JC-GB2112 is a manual soundproof box, which is made of sheet metal welded box with built-in multi-layer shock absorption, sound insulation and sound absorbing materials. Its working size is relatively large, which can provide audio test for larger equipment. Excellent low noise test environment, which provides sound insulation detection environment for product noise inspection. Sound effects such as every speaker: outdoor noise is less than equal to 80dB , interior noise can be achieved less than 40dB , sound insulation product testing to meet the needs of many businesses. Also, manual soundproof boxes do not require electrical equipment.
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