2 ported or 4 sealed? in a car

[eastman474]

well like glowbug said these L7's are ported drivers so two ported is most likely gonna be better.

my buddy has two of these ported and they are loud as hell ,not the cleanest sounding but like you said you just want noise. personally id rather have a mixture of both spl and sql

[Ground Zero]

Hi everyboy

Thanks for the parameters BP1Fanatic

but for the pics of the box i can't see it at full size when i click on it ?

[BP1Fanatic]

Here ya go GZ!

[Ground Zero]

Hi guys

Thanks for the pics BP1Fanatic

It's a good box but you must have a big car to put it in

But i don't know the software is used to simulate the box
someone know the software please ?

Thanks a lot

[tsmith1315]

Hornresp is the program.

Search the forum -there is a thread from the author with links, or just search the web.

[Ground Zero]

Hi

Thanks i found Hornresp

[BP1Fanatic]

Originally Posted by Ground Zero

Hi guys

Thanks for the pics BP1Fanatic

It's a good box but you must have a big car to put it in

But i don't know the software is used to simulate the box
someone know the software please ?

Thanks a lot

No problem GZ!
Thanks, it's a 1996 Ford Ranger XLT SuperCab pickup truck.
Hornresp > Telstra BigBlog -

[mavric]

i know i am new to this site, but not to car audio. Our primary box we sell is vented, every kicker woofer, l7 l5 cvr, had a ton of output for a short period of time, the voice coil on those woofers is not that large, as mentioned earlier, round CVX is an awsome vented box woofer. But if your are running 1200 rms (by the way, who and what kind of amp) a vented enclosure is way to efficient that amount of power, sealed box will help with over excursion of the l7 as the winding on the coil is shifted lower on the voice coil former, thats where power and sealed come in, sealed box will act like a vacuum to help contrl your xmax and protect the coil. As mentioned too, the factory spec box maybe wont sound the best, but kicker is funny about warranty issues. If you get them from an authorized dealer, the first blown woofer is replaced, the second has to be sent in or back leaving you without a speaker.
What kind of h/u are you using?curious, 4 amps would need a line driver to protect signal loss.

[BP1Fanatic]

Originally Posted by mavric

sealed box will help with over excursion of the l7 as the winding on the coil is shifted lower on the voice coil former, thats where power and sealed come in, sealed box will act like a vacuum to help contrl your xmax and protect the coil.

That's EXACTLY why I prefer to use BP1/FLH boxes and mount the voicoil in the vented or horn section of the box. The sealed section controls excursion below cutoff and the vented section keeps the voicecoil cool. I'm amazed how alot designers don't consider that when making front loaded horns. I would add the speaker's volume to the compression chamber. As you can see in my pics above, that is exactly what I did in my L7 box.

[scampo77]

that is a super funny looking box and it really peaked my interest. i would consider building a couple of these if i could somehow stand them vertically.
can i change the way the ports are aimed?

maveric you said "as the winding on the coil is shifted lower on the voice coil former" is this something specific to these speakers? do you mean that the coil sits lower on a L7 for some reason? the reason i ask is because i have the coils out of the speakers right now and i can place them any way i like when i put them back in.

i have 2 JBL amps driving the subs they are bp.1200.1. and i have 10 amps and the head unit i am using is just some cheap radio i found on sale for 99$ that has a tv in it. i never considered boosting the signal from the radio.