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  2. Duct silencer for supply ventilation noise countermeasures LF type M type (Sasakura Co., Ltd.)
Duct silencer for supply ventilation noise countermeasures LF type M type-LF-3M
Duct silencer for supply ventilation noise countermeasures LF type M type-Sasakura Co., Ltd.

Duct silencer for supply ventilation noise countermeasures LF type M type
Sasakura Co., Ltd.

About This Product

■Suitable for large air volume with low pressure loss

By using a straight sound-absorbing splitter, the pressure loss is extremely small, so it is usually possible to select a silencer that matches the duct dimensions within the allowable pressure loss.

■Guarantees excellent sound reduction performance

Sound reduction performance has been confirmed as a dynamic insertion loss value through acoustic wind tunnel tests and the large-scale Sasakura Acoustics Laboratory, which consists of two reverberation chambers, and we guarantee excellent sound reduction performance. All functions of the Sasakura Duct Silencer have been measured at the Sasakura Acoustic Laboratory to ensure the following acoustic performance and special airflow.

■Self noise value

This is the secondary sound (wind noise) generated within the silencer due to airflow, and is expressed in sound power level.

■Dynamic insertion loss value

It is an accurate method of expressing sound reduction performance when airflow is involved, and it shows how much the sound pressure level at the sound receiving point before installing the silencer is reduced by installing the silencer.

■Pressure loss value

It represents the static pressure difference before and after the silencer due to air flow. Improved acoustic performance in the low frequency range. It efficiently reduces the low frequency sound range, which tends to be a problem with general noise reduction measures.

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    Duct silencer for supply ventilation noise countermeasures LF type M type

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4 Models of Duct silencer for supply ventilation noise countermeasures LF type M type

Click on the part number for more information about each product

Image Part Number Price (excluding tax) Sound reduction performance Silencer inlet flow velocity (m/s) Sound reduction performance Octave band center frequency Pressure drop (Pa) Silencer inlet flow rate PWL correction value based on inlet area Silencer inlet area Self noise level Octave band center frequency
Duct silencer for supply ventilation noise countermeasures LF type M type-Part Number-LF-3M

LF-3M

Available upon quote

-9~+9

63Hz 5~7dB, 125Hz 7~8dB, 250Hz 15~18dB, 500Hz 18~20dB, 1,000Hz 17~18dB, 2,000Hz 12~13dB, etc.

1m/s 2, 2m/s 8, 3m/s 17, 4m/s 30, 5m/s 46, 6m/s 67, 7m/s 91, 8m/s 118, etc.

0.125m2 -9dB, 0.25m2 -6dB, 0.5m2 -3, 1m2 0, 2m2 +3, 4m2 +6, 8m2 +9, 16m2 +12, 32m2 +15

63Hz 46~58dB, 125Hz 35~53dB, 250Hz 44~59dB, 500Hz 36~59dB, 1,000Hz 41~59dB, 2,000Hz 38~61dB, etc.

Duct silencer for supply ventilation noise countermeasures LF type M type-Part Number-LF-5M

LF-5M

Available upon quote

-9~+9

63Hz 9~12dB, 125Hz 13~15dB, 250Hz 23~27B, 500Hz 28~31dB, 1,000Hz 27~30dB, 2,000Hz 16~17dB, etc.

1m/s 2, 2m/s 8, 3m/s 18, 4m/s 32, 5m/s 50, 6m/s 71, 7m/s 97, 8m/s 127, etc.

0.125m2 -9dB, 0.25m2 -6dB, 0.5m2 -3, 1m2 0, 2m2 +3, 4m2 +6, 8m2 +9, 16m2 +12, 32m2 +15

63Hz 46~58dB, 125Hz 35~53dB, 250Hz 44~59dB, 500Hz 36~59dB, 1,000Hz 41~59dB, 2,000Hz 38~61dB, etc.

Duct silencer for supply ventilation noise countermeasures LF type M type-Part Number-LF-7M

LF-7M

Available upon quote

-9~+9

63Hz 13~15dB, 125Hz 15~19dB, 250Hz 29~33dB, 500Hz 39~43dB, 1,000Hz 38~39dB, 2,000Hz 21~22dB, etc.

1m/s 3, 2m/s 9, 3m/s 19, 4m/s 33, 5m/s 52, 6m/s 75, 7m/s 102, 8m/s 132, etc.

0.125m2 -9dB, 0.25m2 -6dB, 0.5m2 -3, 1m2 0, 2m2 +3, 4m2 +6, 8m2 +9, 16m2 +12, 32m2 +15

63Hz 46~58dB, 125Hz 35~53dB, 250Hz 44~59dB, 500Hz 36~59dB, 1,000Hz 41~59dB, 2,000Hz 38~61dB, etc.

Duct silencer for supply ventilation noise countermeasures LF type M type-Part Number-LF-10M

LF-10M

Available upon quote

-9~+9

63Hz 16~20dB, 125Hz 21~25dB, 250Hz 39~42dB, 500Hz 51~52dB, 1,000Hz 50~51dB, 2,000Hz 26~28dB, etc.

1m/s 3, 2m/s 10, 3m/s 22, 4m/s 38, 5m/s 59, 6m/s 85, 7m/s 116, 8m/s 151, etc.

0.125m2 -9dB, 0.25m2 -6dB, 0.5m2 -3, 1m2 0, 2m2 +3, 4m2 +6, 8m2 +9, 16m2 +12, 32m2 +15

63Hz 46~58dB, 125Hz 35~53dB, 250Hz 44~59dB, 500Hz 36~59dB, 1,000Hz 41~59dB, 2,000Hz 38~61dB, etc.

Click on the part number for more information about each product

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Sasakura Co., Ltd.

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