New Mach 5 Audio UXL-18 Driver

22027 Views 59 Replies 17 Participants Last post by dan711, Jun 24, 2012

BBLV

Discussion Starter · Sep 7, 2011

If you haven't heard, Mach5's new 18" driver's T&S specs were released today. I tried modeling up a few enclosures but was running into a problem. To keep the tuning down in the mid teens and the port velocity within reason it was spitting out port lengths over 50"... I probably input something wrong... Anyone mess with this driver in WinISD yet? Any tips or even a screenshot of your driver parameters??

Can't wait to see the real world performance of the UXL-18...

And by the way, I was secretly hoping it would have a tall surround!

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Mike P.

· #2 · Sep 7, 2011

3

Yes, we finally have a reasonably priced 18" sub with performance capabilities. Shown below in 6, 9 and 12 cu.ft, all with 1200 watts input power.

Text Technology Line Electronics Electronic device

With 1200 watts it would be easy to get away with not using a hi-pass filter. The 6 and 9 cu.ft models reach Xmax at 13.5 hz, the 12 cu.ft model reaches Xmax at just over 12 hz.

Oscilloscope Text Line Plot Slope

Porting would be best done with a slot port, the lengths are easily doable for the box sizes modeled. The 6 cu.ft. model has the smallest port suface area which is 37.5 square inches, that that same area as three 4" round ports. The air speed shown would be a non issue.

Text Electronics Line Technology Computer program

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Mike P.

· #3 · Sep 7, 2011

Any tips or even a screenshot of your driver parameters??

Here's the driver file:

View attachment Mach 5 Audio Pi 18.wdr

BBLV

Discussion Starter · #4 · Sep 7, 2011

Awesome. Thanks Mike.

Mike P.

· #5 · Sep 7, 2011

I'm looking for 18" passive radiators to do some modeling, anyone know of any, other than the Acoustic Elegance ones?

GranteedEV

· #6 · Sep 8, 2011

Mach V said:
Low distortion motor with demodulating rings

:T Anyone know what the Le of he driver is? Anything close to 4 or lower and i'll be happy

I'm looking for 18" passive radiators to do some modeling, anyone know of any, other than the Acoustic Elegance ones?

http://meniscusaudio.com/css-pr1816-p-588.html
http://meniscusaudio.com/css-pr1821-p-625.html

Mike P.

· #7 · Sep 8, 2011

The Le has been asked for, I'll post it when I get a response.

Thanks for the links, but those are A.E. PR's that CSS was selling.

Owen Bartley

· #8 · Sep 8, 2011

Looks like a nice driver. I wonder what the pricing will be like on these. 9 cubes isn't even THAT big, and it seems like a pretty strong alignment tuned to 18Hz. Nice xmax at 34mm is a big step up from the IXL at 22mm, and the carbon fiber cone sure is pretty.

gperkins_1973

· #9 · Sep 8, 2011

Mark emailed me yesterday with an approx price of $450 per driver.

Mike P.

· #10 · Sep 8, 2011

I just noticed on the Mach 5 Audio website that the price has been set at $420.

http://www.istonline.ca/mach5_pi_18.html

themuffinman

· #11 · Sep 8, 2011

How would these model with 2 of the Exodus audio maelstrom PR's? I have 2 that I need to do something with...

Mike P.

· #12 · Sep 8, 2011

Lucky you to have the Exodus PR's. What are the parameters of them?

themuffinman

· #13 · Sep 8, 2011

I pulled these from the PDF from diycable.com

Fp: Resonance frequency (in free-air with no added mass) - 20.5 Hz
Qmp: Mechanical compliance loss - 6.8
Mmp: Moving mass - 300g
Cms: Suspension Compliance - 0.20 mm/N
Vap: Stiffness of driver scaled by cone size - 391L
Sd: Area of the cone - 1182 cm^2
Suspension Travel - 35-38mm one way. Somewhere around 70- 76mm peak-peak, depending on how far you stretch the suspension.

Mike P.

· #14 · Sep 8, 2011

This would be a 24" external cube. 1200 watts of power with a hi-pass filter at 10 hz. 1500 grams of mass added to each PR. 115 db at 20 hz plus any room gain provided.

Text Line Technology Electronic device Parallel

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themuffinman

· #15 · Sep 8, 2011

That does look pretty good. Is that what you would go with?

The amp is a Crown XS900 and I will most likely go with the miniDSP.

Mike P.

· #16 · Sep 8, 2011

Yes, personally I like cube subs. You'll have to do some math first to make sure there's enough room for the mounting depth of the driver and PR's.

Owen Bartley

· #17 · Sep 22, 2011

muffinman, have you come any closer to pulling the trigger on an order? I'm anxious to see a build with the new driver!

themuffinman

· #18 · Sep 22, 2011 (Edited)

Yes, they are available tomorrow. I keep checking the site. I will place an order as soon as it is ready. I'm in Kansas City, so I figure it would take about a week to get here. I've started construction on the cabinet already. 3/4 birch with the PR sides and the driver sides double walled and flush mounted. 25" squared.

I guess it would be the same box as this,

http://www.hometheatershack.com/forums/ported-subwoofer-build-projects/18068-maelstrom-x-2x18-page-ranking-25in-cube-16hz-build-thread.html

I stand corrected. I just ordered it. 10 days to build then 10 to ship.

vann_d

· #19 · Sep 29, 2011

4 weeks? Man. I guess for half price of an LMS it could be worth the wait. I'm interested to hear your upcoming experience.

Binary

· #20 · Oct 3, 2011

Mike P. said:
Yes, we finally have a reasonably priced 18" sub with performance capabilities. Shown below in 6, 9 and 12 cu.ft, all with 1200 watts input power.

View attachment 32575

With 1200 watts it would be easy to get away with not using a hi-pass filter. The 6 and 9 cu.ft models reach Xmax at 13.5 hz, the 12 cu.ft model reaches Xmax at just over 12 hz.

View attachment 32576

Porting would be best done with a slot port, the lengths are easily doable for the box sizes modeled. The 6 cu.ft. model has the smallest port suface area which is 37.5 square inches, that that same area as three 4" round ports. The air speed shown would be a non issue.

View attachment 32577

I'm not trying to shoot this driver down in any way shape or form. In fact, its really a good driver.

But the SDX 15 original models very close to it. And that's a 15" driver compared to an 18.

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