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Custom DIY 2x15 cab build

#621
Count Bassie said:
They resist warpage fairly well?
Click to expand...

Well, having mentioned the expectation of reduced warpage, I purchased some baltic birch last autumn, and then didn't get to the project right away... I bought two 5x5 panels and cut them in half for transport... All 4 are warped from sitting in the garage! :o

I will attempt the builds I have planned anyway and see what happens... Maybe when the panels are cut to size, I can "iron" them for a while before the glue-n-screw phase... Fingers crossed!
 
#622
#625
I cancelled the order. It's a great deal. Almost too good to pass up. But I've got a LOT of projects that aren't getting done, a really nice 2x12 that never gets used because I don't play bass at loud gigs (I'm also a drummer) and the money could find better uses.

I'm really bummed about doing it because those are some great speakers. But I've got a lot of speakers sitting in cardboard boxes and I don't need more, especially when they don't have an outlet when I finish the project.

KO
 
#626
Aww that's disappointing. I know what you mean. I'm in the same boat. In addition to the cabs I already built (2 - 2512II 1x12's, a 2510II 2x10, a nEarful 15/6 soon to be modified to be a true fEarful), I have 2 more 2510II's, 2 2512II's, a K140, an EVM15L that I reconed, and now the two 15PR400's sitting in boxes on shelves.

Do I need all these? Absolutely not. Do I want them, yeah. It's a sickness. I'm looking to find a DIY-aholic 12 step program somewhere. :crying:
 
#628
LOL! I hear ya. Trouble is DIY has been ingrained in me since I was like 7 which fueled my desire to go into engineering. And that was way before the internet (think practically pony express delivering Pop' tronics magazines), so that just makes it worse. Small electronic projects are one thing, but speaker cabs take up lots of room.
 
#629
gerryjazzman said:
LOL! I hear ya. Trouble is DIY has been ingrained in me since I was like 7 which fueled my desire to go into engineering. And that was way before the internet (think practically pony express delivering Pop' tronics magazines), so that just makes it worse. Small electronic projects are one thing, but speaker cabs take up lots of room.
Click to expand...

Yep...

I was more of a building things with wood, tearing apart small engines kid.

I started playing bass at age 15 in 1974 and then the whole subject of musical instrument electronics invaded my world. Seems to me there was an article in Popular Electronics for a project called the "Sound Intensifier" or something like that. That led to Fuzz Boxes, Craig Anderton projects and the like.

Converted an old console Hi-Fi amp (tubes of course) into my first bass amp. The AlNiCo woofers were installed in a box that resembled a 2x12 cabinet.

Then in about 1975, I built a 4x10 with BIC Venturi woofers. If I had the presence of mind to port the thing and add a tweeter, I might have been on to something!

Then it was an EV designed TB series 2x15 cabinet (designed in 1969, it predated the TL series of the early/mid '70s) loaded with SROs (powered by a Marshall Major head). I miss that rig the most!!!

I didn't own my first commercially made speaker cabinet until about 1998 (although I didn't play bass much from 1982 (when I earned my EE degree and got married) until 1996).

Etc...
 
#638
solarplexus said:
Cool. What is the best internal cubic feet for the Kappalite 3015? If I halve the dimensions, I'd get 4.3.
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There is no "best". When you increase the size you give the cab more low frequency handling at the expense of potential power handling - the speaker moves to its limits more because the "air spring" in the cabinet isn't as stiff. It's a question of how loud you want the cab to be vs. how low.

KO

Added: SuperJesus' link to the Eminence cab designs for the 3015 will give you some idea of what their designers (usually Jerry McNutt) think are decent for a given application. It's fun to download WinISD and find a model for the speaker (or make your own) and come up with your own best. The Eminence designs usually give you a pretty good starting place, though. There are typically three or more designs for each speaker in their PDFs.
 

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