Can someone explain to me what a Rumble Filter / Bass Boost does to a woofer?

AhsanR

Stunt Coordinator
Joined
Jan 18, 2003
Messages
207
I was wondering if someone could please explain to me in layman's terms what a rumble filter at 35hz and 28hz would do to a subwoofer.

Would this be less than ideal for home theater applications where the main goal is to replay things with deep bass below 20hz?
 

Owen Bartley

Second Unit
Joined
Nov 11, 2002
Messages
487
I'm no expert, but I'd think a rumble filter at 28 or 35Hz would be pretty counterproductive in a subwoofer application. Generally, they are applied (I think) to protect the driver from overexcursion at the very low frequencies, and are basically a bit of equalization built in to roll off response below the selected point.

A rumble filter at 35Hz would start to rob you of a lot of good usable output.

A bass boost is pretty much the opposite, a built in boost in EQ applied to the selected frequency. I would think it would make more sense to see a bass boost at 28 or 35Hz, and a rumble filter kick in somewhere below 20Hz, depending on the driver you're using.

It might help if you mention what amp & driver you're thinking about using, maybe someone will be familiar with it.
 

AhsanR

Stunt Coordinator
Joined
Jan 18, 2003
Messages
207
I'm gonna go buy either a bash amp from Oaudio (they have a variable eq), or the behringer at Parts Express. Your suggestions?
 

Mattak

Stunt Coordinator
Joined
Dec 15, 2003
Messages
247
Which behringer? A europower? They have filters but they're defeatable via dip switch.
 

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