It's a question of packaging really.

The sub box needs volume to extend low, unless you go Infinite baffle.

Slim subs allow you to fit subs where you can't otherwise, but really you still need the volume.

 

Yes, i can make the box volume for a shallow sub, or even a bit larger volume. Unfortunatelly our suppliers in my city can't demo a shallow sub so i can't compare.
I don't know how it will behave because of the smaller Xmax and also cone area is smaller than a regular sub.
Also the cone material i see there are lots of plastic, not paper cones, which makes me wonder. I've also seen some youtube reviews of Pioneer and others that shallow subs tend to rattle that cone plastic material
I was thinking to get 2 x 25cm shallow JBL subs. (fits the max budget) otherwise just a regular sub for the budget.

Another thing i am concerned about the fullness of the bass, the gravity and drama that a proper sub would do. Can shallow subs get close to the sound feeling? Let's say i got my box right.

I need the practicability of the rear seats to fold over so i can carry my snowboards, a regular speaker sub is kind of tricky to get a pleasent sound (not just bumping and shaking)

 

The only advantage of a slim sub is fitment. If you can fit a standard sub, in its optimal enclosure then there’s no advantage to usinf a slim sub.

 

Sounds like with the location your trying to use a shallow sub would fit better. In a 10” the two standouts are JL TW3 and Sundown Audio SD4 in my opinion. They both have impressive output and come in different voice coil configurations.

 

Indeed, locationwise would be better. If there is a night and day difference, could try to place a regular one in the trunk with a lot of ingenuity about the box and still hold my trunk-cabin space available. I just would like to know if it's really that much of a difference and if it would worth the hassle

 

You’ve been presented with some great advice and good knowledge share. But I wanted to throw a couple of other thoughts in to the mix.
i think the Prefab down firing Kicker Enclosures would work well in your application and most of them are passive radiator set ups which perform really well in you mentioned application.

The second thing I want to mention is you said something about being concerned with XMax , keep in mind that XMax is pretty much irrelevant in Ported/passive radiator enclosures. And is more important in a sealed application

 

You’ve been presented with some great advice and good knowledge share. But I wanted to throw a couple of other thoughts in to the mix.
i think the Prefab down firing Kicker Enclosures would work well in your application and most of them are passive radiator set ups which perform really well in you mentioned application.

The second thing I want to mention is you said something about being concerned with XMax , keep in mind that XMax is pretty much irrelevant in Ported/passive radiator enclosures. And is more important in a sealed application

Thanks, i was also looking at some prefab downfiring as a good option, even Mark from CAF youtube channel built one. My actual thoughts is to build an enclosure like these downfire, but to place it in this way to fire to the cabin and when needed to incline them to backwards so that i can put my snowboards in the car. It will be a tricky build tho.
I would also like to build a custom setup so that i can design the looks. and over the sub/subs at about 1 inch tall tohave a steel grile for protection and practicability.
after all it;s my daily
About the enclosure and xmax, as far as i've read these shallow subs must be placed in sealed, not ported. I still need to get to hear some shallow subs with my own ears..never heard one