- Sloted Resonator Absorbers
They are decorative low-frequency damped membrane absorbers that not only look great but also filter out damping from the mid and high-frequency spectrum. When corner-mounted,slot-traps treat a range of frequencies starting down at 80Hz, and up to 500Hz. They feature a back layer rigid fiberglass finished with black velvet then covered with a 4mm poplar plywood plate that is available in different wood colors with a semi-gloss finish. They can be used as single or multiple units in front and back corners of your room.