Bass Traps
Bass traps for the low frequencies a 4" panel can't reach. Diaphragm Bass Traps are 9" or 12" deep, work from 60 Hz and up, and keep absorbing through the mids and highs. Membrane Bass Traps are tuned to 45, 60, 70 or 85 Hz for specific low frequency problems in the room. Custom made in 50 fabric colors.
Diaphragm and Membrane Bass Traps
Bass builds up in the corners and along the walls of a small room, and a 4" porous panel falls off quickly below 100 Hz. We build two kinds of bass trap for the range below that, and they do different jobs. All ranges below are predicted.
Diaphragm Bass Traps
A fabric face over a deep insulation fill, with a single-piece 1/4" plywood diaphragm on the back. Our 9" deep and 12" deep traps work from about 80 Hz up on 2 ft wide traps and about 60 Hz up on 3 ft and wider, and they keep absorbing through the mids and highs.
Membrane Bass Traps
A limp mass membrane over a sealed plywood cavity. The weight of the membrane and the depth of the air behind it set one frequency, 45, 60, 70 or 85 Hz. The trap absorbs most around that tuning and much less above and below it.
Which One Do You Need?
For general low end control, start with diaphragm traps. If a room measurement shows one note ringing longer than the rest, add a membrane trap tuned to it.
Where They Go
- Corners: Where bass pressure is highest
- Back Wall: Behind the listening position
- Side Walls: Behind you, past the first reflections
Low End Problems in a Studio or Theater?
Send us the room through our free room review form or call (818) 217-1653. Reach out to us for design assistance.
Questions
What is the difference between a diaphragm and a membrane bass trap?
A diaphragm trap absorbs a wide range, from about 80 Hz up on 2 ft wide traps and 60 Hz up on 3 ft and wider, and keeps absorbing through the highs. A membrane trap is tuned to one frequency and absorbs most around it.
Which membrane tuning do I need?
The one that matches the note that rings longest in your room. A room measurement shows it. The tuning is set by the box and can't be changed after it is built, so measure first or reach out to us.
Can I use both?
Yes. A membrane trap can sit behind or beside a diaphragm trap, so the room gets broad control plus extra absorption at the problem note.
Do bass traps need to go in the corners?
Corners are where bass pressure is highest, so they are the first place to treat. The back wall and the side walls behind the listening position come next.
How do they mount?
Diaphragm traps ship with Z-bar cleats on spacer strips that keep the diaphragm clear of the wall, or stand on optional floor legs. Most membrane traps stand on their own, with L brackets, cleats, legs or casters available.