How much gain below 20hz

[TankTop5]

I have heard some people recommend up to 20db of gain below 20hz. I watch movies around 75db and I have dual HSU VTF-TN1’s. Thinking about giving it a shot with gain starting around 25hz and rising quickly to 20db gain at 20hz and below. Room is 800 ft.².

anyone have any thoughts on doing this?

 

[shadyJ]

That seems pretty nuts. If you want some more low-end oomph, I can see goosing up the range below 30Hz by a few dB. That should do the trick. 20dB of boost in infrasonic ranges is crazy. I guess you could try it. The problem is, you probably listen at a louder level than 75dB, and, while your subs do have a nice amount of headroom in deep bass, they don't have infinite headroom, and a 20dB boost below 20Hz is asking a lot of any sub system.

 

[m. zillch]

Content below 20Hz is called infrasonic for a reason.
- if reproduced at the accurate, true level experienced in even the most expensive/deluxe commercial theaters you won't hear/experience a thing
- no commercial subwoofers sold to theaters can reproduce it either
- the professional sound mixers who made the move did not hear/experience it nor intend you to.

What's next? Will people try to get ultraviolet light out of their video screens? It's like that.