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SPL 6th order help me out smart guys

 

Gold Member
Username: Deadrabit

Marionville, MO

Post Number: 2398
Registered: Jun-07
i know glasswolf and canan know a lot about this
i have a single square 12 L5 laying around . i thought i might use it.. but i can get something different if it is going to make a difference.
the build is for a 2004 GMC sierra.. so not a lot of room to play around with.
i want to get as loud as i can and i think a 6th order is the way to go if i can fit one in this truck. but i have never built a 6th order before, and i am unsure about were the ports should face and what to tune too and cuft of each chamber.
i can get the sub in a sealed box and do a sweep if u guys would like.

i am pretty much just wanting to know how to do this right the first time and be loud.
 

Gold Member
Username: Deadrabit

Marionville, MO

Post Number: 2399
Registered: Jun-07
this is all i have found
http://www.carstereo.com/help/Articles.cfm?id=32
 

Gold Member
Username: Southernrebel

Monroe, Louisiana Team Audible...

Post Number: 8017
Registered: Mar-04
What version L5 do you have? T/s?
Single cab or what? Blow thru?
Do you want a one note wonder? Good range? Sick lows? or what?

Get me that info, I'll crunch some #'s.

The link you posted gives info on a parallel tuned 6th order, a series tuned may be better for your needs.
 

Gold Member
Username: Deadrabit

Marionville, MO

Post Number: 2400
Registered: Jun-07
it is the newer L5.
this are the specs.
http://www.kicker.com/sites/default/files/L5_0.pdf
it is dual 4

this is a one note wonder, i want spl only i dont think ill play music on it at all.
the truck is a single cab. not a blow thru
 

Gold Member
Username: Deadrabit

Marionville, MO

Post Number: 2401
Registered: Jun-07
it is the newer L5.
this are the specs.
http://www.kicker.com/sites/default/files/L5_0.pdf
it is dual 4

this is a one note wonder, i want spl only i dont think ill play music on it at all.
the truck is a single cab. not a blow thru
 

Gold Member
Username: Southernrebel

Monroe, Louisiana Team Audible...

Post Number: 8020
Registered: Mar-04
how much power do you have on tap?

In that truck, I would not do a 6th order unless its a blow thru. given the space you have, a ported box will likely be your best bet.

You won't be comfortable driving, but sub up (or forward), 6" flared port to passenger side can get LOUD in that cabin. Depending on power, 1.5-2.25cuft will do you.
 

Gold Member
Username: Deadrabit

Marionville, MO

Post Number: 2402
Registered: Jun-07
we have to stay under 500 clamped.
u really don't think i can fit a 6th oder in that thing?
comfort is not really important. we will take it out after comps. we just want a good far t box..
i kinda think if we could pull of a bandpass itwould be louder
 

Gold Member
Username: Southernrebel

Monroe, Louisiana Team Audible...

Post Number: 8021
Registered: Mar-04
no, just go w/ a ported box. you can get good results w/ 6th order, but I would say away for this install.

Give me some workable measurements in cabin for the box...I think you have 60" wide to work with in that vehicle. But give me measurement to the first lip in the back wall of the truck, should be around 14-15" iirc. Also, max depth, take into account the distance from center console to back wall.
 

Platinum Member
Username: Glasswolf

Lexington, SC USA

Post Number: 13340
Registered: Dec-03
http://www.diysubwoofers.org/bnd/6thorder.htm


go there
click the "box calculations" link to the left
read that page
 

Gold Member
Username: Deadrabit

Marionville, MO

Post Number: 2403
Registered: Jun-07
thanks glasswolf!
ill get u those measurements tomo!
 

Gold Member
Username: Deadrabit

Marionville, MO

Post Number: 2406
Registered: Jun-07
looks like we have 25x62x14

in this class we can burp with the doors open or anything really.
let me know what ya think!
 

Platinum Member
Username: Glasswolf

Lexington, SC USA

Post Number: 13365
Registered: Dec-03
remember when you calculate box volume, you need to add the displacement of the driver and the port itself to the volume so the volume is just the air itself. you dont want to calculate the box size, THEN drop the sub and the port into it, reducing the actual volume.

make sense?
 

Gold Member
Username: Southernrebel

Monroe, Louisiana Team Audible...

Post Number: 8023
Registered: Mar-04
Any chance you can get me some SPL #'s w/ a 'control' speaker box?
Like 40hz, 45hz, 50hz, 55hz, 60hz, 65hz?

You may be able to get some good #'s out of a 6th order, but tweaking and tuning will be hell. And think about this, When did you last see a dBDrag Street, USACi Stock/Pro-Stock or other similar class w/ big #'s and a 6th order box? You seen them in USACi Mod some and dBDrag N/W, but not nearly as many as ported.

I would still stick w/ a ported box in that truck. 12.5" x 12.5" x 36" sub up on the drivers side, 6" or 8" port firing toward the passenger side wall ~16-22" long (test lengths). Block off the box w/ a wedge under the sub if possible also. (test without it first). That design just WORKS in single cabs.

You might even chop the box down as far as 20" and make the ports longer depending on he the sub is loading. But w/ the low-ish power you have , the larger box may help.
 

Platinum Member
Username: Glasswolf

Lexington, SC USA

Post Number: 13370
Registered: Dec-03
I'll mess around a bit with bassbox and x-over pro and see what I can squeeze out of a 6th order box on a notch filter if I get time tomorrow.
 

Gold Member
Username: Deadrabit

Marionville, MO

Post Number: 2407
Registered: Jun-07
alright thanks glasswolf!
it has been so long sense we got a sealed box to sweep in that truck.
but i think it was 48.... but i could be wrong.
 

Platinum Member
Username: Glasswolf

Lexington, SC USA

Post Number: 13389
Registered: Dec-03
due to the small cabin, a truck acts as a second chamber for the sub box. this causes a lot of issues with output
 

Platinum Member
Username: Glasswolf

Lexington, SC USA

Post Number: 13399
Registered: Dec-03
try this?

http://www.glasswolf.net/misc/sixthorder.png

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