General Description

This filter rolls off low audio frequencies to reduce 60 Hz electrical hum, low-frequency wind noise, air conditioner noise, or stand-and floor-transmitted low-frequency vibrations.

When loaded with a low-impedance microphone input (800 ohms or more), the rolloff is 12 dB per octave below 100 Hz. When loaded with 150 ohms, the rolloff is 3 dB at 100 Hz. The output is flat above the rolloff point (with a maximum loss of 0.5 dB at 1 kHz).

Specifications

Frequency Response

Flat above rolloff point; -0.5 dB maximum at 1 kHz

Impedance

EIA rated at 150 Ω

Distortion

2.5% maximum (100 mV, open circuit voltage)

Connectors

Input XLR, female
Output XLR, male

Housing

Full magnetic shield, steel with gray enamel finish

Dimensions

19 mm (.75in. diameter; 114 mm (4.5in. long

TYPICAL FREQUENCY RESPONSE