sealed BTL's?

[99grandprixGT 5,000+ posts]

i think he said 4 cubes each.

 

[duece212 5,000+ posts]

i think he said 4 cubes each.

I fail at reading the thread //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif

 

[galacticmonkey 5,000+ posts]

Yeah, 4 cubes plus polyfill.

 

[duece212 5,000+ posts]

Looks cool, would love to do something like that one day

 

[Apocalypse boy 10+ year member]

****...anybody know whats all in that 96ss? and specs on box if possible

 

[Earthman 10+ year member]

I'm guessing you're not aware of galaticmonkey's system:laugh:

im well aware of what he has,and done, aswell as others. i just dont post much here

 

[SHOemup233 10+ year member]

no

 

[galacticmonkey 5,000+ posts]

The Impala has 4 15" RE subs... Guessing SE series. Dunno how much power. Im also guessing that it has a pretty big sealed chamber and a tiny little port chamber tuned way low, probably mid-low 40hz range. Just a guess though. Might be a series tuned though.... But Im not sure.

 

[DDSC 10+ year member]

I listen to alot of slowed down rap that drops down to the low 20s. Sounds and feels rediculous on my system. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

ehh you dont count, not normal

//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif and yea that van of yours is just retarded

The Impala has 4 15" RE subs... Guessing SE series. Dunno how much power. Im also guessing that it has a pretty big sealed chamber and a tiny little port chamber tuned way low, probably mid-low 40hz range. Just a guess though. Might be a series tuned though.... But Im not sure.

are there any mechanical/thermal (power handling) advantages or drawbacks to doing the big sealed, small ported or the other way around.

Also I heard its not a good idea to port into cabin as it usually turns out sounding like crap, but I dunno if they were talking about bandpasses or just regular ported boxes. and what the hell is a series tune.

would it be a good idea to do big sealed with a small ported that was tuned to 28hz, I liked my immortal when it was in 2.5cubes at 28hz. thing was NASTY on the lows for 1 12

 

[galacticmonkey 5,000+ posts]

You will always tune a bandpass higher. Mine plays lows great and right now its tuned to 46-47hz. A bandpass tuned to 40hz or below wouldnt do very well on music.

Porting a bandpass into the cabin works GREAT. If I owned a trunk car, a bandpass is the only way I would go.

The big sealed/small ported bandpass boxes wont handle as much power, thermally or mechanically. The super tiny sealed boxes in some of the SPL cars let the speaker handle a ton of power. Alot of Extreme class cars will do 1 18 in like 1.5 cubes sealed, then like 20 cubes ported. That raises the peak very high and along with the shape and build of the cabin takes their whole passband of playable notes and condenses it into only a couple hz. This gives them rediculous amounts of sound at one frequency, but making the box not play anything else.

Read here for all thee types of boxes.

http://www.the12volt.com/caraudio/boxes.asp

This is a series double tuned bandpass.

This is a paralles double tuned bandpass.