18" brahma

[RabidE 10+ year member]

I have a xbl2 Brahma style 15, Im seriously considering reconing to an 18". I know this was a super sub a few years ago, but compared to some of the newer 18s like the fi bl18 how close would it be in spl?

Click to read more...

 

[RabidE 10+ year member]

also, if anyone knows someone whos had a 15 brahma reconed to an 18" how were the results. Ive searched google, and many other forums and i can come up with is people considering it. No results.

 

[Deadbeat 10+ year member]

in SPL i dont think it would be as loud. The Brahma was an amazing sub, but it was more SQ orientated but it did get decently loud.

 

[LowFreq]

There is a video of brahma's in an spl setup where they actually break a door. Cracked right through the metal.

 

[ABSOLUTEAUDIO 10+ year member]

It was called the bullpen, 4 15" brahma Extreme's 170+db on TL

 

[ABSOLUTEAUDIO 10+ year member]

sold 2 of my brahma 12's on here. Still have 1 that ups broke, will get it fixed by fi some time.

 

[audioholic 5,000+ posts]

If you want a 'Brahma Extreme', just buy an 03-05 XXX... virtually identical subs. Not a very well known fact. And I find that amusing, because so many people like to talk about the Brahma Extreme like it was God's gift to SPL a couple years ago, while those same people state the XXX makes for a lousy SPL sub and would always recommend the SX over the XXX for a daily SPL setup.

 

[Deadbeat 10+ year member]

There is a video of brahma's in an spl setup where they actually break a door. Cracked right through the metal.

yea, that was Scottie Johnson's Astro van. . i think theres a big difference in what Scottie did and what this guy is trying to do.

not that im a pro at building speakers or anything . . . but reconing it to an 18 will just raise the Fs and i dont see the the sub getting as loud

 

[MikeyB 5,000+ posts]

If you want a 'Brahma Extreme', just buy an 03-05 XXX... virtually identical subs. Not a very well known fact. And I find that amusing, because so many people like to talk about the Brahma Extreme like it was God's gift to SPL a couple years ago, while those same people state the XXX makes for a lousy SPL sub and would always recommend the SX over the XXX for a daily SPL setup.

//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

 

[RabidE 10+ year member]

yea, that was Scottie Johnson's Astro van. . i think theres a big difference in what Scottie did and what this guy is trying to do.
not that im a pro at building speakers or anything . . . but reconing it to an 18 will just raise the Fs and i dont see the the sub getting as loud

I just want the good cean sound of the brahma, with more output, I know i could go with 2 15s, but really ive always wanted an 18" and im a fan of a single sub setup. especially down low. Are you saying it wouldnt get much louder than what it is now as a 15? I mean i want decent spl, but yet dosnt sound like a cat getting ***** by a pitbull in a garbage can.

lol, my favorite sub setup i think i have ever had was an Adire Tempest, I had it in a 4.5cf ported box tuned to 32hz in a ford explorer. The looks on peoples faces when they saw only one "crappy looking speaker" put out that much bass. Chrome and shiny plastic dosnt make a sub.

 

[Deadbeat 10+ year member]

I just want the good cean sound of the brahma, with more output, I know i could go with 2 15s, but really ive always wanted an 18" and im a fan of a single sub setup. especially down low. Are you saying it wouldnt get much louder than what it is now as a 15? I mean i want decent spl, but yet dosnt sound like a cat getting ***** by a pitbull in a garbage can.
lol, my favorite sub setup i think i have ever had was an Adire Tempest, I had it in a 4.5cf ported box tuned to 32hz in a ford explorer. The looks on peoples faces when they saw only one "crappy looking speaker" put out that much bass. Chrome and shiny plastic dosnt make a sub.

Someone might be able to elaborate this better then me. . . But turning it into an 18 will raise the Fs and the Mms because now you have heavier movable parts. It basically rearranges all the parameters that the motor was designed to move. I dont think SQ will go down, i think output will go down because of this.

And yea, I run a single 18 as well and i absolutely love it.

 

[RabidE 10+ year member]

i dunno, Wish i had some results to look at, but its rare

 

[Rashaddd 5,000+ posts]

How does an increase in Mms = an increase in Fs?

You don't think a heavier cone resonates slower than a lighter cone...?

 

[RabidE 10+ year member]

anymore input on this subject?

 

[terra 5,000+ posts]

I think the 18" would have the lower Fs bud