Operation; Proximity Effect; Power Requirements - Shure KSM9HS User Manual

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Operation

Directional microphones progressively boost bass frequencies as the microphone is placed closer

to the source. This phenomenon, known as proximity effect, can be used to create a warmer, more

powerful sound. However, it usually requires the vocalist to maintain a consistent distance from the

microphone in order to avoid changing the low-frequency response.

The dual-diaphragm design of the KSM9HS helps to control and minimize proximity effect, resulting in

a more uniform low-frequency response. This allows the performer to move closer or further from the

microphone with minimal changes in sound quality.

Selecting a Polar Pattern

Hypercardioid: Use the hypercardioid setting to avoid feedback and

achieve maximum isolation in loud environments. This pickup pattern

is highly directional, with the greatest sensitivity occurring at the front

of the microphone and maximum off-axis rejection occurring at 110

degrees toward each side.

Subcardioid: Use the subcardioid setting to capture more room

characteristics and extract detail in quiet environments. This pickup

pattern is directional, but much wider than the hypercardioid setting.

The greatest sensitivity occurs at the front of the microphone, while

maximum rejection occurs at 180 degrees toward the rear of the

microphone.

This microphone requires phantom power and performs best with a 48 V DC supply (IEC-61938),

but it can operate with supplies as low as 11 V DC. Most modern mixers provide phantom power and

require the use of a balanced microphone cable: XLR-to-XLR or XLR-to-TRS.

Load Impedance

Maximum SPL capability, output clipping level, and dynamic range vary with the input load imped-

ance of the preamplifier to which the microphone is connected. Shure recommends a minimum input

load impedance of 1000 Ohms. Most modern microphone preamplifiers meet this requirement. Higher

impedance results in better performance for these specifications.

Integral Pop Filter

The microphone grille consists of 3 separate mesh layers that act as an integral pop filter. This helps

reduce wind and breath noise. Depending on the performer, an external pop-protection screen or

windscreen may be necessary when close-miking vocalists.

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