Forums - wo or db in convertible?

GRIMM Ex Member	wo or db in convertible? 10/23/05 at 00:53:32 hi was wondering wich do you all think would work out better, 12" wo or 12" db for a convertible, the wo is practically the entire trunk, could this be a factor in performance?, any help is appreciated, also am i correct in the only difference in the wo in the hieght of the enclosure?
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gexter Ex Member	Re: wo or db in convertible? Reply #1 - 10/23/05 at 01:15:25 The WO is for a 8 or an 10. the average solution to a 12" has been add 2 " to the height. I would gamble on the WO just because I like it better. It has also been known to do well in SPL contests. However I cannot give you an answer on which will be better than the other. Just what would be my choice.
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GRIMM Ex Member	Re: wo or db in convertible? Reply #2 - 10/23/05 at 05:59:38 thanks gex, i plan on building this soon, is it really difficult to build, it is my first build but i will have a little help, any suggestions?
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gexter

Ex Member

Re: wo or db in convertible?
Reply #3 - 10/23/05 at 06:26:22

I like the WO personally and find it simpler than the DB and more forgiving. I have built HWK's DB's , wierd concepts of the Imperial and Imp SO.
I find the HWK the easiest and the WO a close second. Its just the way I plan stuff.
I use glue and a air nailer.
A table saw is your friend, if you use a circular saw make a fence to run the saw along.
my next build is the WO32 10" and if I did not buy those plans I would have built a 12" WO
My application is a home in this case.

My biggest mistakes were my lack of attention to detail. Now I am cleaning up and putting more time and detail in future builds.

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GRIMM

Ex Member

Re: wo or db in convertible?
Reply #4 - 10/23/05 at 08:49:34

Hi Gexter, if the subs I am using require a vas of 2.0 do you know how much bracing I would have to ado, and by when steve says to "ado" bracing does this mean another layer to the baffle, or what? Also, I have read here that in order for the WO to accomodate 12" the baffle will have to be angled back? And will doing this change anything? And if so, what? Oh and does the sealed chamber need any polyfillor anything?, Sorry if the questions bore you I am a complete beginner here, any help you can give me is really appreciated, oh, one last thing, when you change the 36" does the 24" change as well? Like 34 x 22? or does the 24" stay constant? Thanks again, you help is appreciated.

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DirtDawg

Ex Member

Re: wo or db in convertible?
Reply #5 - 10/23/05 at 09:53:36

The original plans call for the 36" width dimension to remain the same while altering the depth and height to fit tight places or to accomodate different drivers. That seems easy enough, but many people have built the WO so many different ways and gotten good results that I think you just have to try it and see.

Right now, I'm building one for my bedroom movie system. My wife doesn't want to see, yet another subwoofer in our house at all, let alone in the bedroom. The 8" HWK worked very well, but has been evicted because it took up too much space, (I mean get real, here 8" HWK, too big? razzberry!) So, I'm building a WO type cabinet using 8 - 4" drivers that will hide under the bed. (I'M evicting HER box of shoes!) It will be 5.75"H x 3'D x 4'W and preliminary modeling in WinISD shows a good bump at 80HZ which is where most of the LFE happens in movies so I should be happy with that. Cheesy

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« Last Edit: 10/23/05 at 09:57:15 by DirtDawg »

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gexter

Ex Member

Re: wo or db in convertible?
Reply #6 - 10/23/05 at 15:11:34

Like DD said there has been many variations with success.
If you using 3/4 MDF and the plans, bracing is not used that often.
Unless of course your running some heavy power.
if you are using a 10 or a 12 I would stay with the full dimensions if possible. and its simple to add 2" because of the bigger driver. In your application I would not go any less if possible.
I had a short conversation with Steve, he told me that the 36x36 should have better results over the 24x36. But there can be many variables involved.
I believe the WO to be the best all around design in size and performance for house and car that decware has. The best part is its FREE!!
to be clear the depth is from the front of the horn to the back where the ( V ) is. Or thats how I remember it. and thats the 24 or 36 variation.
for future referance, if DD outright goes against what I say and the science to back it Go with him. He has more builds and years under his belt. I just have better ideas and I am much more creative. ::) not to mention a much better sense of humour. ;D
Do yoiu feel a draft in here? kinda windy?

Gex

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« Last Edit: 10/23/05 at 15:29:29 by gexter »

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DirtDawg Ex Member	Re: wo or db in convertible? Reply #7 - 10/23/05 at 16:14:23 [quote author=gexter link=1130028812/0#6 date=1130076694]Do yoiu feel a draft in here? kinda windy? Gex [/quote] It's a convertible, Dummy!
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gexter Ex Member	Re: wo or db in convertible? Reply #8 - 10/23/05 at 16:41:51 ROTFL shedding tears Gex
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GRIMM Ex Member	Re: wo or db in convertible? Reply #9 - 10/23/05 at 18:29:14 thanks alot guys, i have another question, does the wo have a top? all the pictures show all the inside, is this just for the sake of showibg the inner workings? and if it does have a top is it cut at all or is it an exact copy of the bottom?
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GRIMM Ex Member	Re: wo or db in convertible? Reply #10 - 10/23/05 at 18:49:15 hey guys, how would these subs be wired 2,4 or 8 ohm, i am using a 1200 watt 2 channel amp, any suggestions? i would not know the difference since this would be my first build, thanks again
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DirtDawg

Ex Member

Re: wo or db in convertible?
Reply #11 - 10/23/05 at 18:53:05

[quote author=GRIMM link=1130028812/0#9 date=1130088554]thanks alot guys, i have another question, does the wo have a top? all the pictures show all the inside, is this just for the sake of showibg the inner workings? and if it does have a top is it cut at all or is it an exact copy of the bottom? [/quote]

Hey, GRIMM,

Some of the pics show a WO32, which is a different box altogether, with a glass top as a fashion statement. I think that could be a little dangerous in a car. Some people don't use a top, instead they place the WO flat on a carpeted floor for better coupling to the room. I found this to be a mistake for my setup, while it might have made a better coupling to the floor, the sound was not as tight.
I built my WO cabs with a solid top, the same as the bottom, but it must be removable for driver access, so I put screws every 3" and a foam gasket between all the edges.

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DirtDawg

Ex Member

Re: wo or db in convertible?
Reply #12 - 10/23/05 at 18:58:03

[quote author=GRIMM link=1130028812/0#10 date=1130089755]hey guys, how would these subs be wired 2,4 or 8 ohm, i am using a 1200 watt 2 channel amp, any suggestions? i would not know the difference since this would be my first build, thanks again [/quote]

The wiring depends on your drivers and the amps impedance. What is the impedance of the driver you are using?
Are your drivers dual voice coil?
What is the minimum impedance the amp can handle?
Will you run the amp mono or stereo?

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GRIMM Ex Member	Re: wo or db in convertible? Reply #13 - 10/24/05 at 03:11:21 hi dirtdawg, thanks for the tips, the amp impedence?, i am not sure, the subs are dual voice coil, i do not know much about alot of these things but i will find out and let you know
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GRIMM Ex Member	Re: wo or db in convertible? Reply #14 - 10/24/05 at 04:05:19 hi there dirtdawg, i found out the sub nominal impedence is dual 4 ohm, does thia help?
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