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SQBubble
06-15-2006, 11:01 AM
is f3 means the tuning port of an enclosure?

HotCarl
06-15-2006, 11:03 AM
fb = tuning
f3 = 3db down point.

SQBubble
06-15-2006, 11:07 AM
oh ok thx
then ,
how do u know the f3 and fmax if i have a box 3.8net with fb:27hz

heyman421
06-15-2006, 11:33 AM
http://64.233.167.104/search?q=cache:-Eb16KuDjlYJ:www.highefficiencyloudspeakers.com/user/Alignments.pdf+f3+formula+3db&hl=en&gl=us&ct=clnk&cd=1&client=firefox-a

i'd be more helpful and find it for you, but i have no idea what that means :)

HotCarl
06-15-2006, 11:35 AM
oh ok thx
then ,
how do u know the f3 and fmax if i have a box 3.8net with fb:27hz

winisd.

Volenti
06-15-2006, 11:44 AM
oh ok thx
then ,
how do u know the f3 and fmax if i have a box 3.8net with fb:27hz

you use a modeling program;

These vary according to the driver used (and vary again, greatly,when you put it in a car) eg;

3 random 15's I pulled up in BB6pro using 3.8net with an fb of 27hz;

F3(hz) . Fmax(hz)
21hz ..... 56hz
24hz ..... 51hz
31hz ..... 67hz