4 nighshade 18s yukon xl build 155+ 16v

you need a different box design... that one isnt gonna work. loose the aero ports. and go for a slot port...
A port is a port is a port. Flared ports are more effecient and will work just fine.

A large slot port will work as well but you wont have the versatility of being able to retune the box without rebuilding.

You would be suprised how much air a single 6" aero can move.

 
box will be fine
nope... not for 4 18s...

his box is gonna crack at the seems... and those aero ports are for spl.....

he's tuning to 27 hz... thats not a spl tuning frequency

good luck and im glad you have time to waste on building boxes...

 
box should be fine, but i might would add one or two more 6" just to be on safe side //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
you better plan on doubling up every wall you have on that box because your gonna hit a speed bump and the sides will blow out....

and you wont know why your shit sounds like shit afterwards either

 
nope... not for 4 18s...
his box is gonna crack at the seems... and those aero ports are for spl.....

he's tuning to 27 hz... thats not a spl tuning frequency

good luck and im glad you have time to waste on building boxes...


who are you? have you ever messed with a nightshade 18 before? i think not

and btw as long as his box is well built he should be fine...

my last box was for 2 18's 4 cubes each. peak at 43hz... for burps i had 4 sundown 3500Ds a .25 each amp and the box held together just fine...the box was single layered and the sub/port baffle was double layered and thats it...

oh and playing money man(38 and 34hz i think) on two american bass 500.1's did just fine....

 
who are you? have you ever messed with a nightshade 18 before? i think not
and btw as long as his box is well built he should be fine...

my last box was for 2 18's 4 cubes each. peak at 43hz... for burps i had 4 sundown 3500Ds a .25 each amp and the box held together just fine...the box was single layered and the sub/port baffle was double layered and thats it...

oh and playing money man(38 and 34hz i think) on two american bass 500.1's did just fine....
and once again!!!

HERES YOUR SIGN

I see you one of those mindless puppets that think because you built one box for 2 18s that you somehow have an idea what it takes to build a box that holds four of em...You have a long way to go if you thing a 3/4 in wall in a box holding 4 18s is gonna hold.

i'm trying to save this guy a big headache... and your popping in with stupididy, and its yours to boot...

and to your question of "who are you" i'm batman....

 
and once again!!!
HERES YOUR SIGN

I see you one of those mindless puppets that think because you built one box for 2 18s that you somehow have an idea what it takes to build a box that holds four of em...You have a long way to go if you thing a 3/4 in wall in a box holding 4 18s is gonna hold.

i'm trying to save this guy a big headache... and your popping in with stupididy, and its yours to boot...

and to your question of "who are you" i'm batman....
YOU MAKE ME LAUGH WITH YOUR STUPIDITY

 
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