D&R Mic-Amp User Manual - page 5
MICROPHONE INPUT
The MIC-AMP has two separate microphone inputs, each on an XLR connector.
WIRING DIAGRAM FOR IN/OUTPUT CONNECTORS
INPUTS
XLR female
pin 2
= in phase
pin 3
= out of phase
pin 1
= ground
OUTPUTS
XLR male
pin 2
= in phase
pin 3
= out of phase
pin 1
= ground
The MIC-AMP has two separate, low impedance, ground compensated outputs on a nominal operating level
of -10 dB and a maximum output level of +22 dBu.
SPECIFICATIONS
Inputs
stereo jack / XLR female 6,25 mm / 3pin XLR female balanced
impedance
2 kOhm
max input level
+ 3 dBu
CMRR
> 62 dB at 50 Hz
> 70 dB at 1 kHz
> 66 dB at 10 kHz
Output:
stereo jack / XLR male 6,25 mm / 3 pin XLR male ground compensated
impedance
100 Ohm
nom. level
- 7.8 dBu (-10 dBV)
max. level
+ 23 dBu
OVERALL
THD at:
O dB / 100 Hz
0,012%
O dB / 1 kHz
below noise level
O dB / 10 kHz
below noise level
Gain min.
+ 20 dB / max. + 60 dB
Gain control range:
40 dB
S/N-ratio (gain max.) - 129,0 dBr (A-weighted)
Frequency-response: - 3 dB at 2 Hz, - 3 dB at 100 kHz
Phantome active after: 8 sec. Vph > 42 V (phantome led is red)
Normal led on at: - 7,8 dBm (- 10 dBV) (nom. level)
Clip led on at:
+18 dBu
Power requirements: 115volt - 230 volt AC 50/60 Hz
Power consumption: 3VA
Fuse
163 mA slow
Storage temperature - 10C to + 65C
Operating temperature + 3C to + 40C
manual page 5