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Old 10-19-2010, 12:01 PM
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Default 4th Order box - Subs Help!!

I've been in contact with PSI about building two subs. EACH will need to be able to handle a SAZ3500D and yet be good for daily use...

So, here is the response that I got:

"Man, for a 4th order, you really need a sealed box sub for it to perfom well for music. If you plan to just burp these, I can see a built up sub doing well, but such a sub wouldn't be all that great for music type use in a 4th order."


With that being the case, will this be the issue for any sub that can handle that amount of power in this box?

IF not, what sub can handle that power and yet be musical in this type of enclosure? The subs will be going into this:
Lanzar OptiDrive Dual 12 4th order. - Car Audio Classifieds

...
...
...
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Last edited by Oldbass38; 10-19-2010 at 01:05 PM.
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Old 10-19-2010, 02:52 PM
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19 views and no reply...Someone on here has got to know...
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Old 10-19-2010, 03:05 PM
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the way i have read is that its hard to get a 4th order happy sub that will handle that much power....the way i see it is i would get the best sounding 4th order sub and not worry about power...1000watts will not make to much of a difference. lol
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Old 10-19-2010, 03:14 PM
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I guess if it were me I'd look for subs with a mid to high qts and relatively low hz. Look for 2 12" TC3000s or axis's or whatever they're called now a days. I'm sure TC2000's or Revos would do good in that enclosure too.
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Old 10-19-2010, 03:14 PM
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Quote:
Originally Posted by treylittlefield View Post
the way i have read is that its hard to get a 4th order happy sub that will handle that much power....the way i see it is i would get the best sounding 4th order sub and not worry about power...1000watts will not make to much of a difference. lol
David has PM'd me some more about this...I think I have a better understanding now...

Here's the PM conversation..(I'm posting in case someone else wants to be educated like me )

DAVID A.K.A PSI:

"Its about the amount of power you want to use. No one is going to be able to make a decent sounding 12" sub to work in a 4th order and take 4000 watts!

About the best you're going to be able to use on a good sounding sub in that box is 2000w rms for daily use.

You can do it with the large subs that I quoted you for, but dont expect a great sounding system. It will peak loud, and would probably be good to burp, but music will sound like complete azz.

Basically, youre asking for something tha does not exist, and currently cannot exist... a 4000w rms sealed box subwoofer that sounds great.

Oldbass38:

Ohhh...So, the box would basically need to be scrapped for a more traditional ported box and that would be "more" musical?

DAVID A.K.A PSI:

"Either that or just decide that you DO NOT need to use 7000 watts for 2 12" subs. Thats just more power than is necessary to get thir optimum output.

You'll waste half of that power in raw heat."
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Old 10-19-2010, 03:19 PM
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What are you wanting us to tell you?

david is right.

Look at my sig, thats less than 2k going to a 12" by him, and its at full excursion.
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Old 10-19-2010, 03:22 PM
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Originally Posted by F3M4 View Post
What are you wanting us to tell you?

david is right.

Look at my sig, thats less than 2k going to a 12" by him, and its at full excursion.
He's pretty much clarified what I needed to know so I don't expect to learn anything else...Basically I didn't know that having a 4th order box had its limitations....Not that it isn't performing with what it already has....But you know how you always want more! The biggest thing was trying to see how much I could get out of that box....I'm all good now!
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Old 10-19-2010, 03:27 PM
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I personally was thinking of four dc lvl4s with lvl5 coils extra spider and dual tinsel. I hear those can handle around 2,000rms if there done up like that and a sealed box and using a smaller box than they recommend. That was just my idea to try to throw as much power as I can
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Old 10-19-2010, 03:29 PM
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Quote:
Originally Posted by Oldbass38 View Post
He's pretty much clarified what I needed to know so I don't expect to learn anything else...Basically I didn't know that having a 4th order box had its limitations....Not that it isn't performing with what it already has....But you know how you always want more! The biggest thing was trying to see how much I could get out of that box....I'm all good now!
Any enclosure has its limitations, not just 4th orders. If you want to run that much power to woofers in a 4th order, you'll need more woofers. Or you can sacrifice the sound of them. It's your choice. Oh, and go read this: Silly power handling requests.... Your sub isnt going to handle 5000w rms!!! -READ- - Car Audio Classifieds
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Old 10-19-2010, 03:36 PM
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I've got 600 watts on a pair of 12" AA Avalanches** right now and gets plenty loud and pretty low also. The amp I will ultimately end up using is 1600 watts and it might be overkill...we shall see.

**I should have mentioned it is in a 4th order.
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Last edited by Hertz5400LincolnLS; 10-19-2010 at 03:39 PM.
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