multiple sub common chamber box

[Eric]

I'm getting ready to redo the wall in my car and make it a common chamber.  Does anyone have any input or suggestions on this type of setup?  There's going to be 16 10's ported.  How much more efficent will the subs be and how should I figure out how big the port should be?  If I put in specs in my box program (Bass Box Pro), will it show acurate results with that many subs?  Thanks in advance for any help and or advice.

Eric

[Ray]

port general rule is 12sqin per cuft of enclosure.. bbp6 will work just fine.

[Forevrbumpn]

common chamber is how you can gain some spl. Supposivly the achievment is supoosed to be 1.5db when you switch from seperate to shared chamber (2-subs seperate/2 subs common-thats what the MECP study book says when I studied for it a few years back) But No, that does not mean you will gain 24db by going from a wall of individually sealed boxes, to 1 common chamber box, but there will be a gain. Another thing I remember was that individual boxes, over common chamber increase the lows, and common chamber increases the higher freq portion -and no, none of it would be audibly noticeable, only mic'd can tell a difference. People run subs common chamber all the time in walls, and boxes, and tune low, and get some extreme low freqs, like ofcourse, look at meade. 4-18s common chamber ported, and Ive heard it, well, it hurt me-incredible lows

[David]

I prefer common chamber, less work, imo easy to design.

I will be doing a wall with 2 18's in a common chamber, I say go for it.

[kingsuv]

Common chamber is easier and will save you valuable air space when running that many subs. If BBP doesn't like you using that many subs (as it doesn't for me) then work it out in a smaller group or one by it's self then add for the rest. with a wall, depending on what kind of car it's going in, you might be limited on how much space is left for the port. I have 16-12's and have very little room for a port.

[mrwigglezdj]

i have 12 10's in a common box, very easy to build and tune in my case(big ass van) but with 16 of them in a wall you might have to get creative with a port but all and all common is much eaiser to make for that many vs haven x amouont of ind. boxes...