Setting Attenuation; Load Impedance - Shure KSM44 User Manual

Multiple polar pattern condenser icrophone

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Setting Attenuation

The attenuation switch on the back of the KSM44 reduces the signal level from

the cartridge by 15 dB without altering the frequency response. This can prevent

extremely high SPLs from overloading the microphone. To activate attenuation,

move the switch to the "-15 dB" position. Note: In situations where the high out-

put of the KSM44 might overload the microphone preamplifier of a console or

mixer, use an attenuation pad in the mixer.

A load impedance of at least 1000 Ω is recommended. When used with typical

modern microphone preamplifiers (rated at about 2500 Ω), the KSM44 provides

higher maximum SPL capability and output clipping level. With the -15 dB pad

engaged, the KSM44 can handle up to 156 dB SPL and output +15 dBV into a

5500 ohm or greater load.

Integral Pop Filter

The KSM44 has an integral pop filter which helps reduce wind and breath noise.

An external pop-protection screen or windscreen may be necessary when

close-miking vocalists. The low-frequency cutoff filter may also be effective. See

Figure 3.

FIGURE 3.PS-6 POPPER STOPPER™ POP FILTER

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