DevilDriver

Will get enclosure recommendations up when I get a chance. Thanks to Duke for helping contribute to the thread!

*If you have specifications for other drivers that are not listed here, please pm them to me rather than adding to the thread. This will make for the most seamless and easily viewable thread.* Atlas 12" Low Qts Specs Fs 23.2 Hz Qms 4.9 Qes .354 Qts .33 Vas 128.5 L Re 2.8 ohms Znom 4 ohms Xmax 18 mm Sd 481 cm2 Mms 119 g Vd 1.73 L RMS Power 300 watts BL 11.7 Spl 1W/1M 88.5 dB Spl 2.83V/1M 92.6 dB Le .86 mH Cms .395 mm/N No. .442 Cutout 11.125" Diameter 12.5" Depth 6.5" Weight 21 pounds Mid Qts Specs Fs 23.2 Hz Qms 4.9 Qes .465 Qts .415 Vas 128.5 L Re 2.8 ohms Znom 4 ohms Xmax 18 mm Sd 481 cm2 Mms 119 g Vd 1.73 L RMS Power 300 watts BL 10.2 Spl 1W/1M 87.2 dB Spl 2.83V/1M 91.4 dB Le .86 mH Cms .395 mm/N No. .336 Cutout 11.125" Diameter 12.5" Depth 6.5" Weight 21 pounds High Qts Specs Fs 23.2 Hz Qms 4.9 Qes .581 Qts .52 Vas 128.5 L Re 2.8 ohms Znom 4 ohms Xmax 18 mm Sd 481 cm2 Mms 119 g Vd 1.73 L RMS Power 300 watts BL 9.1 Spl 1W/1M 86.3 dB Spl 2.83V/1M 90.5 dB Le .86 mH Cms .395 mm/N No. .271 Cutout 11.125" Diameter 12.5" Depth 6.5" Weight 21 pounds Atlas 15" Low Qts Specs Fs 21.5 Hz Qms 6.56 Qes .392 Qts .37 Vas 364 L Re 2.8 ohms Znom 4 ohms Xmax 18 mm Sd 810 cm2 Mms 139 g Vd 2.91 L RMS Power 300 watts BL 11.7 Spl 1W/1M 91.5 dB Spl 2.83V/1M 95.5 dB Le .86 mH Cms .388 mm/N No. .904 Cutout 14.125" Diameter 15.5" Depth 7.25" Weight 24 pounds Mid Qts Specs Fs 21.5 Hz Qms 6.56 Qes .483 Qts .45 Vas 364 L Re 2.8 ohms Znom 4 ohms Xmax 18 mm Sd 810 cm2 Mms 139 g Vd 2.91 L RMS Power 300 watts BL 10.3 Spl 1W/1M 90.6 dB Spl 2.83V/1M 94.5 dB Le .86 mH Cms .388 mm/N No. .711 Cutout 14.125" Diameter 15.5" Depth 7.25" Weight 24 pounds High Qts Specs Fs 21.5 Hz Qms 6.56 Qes .624 Qts .57 Vas 364 L Re 2.8 ohms Znom 4 ohms Xmax 18 mm Sd 810 cm2 Mms 139 g Vd 2.91 L RMS Power 300 watts BL 8.5 Spl 1W/1M 89.5 dB Spl 2.83V/1M 93.5 dB Le .86 mH Cms .388 mm/N No. .567 Cutout 14.125" Diameter 15.5" Depth 7.25" Weight 24 pounds Avalanche 12" Fs 