Two 12" Brahmas VS. One 15" Brahma VS. One 10" Hutchinson NDFEB
I decided to do some comparisons to help me decide what my favorite type of sub/box is - my existing Hutchinson 10" in a small-ish ported box (about 1.3 cu.ft), vs two 12" Brahmas in a small-ish sealed box (about 2.3 cu.ft), vs one 15" Brahma in a large sealed box (about 3.4 cu.ft).
They will get 2,000 rms @ 2ohm from an Mmats 2000.2, and will be tuned individually with Dirac.
Below is the box being built for the two 12"s, and next I'll build the box for the 15". As always, 3/4" BB plywood and NO drywall screws!
The Jeep's tailgate has an angled protrusion on the driver's side, so I chose to put 45s in both side to give it symmetry:
https://i.postimg.cc/VNXz6ynF/IMG-20...-111802301.jpg
https://i.postimg.cc/gcgmrHX1/IMG-20...-135910760.jpg
I know, I know, I didn't miter the joints properly! Lol
This box doesn't need bracing as the individual panel runs aren't very long, but I decided to have some fun with scrap plywood. ;)
https://i.postimg.cc/J0z8PGgT/IMG-20...-135929781.jpg
https://i.postimg.cc/gJDdVvMX/IMG-20...-135941563.jpg
https://i.postimg.cc/pTxR50BM/IMG-20...-135948255.jpg
That's where I'm at for now...
Re: Two 12" Brahmas VS. One 15" Brahma VS. One 10" Hutchinson NDFEB
Cool!
My prediction:
#1) The 15" in largish sealed.
#2) The Hutchison.
#3) The two 12" in smallish sealed.
...because, reasons. :p
Re: Two 12" Brahmas VS. One 15" Brahma VS. One 10" Hutchinson NDFEB
Quote:
Originally Posted by
Grinder
Cool!
My prediction:
#1) The 15" in largish sealed.
#2) The Hutchison.
#3) The two 12" in smallish sealed.
...because, reasons. :p
Alright, I like predictions! I do have a feeling that I prefer the sound of sealed over ported...
Re: Two 12" Brahmas VS. One 15" Brahma VS. One 10" Hutchinson NDFEB
I'm going with the 2 12s....can't beat the cone area advantage.
Re: Two 12" Brahmas VS. One 15" Brahma VS. One 10" Hutchinson NDFEB
Quote:
Originally Posted by
BenevolentDictator
I'm going with the 2 12s....can't beat the cone area advantage.
You DO have a point... According to this chart, the two 12"s have almost 3x the cone area of the one 10". The single 15" has 2.25x the area of the 10", but the two 12"s still have 22% more cone area than the single 15".
I realize this is just a rough estimate:
https://lh3.googleusercontent.com/pr...mYtMcLRS9XL1bQ
Re: Two 12" Brahmas VS. One 15" Brahma VS. One 10" Hutchinson NDFEB
Re: Two 12" Brahmas VS. One 15" Brahma VS. One 10" Hutchinson NDFEB
Re: Two 12" Brahmas VS. One 15" Brahma VS. One 10" Hutchinson NDFEB
Quote:
Originally Posted by
Grinder
Cool!
My prediction:
#1) The 15" in largish sealed.
#2) The Hutchison.
#3) The two 12" in smallish sealed.
...because, reasons. :p
I’m going to agree with this. But I’m a bit biased... I’ve had all 3 of those boxes (different drivers of course) and currently have a single 15 IB (which essentially a big sealed box, right?) and FOR ME it’s the best sounding sub I’ve ever had. I’m curious how this ends up.
Re: Two 12" Brahmas VS. One 15" Brahma VS. One 10" Hutchinson NDFEB
Quote:
Originally Posted by
TheTodd
I’m going to agree with this. But I’m a bit biased... I’ve had all 3 of those boxes (different drivers of course) and currently have a single 15 IB (which essentially a big sealed box, right?) and FOR ME it’s the best sounding sub I’ve ever had. I’m curious how this ends up.
I'm a bit biased too, enjoying a pair of Dayton HF 15s in 3 cubes ea. at home. However, much as I like them in this configuration, I wish I had the space to try them vented in ~9 cubes ea., tuned at ~18Hz.
Re: Two 12" Brahmas VS. One 15" Brahma VS. One 10" Hutchinson NDFEB
On the 15" I will be giving it twice it's rated power, or probably more than twice as I'm quite certain that this Mmats amp is underrated... We will see if it can handle it! ;) Obviously, the two 12"s are perfectly matched to the available power.
My prediction is that I will like the two 12"s, but I have never even heard a 15" so maybe I'm wrong! :)
