Should I be afraid of standing waves? (1 Viewer)

[tom_furman]

My 18" tube is cut to a height of 56". The only thing I have inside to break up any standing waves in a layer of polyfill and my amp that I mounted flush (it sticks into the tube about 5")

I'm concerned that such a tall height will produce standing waves even with my amp mounted internally.

1. Should I be worried, and are there any things I can do to prevent them?

 

[Shawn Solar]

I believe the formula to find the mode between two parallel walls is 565/x=first room mode. or in your case the tube.

565/5.5(your tube length)=102.7hz. Not sure if this a problem though. thick insulation on the top and bottom of your tube should suffice.

 

[Joe Tilley]

Tom, I don't think you should have anything to worrie about. I just finished a 270 liter sono which is also 56" long but mine is 20" in diameter. If you line the walls with a single layer of fiber fill or acoustic foam it will control standing waves.
I have the bottom half of mine lined with 2&1/2" acoustic foam & about 1lb of poly fill in the top half & it sounds awesome.