23 Hz Vas 80 Liters Qms 4.36 Qes .39 Qts .358 Znom 4 ohms Re 2.8 ohms Mms 197 g Sd 480 cm^2 - (74.4 sq.in) Pnom 800 watts Avalanche 15" Fs 15.7 Hz Qms 3.5 Qes .334 Qts .305 Vas 300.6 L Re 3.2 ohms Znom* 4 ohms Xmax 27 mm Sd 749 cm2 Mms 269 g Vd 4.04 L Pnom 800 watts Le 2.4 mH Avalanche 18" Fs 16 Hz Qms 6.00 Qes .429 Qts .400 Vas 550 L Re 3.2 ohms Znom* 4 ohms Xmax 27 mm Sd 1210 cm2 Mms 369 g Vd 6.53 L Pnom 800 watts Le 2.4 mH Assassin 8" Znom 4 ohms BL 12.3 n/a Re 3.5 ohms Sd 187 cm2 Fs 46.5 Hz Mms 80 g Vas 7.3 L Xmax 15.5 mm Qms 2.72 Spl 83.2 dB 1W/1M Qes .54 Rec. Power 150 W Qts .45 Rms 350W Le 3 mH Assassin 10" Znom 4 ohms BL 12.3 n/a Re 3.5 ohms Sd 326 cm2 Fs 32 Hz Mms 104 g Vas 37 L Xmax 15.5 mm Qms 3.63 Spl 85.8 dB 1W/1M Qes .485 Rec. Power 200 W Qts .428 Rms 350 W Le 3 mH Assassin 12" Znom 4 ohms BL 12.3 n/a Re 3.5 ohms Sd 480 cm2 Fs 23.1 Hz Mms 122 g Vas 128 L Xmax 15.5 mm Qms 4.00 Spl 87.8 dB 1W/1M Qes .41 Rec. Power 250 W Qts .372 Rms 350W Le 3 mH Arsenal 10" Znom Dual 4 ohms BL 19 n/a Re Dual 3.5 ohms Sd 330 cm2 Fs 29 Hz Mms 150 g Vas 31.2 L Xmax 20.5 mm Qms 4.01 Spl 83 dB 1W/1M Qes .59 Rec. Power 400 W Qts .515 Rms 750W Le 1.8 mH Arsenal 12" Znom Dual 4 ohms BL 21 n/a Re Dual 3.5 ohms Sd 530 cm2 Fs 27 Hz Mms 196 g Vas 71.1 L Xmax 20.5 mm Qms 5.01 Spl 85.6 dB 1W/1M Qes .59 Rec. Power 500 W Qts .538 Rms 750W Le 1.8 mH Arsenal 15" Znom Dual 4 ohms BL 21 n/a Re Dual 3.5 ohms Sd 860 cm2 Fs 23 Hz Mms 235 g Vas 185 L Xmax 20.5 mm Qms 5.21 Spl 87.6 dB 1W/1M Qes .59 Rec. Power 600 W Qts .54 Rms 750W Le 1.8 mH Havoc 15" Znom Dual 2 ohms BL 20.16 n/a Re Dual 1.73 ohms Sd 856 cm2 Fs 32 Hz Mms 244 g Vas 106 L Spl 91.0 dB 1W/1M Qms 6.8 Rms 1500 W Qes .418 Qts .394 Le 1.1 mH Poly 6.5" Znom 4 ohms BL 5.43 n/a Re 3.2 ohms Sd 140 cm2 Fs 46 Hz Mms 16 g Vas 20.8 L Xmax 11.5 mm Qms 2.714 Spl 88 dB 1W/1M Qes .501 Rec. Power 25-100 W Qts .423 Rms 100W Le .05 mH Havoc 18" Znom - Dual 2 ohms RE - Dual 1.5 ohms Fs - 22.9 hz Vas - 280 liters Qms 4.962 Qes - .334 Qts - .318 Le - 1.2 mH Bl - 21.4 n/a Sd - 1210 cm^2 Spl - 91.8db 1w/1m Rms 1500 Xmax - 25

