Originally Posted by Martycool007
So you are running two duel opposed cabinets with duel SSD-15's in each? How do you like those? Will they really go down to 5hz? I wonder how the SSD-15's stack up against the Dayton UM15's? I have two single UM-15's that I am in the process of building the enclosures for. I thought about going with the SSD-15's instead but was steared away from them by several friends that advised me to get the UM-15's. The SSD-15's are substantionally more than the Dayton's, so I guess its not really apples to apples. LoL
Yes, I am running two 3ft3 dual opposed cabs each with 2 SSD-15s in them. So far I freaking love them and, yes, they really do 5hz and below. Unsure how they stack up to the Dayton, but the SSD are in tiny cabs.http://www.avsforum.com/t/1428124/ssd-15-dual-opposed-vertical-sub-build
I only stopped the measurements at 5hz when I first got them dialed in. I need to redo that measurement as soon as the granite tops are finished (soon).
Originally Posted by 04rex
With all this talk on box size, would the 3 cu ft box from DIY sound group be a good box for 1 ultimax 15? As mentioned, I would start with 2 and possible go to 4 in the future. I would get the ep4000 amp just to be ready.
And about the ep4000 amp, Mark mentioned and I have read that they are noisy. How noisy are they really? I also read about a fan upgrade to make it silent?
Everyone's help is much appreciated.
The EP4000 is really noisy. You will absolutely need to do a fan mod. You will also need some way to EQ. Sealed subs tend to roll off gradually, but often the roll off starts around 50-60hz. To get good response, you will almost definitely need to EQ.
I also think you should seriously consider the dual opposed option using sonotube. But, if that's not your aesthetic, so be it.
Originally Posted by Kimeran
If you cant build a box, A sonotube sub is much easier to build.
Bossobass' subs are all based on sonotubes and are dual opposed sealed enclosures...
Should make your building a little bit easier
They are easier to build, although bossobass uses a stronger material and custom extrusions for his subs, not sonotube material. I would have gone this route had I been able to source that material locally. There are just a TON of benefits to a cylindrical enclosure. Plus, I think that shape gives you a ton of options to make it look very aesthetically pleasing compared to a typical black box.
Originally Posted by Mrkazador
3cu ft is a little small for that driver but it will work. The Ep4000 is noisy, definitely distracting during quiet scenes in a movie. You can swap the fan for a much quieter one but a quieter fan also pushes less air.
Yes, quieter usually equates to lower CFMs, but not always. Also, program material is 1/6th or 1/8th duty, and even at max output, the amp is unlikely to get hot with even slightly reduced airflow from the quiet fan option(s). I consider this mod to be a definite requirement for almost every EP4000 owner.