So I got a PSA V1500 about a month ago and thoroughly enjoyed it but decided it just wasn’t enough. After researching a bit I have decided to build what I am calling my couch kicker. I have a giant living room area. Something along the lines of 10,000 cubic feet so I am never going to pressurize it. I know the typical answer around here is ‘oh well you only need 8 18’s to pressurize that much area, what’s the big deal?’ I’m trying to make this a stealth build, as in unless you look for the box you won’t see it. The V1500 did a pretty darn good job of pressurizing the area around it, but it was lacking some serious midbass and tuning ability.
So the plan is this. I have a 72” wide couch. I have currently designed on a sheet of paper in front of me a 70” wide box that will contain 3 sealed subs. One DA UM18-22 in the middle, with two Magnum-12’s from DIY Sound flanking it on either side. I will add a little lip to the front bottom of the box so that it will match the pitch of the couch, so it is firing directly into the back of the couch. All this will be powered by one iNuke 6000DSP. The 18 gets one channel, the two 12’s get the other channel.
Major problem I’m running into at this point is box size. The 18 in a 4.22 cube box seems to be pretty lacking on the low end. Peaks at 50hz, 0 at 38.5Hz, F3 at 27hz, and F10 at 17hz. Am I going to be really missing out on those lower frequencies? I was just never blow away by the low stuff like in Interstellar and I am more thrilled with
's setup where he has 4 sealed 12’s behind your back and it feels like you are getting kicked in the back everytime a gunshot goes off. Also I was severely disappointed in the V1500’s music ability, my little JBL 10” did a better job at hitting those higher notes around 50hz and up.
So I guess these are my first two questions before I start this build.
-Will the 18 sound super weak on the low end?
-And is it dumb to want to put this all in one box? I could have three separate boxes but hate the idea of wires running everywhere. I just imagine one box would be strong and clean looking.
Also I've attached the WinISD model for my current sealed box.
The Full Marty is COMPLETE!
It took 16 days of multiple hours per day of cutting, gluing, sanding, and painting, but it's done. So you don't have to go through the whole thread, here is the full build!
Beginning construction with port rails.
Bracing and padding done
Mashing it all together
Beginning to prime
The giant box done and in place
And in it's final resting place!