Cardioid Capsule for KM Series Digital Microphone
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The modular KM A / KM D miniature
microphone system is a further development of the successful KM 100
series. The newly developed passive capsule design is available with 8
different directional characteristics, and can be combined modularly as
desired with an analog (KM A) or digital (KM D) output stage in
accordance with the AES 42 standard. The new, considerably smaller
microphone capsules and an extensive program of accessories permit
excellent adaptation of the microphone system to a wide range of
applications.
Through the use of the most up-to-date electronic
components the system offers many electroacoustic and operational
advantages, such as lower self-noise, a wider dynamic range and very
high immunity to electromagnetic interference. The acoustics of the
capsules were taken from the proven KM 100 system.
The KM A
analog output stage with P48 phantom power has a switch for
pre-attenuation of 10 dB. The microphones can thus handle levels of up
to 152 dB (depending on the capsule type). The KM D digital output stage
converts the signal from the capsule directly into a digital signal.
The result is an AES/EBU signal with 24 bits and a large dynamic range.
The integrated digital signal processor (DSP) permits remote control of
the microphones, including the digital gain, pre-attenuation (6 dB, 12
dB or 18 dB) and low-cut filter (0 Hz, 40 Hz, 80 Hz or 160 Hz). An
integrated peak limiter and compressor/limiter with additional de-esser
function prevents any overloading of the audio signal.
The
dimensions (diameter 22 mm, length 93 mm) of the analog and digital
output stages are identical. As a result, all accessories can be used in
combination with both output stages.
Upon request, a mechanical
adapter can be supplied to adapt microphone capsules of the KM 100
system (AK series) to the KM A and KM D output stages.
The
modular solution permits the microphone capsule to be separated from the
output stage by a distance of up to 100 m. The LC 4 microphone cable
with a length of 5 or 10 meters is available as a standard solution.
Alternatively, capsule extensions of different lengths, swivel joints
and stand mounts, etc., can be used for a flexible system setup.
The
capsule heads KK 183, KK 184 or KK 185, together with the appropriate
output stage, are also available as a set, in which case they are
referred to as KM 183 A, KM 183 D, etc.
Features:
-Low-cut: flat, 40, 80, 160 Hz
-Pre-attenuation: 0 , -6, -12, -18 dB
-Gain: 0...63 dB in 1 dB steps, clickless
-Testsignal: 1 kHz, pink noise, white noise
-Sampling rates: 44.1, 48, 88.2, 96, 176.4, 192 kHz
-Parametric compressor/limiter (incl. de-esser function)
-Independent peak limiter avoiding any clipping
-Switch functions: soft muting, phase reverse, signal lights
-Signal lights: red4) and blue LEDs
-System functions, firmware download