boombox

iTrader: (4)

i use bassbox sometime but its not 100% accurate but its always a starting point

StickyFingaz

iTrader: (4)

"The ideal size recommended by Alpine is 1.25 cu/ft. One 4" diameter x 13" long port should be used with the 1.25 cu/ft enclosure."

What would an equivelant vent size be?

StickyFingaz

iTrader: (4)

I am thinking of using the following eclosure design:

Any comments or suggestions?

Also 3 questions:

1. Does the enclosure below require any additional bracing, should volume be increased?

2. Should i use a connection box or is it better to feed the speaker wires directly through a hole in the box and seal it afterward?

3. Should i use polyfill to line the interior of the box, if so how much and should it be stuck to the walls with adhesive?

Masterballer

can you please make me a pic like the above but it has to have a length of 30" to fit in my car, i dont know anything about boxes so the help would be very helpful....

chrisx3

That was done with this program http://www.subwoofertools.com/forum/ported-box.asp

Masterballer

but whats the driver displacement for one type r 12" sub? i cant find it on their site

chrisx3

Well the older type r's displacement is 0.128 ft^3 and the newer 05/06 is 0.071 ft^3