12" driver with big Xmax,low Fs, & high efficiency?

[WolfmanX]

I am search for a 12" sub drive with the Largest Xmax (over 13mm one way),the lowest Fs, highest efficiency that I can find, so for the best I have found is the one spec'ed below.

Does anyone know of a 'better' driver given the requirments?

Thanks,
Brian

FS: 16.3 Hz
Re: 3.36 Ohms (6.72 Ohms per voice coil)
Qms: 11.16
Le: 2.38 mH (4.76 mH per voice coil)
Qes: 0.41
Sd: 506 cm^2
Qts: 0.40
Xmax: 14.3mm one way
Vas: 149 liters
Pmax: 650W
SPL: 84 dB SPL @ 1W, 1m (87 dB @ 2.83 Vrms, 1m)

 

[bob4]

Eminence LAB12??

http://www.prosoundweb.com/lsp

http://www.diyaudio.com/forums/showthread.php?s=&threadid=6582&highlight=Lab+Horn

 

[daatkins]

You don't give any indication of a price range but here are some options:

Blueprint 1201: Xmax = 16mm for $91
Stryke SAE1204: 14.3mm for $109
Adire Shiva: 15.8mm for $125
NHT1259: 13mm for $150
Stryke AV12: 23mm for only $140 on pre-order ($175 normal)
Stryke SAL: 14mm for $179
Blueprint 1203: 26mm for $219
Adire Tumelt: 34mm (!) for $499

All these drivers have various pros & cons so look around the manufacture's web sites for more info. Most manufactures also have other drivers that I haven't listed here.

You say you want high efficiency but you must understand that high efficiency and deep bass means a large box. There's no getting away from it, I'm afraid...

Nice one,
David.

 

[Westrock2000]

Ya like what he said above.....

The Adire Tumult

http://www.creativesound.ca/details.php?model=TUMULT

 

[WolfmanX]

Thanks guys

Thanks for the info.

I model those drivers in a sealed box and the one that I listed comes out with the lowest -3dB point at 28.85Hz.

Seems that will be the one I will get.

Thanks again

 

[sfdoddsy]

Was that the Adire DPL12?

Steve

 

[WolfmanX]

Yes, it is.

Correct.

 

[JohnR]

I like the DPL12. I use them in isobaric configuration in 35 liters (!). They model nicely for infinite baffle too which is where I hope they will end up.

JohnR

 

[WolfmanX]

JohnR

JohnR,

What is the advantage to using 2 in an isobaric alignment?

I modeled that in WinISD and the frequency response is the same as a single.


What did you mean:

They model nicely for infinite baffle too which is where I hope they will end up.

?


Thanks

 

[zx3chris]

can never go wroing with the brahma

http://adireaudio.com/mobile_audio/drivers/brahma_series.htm

Param
10" 12" 15"
Fs 35 Hz 28 Hz 26 Hz
Qms 4.4 5.05 5.3
Qes 0.45 0.5 0.52
Qts 0.41 0.45 0.47
Vas 19.2 liters 37.2 liters 99.1 liters
Znom 1 Ohm parallel
Re2 0.65 Ohms parallel
Le3 0.9 mH parallel
BL 14.42 14.38 14.33
Sd 330 cm2 436 cm2 749 cm2
Xmax 27.32mm one way linear
Pmax4 1600W RMS, 4800W peak
SPL5 84.5 dB @ 1W, 1m 84.1 dB @ 1W, 1m 87.1 dB @ 1W, 1m
Diameter 10.5" 12.5" 15.5"
Cutout 9" 11.125" 14"
Depth 6.5" 7.25" 8.25"
Weight 37 pounds 39 pounds 41 pounds
Price $339 $369 $429

 

[JohnR]

WolfmanX, the main advantage is box size, which is cut in half. There's a possible advantage that even-order distortion is reduced because of the face-to-face mounting but I don't know how real this is. On the down side you lose 3dB sensitivity and have twice the cost in drivers. I really only did it this way because I had the drivers and can't deal with large boxes right now.

Infinite baffle: put say 10,000L box size into your simulator. Some pics:

http://t-3.cc/users/audioworx/page100IB-Gallery.html

Hope this helps! What is your application?

JohnR

 

[WolfmanX]

JohnR

The main application will be home theater, that is why I am looking at low frequency extension.

The DPL12 in a 70.1 liter box will get me to 28.85Hz, and I was thinking of adding a Linkwitz Transform circuit to take the -3dB point down to 20Hz.

thanks

 

[zx3chris]

if you want low low frequency extension, tune it really low, and make a very large slot port to reduce port noise.. this plot is a brahma in 11cubes, tuned to 18hz (15"x5"x49") port.. given 500Wrms itll put out 115db across the board all the way down to 15hz.. p2p xmax on this sub is about 57mm, so itll be fine in that department.. this sub has gained a famous reputation in car audio and makes an excellent ht sub--

An externally hosted image should be here but it was not working when we last tested it.

-chris

 

[BrianGT]

I know that the Adire Tumult is a 15", but it is one scary driver with a huge Xmax!

the pictures say it all:

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

Too bad you missed the pre-order that ended on the 15th...

--
Brian

 

[cak]

Seems promising, concidering the price. Haven't used one though.

12"

18.9mm xmax

fs 22.18

SPL 91.3db

$149


http://www.partsexpress.com/pe/show...&St3=59250129&DS_ID=3&Product_ID=117655&DID=7

 

[zx3chris]

also check out the new stryke

AV12 T/S
Fs: 21Hz
Qms: 4.41
Qes: .399
Qts: .366
Vas: 88 L
Re: 2.97 ohm
Z: 4 ohm
BL: 15 Tm
Cms: .25 mm/N
Mms: 228 g
Pe: 500W
1W/1m: 85.5dB
2.83V: 89.5dB
Xmax: 23 mm
Xsus: 30 mm
Sd: 498 sq cm
Vd: 2.33 L

$175 list price

$140 preorder!



AV15 T/S
Fs: 19.7 Hz
Qms: 4.71
Qes: .399
Qts: .368
Vas: 228 L
Re: 2.97 ohm
Z: 4 ohm
BL: 15.5 Tm
Cms: .25 mm/N
Mms: 260 g
Pe: 500W
1W/1m: 88.5dB
2.83V: 92.5dB
Xmax: 23 mm
Xsus: 30 mm
Sd: 802 sq cm
Vd: 3.8 L

$205 list price

$165 preorder!

http://www.stryke.com/

 

[Jimmy154]

I know that the Adire Tumult is a 15", but it is one scary driver with a huge Xmax!

Brian

Why would a sub that good have a foam surround? I can never understand that and I don't like the foam surrounds Even a $500 Focal 15" has one, but the 13" doesn't for some reason (forgot what model).

Dayton Titanic MK II is a very good one. They sell them at partsexpress.com for about $150, but partsexpress auctions them off on ebay for less.

 

[WolfmanX]

Still a toss up...

I think I have arrived at a stalemate.

The DPL12 and the Titanic MKII.

Both are very versatile and about the same price.


I am thinking a sealed enclosure for tight, fast, controlled bass.

My main application will be Home Theater.


Still debating...

 

[Jimmy154]

Aren't home threater sub about "quantity rather than quality"? I read that somewhere. So most people would preffer a vented sub. But I don't blame you I like sealed much better also.

You might be able to get the Titanic for around $100 on ebay if you want to take the time and paticence. I always go with ebay when I can. Although I'm looking for 2 15" subs that go in a sealed box. And 15's are almost impossible to find on ebay. Well the kind I'm looking for. Desent quality, home audio.