SPL Subwoofer Box Design - or lack thereof 

Agreed. Larger subs suffer less from this issue.

And hit the spl desired? I have an idea I want but getting a design in mind is a challenge

Yes, the fire hazard is real. Since the car is also used as a home, the human natural odors mixed with the LPG vapors can easily catch fire and serious property damage may occur. I strongly advise in avoiding such subwoofers and instead use a small portable speaker placed on the dashboard, next to the dog with the bobbing head.

How do you enjoy any music without a bass knob? Even if you are a master tuner and it sounds perfect on Radiohead from 2001. It won’t have enough bass for The Police from 1986 and it will have too much bass for Suicide Boys 2021.

@@johnviera3884 that sounds like your preference just changes with the music. Some songs you want louder or quieter bass. I like to use measurement equipment and set my levels to be accurate and musical. Not exactly set flat, more like a human ear response it gets louder the lower in frequency it plays. I'm tuned to 19Hz and I'm flat to just about 16Hz. I can play just about any song and enjoy it just as much as the next song. Because there's no overly loud or too quiet with my system set just right. If something is overly loud or quiet it's the song and how it was mastered or could be my preference and want the bass louder or something. Just my view on it. I enjoy my system as is. I don't care if others don't.

@@JoshM7 I’m conflicted. I enjoyed preserving the integrity of the master recording but did they master It that way only because they didn’t have the capability to exploit the low end at that time? If you notice a lot of prestigious mastering engineers definitely are exploiting the low end now versus the stuff they did 20 years ago. To me The Police sounds better with a little more thump

@@johnviera3884 I used to want my system to be flat and try to preserve what I thought would be best for artists so I hear it closer to how they wanted it to sound like. But after I got a UMIK-1 I found out I hate flat. So I just tune my system to the way I like it and enjoy all my music.

Works only on Windows

@@AudioJudgement damn. ok, thanks!

That's more of a midwoofer for a larger sealed box. Give it 45-50l and system-Q will be around 1.

In my opinion, absolutely not.

Front / Back : 300 x 700 x 18 mm (3 pieces because of double baffle). Front panel covers the port and you will need a router to cut the port hole with a flush trim bit after the box is done. Top / Bottom : 246 x 700 x 18 mm (2 pieces) Sides : 246 x 264 x 18 mm (2 pieces) Port 1st panel: 196 x 264 x 18 mm (1 pieces) Port 2nd panel: 201 x 264 x 18 mm (1 pieces) Brace: 178 x 264 x 18 mm (1 piece). Just make large hole (circular or rectangular) in this panel to make the brace. Place the brace between the front panel and the 2nd port panel.

Thanks !! What was the actual mounting hole diameter ?

Salut! Poti sa ma contactezi pe email, dar sa stii ca nu ofer servicii de constructie boxe.

Mms is a good indicator. Large moving mass will make it harder to control the cone movement and transient response will suffer. Of course Mms is not everything, but usually it can give some information. Of course, the number is proportional to the size of the speaker, so to give you an example for a 12" subwoofer, Mms of 100-200g would probably be a musical subwoofer, transparent sounding and good transient response. Probably not have the punch people would hope for. If Mms is 300-400g, then it's most likely for high pressure applications.

@@AudioJudgement Thanks! That gives me a good parameter to focus on when comparing similar options. I've been wanting to build something for the longest time, hopefully I can soon. :)

The problem with this type of driver is it's overengineered (magnet too big etc.)