12 inch zcon sounds blown at higher freq. could it be the box?

[lilsoccersully 7]

hey guys i have a quick question i recently built a box for two zcon 12 inch subs.

it consists of a single 6 inch aero tuned to 37 hz only 9 inches depth in a enclosure 5.46 after sub displacement

it seems like the sub closest to the port is unloading or sounds Blown at frequencies higher then 40 hz but the one on the left doesn't do this.. could it be the encloser is causing the sub to unload and sound distorted?

i had designed a different box which would be a slot port with these specs

gross volume 6.98 ft^3

port volume : 1.43ft^3

physical port length 20.00"

port bends : no

Baffle displacement : 0.19ft^3

port area range 60-80in^2

port area 81in^2

port area per ft: 16.27in^2

net volume : 4.98ft^3

tuning frequency : 37.05 hz

2 common port walls

woofer disp. : .38

[bassahaulic 155]

It could very well be that the woofer closest to the port is unloading on the high notes making it do funky shit.

How much power do you have? Do you have any current pictures of the enclosure and it's surroundings?

[Bassboylowg 3]

Have you inspected the sub when taken outside the box, and tried a few free air sine waves? If it sounds good to you then try switching the subs into different holes to see if the one that sounded good earlier, and vice versa.

[lilsoccersully 7]

It could very well be that the woofer closest to the port is unloading on the high notes making it do funky shit.

How much power do you have? Do you have any current pictures of the enclosure and it's surroundings?

i currently have two planet audio bb2400.1 strapped at 1 ohm

a mechman 320 alt

2 runs of 2/0 welding cable (power)

2 runs of 1/0 car audio wire scosche(ground)

h/u is a alpine 123

ill pull up some pics righ now just have to run out side

[lilsoccersully 7]

Have you inspected the sub when taken outside the box, and tried a few free air sine waves? If it sounds good to you then try switching the subs into different holes to see if the one that sounded good earlier, and vice versa.

no i havent to tell you the truth and i really didnt think about that till i posted this to switching subs till now.. free aired them at 20 hz size wave -3 db at around 500 watts per sub with a a/c true rms meter and a a/c multi meter when i first had gotten them

[lilsoccersully 7]

i inspected the sub and the coils read out ok and here are the pictures of the current set up

[trod2902 26]

Thats like puttin those subs in a sealed box then punching a hole in it lol

Def needs more port

[lilsoccersully 7]

Thats like puttin those subs in a sealed box then punching a hole in it lol

Def needs more port

lol well it was tuned alot lower = more port but it only sounded good on really slowed down music

i just didnt want to build a new box with out any input is the box above have enough port?

[S.DeYoung 968]

It needs a lot more port and your current port is to close to the trunk wall. Most likely this is causing the unloading issues.

[lilsoccersully 7]

It needs a lot more port and your current port is to close to the trunk wall. Most likely this is causing the unloading issues.

got you would the sketch up above be better of a box then the current set up ?

[S.DeYoung 968]

Yes the box in the sketch would work a lot better. Your current box is maxing out your space in the trunk. Have you tried to turn your box around? Fire it into the cabin? If you did that and sealed it off from the trunk, I believe your results will be a ton better.

[trod2902 26]

Thats like puttin those subs in a sealed box then punching a hole in it lol

Def needs more port

lol well it was tuned alot lower = more port but it only sounded good on really slowed down music

i just didnt want to build a new box with out any input is the box above have enough port?

I should have specified that i meant port area

[///M5 2,833]

I am using that much port area for 2 8" mids...

Is there a reason you strayed so far from the recommended enclosure?

[lilsoccersully 7]

I am using that much port area for 2 8" mids...

Is there a reason you strayed so far from the recommended enclosure?

No sir just a new to the aero port thing read it in a couple of different places that it would sound good.. come to find out they were incorrect.. would there be enough port area from the drawing above ? Which is 81 sq*2 for 4.98 cf ?

[audio-neon 34]

That port is acting like a longer port, because of how close it comes out to the trunk, changing your tuning.

Also make sure there are no air leaks whatsover.

You need a lot more port for those subs, your sketched box would be much better.

[jonbearsmt 919]

your runny a leaky sealed box basically..odd be cause it seem like your on the right track with everything else

.

[lilsoccersully 7]

That port is acting like a longer port, because of how close it comes out to the trunk, changing your tuning.

Also make sure there are no air leaks whatsover.

You need a lot more port for those subs, your sketched box would be much better.

newbie mistake o well ill learn

cool yeah i have the mdf in the car as we speak should be coming together tomorrow

your runny a leaky sealed box basically..odd be cause it seem like your on the right track with everything else

.

oh i never got why it plays bass balling well and everything else not so well thanks makes me feel better about putting the money in the electrical and some what in amps

[lilsoccersully 7]

heres a video of the new boxxx

[S.DeYoung 968]

Better?

[Sencheezy 689]

So I take it you have much better resultz? Thoughts so far??

[lilsoccersully 7]

Better?

yessir its like night an day diffrence

So I take it you have much better resultz? Thoughts so far??

i love them so far .. just bought a crescendo audio bc5500d yesterday

[SMpaintball78 58]

i build my own box for my 2 12" zcons. 5.9cubes gross and tuned at 26hz. gets nastyy lowww. i did a 146.7@26hz thats with 2 audioque 2200's. not strapped running 1ohm per sub.

[lilsoccersully 7]

i build my own box for my 2 12" zcons. 5.9cubes gross and tuned at 26hz. gets nastyy lowww. i did a 146.7@26hz thats with 2 audioque 2200's. not strapped running 1ohm per sub.

dam man i bet it got down nasty do you have any video of them ?

[lilsoccersully 7]

heres another video of them playing that same night the new amp will be in the 16th this wensday!! i cant wait then i guess ill start a build log