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Radial J48TM Specifications

Test Conditions
(all tests performed on an Audio Precision System-2622 Cascade+ DSP
Frequency
(for FFT graph):
1kHz
Level: 0dBU (774.6 mV RMS)
Source Impedence: 600
Load: 1,200 Ohms throuogh 3ft of twisted pair cable having 100 pfd (.0001µF) of total capacity
Bandwidth: 22Hz - 22KHz not wighted



J48 Specifications
Audio circuit type: Proprietary analog circuit with low-noise op-amp
Frequency range: 10Hz ~ 40kHz
Frequency response: +0dB /-0.5dB 20Hz ~ 20kHz
Signal to noise: 108.4dB @ maximum output
Noise floor: -140dB
Maximum input: +9 Volts
Phase deviation: +10º at 20Hz  |  0º at 1kHz  |  0º at 20kHz
Total harmonic distortion: 0.001%@20Hz  |  0.001%@1kHz  |  0.002%@10kHz
Inter-modulation: 0.002% @ +0dB
Inputs: ¼" jack for INPUT - ¼" jack for THRU
Merge function: Stereo to mono mix using the IN and THRU jacks for left and right
Input impedance: 220kΩ at the ¼" INPUT jack
Input pad: -15dB
Output impedance: 200Ω - Balanced XLR-M connector
Polarity: 180º reverse switch
Filter: High-pass filter -3dB@80Hz (Low-cut)
XLR configuration: AES standard – pin-1 ground, pin-2 hot
Power: 48V phantom - proprietary digital switching
Ground lift: LIFT switch - XLR out pin-1
Construction: 14 gauge steel chassis and outer shell, baked enamel finish
Size: 3.3" x 5.0" x 2" (84 x 127 x 48mm)
Weight: 1.55 lb (720 g)
FCC approval: Complies with section 15 of the FCC Rules
Warranty: Radial 3-year, transferable



J48 Frequency Response



J48 Phase Response


J48 THD vs Frequency


J48 Fast Forier Transform Noise