xmax .9 what does this mean

[systemnewb]

does this mean .9 both ways or just one way sub is a splw-15

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[fazes 10+ year member]

excursion max .9 inch usually

 

[indosia 10+ year member]

Ya it should be one way. It's how far the woofer moves outward. .9 is like, don't stick your head to close to the woofer cause you might get knocked the f**k out. Na i been hit by a 10w3 before though.