FINALLY! i hit 150 DB's

[Savstyle 10+ year member]

congrats

 

[basscort2009 5,000+ posts]

thank you

 

[snb778 5,000+ posts]

its about 2500 rms after rise. its flared on one side. the outside. and its sewer pipe that amartin72 made custom for me.

i would think you want the flair on the inside of the box so air can easily enter it vs. exit.... never understood how the flare on the outside of the port helps but... hey... milestone for you... nice job.... esp. w/ 1 18 on 2500W.. pretty impressive

 

[basscort2009 5,000+ posts]

i would think you want the flair on the inside of the box so air can easily enter it vs. exit.... never understood how the flare on the outside of the port helps but... hey... milestone for you... nice job.... esp. w/ 1 18 on 2500W.. pretty impressive

its one 15. and i didnt get it flared on the inside becuz i was actually covering a wrongly build slot port with a baffled aero. and slor port opening was only 8" so it squeezed in there on the inside but couldnt flare.

 

[shakinghorizons]

What frequency you use?

 

[basscort2009 5,000+ posts]

box is tuned at 52 and i burped at 57 htz.

 

[snb778 5,000+ posts]

wow.. even more impressive.. i was gonna say I have an 8" aero on my 18.. should go bigger, but for a 15... that gave ya the extra I would have recommended....

I like aero's.. but they are really hard to get the tuning right... i've heard you only need 1/2 the port of a slot box with aero's.. yet the performance of only using 1/2 was pretty bad

how much port per cu./ft you givin it then?

 

[shakinghorizons]

box is tuned at 52 and i burped at 57 htz.

//content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[basscort2009 5,000+ posts]

th 8" is 50.24 sq inches so its still a little under but it works. box is 4.5 before displacment. So about 11 inches per cube i would guess

 

[basscort2009 5,000+ posts]

//content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

why?

 

[shakinghorizons]

Its a little high, at least you arent burping ~70hz like some //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif, but regarless! Its nice to finally make it to one fifty for the first time!! //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[basscort2009 5,000+ posts]

yea it is. and im actually glad i did the port wrong cuz i have an easy swap of ports. just undo the spl baffle and screw in the 2 4" aeros for 32 htz daily. lol

 

[shakinghorizons]

Right on, nice to see guys breakin 150 out the trunk!!! Its not easy, lol, i know. . . takes time, hence the FINALLY on the title of the thread. lol

 

[basscort2009 5,000+ posts]

yea i only know personally a couple other ppl doing big numbers out the trunk. RAB for one,. and th other is my buddy doing 156+ out of a cadilac. but he is in pro trunk this year. im only in amatuer trunk thus the one battery and stock alt. rules.

 

[IgnoreMe 5,000+ posts]

i would think you want the flair on the inside of the box so air can easily enter it vs. exit.... never understood how the flare on the outside of the port helps but... hey... milestone for you... nice job.... esp. w/ 1 18 on 2500W.. pretty impressive

flare on either side helps with lessening port velocity.