User guide

Definitive
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Design
www.greatriverelectronics.com
Specifications
Inputs
Microphone
: 300 / 1200 ohm input (via front panel impedance selector)
3 Pin balanced XLR connector on rear panel (XLR pin 2 is hot)
Hi-Z or DI
: > 1.2 Megohms
1/4" phone jack on front panel
Outputs
Balanced: XLR 3 Pin connector on rear panel (XLR pin 2 is hot)
Unbalanced
: 1/4" -10dBV, 1/4" TRS Insert Patch Jack Maximum output: +18 dBm
Controls
Input Gain: 12 position gold-plated switch, independent per channel +5dB to +60dB (5dB steps)
Output Level
: continuous control, independent per channel -25dB to +10dB
Output Transformer Loading In/Out
: gold-plated relay, independent per channel w/LED
Input Impedance Selector 300/1200 ohm
: gold-plated relay, independent per channel w/LED
Phantom power
: +48 Volts DC, independent per channel w/LED
Output signal polarity
: gold-plated relay, independent per channel w/LED
Metering
: 6 LED ladder for input, 6 LED ladder for output
Power
: switch w/LED
Performance
Overall Gain: -20dB to +70dB, fully adjustable
Noise
: EIN <-125dbm with 150 ohm source at 40db gain.
Distortion @ -40dbm input, Gain set at 40db:
20 Hz 0.2
5
%
100
Hz
0.06%
1 kHz 0.016%
10
kHz
0.014%
20kHz 0.014%
Freq Response, 40db gain, output loaded:
20 Hz -0.07
dB
1 kHz 0.00 dB
20
kHz
-0.27
dB
35
kHz
-1.30 dB
50
kHz
-3.19 dB
75
kHz
-10.5 dB
Freq Response, 40db gain, output unloaded
:
20 Hz 0.19 dB
1 kHz 0.00
dB
20
kHz
1.29 dB
35
kHz
3.49
dB
50
kHz
5.48
dB
75
kHz
0.59
dB
Size
MP-2NV: 1.75" high x 19" wide x 10" depth, weight: 11 lbs.
ME-1NV: 1.75" high x 8.6" wide x 10" depth, weight: 6.5 lbs.
Power
110/220 Volts AC @ 50/60 Hz (rear panel selectable) 1 amp, IEC connector