How does a sub break in???
11-01-2005, 12:00 AM
#1
Hey folks, i realize this is kinda a debated topic as far as whether it's useful/needed or not. I don't really wanna debate whether it's useful or not, but i'm more so interested, assuming it is useful, what exactly it does?
The common idea seems to play a subwoofer at lower volumes for a while before cranking it up. What does this do for the sub?
The common idea seems to play a subwoofer at lower volumes for a while before cranking it up. What does this do for the sub?
[img]graemlins/jawdrop.gif[/img] 
11-01-2005, 07:43 AM
#5
Guest
Posts: n/a
the compliance of the suspension, ie surround and spider(s) will change as will practically every measuable thiel small parmeter. on the average woofer 15 volts ac or so at the speakers fs for 8-10 hours will break the woofer in 90% or so. having said that some woofers with more aggressive suspensions will require longer,alpine typex and kicker l7's come to mind
11-01-2005, 08:12 AM
#6
I think about all you are going to break in is the spider... most surrounds are not going to gain much compliance as they are made of flexable materials with high elasticity.....
If you ask me breaking in is only usefull if you are going to measure T/S yourself, or if you want em broken in before you start testing boxes.....
Typically I think most of the break in is going to occure in the first 5min of a good pounding anyway.... but some subs may loose more then others.... seems to me also, that subs using stiff spiders will have the greatest change and take the longest to break in..... Ive talked to SPL guys who lost 1-4db over a season while their subs were used from drops in fs...
meh, for daily its not really needed unless you don't have the power to break em in otherwise...
Im not sure why defro would want to use a signal matching the drivers fs... that is where the least amount of cone movment is going down.... makes more sense to me to use 10hz or something.... [img]graemlins/dunno.gif[/img]
[ November 01, 2005, 09:04 PM: Message edited by: Haunz ]
If you ask me breaking in is only usefull if you are going to measure T/S yourself, or if you want em broken in before you start testing boxes.....
Typically I think most of the break in is going to occure in the first 5min of a good pounding anyway.... but some subs may loose more then others.... seems to me also, that subs using stiff spiders will have the greatest change and take the longest to break in..... Ive talked to SPL guys who lost 1-4db over a season while their subs were used from drops in fs...
meh, for daily its not really needed unless you don't have the power to break em in otherwise...
Im not sure why defro would want to use a signal matching the drivers fs... that is where the least amount of cone movment is going down.... makes more sense to me to use 10hz or something.... [img]graemlins/dunno.gif[/img]
[ November 01, 2005, 09:04 PM: Message edited by: Haunz ]
11-01-2005, 09:25 AM
#8
500 Watt CAFz'r
Join Date: Apr 2005
Posts: 758
^oh **** nice sig.... [img]graemlins/laugh.gif[/img] I never broke in my 10 inch L5's at the penticton show and hit a 142.4..... but with my L7's new outta box was a 140ish now it's uptowards 145.... so I consider it usefull
[ November 01, 2005, 10:39 AM: Message edited by: BigBubba ]
[ November 01, 2005, 10:39 AM: Message edited by: BigBubba ]
11-01-2005, 09:36 AM
#10
Originally posted by defro13:
some guy named vance dickason recommends using the fs, but that does he know
some guy named vance dickason recommends using the fs, but that does he know
Personally I think listening to a speaker woofing at 20-30hz for 10hr might get a little annoying... [img]graemlins/laugh.gif[/img]
Originally posted by BigBubba:
I never broke in my 10 inch L5's at the penticton show and hit a 142.4..... but with my L7's new outta box was a 140ish now it's uptowards 145.... so I consider it usefull
I never broke in my 10 inch L5's at the penticton show and hit a 142.4..... but with my L7's new outta box was a 140ish now it's uptowards 145.... so I consider it usefull
[ November 01, 2005, 11:01 AM: Message edited by: Haunz ]
