Midas 502

20 21Quick Start Guide500 SERIES MICROPHONE PREAMPLIFIER 502
Speci cations
Controls
Phantom power 48 V switch
Input gain, mic/line 12 position rotary switch, 0-60 dB knob
Polarity 0/180 degrees switch
Low pass  lter In/out switch, frequency knob
High pass  lter In/out switch, frequency knob
Output trim / line gain trim +/-20 dB knob
Output type (electronic or transformer) Electronic/transformer switch
Input and Output
Input Mono, balanced mic or line
Output Mono, balanced via electronic or transformer
System
Noise
Noise at unity gain -97 dBu (22 Hz - 22 kHz)
Mic EIN noise at +60 dB gain, 150 Ohm source -127dBu (22 Hz - 22 kHz)
CMRR
Unity gain, 1 kHz -70 dB (typical)
+60 dB gain, 1 kHz -100 dB(typical)
Input impedance, 1 kHz 10 kΩ
Frequency Response, Unity Gain
Electronic output 20 Hz - 40 kHz +/- 0.5 dB
Transformer output 20 Hz - 20 kHz +/- 0.5 dB
Distortion, Electronic Output at Unity Gain, 1 kHz
0 dBu <0.005%
+10 dBu <0.005%
+20 dBu <0.01%
Distortion, Transformer Output at Unity Gain, 1 kHz
0 dBu <0.01%
+10 dBu <0.01%
+20 dBu <0.02%
Maximum Input Level, 1 kHz +24 dBu
Maximum Output Level, 1 kHz
Electronic output +26 dBu
Transformer output +21 dBu
Output impedance, 1 kHz 50 Ω
Filters
Low pass 1 kHz to 40 kHz, slope = 12 dB per octave
High pass 10 Hz to 400 Hz, slope = 12 dB per octave
Meters
Input meter 11 segment, -20 dBu to +20 dBu in 4 dB steps
Output Meter 11 segment, -20 dBu to +20 dBu in 4 dB steps
Power Requirements
Voltage +16 V and -16 V, +48 V (phantom power)
Power consumption 100 mA, 3.2 W
Physical
Dimensions (H x W x D) 132 x 38 x 174 mm (5.2 x 1.5 x 6.9")
Weight 0.7 kg (1.5 lbs)