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gc86
03-21-2006, 02:41 AM
making a ported box for 2 oz audio matrix elite 12in woofers, dual 4-ohm, i need some ideas, oz recommends 1.5 after displacements tuned to 34hz, should i tune higher to increase my spl? i'd sacrifice a little sq for sql, max dimensions are about 28in wide, 16in high, and say maybe 22in deep? im thinking i want to use ports instead of a vented box to save space and im lazy, anyone care to make me some plans?

gc86
03-21-2006, 04:11 AM
bump ~!

Pyro_By_Nature
03-21-2006, 04:35 AM
Shakee Shakee $10

gc86
03-21-2006, 04:47 AM
huh

Pyro_By_Nature
03-21-2006, 05:10 AM
lol, ****** south park quote.$10 for a box design.

gc86
03-21-2006, 05:16 AM
i think imma use this http://img30.imageshack.us/my.php?image=32cubes28hz435sqin9pz.png

gimpster80
03-21-2006, 05:58 AM
I would not use a ported box for this particular speaker. Especially if you wish to compete, it has a terrible alignment for ported yet sealed is impressive. using the following.

Qts .66
Vas (ft3 ) 4.9? having difficulty converting liters to feet cubed estimate
Fs Hertz 33
Vb (ft3 ) 2.0 cu ft

Qtc = 1.22
Fc = Hertz 61
F3 = Hertz 44

although a rather large box for freq production I assume this sub is designed for competition, you would do well with a 2.0 cuft sealed enclousure, just get some power!

gimpster80
03-21-2006, 06:07 AM
Also, a Qtc of 1.22 is going to have a strong bass emphasis with a loss in deep tones, hense "boomy", excellent for competition but poor for sound quality, if you do decide to use the 2.0 cu ft enclousure, you can try some poly fil from wal-mart to take the edge/harshness off a little, then when you get ready to compete take it out.

gimpster80
03-21-2006, 06:09 AM
NOTE the 2.0cuft enclosure is for one speaker not two.

matt_martin87
03-21-2006, 12:06 PM
Something that's been bothering me for some time now:

Port = Vent

I can not stand hearing: "I was going to port it, but then I decided venting it would be better." Both are the same, but there are different types. There are slot ports, and there are tube or pvc ports.

I'm not trying to be critical of any one person, it's just a pet peeve of mine that I needed to get off my chest.

Worlddre
03-21-2006, 12:32 PM
I would not use a ported box for this particular speaker. Especially if you wish to compete, it has a terrible alignment for ported yet sealed is impressive. using the following.

Qts .66
Vas (ft3 ) 4.9? having difficulty converting liters to feet cubed estimate
Fs Hertz 33
Vb (ft3 ) 2.0 cu ft

Qtc = 1.22
Fc = Hertz 61
F3 = Hertz 44

although a rather large box for freq production I assume this sub is designed for competition, you would do well with a 2.0 cuft sealed enclousure, just get some power!
shut the hell up you know nothing thread starter do what you want and ignore this idiot

gc86
03-21-2006, 03:06 PM
Something that's been bothering me for some time now:

Port = Vent

I can not stand hearing: "I was going to port it, but then I decided venting it would be better." Both are the same, but there are different types. There are slot ports, and there are tube or pvc ports.

I'm not trying to be critical of any one person, it's just a pet peeve of mine that I needed to get off my chest.

Im aware that a ported and vented enclosure pretty much do the same thing, just that ported is usually easier to build... you have the luxury to start off sealed and port in the future if necessary. I understand where your comming from though ;)

PhatTonyDeMarco
03-21-2006, 03:17 PM
Im aware that a ported and vented enclosure pretty much do the same thing, just that ported is usually easier to build... you have the luxury to start off sealed and port in the future if necessary. I understand where your comming from though ;)

He is saying that a port and a vent are the same exact thing... You are talking about a SLOT port and a ROUND port (round would be your 'port')...

PV Audio
03-21-2006, 08:36 PM
I agree with martin, people think that vented and ported are different. That's like saying that you crawled down an air duct and someone disagrees and says that it's called an air vent.

goose5741
03-22-2006, 01:23 AM
I agree with martin, people think that vented and ported are different. That's like saying that you crawled down an air duct and someone disagrees and says that it's called an air vent.

Best analogy ever!

gc86
03-22-2006, 03:20 AM
i think imma use this http://img30.imageshack.us/my.php?image=32cubes28hz435sqin9pz.png

built the box today, didn't fit in trunk, im fcked, anyone care to make me plans?

Mike516882
03-22-2006, 03:09 PM
hahahah u didnt bother to measure the space u had available first...wow:handclap:

j3bus2k3
03-22-2006, 03:34 PM
Build a frame of the box using something like 2x1's...cost me $5 to mock up a box.

gc86
03-23-2006, 03:39 AM
hahahah u didnt bother to measure the space u had available first...wow:handclap:

as a matter of fact sir, i did measure the max dimensions of my box and the size of my trunk opening, i was off by maybe 1 inch if that, its almost impossible to factor in the trnk opening and the internal dimensions... its not that much of a loss anyways, i have a few potential buyers for the box and it only toke me about 3 hours max to build it...

gc86
03-23-2006, 03:41 AM
Build a frame of the box using something like 2x1's...cost me $5 to mock up a box.

yeah, ill probably do that next time, i just finished another box that fits in fine, its 30in x 17in x 15.5 and has about 3.1 cu ft internal volume after both of my subs and pcv ports, each sub needs about 1.5 so hopefully it sounds good, just waiting on my 2nd sub to come in sometime next week