Xmax and Xsus

[violator5spd 10+ year member]

Well I'll make this as short as I can. I was under the impression that the Xmax is how far a sub can move from it's resting position to it's outer-most peak. The thing I don't get is, how can a subs peak-to-peak movement be more than twice it's Xmax? Example:

IDMAX12, Xmax = .98in, Xsus peak-to-peak = 3.5"

I must be confused //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

Click to read more...

 

[violator5spd 10+ year member]

Ok...so Xsus is kind of like the MAX power of an amp...useless to an extent?

 

[supa_c 5,000+ posts]

like snovas eD k. //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

 

[violator5spd 10+ year member]

I notice that Xmax is often labeled 'one-way linear', so once the speaker starts traveling outside of it's Xmax, is it no longer traveling in a 'one-way linear' fashion?

 

[squeak9798 5,000+ posts]

I notice that Xmax is often labeled 'one-way linear', so once the speaker starts traveling outside of it's Xmax, is it no longer traveling in a 'one-way linear' fashion?

Yes.

If Xmag is less than Xsus, then the speaker can physically travel longer than it's Xmax (because Xmax is simply the lesser of Xmag or Xsus)......but once it goes beyond Xmag (Xmax) it is no longer traveling in a linear fashion.

IMO that is the way a sub should be.....it should run out of motor force before it runs out of room to travel. I believe this is what is referred to as a "bottom-less" sub.

 

[drkodin 10+ year member]

Ok...so Xsus is kind of like the MAX power of an amp...useless to an extent?

no

Xsus: the suspension capabilities of a subwoofer.

Xmag: the mechanical capabilities of a subwoofer.

which ever is lower is what Xmax is, because that is the maximum the subwoofer can move (undistorted). if Xsus is higher than Xmag you should be able to push the sub into distortion and gain more excursion (audiobahn //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif )

 

[Randy Savage 5,000+ posts]

Xsus is something that comes in handy with a lot of competitors...where no one gives a rats *** about linearity //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Diplexers 10+ year member]

XMAX is a subs "linear" maximum excursion. Lamens terms meaning how far the speaker can travel before going past its linear range. Once you pass linear range you start into major distortion. This doesn't really matter to spl competitors because they don't care about distortion. They are only trying to compress the cabin of the vehicle with as much force as possible. That is why they look at the speakers mechanical limits(XSUS, and XMECH).