MTX T9515 specifications?

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After looking at Danley designs using the MTX 9515 (th50 and I believe the Matterhorn), I became curious how it would preform in lilmike's Lilwrecker, found some parameters and put them in, but I couldn't find an impedance spec. Does anyone know or can find that spec on the MTX 9515 (either dual&single VC, 4ohm, doesn't matter)? I can't find it anywhere on MTX or the other main sites that I thought might have them. If anyone can find out/knows that would be awesome to post on this thread as I'm definitely curious as to how it sims.

I found one for sale for $400 on ebay with the enclosure but is more than I can afford. but as the original went for $560 a good price for someone who does and is interested: Mtx 9500 Thunder 15"

Here is what parameters I was able to find at the MTX site: https://www.mtx.com/mtx-thunder-t9500-2003-car-sub-archive
 
Depends on whether it's a 9515-22 [dual 2 ohm] or -44 [dual 4 ohm] and whether they're wired in series or in parallel. Don't remember any single coils.

Regardless, it's listed on the MTX site for the -22 = 0.89 ohms [parallel] and -44 = 1.71 ohms [parallel]. What they don't publish is inductance [Le] and these type drivers typically have a lot, which will impact the response, especially TH where more is normally better.

If you scroll down there's a support file you can view/download w/specs for each driver.

GM
 
GM, inductance is not going to be high with a voice coil as large as 4" has large shortening rings and other specs it has, and Danley has never been known for choosing drivers with high inductance as seen typically in car woofers. This company has no reason to hide it unless they fear it will be rejected for likely being better (if you believe Danley approvability and those specs mean anything) than other drivers with the same xmax. And yes, MTX had single 4 ohm Thunder 9515, and a dual 4 ohm, look at the link I posted.

Thanks Tundra. I found Ricci measured the dual 4 ohm on data-bass, pretty cool I can simulate both drivers now. http://www.data-bass.com/data?page=driver&id=49
 
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Here's what I was able to simulate with Ricci's specs (black), compared in series to the SWS-15D4 (grey), both nearly 8 ohms, 2.83 volt:
Y6IfVhB.png

9515-04 with LTD's Le measurement (black), SWS15D4:
AOBOX1w.png


Max SPL each at max thermal load. Neither can be bottomed out in this enclosure with proper filtering:
BJrm4ed.png

These are very very good results with the MTX, managing to hit 120 dB at just 16hz. In reality this likely would sound incredible, as not only is it simulated as the highest SPL driver that fits, the impulse response with it's parameters is also the nicest I have seen with this enclosure.

Interestingly, since the SWS has an xmech of 34mm, the driver will work with a High-pass filter to just under 14hz:
irzqGPW.png


The 9515-04, a little bit higher, but still some very low response from a horn.
pOB9RGo.png


I think I'm going to post this on the Lilwrecker forum on AVS by lilmike, as this is some very interesting information in favor of this driver.
 
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