Product Details: The composite silencers are designed by combining different noise reduction principles of dissipative and reactive silencers. Due to excellent MF and HF noise reduction effect of the dissipative silencer and outstanding LF and MF noise reduction effect of the reactive silencer, the composite silencers can have good noise reduction effect over a wide frequency range. The composite silencers mainly include dissipative and reactive composite type, dissipative and resonance composite type, reactive and micro-perforated plate composite type, etc. The composite silencers are suitable for various broadband noise sources. Their noise reduction capacity is generally higher than 16dB (A) in the LF part and up to 30-40dB (A) in the HF part.