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Custom 8x15 bass cabinet


bootsy666
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[quote name='Beer of the Bass' timestamp='1429030342' post='2747218']
Have you used a modelling program like WinISD to figure out the size and shape of the ports in the front? That should be your first port of call when trying to work the area and length of ports to use - they're not just vents to reduce heat.
I wonder how much heat the drivers will actually produce - If that's a VBA400 in the picture, each driver would only be handling 50 watts at full output, so perhaps heat won't be such a big issue.
[/quote]
The vba 400 is the amp I will be using with it. I've installed stereo inputs aswell as a mono input, so I have the option of running it with 2 amps if needed.

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With One VBA 400 and Barefaced Dubster (2 x 15) I could (can) make the concrete slab and walls of the hall (900 + capacity) I rehearse in vibrate. A most odd sensation feeling the concrete foundation raft move - the earth did move for me :D Not sure what that says about 1950's construction. What the 8x15 and 2 VBAs used in full tilt will do will be interesting to say the least. I await the BBC news later this year!

[url="http://www.linearteam.dk/?pageid=winisd"]http://www.lineartea.../?pageid=winisd[/url] - input the Thiele-Small parameters (from Celstion website) and cab dimensions.. Application will tell you what port sizes, airflows, frequency response the cabinet will theoretically give.

Edited by 3below
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Subscribed to this...... a thing of beauty and magnitude, although I have some question marks on if it will also sound as good. WINISD required and some "specialist" opinion I would suggest.

Edited by HazBeen
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It might be a good idea to post about this in the Amps & Cabs section. There are several posters there who are often helpful on the subject of cab design, and I'm not sure if they read the other bits of Basschat. Although I would hazard a guess that one or two of them will be a bit bemused by the whole idea, you might get some useful input along the way!

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[quote name='Beer of the Bass' timestamp='1429093258' post='2747838']
There are several posters there who are often helpful on the subject of cab design.
[/quote]

Surely you meant to say: "[color=#ff0000][i][b]There is more potential there for a complete bloodbath than on any other single topic (except perhaps compression), and things have been a bit slow recently.[/b][/i][/color]"?

:lol:

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[quote name='Happy Jack' timestamp='1429094595' post='2747860']
Surely you meant to say: "[color=#ff0000][i][b]There is more potential there for a complete bloodbath than on any other single topic (except perhaps compression), and things have been a bit slow recently.[/b][/i][/color]"?

:lol:
[/quote]

Compression is nothing compared to the widespread derision caused by the mere mention of a music stand....

Edited by CamdenRob
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[quote name='Happy Jack' timestamp='1429094595' post='2747860']
Surely you meant to say: "[color=#ff0000][i][b]There is more potential there for a complete bloodbath than on any other single topic (except perhaps compression), and things have been a bit slow recently.[/b][/i][/color]"?

:lol:
[/quote]
[quote name='CamdenRob' timestamp='1429095184' post='2747867']
Compression is nothing compared to the widespread derision caused by the mere mention of a music stand....
[/quote]

So why [i]did [/i]you sell your Rickenbacker?

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that's a beast, 40kg of drivers alone! I'd make sure that the stage can take it before you haul it down there, with the added weight of a VBA400 (or 2!) and then the vibrations, this could end up through the floor! how much does the empty cab weigh?

Matt

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[quote name='Matt P' timestamp='1429097446' post='2747901']
that's a beast, 40kg of drivers alone! I'd make sure that the stage can take it before you haul it down there, with the added weight of a VBA400 (or 2!) and then the vibrations, this could end up through the floor! how much does the empty cab weigh?

Matt
[/quote]
It feels quite light without the speakers, my basson cab weighs more.
The drivers are light so it should be too bad, plus my entire band will be helping to shift the thing about.

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[quote name='MacDaddy' timestamp='1429095119' post='2747864']
bootsy666 can you post a pic with your bass against the cab, to provide some perspective?

Ta.
[/quote]
I'll repost this in amps and cabs middle of next week when I have the speakers in and some more venting.
I'll lean my guitar against it and maybe even I video?

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