Eureka Microphone Preamplifier user manual Technical, Eureka Specifications, Compressor

4 TECHNICAL

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)
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