User Manual
Radial Engineering Ltd. J48 Stereo™ User Guide
9
SPECIFICATIONS
Audio circuit type: ..................................................................................... Proprietary analog circuit with low-noise op-amp
Frequency response: ..................................................................................................................................... 20Hz ~ 20KHz
Dynamic range: .......................................................................................................................................................... 109dB
Noise oor: .............................................................................................................................................. -99dB below 0dBu
Equivalent input noise: ............................................................................................................................................ -103dBu
Maximum input: ........................................................................................................................................................ +10dBu
Phase deviation: .....................................................................................................+10º at 20Hz | 0º at 1kHz | -1º at 20kHz
Total harmonic distortion:........................................................................................................................... 0.002% @ -5dBu
Inter-modulation distortion: ........................................................................................................................ 0.003% @ -3dBu
Input impedance: ........................................................................................................................................ 220kΩ - ¼” input
Output impedance: ..................................................................................................................................600Ω - XLR output
Input pad:.....................................................................................................................................................................-15dB
Polarity:.......................................................................................................180º signal polarity reverse - right channel only
Low-cut lter: ..................................................................................................................................................-3 dB @ 80Hz
XLR conguration: ......................................................................................................................... AES standard (pin-2 hot)
Power: ................................................................................................................... 48V phantom - internal switching supply
Construction: ........................................................................................................... 14 gauge steel chassis and outer shell
Finish: ................................................................................................................................................................Powder coat
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
Conditions:.......................................................................................... For use in dry locations only between 5°C and 40°C
Warranty: .................................................................................................................................... Radial 3-year, transferable