Originally Posted by Smittyfit
Yes my subwoofer XmaX is probably around 11mm, and mine moves maybe a bit more than yours when I push it. For your reference I use a SVS PB1000. Your subwoofer is MUCH more capable.
I must be going hard of hearing because I do not mind the PS3 that loud.... But everyone loud varies.
I just order the Inuke3000 DSP and 2 SI 18" D4 subwoofers, I will be making a 2x2x4 cab for them tuned to 17hz. Hopefully I do not run into any problems, and most of all I hope I am not underwhelmed which I am getting the impression you are.
I was going to wait for the Ultimax 18, but for $162 for the SI... I couldn't resist. Also I have heard the ultimax requires massive amounts of power... Maybe you need a stronger amp to get that sub bouncing?
I definitely don't want to give the impression that I'm underwhelmed. Not the case at all! I was concerned that my Inuke 1000 would be clipping too much with this driver so I actually did order a 3000DSP to power it, which gives me the option to add a second sub if I want to. But, in that case I would be driving each sub with about the same power as the 1000dsp. So, in order to preserve headroom, I may just get another 3000 to power my next build as well.
The reason I wanted more power (and also why it sounded like I wasn't fully satisfied) is because of two big problems. One, my room is on a concrete slab, AND it also opens up into the rest of the house. This means that not much infrasonic bass is transferred through the ground to my listening position, which is a large part of why sub 20hz bass is so great. And it's nearly impossible to pressurize my space because it's so large (about 18,000cf). I would probably need between 8 and 10 18" subs to do that. Maybe more!
In order to take care of the concrete problem, I placed the sub right next to my couch and it shakes pretty violently. I believe this is the only way to get great tactile feel with a room like this.
I think you'll be more than happy with your SI's with those large boxes. Also, I would be very interested in seeing how the UM 18" compares to the 15". They're great drivers, but you're right, at $160 you can't beat those SI's.