18 PERCEPTION 820 TUBE
7 Specifications
7.1 Microphone
7.2 Remote Control Unit
Type: 1-inch dual-diaphragm, true condenser pressure-
gradient microphone
Polar patterns: omnidirectional, cardioid, figure eight plus six
intermediate patterns (selectable on Remote
Control Unit)
Open-circuit sensitivity
at 1kHz (cardioid): 20 mV/Pa (-34 dBV ±3 dB)
Frequency range: 20 Hz to 20 kHz (see frequency response graphs)
Impedance: ≤ 200 ohms
Recommended load impedance: ≥ 1000 ohms
Equivalent noise level
to IEC 60268-4 (A-weighted): 16 dB-A
Signal/noise ratio re 1 Pa (A-weighted): 78 dB
Max. SPL: 135 / 155 dB SPL (0 / -20 dB)
Preattenuation pad: -20 dB (switchable on Remote Control Unit)
Bass cut filter slope: 12 dB/octave, 80 Hz
(switchable on Remote Control Unit)
Environment: temperature: -10°C to +60°C
R.H.: 80% (+25°C)
Powering: via Remote Control Unit only
Connector: dedicated 7-pin male XLR
Dimensions: 53 dia. x 212 mm high / 2 x 8.3 in.
Net weight: 870 g / 1.9 lbs.
Audio/control input: dedicated 7-pin female XLR connector
Audio output: standard 3-pin male XLR connector,
balanced, pin 2 hot
Polar pattern selector: 9-position detented rotary switch
Bass cut filter switch: 2-position toggle switch
Preattenuation switch: 2-position toggle switch
Power voltage: 210-240 VAC or 110-120 VAC, selectable
Primary fuse: 125 mA / 250 V slow-blow
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