Post by HST on Jun 3, 2016 2:09:59 GMT
I recently moved and now have a somewhat irregular basement room to use as a listening space. Average measurements are 7.5 high, 16.5 ft wide and 20 ft in length. Being a finished basement, the floor is concrete with wall-to-wall carpeting. Outside walls are cast concrete built out with studded walls and sheetrock. The result (before treatment) is the dreaded somewhat "dead" room with a boomy bass (major peaks at 35, and 65-100 Hz).
Obstacles such as doorways, a hallway and a built-in storage cupboard, etc. result in only one "normal" right-angle corner in which to install a corner trap. Wall space to install membrane traps without making the room seem claustrophobic is also a bit limited, BUT there are two window wells with large 46" x 46" windows, representing roughly the same surface area as two 2' x 8' membrane traps.
The window recess is a good 6 inches, so this presents an opportunity to build two 4 to 6 inch deep traps that won't intrude into the room.
My question: with nominal dimensions of 46" x 46" x 4" deep, what would be the ideal material to use for the membrane surface that would result in optimal absorption at 80 - 100 Hz.? The construction plans for the 2' x 4' traps call for 1/4" plywood and are said to be effective from 80 - 300 Hz. Would this stay the same, or is there an alternate material that should be considered given that I have and inch or two of extra depth to work with?
thanks for reading and commenting
Obstacles such as doorways, a hallway and a built-in storage cupboard, etc. result in only one "normal" right-angle corner in which to install a corner trap. Wall space to install membrane traps without making the room seem claustrophobic is also a bit limited, BUT there are two window wells with large 46" x 46" windows, representing roughly the same surface area as two 2' x 8' membrane traps.
The window recess is a good 6 inches, so this presents an opportunity to build two 4 to 6 inch deep traps that won't intrude into the room.
My question: with nominal dimensions of 46" x 46" x 4" deep, what would be the ideal material to use for the membrane surface that would result in optimal absorption at 80 - 100 Hz.? The construction plans for the 2' x 4' traps call for 1/4" plywood and are said to be effective from 80 - 300 Hz. Would this stay the same, or is there an alternate material that should be considered given that I have and inch or two of extra depth to work with?
thanks for reading and commenting
