed box...ah, much better. Sealed boxes have naturally low group delay which is why they sound so tight. They are smaller and better for SQ...that doesn't mean Ported boxes can't do SQ, they can only if the box is large enough and ports are large and long enough for a proper tuning (32hz tune is usually the most common compromise)

However take note that some people actually prefer looser bass, especially if they like Rap. I personally prefer tight bass even with Rap. But some like it boomy so make sure you know your own tastes. We all have certain sound characteristics (sound signatures) that we prefer. That's why audio is subjective.
Sealed boxes have a natural rolloff depending on size for the sub. But your vehicles cabin gain will basically flatten that out anyway.

Also note that (generally speaking) the +3db's efficiency that ported boxes often have as your music approaches the tuning frequency isn't a huge difference. 10 db's is twice the perceptual loudness. +3 is just where you can start to notice it *edit:( it's noticeable in comparison but nothing to write home about, lets put it that way) so don't consider it as drastic as some make it but if you don't have much amp power, it is something to consider for sure.

So a good ported box and a good sealed box can sound the same until you approach the tuning frequency, that's where the ported box can have that free boost. However, you can use a sealed and then use bass boost BEFORE you adjust your gains. So if you can boost say 35hz +3db's on your amp. Then you would adjust your gain, that way you won't go into clipping when you crank the volume...it's a cheat method to use sealed with benefits of ported however it's not free since you'll need more power than you otherwise would.

Now, is 1 ft3 sealed good for the HO? Yes it'll work well. .5 ft3 is optimal which means Dayton considers this it's size to performance ratio to be adequate. 1 ft3 will give you lower extension in frequency but you may not notice it enough to be a big deal. Larger than 1 ft3 could be iffy, if you go too large it'll sound tubby.

Do you think either of these would work well with the Dayton HO:

https://www.amazon.com/E10SV-10-Inch-Single-Subwoofer-Enclosure/dp/B0013MWT9O/ref=cm_cr_arp_d_product_top?ie=UTF8&th=1

or

https://www.amazon.com/Belva-10-inch-Subwoofer-Prelined-Polyfil/dp/B00CBO0HGK/ref=cm_cr_arp_d_product_top?ie=UTF8

I would personally go for a

Pioneer gm-d8601

Subwoofer

Box

My reason being, I know this subwoofer likes being in a sealed box... sticking a random sub into a prefab ported enclosure is a recipe for crap sound. I also know the pioneer comes with a warranty if you buy from walmart, and it makes more power than the fosgate. Not that you'll need it, 500w is plenty, but having more power than you need keeps things running cooler, last longer, etc. Nothing wrong with fosgate, especially their amps, but it doesn't match well with the Dayton Ultimax. Fosgate r500x1d makes power at 2 ohm. The Dayton will have a 1 or 4 ohm load after you wire it up. Also, there is a really good chance you won't get a warranty on the fosgate amp if you buy off Amazon.