View Full Version : Build Log for 4Nine: 2x 12's Ported (Dual Kerfed Ports)
02-19-2009, 09:38 AM
Well i started a build for a local around me that a friend was going to take care of and he passed him off to me. Old School guy, wanted a box that would be cosmetically appealing, flat response, able to play all genres of music, from old school rap to rock, and everything in between.
Each 12" Re Se subwoofer is placed in a 2.3 ft^3 (net) chamber tuned to 29hz. The box is a top firing / port back enclosure design for a tahoe. The Dual slot ports are kerfed. Box will have angle bracing as well. Subs will be flush mounted, and the box is going to have legs to let wiring pass under it. for a huge display rack that we will be building when he comes to pick up the box. (for his amps, crossovers, distros, fuse blocks, and battery.
I believe hes running 2 x600.1 PG AMPs, and a 300.4 for his mids. which are PG RSD's.
Anyway. On to the pictures of some progress.
Design (Dimensions Ext: 47.5W x 17H (without legs and Double Baffle) x 18D) Each Port is 2.25 x 15.5"
Setup (Rigid Contractor Saw TS-3660 (with zero cleareance insert, Porter compressor / nailer.)
Cuts Lined Up
Lined Up. so straight. Table Saw > circular saw and sanding
02-19-2009, 09:39 AM
02-19-2009, 09:44 AM
Its has begun
Engineer's square for the exact 90 degrees
While this was drying i was priming the sides of the box, and inside port wall.
While the paint was drying, assembled the backs
Masked the edges off to prepare for priming and painting
02-19-2009, 09:46 AM
that amprack in the 3 pic looks awesomo
02-19-2009, 09:59 AM
Pictures of the kerfed fronts and such are next
02-19-2009, 10:01 AM
Great start :D
02-19-2009, 11:25 AM
Looks awesome, subscribed!
02-20-2009, 07:06 PM
thanks for all the compliments. im not the most efficient with time. but for a self taught 18 yr old who has no experience with tools, or had no tool experience growing up, im happy with where im at.
before i got into audiowork, our familys tools consisted of screw drivers, hammer, pliers, a few wrenches, a few sockets, a drill, flashlight, and select drill bits. lol
it was a joke.
anyhow pictures are being uploaded now.
that amprack in the 3 pic looks awesomo
I WAS CHECKING THAT OUT TO! HAHA!
02-20-2009, 07:31 PM
1 more of the amp rack. (first attempt at vinyl) wierd unflat surfaces so it was hard to get edges right.
Back to the box.
More bracing made for the remainder of the box angles.
Finalized version of number of kerf cuts and spacing needed in 3/4" wood to get desired effect. this is the completed (successful test piece)
The scraps of the not so successful ones
stop, break, friend came over and i built him a quick dual 12" ported enclosure tuned to 33hz with 4.5 Net for both subs.
as well as make some quick 6x9 adapters for a Camry.
02-20-2009, 07:53 PM
Back to the box:
first front panel made and kerfs cut. then braced against the box and see the fit and finish and angle it makes
loosening it up
second front board.
slight run away on 1 of the kerf cuts. led to a 1" diagnol slice. however it didnt go through to the next kerf, nor did it impair the kerf it was a part of. so it will be filled in when bent like the rest.
and the young squire boy, apprentice, who is trying to learn the ways of thumper and bjfisher
02-20-2009, 11:39 PM
how do u plan out the kerf looks interesting
02-21-2009, 02:53 AM
well i used test pieces till i got a successful piece. the spacing was 3/8" and the debth was around an 1/6 of an inch left.
02-21-2009, 02:55 AM
lolol at building another box while on break from anotha box dood
02-25-2009, 12:45 PM
up for some work going to be done today. and new pictures
02-25-2009, 04:31 PM
That about sums it up for me.
Take as long as you need.
02-26-2009, 02:50 AM
a lot of painting today. i never have painted an enclosures port before. so it taking alot of thought for each stage. i realized if i didnt spray paint each section (except for glued edges) that would be seen than id be spraying into a enclosed port which would yield sloppy results. i also realized using spray primer and spray paint takes so much longer than brush on to yield the same results.
watch as the rough edges of the box have overspray, drips etc.. and how sanding for hours got it back to my liking.
All in all. i realize now why bjfisher (fishercustoms) and thumper (pound that sound) charge what they do. O well i guess its for a fellow floridian, and well i dont work so i need the $$
Second Layer after sanding
Left Side Added after 2 more layers to the bottum and back walls of the port. no progression of the sides. took 3 layers not 4.
02-26-2009, 02:55 AM
The Paint and Primer Used
Next up, front boards (not completely painted because some of the front wall will be carpeted (or vinyled)
Straight on leading up to the next update
Pop da Hatch
02-26-2009, 02:58 AM
doesnt look too bad.