woofer excursion

[audioholic 5,000+ posts]

so in a ported incloser at the tuning frequency the port makes up for the lesser cone excursion?am i understanding that right?

Correct. At the enclosure's tuning point,direct output from the speaker is at its least, but enclosure/port efficiency is at its greatest.

I agree that music is transient in nature, but keep in mind that excursion drops drastically as the frequency increases. If tuned to, say 20 Hz, it takes almost a full octave for the air mass in the port to be minimized in its effect on the speaker's excursion; by that time, you're at 40 Hz and the excursion that will be induced is disappearing. As someone who had the privilege of using one for a short time frame and almost bought one a few weeks ago, I assure you that there is no ported enclosure where you can achieve anywhere near Xmax with power that won't melt the coil, unless playing below Fb.

Im afraid Im not following you there. You make it sound as if there wont be any rise in cone excursion by going up an octave, which there will be. Maybe Im misunderstanding your wording? Do you have a link or something? Im curious.

 

[audioarsonal 10+ year member]

do i want to use the resonant frequency of the speaker or the vehicle?i ve heard that you want to match the vehicle to get the most vibration,is this correct?

 

[audioholic 5,000+ posts]

do i want to use the resonant frequency of the speaker or the vehicle?i ve heard that you want to match the vehicle to get the most vibration,is this correct?

If you are wanting to burp as loud as possible, you tune the box according to the resonant freq of the vehicle. You actually tune 8-10 hz below the res freq.

 

[audioarsonal 10+ year member]

thanks audioholic you've been lotss of help!!youz tha shizit

 

[45auto 10+ year member]

My xmax is a little over 6 inches, at full excursion...

 

[audioholic 5,000+ posts]

Glad I could help.