Eureka Microphone Preamplifier - Manual (Page 22)

4 TECHNICAL
22
EUREKA SPECIFICATIONS
Channels ....................................................................................................ONE
Dynamic Range.....................................................................................>115dB
Headroom .............................................................................................+22dBu
Frequency Response .................................................................10Hz to 50kHz
Internal Operating Level................................................................. 0dBu = 0dB
Microphone /Instrument Preamplifier
Gain........................................................................................ + 12dB to +52dB
Noise Floor .....................................................................-112dBu (+12dB gain)
EIN .........................................................................................................-127dB
THD + Noise(0% Saturation) .............................................................. <0.005%
THD + Noise (Full Saturation)................................................................. <0.5%
Microphone Input Connector...................................................................... XLR
Mic Input Impedance (selectable) ...................2.5K, 1.5K, 600, 150, 50 Ohms
Instrument Input Connector .....................................................................¼” TS
Instrument Input Impedance ...........................................................1 Meg Ohm
Send Connector ............................................. 1/4” TRS Balanced/Unbalanced
Send Output Impedance .....................................................................51 Ohms
Return Connector............................................ 1/4”TRS Balanced/Unbalanced
Return Input Impedance................................................................... 10K Ohms
Metering (3-LED)................................................................. -20dBu, 0dBu, Clip
Line input (switchable) ............................. ¼” TRS, 10k Ohm Input Impedance
Phantom Power (switchable) ......................................+48V (Pin 1, Pin 2 XLR)
Pad (switchable)............................................................................... 0dB/-20dB
Phase (switchable)................................................................................. 0, 180º
Hi-pass Filter (switchable)....................................................-3dB shelf at 80Hz
Compressor
Threshold (variable) ............................................................. -40dBu to +20dBu
Ratio (variable)..........................................................................1-10 (1:1 – 7:1)
Attack (variable) ............................................................................ 0.1 – 200ms
Release (variable) ............................................................................. 0.05 – 3 S
Output Attenuation/Gain........................................................... -20dB to +20dB
High Pass Sidechain Filter (variable).........................................10Hz to 10kHz
Metering ......................................... Analog VU (Gain Reduction/Output Level)