help me use two free 15" drivers!!! - diyAudio
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Old 18th January 2004, 09:39 PM   #1
cowanrg is offline cowanrg  United States
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Default help me use two free 15" drivers!!!

my roommate was going through his stuff and realized he has 2 orion 15" car audio woofers that he's never used before. they seem ok. they work anyways. i have the specs for them, and i will post at the end of this.

i dont want to build something that i will necessarily USE, but just to play around really... what should i do? size doesnt matter. i was wanting to do a labhorn kinda thing, but the design uses 12" drivers, and not this one of course. i dont even know what to look for in the specs to see what its good for...

here are specs:

Orion XTR 15 DVC (dual 4 ohm voice coil)

impedance - 4 ohm
Re - 3.47 ohm
Levc - 0.77mH
SPLo @ 2.83v - 95.37 dB
Fo - 29.76
Qms - 2.7
Qes - 0.67
Qts - 0.53
BL - 9.0 TM
Sd - 0.0824 sq M
Vas - 331.46 Litres
Vas - 11.7 cu ft.
Xmax - 9.2 mm
Pmax - 800 watts

thanks guys!

p.s. - woohoo, 1,000th post!
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Old 18th January 2004, 10:38 PM   #2
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Build a pair of vented woofers for a little pair of speakers you have.
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Old 18th January 2004, 10:56 PM   #3
cowanrg is offline cowanrg  United States
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after hooking it up to a stereo amp and playing some test tones through one woofer, it seems like it doesnt go all that low... it starts to really roll off at like 60hz or so. it can BARELY do 40 and below.

in WinISD it shows dimensions for a sealed box, maybe ill give it a go. i just dont think it would have enough umph for an open baffle or anything like that.
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Old 18th January 2004, 11:04 PM   #4
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Fs=30
Vas=almost 12 Ft³
Sensitivity=95 dB ( I would like to know how that was measured, this being a DVC)
Qts=.53


These look like free airs.

If you ever wondered what a dipole sounds like, this sure sounds like the speaker to try it with. At 9 mm, it has a nice long excursion, too.

Grab a board, mount it, prop it up, and have fun.
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Old 18th January 2004, 11:27 PM   #5
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You could do a half Linkwitz Phoenix woofer with one of the 15-inchers in each box, instead of two 12" drivers.
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Old 19th January 2004, 01:07 AM   #6
cowanrg is offline cowanrg  United States
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is there any ryhme or reason to the size of the baffle? or is it just as big or as small as i want?

i was kinda hoping someone would say they would work for a dipole baffle ive been curious to try one.


Quote:
Originally posted by kelticwizard
Fs=30
Vas=almost 12 Ft³
Sensitivity=95 dB ( I would like to know how that was measured, this being a DVC)
Qts=.53


These look like free airs.

If you ever wondered what a dipole sounds like, this sure sounds like the speaker to try it with. At 9 mm, it has a nice long excursion, too.

Grab a board, mount it, prop it up, and have fun.
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Old 19th January 2004, 03:40 AM   #7
Sheldon is offline Sheldon  United States
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Quote:
Originally posted by cowanrg
is there any ryhme or reason to the size of the baffle? or is it just as big or as small as i want?

i was kinda hoping someone would say they would work for a dipole baffle ive been curious to try one.



Plug the numbers into the open baffle spread sheet found here:

http://www.t-linespeakers.org/

Sheldon
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Old 19th January 2004, 05:48 AM   #8
cowanrg is offline cowanrg  United States
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cool! i used the spreadsheet and the driver actually looks like it should be decent with a bit of power running into it.

the box will house two drivers, be around 4 feet tall. its gonna be BIG. if it sucks, i will only be out $20 or whatever for the MDF.

i was going to do something like this:

http://www.diyaudio.com/forums/showt...932#post177932

mine will just be a bit taller. hehe, i have maggies too
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Old 19th January 2004, 11:51 PM   #9
cowanrg is offline cowanrg  United States
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well, i stopped by home depot today and got a sheet of MDF. i designed the box so that i used a whole sheet wthout waste. the pieces are cut in the basement. i even got the crossover made and its working.

in the next couple of days i will put it all together and test it out
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Old 20th January 2004, 12:15 AM   #10
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Great!

Let us know how it works. Where do you plan to cross over?
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