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SUPPORT FORUMS FOR DECWARE SPEAKER PLANS >> Wicked One Support Forum >> WO with 15s....
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Message started by boominastro on 10/24/04 at 23:53:28

Title: WO with 15s....
Post by boominastro on 10/24/04 at 23:53:28

Can someone give me some dimensions on how to do a WO with 15's?  Like how tall should it be  if it's 36 inches wide and 36 inches deep??

Title: Re: WO with 15s....
Post by Tr3vWh0r3 on 10/25/04 at 01:58:47

2 inches taller than the subs, your going to have to angle the baffle alot though.

Title: Re: WO with 15s....
Post by boominastro on 10/25/04 at 10:26:44



Tr3vWh0r3 wrote on 10/25/04 at 01:58:47:
2 inches taller than the subs, your going to have to angle the baffle alot though.


so it would be 36x36x15.5? Why would I have to angle the baffle the sub is on?? thanks for the reply though

Title: Re: WO with 15s....
Post by boominastro on 10/25/04 at 10:28:18

blah, not 15.5 I meant to say 17 inches, my bad.

Title: Re: WO with 15s....
Post by Wrayza on 10/25/04 at 11:34:19

You would have to angle the baffle to make it wider, to accomodate your 15", remember you can't just make the depth larger than 13.5" and be done with it.

All of the WO's with the standard 36" width have a baffle thats about 11.5" wide when positioned in the middle. Angle it and you can change that to 15", but that would be a BIG angle!

Cheers, Mike

Title: Re: WO with 15s....
Post by Tr3vWh0r3 on 10/25/04 at 13:15:30

Yup, 17" high and angle the baffle. It should work, but alot of angle will be needed.

Title: Re: WO with 15s....
Post by BigAir on 10/25/04 at 15:50:46

You're right about the extreme angle.  In fact the angle is so extreme that it won't work unless you also make the horn a little narrower.  That will give you a little more room to work with.  If you just leave it, the angle gets so extreme that the drivers will bottom out and won't fit.  I know I've said before that I will take pics of mine, but this time I mean it.  

Title: Re: WO with 15s....
Post by bigmike216 on 10/25/04 at 23:05:01



BigAir wrote on 10/25/04 at 15:50:46:
 I know I've said before that I will take pics of mine, but this time I mean it.  


I'll hold you to that.. I want to see that thing!  ;D

Title: Re: WO with 15s....
Post by BigAir on 10/26/04 at 00:19:18

Here's the pics of the WO 15.  The baffles are somewhat removable at this point due to the fact that you can't get the speakers mounted with them in place.  I still need to come up with a good way of mounting the baffles and keep the ability to remove them.


Title: Re: WO with 15s....
Post by Tr3vWh0r3 on 10/26/04 at 02:08:24

Whoa that is alot of angle. Good looking box though BigAir, i'd love to have a listen.

Title: Re: WO with 15s....
Post by bigmike216 on 10/26/04 at 23:21:05

Looks cool!  ;D

Title: Re: WO with 15s....
Post by 60ndown on 10/27/04 at 00:01:40

sweet :D
question,

what moves more air or is louder?

2x 10 inchers long excursion 500wrms each

or

2 x 15 inchers regular excursion 250 wrms each?

my point is if we want louder / more bass why not just use more powerful 10s' and a bigger amp?

why mod the box to suit 15s? :-/

Title: Re: WO with 15s....
Post by Wrayza on 10/27/04 at 08:25:26

Your two examples may be on par with eachother, then again may not, there are alot of factors to think about.

Why do people go for 15's though? Simply to hit lower frequencies and/or have more usable bass in those ranges. Why is this possible? It's just down to 15's having a substantially larger cone area than 10's or 12's.

Cheers, Mike

Title: Re: WO with 15s....
Post by 60ndown on 10/27/04 at 14:21:10

but the driver regarless what size moves backwards and forwards at the speed the amp/signal dictates,so if a smaller driver is moveing farther then doesnt it move as much air?

Title: Re: WO with 15s....
Post by bigmike216 on 10/28/04 at 05:26:56

Well, which would be louder would depend on the efficiency of your drivers. ;D

Title: Re: WO with 15s....
Post by Wrayza on 10/28/04 at 07:58:24

Yes, but a 10" driver would have to move quite alot farther than a 15" driver to make up for the lesser cone area.