Yup, they are indeed correct. I have all of the thiele/small parameters and enclosure recommendations for Ascendant Audio at home on my laptop and will get those up later tonight.

So what does this mean to the average JOE? I like reading about all the tech stuff that is involve in the making and tweaking of speakers, but you've lost me with all this tech talk. Is there a way you can explain this for the majority of the people on the forum. By the way, it's great to read stuff like this on the forum. It tells me that some people know what they are talking about, unlike most other forums, where all the concern is..... Is it louder? What's the MAX wattage I can put into this Sub? Not my cup of tea, but I've been there. (late 80's..Mustang hatchback and 2 15'' MTX subs...crazy times)Maybe age has caught up with me. What Scott is basically describing is decreasing both the inductance and inductance variation. The lower inductance is usually good for better transient response (meaning better top-end performance with what is usually considered a more "accurate" or "quicker" sound). The lower inductance variation is good for decreasing distortion. Overall, inductance only counts for roughly less than 10% of the total distortion product (which is why he mentioned there would be no magical changes) but it is a logical improvement to be made. Thanks for the reply Scott. Much appreciated.

Good compromise between lead slap and weakening the spider.

I don't think it's very loud though.

Bump?

Same here, and that is the 3 month average listed on the alexa.com website.

Get the SAZ-1500D. Maybe it's because I still love that XXX motor....

Couldn't agree more. I have had chocolate and golden labs, loved em both.

Haven't seen that show in ages.... Anyways, Aaron had once mentioned that he wanted to do a list of books you must read before you die. I'm not about to start that, but maybe we can get some book discussion going anyways. Here's my collection so far, minus the ~30 Stephen King's I have upstairs. A picture for scale. Now for a few personal favourites. I'm a big Poe fan and have read this collection of his a few times now. Richard Dawkins is famous for his atheist viewpoints and his similar book "The God Delusion". However, I found this one to be more interesting. Guess I didn't get a very close pic of this one, but this is my third time around owning it. Tom Clancy - Rainbow Six. Still some great, great fiction. These last two are very near and dear to my heart. First, a book I highly recommend to anyone who is interested in sound and the production of it. Brian Moore - An Introduction to the Psychology of Hearing And lastly, the ever-popular... Post up what you've got.

Looks awesome.

Well, the Ben Milne story is a long and painful one that I'm not sure is worth going into for the 100th time, particularly on a board that prides itself in mature and ethical behaviour Here is a rather long run-on about some of the eD issues with a fair bit of bickering and some very influential people speaking their minds. http://www.caraudio.com/forum/showthread.php?t=61209

Pacman box? That's a new term to me. Any further explanation possible?

Well that escalated quickly. Deep breathes? Personally, I am not a fan of any of the CDT sets I have heard either, primarily because there has never been enough midbass output to cross over to my substage as I would like. I have heard the ES-620's, HD-62's, and CL-62's (the ones with the titanium tweeters, I think they're TW-25T tweets or something similar). Were they ok to listen to? Sure, but output below 80 Hz is not near enough for me when I need something that will get down to 50 Hz or lower with the best of em. My 2 cents.

That's the current Ascendant Audio website, but you can check out some of the older ones using this: www.webarchive.org

This is why you should be comparing the BL^2/Re value. Even then, the difference is not that much. As for the Vas, there are a little over 28 litres in a cubic foot (28.316 iirc). That should get you started.

even if it would be a horn, i would call that a rear loaded horn. Yup, looks good though!

Hate to be a stickler, but that's a nice flared port.

Wow, thanks for the reminder; I haven't listened to any of their music in 2+ years. Fleetwood Mac - The Chain

Thanks Aaron. Rough estimate is probably better as there are ALWAYS delays and an exact date would just lead to disappointment

Rough timeline?

The enclosure will have relatively little effect on upper frequency response; this is mostly controlled by the inductance of the voice coil, which behaves as a low pass filter. A rough calculation of the frequency at which rolloff will begin can be completed using the listed parameters; I'll try to get to this a bit later, but based on the listed inductance (Ls), I don't think roll off will be too much a of a problem for you in that range. It certainly would not be my preference, as I prefer to cross the sub-stage over much, much lower, but it is workable.

Seems awfully silly and like a lot of unnecessary work.

Tried Alexander Keith's before? Great pale ale.