Manual sound box/acoustic chamber
Model NO.: ST-SG7070Soundproof Volume Outer environment noise pressure level:80dB(A)inside noise···
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Acoustic Chamber
25dBA acoustic chamber/soundproof box/sound box
Model NO.: ST-SG2230Soundproof Volume Outer environment noise pressure level:80dB(A)inside noise···
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acoustic chamber/soundproof box/anechoic box
Model NO.: ST-SG7560Soundproof Volume Outer environment noise pressure level:nnoutside 80dB(A) i···
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