Home build 412 cab..

[Forceps]

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?

Can you open up the Engl cab? Maybe you can look inside to see what the differences are in constructional way.

 

[ElektricEyez]

The foam is actually making your speakers think that they are in a bigger enclosure than what they really are, maybe try taking it out. Also, what wood did you use?

 

[SentencedToBurn]

you should of left it how it was before the paint job. that looks bad ass!

 

[ElektricEyez]

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.

Ahh your right. I just checked out Celestion's website and they do not provide that information. I used to build custom subwoofer enclosures and the subwoofer manufactures always provided that information. There are speaker calculators out there that let you put in all the specs for the specs for the speaker but I can't seem to find any at the moment. I built a custom cabinet and it sounds great, and I used similar dimensions to an oversized mesa cabinet, but my cabinet is bigger for deeper bass.

 

[ElektricEyez]

Plywood thickness is 12mm. Too thin?

that is a little on the thin side which is almost half an inch thick. What happens is the wood is not rigid enough and resonates weird frequencies. But I'm willing to guess your problem may be in your wiring?

What ohms are those speakers? How did you wire them?

 

[ElektricEyez]

Sorry for highjacking this thread but I just read that I was wrong about enclosure size when it comes to speakers. At least according to Dr Decibel on Celestion's website, internal volume makes no difference . Here's a link.

http://professional.celestion.com/guitar/features/drdecibel/index.asp

 

[TheWinterSnow]

Plywood thickness is 12mm. Too thin?

Cabinets work the same way as drum shells, the thinner the material, the greater the resonance, too thick of a material and you get a dead sound. Usually most cabinets are around 3/4 to 1 inch thick (19-25mm thick) so I would say yes it is too thin

 

[Fox Mulder]

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.

Yes, it's gonna have a very subtle effect. A little less mids perhaps.

 

[Toni S.]

It certainly looks hot