Another name for Moving Mass (Mms)?

[DBz Hertz 10+ year member]

Hey guys, I'm trying to design an enclosure around a subwoofer but the spec sheet for the woofer doesn't have the Mms figures. Is there possibly another name for this?

The woofer is an Alpine Type R SWR-1242D. Here's the link to the manual:

http://www.alpine-electronics.co.uk/fileadmin/user_upload/manuals/car_audio_manuals/SWR-1522D/OM_SWR-1522D_EN.pdf

Page 4 shows all the parameters. Thank you!

Click to read more...

 

[CHEMMINS 10+ year member]

Nothing for mass there at all. Pretty much everything but.

 

[DBz Hertz 10+ year member]

Nothing for mass there at all. Pretty much everything but.

Exactly...

 

[DBz Hertz 10+ year member]

What would you do without this information? Find a comparable sub and plug its number in? I called Alpine tech support and the guy didn't have a clue what he was talking about. He gave me a measurement in mm. I just said thanks and hung up.

 

[DBz Hertz 10+ year member]

Doesn't have CMS either... Guess I'm S.O.L.

 

[helotaxi 5,000+ posts]

It computes to 218.8g. If you have Sd, WinISD will figure it out for you.