A 10" driver has roughly 78cm^3 cone area
A 15" has roughly 176cm^3

So the 10" would have to move roughly 2.25 times the distance of the 15" to achieve the same SPL at a given frequency. Of course thats assuming they both have the same sensitivity.

That is still alot more movement, and think about the excursion required to generate low frequencies such as 30Hz...

Cheers, Mike

Title: Re: WO with 15s....
Post by BigAir on 10/28/04 at 11:19:34

Why compare long excursion 10's to regular 15's.  That's comparing apple to oranges, right?  If you're going through the trouble of building a WO for 15's because you want it to be louder, you might as well load it with powerful 15's just as would have loaded your 10" WO with powerful 10's.

Title: Re: WO with 15s....
Post by 60ndown on 10/28/04 at 11:54:23

just thinking out loud ::)

Title: Re: WO with 15s....
Post by boxmaster on 10/29/04 at 00:56:52

why, why, why.  the mods are not needed. wickedone with dhm 108 s, a nine volt driver and one kicker 500.2......160dbs.so clear, so tight and hits so fucking hard you ll almost puke at times!!!!!! i have heard many many sub applications from 100$ to 5000$ and nothing sounds like this box driven correctly. my hats off to steve time and time again... have fun and peace....

Title: Re: WO with 15s....
Post by 60ndown on 10/29/04 at 02:29:56

9 volt driver?

Title: Re: WO with 15s....
Post by bigmike216 on 10/29/04 at 06:10:00

Line driver I think he means.

160db's? Am I the only one to call bs?

Title: Re: WO with 15s....
Post by 60ndown on 10/29/04 at 14:18:01

you mean increasing the signal strength from the head unit from about 2 or 4 too 9? into the amp?

Title: Re: WO with 15s....
Post by 60ndown on 10/29/04 at 14:21:47

dunno bout bs, whats the power output of the kicker?whats the world record for spl db now days? wo is a good desighn with 2 of steves subs and a good amp in a small space?

Title: Re: WO with 15s....
Post by Tr3vWh0r3 on 10/29/04 at 16:57:09

I know a DBDrag competitor hitting 163 with two 15" Juggernauts and about 3000 watts per sub. I'll second the bs call, but im sure it does hit hard.  ;D

Title: Re: WO with 15s....
Post by bigmike216 on 10/29/04 at 22:50:53

I don't doubt it hits hard at all!

Title: Re: WO with 15s....
Post by boominastro on 10/30/04 at 05:58:08

sooooooo, If I angle it too much I won't have enough sealed air space for the subs???

Title: Re: WO with 15s....
Post by Wrayza on 10/30/04 at 12:05:39

The sealed chamber space shoudn't be effected if you angle the baffle correctly.

Mark the centre point where the baffle is designed to go, and pivot it until theres enough angle to allow for a 15".

Title: Re: WO with 15s....
Post by Braggi on 10/31/04 at 18:31:05

Back to comparing long-excursion 10s vs. 15s there is a very good reason to go with larger drivers. The less the excursion the less the distortion and the less the strain on the driver. "Effortless" is the word for all the best bass reproducers. The less the driver moves to achieve the SPL the better.

Title: Re: WO with 15s....
Post by kmon on 11/04/04 at 18:09:52

nice work guys, i was wondering what kindof mounting depth you had with the baffle at that extreme on an angle. Maybe i could invert the sub and fire into the sealed area? If i have to go with 12's my feelings wont be hurt too bad but having 15's would be nice.

Title: Re: WO with 15s....
Post by lunarlab on 12/06/05 at 20:18:14


kmon wrote on 11/04/04 at 18:09:52:
nice work guys, i was wondering what kind of mounting depth you had with the baffle at that extreme on an angle. Maybe i could invert the sub and fire into the sealed area? If i have to go with 12's my feelings wont be hurt too bad but having 15's would be nice.

I built a 12 inch version with MTX thunder 9000's for a friend. MTX amp with 600 watts RMS bridged at 4 Ohms.  I  mounted the speaker inverted and in reverse phase.  I calculated the speaker displacement and the amount of volume I lost in the sealed side when angling the baffle.  Turning the speaker around kept the box volumes the same as before modification so the tuning would be the same....although I modded the port area to allow more airflow.  I also added some bracing in the ported side to take up some space....just try to keep your box volumes equal in ratio.  Also a note of interest....Horn mouth size is in direct ratio with cone area. 15 inch speakers have twice the cone area as ten inch drivers.  In my opinion the horn mouth should be twice the size then.... You decide. ???

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