Home build 412 cab..

[lekteri]

..got new paint today.

http://liquorworks.wippiespace.com/images/liquorworks/412 new paint.JPG

I have heard that black painted cabs sound better uke:

 

[Metaltastic]

Wow, this pic is gigantic, it's loading like I'm back on a 56k modem Looks great though man, but didn't you have some sort of finish on the natural wood before you painted it? Did you have to strip it off? Or was it just stained?

 

[lekteri]

Yes i strip it before paint.
Here's how it was before:
http://liquorworks.wippiespace.com/images/image/liquorworks/Diy412 (10).jpg
I had to sand it a bit.

 

[Damian B]

Giant pic is giant. Looks cool though!

 

[Metaltastic]

Giant pic is giant.

6.55 MB, FTR

 

[Genius Gone Insane]

Wow, gorgeous!!! Did you base it on Engl dimensions?

 

[JMarz]

that thing is FUCKING HOT man

 

[ElektricEyez]

I built my own cabinet as well. Your's looks really nice man! I'm curious however, what made you put the foam on the back panel? Also, a little trick to do is to put a brace, like lets say a 2x2 from the baffle to the rear panel. This helps the baffle board resonate in tandem with the speakers for more and better tone.

 

[lolzgreg]

Talking about home built cabs. Someone needs to make a 4x12 with different compartments for each speaker that have no parallel walls or 90 degree angles. I wonder how that would sound...

 

[KillFrenzy]

Does anyone have some kind of cab schematic? Mesa, Engl, Framus, Marshall?

 

[ElektricEyez]

Talking about home built cabs. Someone needs to make a 4x12 with different compartments for each speaker that have no parallel walls or 90 degree angles. I wonder how that would sound...

I could be wrong but I don't think that would make a noticeable difference because the purpose of a sealed enclosure is to act as acoustic suspension that provides back pressure for the speaker which probably will not change the sound of the external part of the speaker which is what you hear.

 

[reneisgod]

Talking about home built cabs. Someone needs to make a 4x12 with different compartments for each speaker that have no parallel walls or 90 degree angles. I wonder how that would sound...

Ive always wondered about that too.

 

[ElektricEyez]

Does anyone have some kind of cab schematic? Mesa, Engl, Framus, Marshall?

Technically, all you really need is the external measurements (H W L) or better yet the internal measurements of the cabinet that your trying to build. Then you can build your cabinet based on those measurements. If your going off the external measurements, then all you have to keep in mind is that your most likely going to be using 3/4 plywood (preferably birch). It's not really all that difficult. But, if you know what speakers your going to be using, the best thing to do is get the manufacture recommended specs for an internal enclosure and build the cabinet according to those specs.

Most manufactures give their speaker specs in Cubic Ft. The formula to achieve cubic feet is to multiply (in inches) D* W * H/1728= cubic Ft. So for example let's say a recommended speaker enclosure is 1 cubic foot of internal volume. You *could* make that speaker 12 * 12 * 12 and get 1 cubic foot of internal volume. But let's say you want to make a full on 4 x 12 cabinet with those specs. Obviously you don't want to go hauling around a large cube to shows so you would have to alter your measurements to make it work, plus you'll have to make up for 4 different speakers which would be 4 cubic ft of internal volume. In this hypothetical case, you could make a cabinet that has the INTERNAL dimensions of 8D * 30H * 29W which would give you 4.02 cu Ft, which would be well within limits.

Also you can consider these couple of things. The larger you make internal closure, the more bass heavy, boomy, flubby, your cabinet will sound, and you also lower the SPL of the cabinet. The smaller you make the cabinet, the tighter the bottom end will sound, and it will be able to handle more wattage. This only applies to sealed enclosures. Ported enclosures are a whole different animal. Various wood types will have a great effect on your tone as well.

 

[CatharsisStudios]

make sure there is a fricken HUGE sound post in it

 

[lekteri]

Another huge pic.
http://liquorworks.wippiespace.com/images/image/liquorworks/IMG_1961.JPG

 

[ElektricEyez]

Very nice man, good job! Are you going to put a grill cloth on it?

 

[lekteri]

Cab sounded like shit compared to my engl standard(4xV30). Boxy sounding piece of shit.
Diy cab has two greenbacks, one V30 and one V60.

Phase issues?
More foam?
Replacing V60 to V30?

 

[lekteri]

Plywood thickness is 12mm. Too thin?

 

[KillFrenzy]

ElektricEyez, thanks a lot for the info. Althoug I always wondered if speaker manufacturers provided that kind of information, I never really went for it. Maybe it's time to build a cab.

 

[Soundlurker]

I can't see any of the photos ;/

Plywood thickness is 12mm. Too thin?

I'd say so, yes.