Need T/S parameters for Audiomobile Mass 12 driver

[Eric S]

Hi Folks,

I'm a long time lurker but an infrequent poster who is hoping someone can help out. It was the posts by ThomasW years ago that convinced me that my new sub just HAD to feature an Audiomobile Mass 12 driver :B and now I can't find my spec sheet and the company appears to be defunct. :cry: The specific driver I have is the Mass 2012 S24 (purchased in 2000), dual voice coil, 12 inch driver, 4 ohms per voice coil.

Could someone please post the full set of specs for this driver for me?
Thanks!
Eric

[Andrew Pratt]

Here's whats in the WinISD driver database...

[Driver]
Brand=Audiomobile
Model=MASS 2012 S24
Manufacturer=
ProvidedBy=Janne Ahonen
Comment=
DateAdded=20020401
DateModified=20020401
Qts=0,418
Znom=2
Fs=22
Pe=650
SPL=85,41
Re=1,9
Le=0
fLe=0
KLe=0
BL=10,85081
Xmax=0,0244
Cms=0,0002594
Qms=5,8
Qes=0,45
Rms=4,8079
Mms=0,2017
Sd=0,05
Vas=0,092
Dia=0
Vd=0,00122
no=0,002117
Dd=0,2523
EBP=48,89
numVC=2
Hc=0
Hg=0
SPLmax=110,54
SPLmaxLF=102,29
USPL=91,66
alfaVC=0
Rt=0
Ct=0
gamma=53,78752
Rme=61,96844
Mpow=7,872
Mcost=0
c=343,68
roo=1,20095

[Eric S]

Thanks, Andrew! :T When I last used WinIsd, they didn't have the Mass driver in their database. I've since upgraded my PC and my own WinISD entry for this driver was lost.

Looking over the specs, I wonder if they've changed between 2000 and 2002. I thought I remembered a moving mass of something like 160g and BL closer to 20... hmmmm...

Eric

[Dennis H]

It looks like you may need to to some units conversion on those numbers. At a glance, it appears that Xmax is in meters, Mms in kilograms, Vas in cubic meters, etc.

[ThomasW]

Here's a website with some Dumax testing parameters

http://www.diysubwoofers.org/misc/dumax/dmeasure.htm

[Eric S]

Thanks, Thomas! The number for the single voice coil driver are fairly similar to the DVC. From a number of sources, I have been able to put together a list of the T/S parameters for this driver.

Audiomobile may be defunct, but its still an awesome driver!

Eric