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Printed in U.S.A. Copyright © 2001, Jensen Transformers, Inc.
8
Section 3 - Specifications
3.1 Electrical Specifications
3.1.1 Frequency Response
(150 Ohm source, 1500 Ohm preamp load at isolated output)
High Frequency -3dB Cutoff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105kHz
Low Frequency -3dB Cutoff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8Hz
20Hz Response re: 1kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.09dB
20kHz Response re: 1kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.10dB
3.1.2 Level Handling and Distortion
Maximum 20Hz Input Level at 1% THD . . . . . . . . . . . . . . . . . . . . . . . . . . +2dBu (0.975V)
Maximum 50Hz Input Level at 1% THD . . . . . . . . . . . . . . . . . . . . . . . . . +10dBu (2.449V)
Total Harmonic Distortion at 20Hz and -20dBu (typical) . . . . . . . . . . . . . . . . . . . . . 0.035%
Total Harmonic Distortion at 1kHz and -20dBu (typical) . . . . . . . . . . . . . . . . . . . . <0.001%
3.1.3 Input Impedance
Input Impedance with no preamp load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.10k Ohms
Input Impedance with 1500 Ohm preamp load . . . . . . . . . . . . . . . . . . . . . . . . . . 1.08 Ohms
3.1.4 Losses
Output with 1500 Ohm preamp load referenced to Input . . . . . . . . . . . . . . . . . . . . -0.82dB
3.1.5 Common Mode Rejection Ratio
60Hz CMRR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120dB
3kHz CMRR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90dB
3.1.6 Phantom Power Requirements
Nominal Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Volts
Maximum Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Volts
Nominal Phantom Current (Total of 8 Channels - 48 Volts) . . . . . . . . . . . . . . 53 milliamps
Maximum Phantom Power Current (All 8 Channels Shorted - 56 Volts) . . . . 125 milliamps