Re: Everything you need to know about every sub
Adire Audio 15" Brahma
-Box - 4.5cu' after all displacement tuned to 38Hz, powered by a Cadence A7hc in the trunk of my 2 door Cavalier. This is the best sub I have ever owned. Hits pretty high SPL while maintaining excellent SQ. I built this set up as SPL/SQ (70/30) and it does a 146 on Linear-X. Kinda on the pricey side but what do you want for something that can do both jobs.
Elemental Designs K
-Box - 2.5 cuft, tuned to 33, powered by a JBL 600.1. This is one of the best drivers for the money in my opinion. It's not overwhelming in any one area, but it can do everything you ask of it and more. It gets pretty da*n loud and the SQ is excellent. If you're looking for an SPL beast or a perfect SQ driver, look elsewhere, but if you want something that will do very well in both these areas at a cheap price, you've found it. Plus, they work well in very small boxes. An all-around excellent sub.
Infinity Kappa Perfect 12.1D
- Box - 1 cuft per sub sealed (I had two of them), powered by a JBL 600.1. This was my first "real" setup, where I decided to spend some actual money on car audio. Overall, I was somewhat disappointed with them. SQ wise, they were very good, and took anything I thew at them. However, the SPL was severely lacking. They simply didn't get all that loud. So I borrowed a friends amp (USX 1000d that did 700 @ 2 ohms) to see if it made a difference and the subs blew. I wouldn't recommend them unless you can get them very cheap.
Resonant Engineering 15" XXX
- Box - 4.32 cuft after all displacement, tuned to 29hz. In the trunk of my '89 Olds Cutlass Ciera, powered by a Hifonics BX1500D. Overall, I'm thoroughly impressed with this sub. The first thing that impressed was how lowwwwwwwwwwww it can get, and the ability to not miss a beat. It handled a 10hz-80hz sweep with ease. SPL wise, it's loud. I can't exactly convey how loud it is in words, but my rearview mirror did rattle off. SQ wise, it gets the job done. I'm not going to say it's a flawless SQ driver or anything of the sort, as it's not. It lacks a certain, for lack of a better word, crispness on certain songs. But in the same vein, if I wanted that crispness, I would have bought a different sub. I was looking for an SQL driver (with a healthier dose of SPL ), and this sub delivered everything I wanted.
2006 Jeep Liberty
Adire Audio, Cadence, Clarion, MB Quart
Lv = [(14630000 x R^2) / (Fb^2 x Vb)] - 1.463R
*Vb = vol. in cu"
**R = sq.rt. A / Pi (for square/slot port)