x-max q

[fosgaholic218 10+ year member]

what is the advantadge to having a sub with alot of x-max

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[kotec123 10+ year member]

more displacement

 

[rocky 59 5,000+ posts]

it looks cool //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[fosgaholic218 10+ year member]

yea but does it make it sound better or make it louder is what im trying to figure out

 

[zsondy1 10+ year member]

In addition to not really being designed to belt out much below 30hz, pro audio subs are also designed in such a manor that they really rely on the enclosure to provide their low frequency output and extension (ported, horn loading, etc). And in a situation such as this, excursion isn't necessarily the dominating factor.


Less excursion = less distortion, for any subwoofer ... in relation to itself. Subwoofer "X" will have less distortion at 5mm excursion than it will at 15mm. This is true of any subwoofer. However, subwoofer X won't inherently have less distortion at 5mm than subwoofer Y at 5mm just because it has less linear excursion capabilites (Xmax). Quite the opposite will generally hold true. If subwoofer X has an Xmax of 8mm, and subwoofer Y has an Xmax of 20mm....generally at 5mm (just as an example) of excursion subwoofer Y will have less distortion since it is operating further within it's linear excursion capabilites, wheres subwoofer X is operating very close to it's linear excursion capabilites. The closer you are to Xmax, the higher the distortion. This is one of the benefits of a high excursion driver, even if you aren't going to actually use all of it's excursion capabilities.

Obviously the above isn't all encompassing, and things like motor design, etc will affect ultimate distortion and "sound quality" performance. But, as a generality....

excellent quote from squeak that he made over at cs.org

 

[fosgaholic218 10+ year member]

thanks that helps. more info would be appriciated

 

[ExtremeODD 10+ year member]

I have to say a load of xmax on a small sub does look pretty sweet and it displaces a ton of air. My 8812 moves much more air than my l5 12in under same power. It also hits a bit harder, Im thinking its from the much larger xmax (not sure on numbers but its pretty high, it flys around, aparantly if it hit too low of a note [go filters] it could easily hit xmech with being over powered 100watts)

 

[helotaxi 5,000+ posts]

In a sealed box higher Xmax will give you more potential SPL. In a sealed box, not so much, motor power is more important. Basically as mentioned above, the more Xmax you have to work with, the higher the potential output with less distortion.