Roofing Felt Speaker Stuffing

By the time we get below 300hz the stuffing is basically useless.

Roofing felt speaker stuffing.

Layers of 30 roofing felt that costs 0 17 per square foot thanks to dickason for mentioning this stuff. At 11mm thick it is suitable for damping the walls of a speaker cabinet to change the resonant frequency and q it is also effective at reducing the back wave from the rear of your drivers. 2 1 2 sheet rock screws. 6 heavy zip cord 12 gauge or heavier radio shack has heavy speaker wire which works well 1 pkg.

The sound wave coming off the back of your subwoofer reacts with the air contained in the box. What s in the box. Description our heavy weight recycled wool felt is manufactured from 100 recycled fibres. Glass fibre insulation material was irritatingly used for much of the 60s while polyester or acrylic fibre similar to that found in cheap sleeping bags duvets or pillows gained popularity in the 70s either inserted loose or stapled.

50 50 wool polyester blend pillow found at walmart 4 x 4 x 3 8 or thicker carpet rebond. In most regions it is better than the. Full range speakers have acoustic wool stuffed into the box to remove energy due to friction as the air moves through the fibres. Polyester fiber stuffing slows down sound waves inside the box making the subwoofer perform as if the box were bigger.

The effectiveness of this approach diminishes as frequency is reduced. Thick felt of the kind that used to be laid under carpets was a popular choice in the early days of hifi.