First, many thanks to LTD02 for all his help and for coming up with a number of designs that are currently being built by some members here.
As such, I have decided to build one of LTD’s designs which is essentially a variation of the Martysub. I believe LTD had first made this design for member 316, but I think he needed a different form factor. Here is what LTD had to say about this design:“super simple front firing cannon subwoofer build.
24" wide x 30" tall x 36" deep.
no consideration was made with respect to being cut sheet friendly. :-) if the panels are 1/2" smaller here or there it doesn't matter.
slot loaded cab. 2.5" tall slot x 21" wide x effective 36" long. with 20% winisd adjustment for slot port that gives a total effective length of around 44" and tuning frequency of around 16hz maybe a hair lower with the port proximity to the rear wall of the enclosure.
cabinet is about 11.2 cubic feet net or so depending on extent of bracing.
all in all, this is essentially a marty sub, but with a different form factor. a little more raw.
front mounted driver. no recess. double baffle.
driver cutout will be whatever the spec is for the driver used.
16.7" diameter for the stereo integrity 18
16.69" diameter for the dayton rss460ho
driver excursion goes to xmax with 1100 watts. good.
port velocity is low even at 1100 watts. good.”
More information is available at this link:
Here are some of LTD's diagrams on this design:
Here is my cut list:
TOP PANEL 24 X 36
BOTTOM PANEL 24 X 36
RIGHT SIDE PANEL 28.5 X 36
LEFT SIDE PANEL 28.5 X 36
FRONT PANELS 22.5 X 25.25 (DOUBLE BAFFLE)
BACK PANEL 22.5 X 28.5
SLOT BRACES 2.5 X 35.25 (2 SLOT BOARDS TO CREATE VENTS)
SLOT BOARDS 22.5 X 31.75
CAB REQUIREMENT APPROXIMATELY 1.5 SHEETS OF 4 X 8 .75 MDF
I will be using the SI 18 D4 Driver, powered by a Behringer iNuke 6000 DSP.
Altogether, I needed to purchase two 4 x 8 x .75 sheets MDF but only used about 1.5 sheets. The leftovers were used to make 1 x 3 strips for internal bracing. Home Depot did a great job making all the cuts to precision and I took the front panels to a carpenter who routed the cut-outs on the front baffles.
Thanks in advance for all the help I know I am going to need.