What's new

subsonic filter on mains.... (1 Viewer)

A

Anthony_Gomez

this seems counter intuitive, so maybe someone can clear it up for me.

For ported subs, we need a subsoni filter to prevent driver unloading.

...then how do tons and tons of people manage to run ported booksheves/towers without one (just think back to old pro-logic where the mains always had full range signals)?
 

ThomasW

Senior HTF Member
Joined
Nov 6, 1999
Messages
2,282
Personally I think subsonic filters are a waste unless one is using vinyl as a source.

I have boost dialed in at 15Hz (Symetrix 551 EQ) for my big IB. And I use 20Hz boost for my other subs that are EQed with BFD's
 

Greg Yeatts

Second Unit
Joined
Feb 26, 2002
Messages
300
Tony

Thomas big IB would be in a similar situation to a ported box below Fb. In a sealed box the "air spring" created by the sealed box helps keep the cone in control. A ported box unloads below Fb. In an IB, the cone is always unloaded because the enclosure is so large that the air spring principle would not apply.
 

ThomasW

Senior HTF Member
Joined
Nov 6, 1999
Messages
2,282
Tony

I also have the AS-15 sub and a triple PR'ed Stryke cube containing a BP-1503. These have fairly wideband 20Hz boost from Behringer
 
A

Anthony_Gomez

thanks..pretty much trying to find out if the tumult in 130L with dual 2500g 18PR's really need a subsonic filter.
 

Users who are viewing this thread

Latest Articles

Forum statistics

Threads
356,482
Messages
5,113,746
Members
144,099
Latest member
HobbitGolf
Recent bookmarks
0
Top