So I've decided to do a writeup on the sub I built recently. I live in a dorm, and had a very specific size constraint: I wanted it to fit in the center compartment of the TV Stand I built for myself. Overall dimensions are 27"W x 17.25"H x 21.75"D. Internal volume is 3.8ft^3. Port consists of two 2"x7.5"x28", tuned to 26Hz. Blocking one port would yield a 18.4Hz tune, but given the limited size of the box, it doesn't really model well, so I doubt I'd ever block it. Power comes from a 500W BASH plate. I decided on this driver, because I've used these Polk MMs in a few builds, and I feel they have great performance for the money. Driver was $150. Pretty solid for a 15" with 25mm Xmax. They use Neo magnets as well, so they don't tip the scales.
Sub is used mostly for music, with movies on occasion. I dispensed with internal bracing, mostly out of haste and being too lazy. The cabinet doesn't really vibrate, so I'm not too concerned. I can always add lattice bracing down the line. But back to the haste, I'm pretty sure I only put about 8hrs of build time into it, from MDF sheet to finished product. This is like the 6th or 7th box I've built, so I'm getting pretty quick
.
Come this summer, my plan is to get some poplar veneer on it to match my tv stand, and then stain them both in possibly a cherry color.
Now for all the visual aides:
SPL Plot:
Port Velocity Plot:
Group Delay Plot:
Front View:
There are now little corner blocks to take up the gap between the front panels and the top panel.
Back View:
This photo makes all the sides look kinda curvy
. They're straight as an arrow.
A shot of the TV stand:
I'll try to get one soon with the new sub sitting pretty in the center. You can also see the custom speakers I built. They were from a speaker building class. It was a set design, using PVC pipe, and some unknown drivers bought in bulk for the class, 6.5" + 1". They're very impressive though, the drivers are very similar do Dayton's offerings.
Proposed Finish for the sub:
WinISD File:
High Tune.wpr
) But I'm hoping I can mellow it out quite a bit with the Crown. Being I'm in a dorm, the only thing I can really play with is EQ. I don't really have the option of moving equipment around or applying any acoustic treatment.
