Listen SoundConnect 2, User Manual

Page: 23 / 27

SoundConnect 2
TM
Manual Specifications 17
Specifications
INPUTS
Line Input
Connector 2 - 1/4” TRS Phone Jack, Balanced or Single Ended
Input Impedance 200 k
Ω
in parallel with < 500 pF
CMRR at 1 kHz > 65 dB at 0 dB gain; > 100d B at +40 dB gain
Maximum input voltage before damage 113 Vp AC @ -20 dB gain, differential
Mic Input
Connector
2 - BNC Connector, compatible with SCM microphones and
accelerometers
Input Impedance (bias off)
200 k
Ω
in parallel with < 500 pF
Bias Supported Constant Voltage (SCM), Constant Current (IEPE), or none
Resistive Feed 7.5 k
Ω
or 2.2 k
Ω,
+ 1%, selectable via front panel or USB
Constant Voltage / Electret Bias,
Open Circuit Voltage
Preset to +10 VDC using 7.5 kOhm setting
(Each channel internally adjustable from 100 mV to 12 VDC)
Constant Current / IEPE Bias, Open
Circuit Voltage +22 VDC, +5%; Continuous Output Current: 4 mA and 10 mA,
selections for each channel via front panel or USB
Externally Polarized Mic Input
Connector
2 - Lemo 1B series, type 307 receptacle, Compatible with pre-polarized
and condenser microphones
Bias Voltage +200 VDC, +0.5%, Enabled or disabled via front panel or USB
Bias noise
< 100
μ
V, unweighted, 20 kHz BW, Spectra < 1
μ
V, 3.16 Hz BW
Output Impedance
20 M
Ω
Preamplifier Supply Voltage
+15 VDC,
Maximum Supply Current: 25 mA
SIGNAL AMPLIFICATION
Frequency Response -3 dB, < 0.8 Hz to > 140 kHz
Flatness 20 Hz - 20 kHz ±0.05 dB, No filters engaged
Gain -20 dB to +40 dB in 10 dB steps
Tolerance ±0.1 dB from -20 to +20 dB; ±0.2 dB +30 dB & +40 dB
SNR
>120 dB @ 0 dB Gain; > 90 dB @ -20 dB Gain; > 110 dB @ +20 dB;
> 90 dB @ +40 dB
(Noise - RTI, 20 kHz BW unweighted, all filters off, output gain +6 dB)