6th order or typical ported more spl?

[o. l. t. 10+ year member]

I dunno what it would do with a non aluminum sub on the market today, but back in the day none of the Kevlar coned subs could do much in this box. It had to be aluminum to resonate correctly.

This box was something I whipped up in 1999 - 2000 because I could not get the GS Designs GSD12 to hit well in ported or sealed. I sat down with a sheet of wood and made the box to where I could move and tune the walls until I liked it and this is what came out of it.

23 inch long port, 14 inches high. The combination of front and rear wave was so detuned from each other it hit with full force across the spectrum. It is still my favorite box to this day. Ya gotta forgive the condition of the box, it's been through 6 yrs of hell and I've still not blown the sub. That's one way I know I got the design right //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[djman37 5,000+ posts]

im currently running a decware hwk it works great, but i seem to be moveing more towards spl?
http://i2.tinypic.com/1zyzfxt.jpg

i always read the HWK needed too much room to do well in a car. My 30x36 would stand up in the rear of the Xterra.. i think ramos on here did his that way for a pic too.

You might try an iso loaded ABC box?

 

[etznova 10+ year member]

i foyu have a chance check out my thread over on termpro its in the spl section and its titled camp bandpass i starte out with a box designed by toxic bass and went from there i am currently back to that box and with 2000 watts in a bonnville i pulled a 148.6db oh yeah my box is a 6th order series tuned (i think that is what we came to the conclusion of) anys lots of good reading

i would have posted a link but i cant get into the forum at the moment it says the it cant find the server i have that problem alot

 

[vetkilr 10+ year member]

Yeah I wanted to do a 6th order on a 12L7 but couldnt get anyone to return a pm for a box design...........I would still do one.

 

[etznova 10+ year member]

i think in my thread some said it was 80 inches that said actually that a 4th order would be better for the l7 check with him i think he has some designs from kicker or something like that

 

[vetkilr 10+ year member]

Yep got one............muhahahahaha

 

[etznova 10+ year member]

well get to building it and throw up some pics put it over on termpro in the bandpass camp thread so we can keep it going

 

[vetkilr 10+ year member]

1.5 sealed into 2.0 ported with 60 square tuned to 50hz......thinkin hard.

Or gonna try both L7s with 1.2 sealed each into 2.5 ported with 80 square tuned to 58 hz.

Dont know which yet. But the larger is gonna really be hard to fit and I mean really hard and might need to be made even smaller.

 

[80INCHES 5,000+ posts]

Yeah I wanted to do a 6th order on a 12L7 but couldnt get anyone to return a pm for a box design...........I would still do one.

i would do 4th order with L7's because i have the specs kicker recommended for a 4th order bandpass

80

 

[CBFryman2 5,000+ posts]

While it is true that you get a DB boost from ported/tuned enclosures, all you really have to do is tune for that one magic frequency you plan on going for to hit your number. You can do that a number of ways.
Personally I like a sealed small enclosure that can handle higher wattages. You can tune to hit your frequency, and use higher power behind the subs. You also stand a better chance of being able to use it as a street system since it is likely to play on more notes than a tuned port.

Since you are going to hit a higher note for DB drag, this works out good.

For someone running McIntosh you sure dont know much about SPL.

Ported enclosures will always greater mechanical powerhandleing above tuning unless the enlcosure is too large for the driver.

 

[vetkilr 10+ year member]

i would do 4th order with L7's because i have the specs kicker recommended for a 4th order bandpass
80

1.5/2.0 is a lil bigger then Kicker says aint it:up2somet:

 

[80INCHES 5,000+ posts]

1.5/2.0 is a lil bigger then Kicker says aint it:up2somet:

yea...but its gear more towards highoutput and serious lowend:up2somet:

80

 

[vetkilr 10+ year member]

We shall See............muhahahahaha

Now I need a Box Designer.

Wonder how many watts this lil L7 can handle in this box???

 

[etznova 10+ year member]

For someone running McIntosh you sure dont know much about SPL.
Ported enclosures will always greater mechanical powerhandleing above tuning unless the enlcosure is too large for the driver.

could because mcintosh is geared towards the sound quality arena

 

[CBFryman2 5,000+ posts]

Doesnt matter. prefering a high Q sealed box for SPL?