I will post this in the subwoofer forum, but just so you know how the EMPtek10i10i stands up to a couple well regarded subs in its price range (3-500 dollars)
Subwoofer tested: Outlaw LFM-1 (12 inch, 350 watt, down firing and down ports)), SVS PB1000 (10 inch, 300 watt, front firing and front ported) , EMPtek10i10 (dual 10 inch, 250 watt, front firing and sealed), KlipschR12wD (12 inch, 340 watt, down firing, front port)
A few up front disclaimers…everything in this review is subjective and represents my opinion only. I did no measurements. I listen to music and watch movies with dynamic soundtrack. I did audition all 4 subwoofers at the same time and placed the sub in the location that I crawled for the EMP sub (three of the subs I own, the SVS was on loan from a friend). Since it was just me doing this, there was nothing blind about the study.
HT: Outlaw > SVS=EMP>> Klipsch
Music: Outlaw=EMP > SVS > > Klipsch
Output: Outlaw>SVS> EMP = Klipsch
Low extension: Outlaw+SVS >Klipsch > EMP
Looks EMP > Outlaw >SVS > Klipsch
Cost (what I paid for them):
HT experience: watched scenes from Oblivion and Godzilla, 2014, which both will test a subwoofer's ability to hit low. The Outlaw, EMP and SVS sub all performed well for these scenes with the exception of two scenes in Oblivion which cause the EMP10i10i to distort. On all other scenes, these three subs were spot on, very dynamic and accurate. While the Klipsch can hit pretty low, it was less accurate, or boomy and it also distorted a couple times during Oblivion!
Advantage to the Outlaw LFM-1 by a slight margin over both the SVS and EMP, which isn't a shocker since those are both 10 inch subs, in terms of hitting low and output. Perhaps a suprise, the EMP sub held up really well and I felt was the equal to the SVS in many respects for HT! The Klipsch isn't in the same league.
Music experience: First, I don't listen to real bass heavy music...classic rock, classical. Don't ask a huge amount of the sub for music except accuracy. Used a couple tracks to compare...Tommy Bolin's Post Toastees, Pink Floyd's High hopes, Dire Straits Money for nothing and parts of Mozart's 40th Symphony.
Really love my EMPtek for music, as it is accurate and tight. The Outlaw sub was its equal, very faithful to the music. While listening to the music on the Outlaw sub, the music seem more bass heavy, but never boomy. I was able to adjust the gain to get a really beautiful coloration of the music with the Outlaw. While the SVS PB1000 is also a very accurate and tight sub, I was unable to adjust the gain to get the bass "just right" for my ears...it would go from bass heavy to not enough and I just couldn't find a good balance. Since this sub is front ported, I am assume I was getting a null (I had all three subs in the same location for the test). I am sure with proper placement, I could have made this sub sound better. Again, the Klipsch sub, not a bad sub, just has a boomy component to that which goes away if you turn down the gain to below 0 db, but then you lose the umph and coloration.
For music, I give the honors to the EMP and Outlaw, with the SVS a close 3rd and the Klipsch again, not in the same league.
Set up #1: EMP e5ti, e5Ci, and EMP e5Bi surrounds, Outlaw LFM1 Plus sub, EMP 10i10i sub
Set up #2: Def Tech SM450, CLR2002, SLS Qline surrounds and Klipsch 12wD sub