Widespread and rational use of reinforcing ribs in weak links of loudspeakers. Sufficient glue should be used at the joints on all sides of the box, not less. Thick triangular wood or wooden sticks should be glued and fixed with wooden screws. The sound pressure level on the back of the bass speaker is high, which is easy to induce box sound. The material is to stick a round hard board on the back plate for reinforcement, which is relatively narrow. Due to the vertical and horizontal contrast of the plate, the strength and rigidity become worse, the resonance point becomes lower, and the sound box or box will gradually resonate.
2. Add an appropriate amount of ultra-fine glass wool, slag wool, fiber-sprayed cotton, vacuum cotton, foam sponge, cotton wool, cotton paper, soft toilet paper and other sound-absorbing materials into the box to absorb sound energy and control the Q value of the speaker. In a closed box, you need to fill the whole box. Stick the sound-absorbing material with three fingers width on the front wall and the left wall of the inverter box, and appropriately increase or decrease the monitoring, just to suppress the resonance peak. On the transmission line.