Halo JC3JR
FEATURES:
•Circuitry designed by legendary John Curl
•Circuit board layout by Carl Thompson
•Cartridge options for 47k Ω MM and MC/MI
•Variable MC impedance adjustment of 50-550 ohms
•Gain select for 40 dB/50 dB/60 dB unbalanced (46 dB/56 dB/66 dB balanced)
•Balanced and unbalanced outputs
•Mono switch can improve sound of mono & older LPs
•Convenient auto turn-on by 12V trigger
•RIAA accurate to within 0.2 dB
•Incredible S/N up to 94 dB and THD less than 0.02%
•Vishay-Dale resistors in the audio path
•Aluminum shield separates power supply and audio circuits
•Shielded toroid power transformer
•High speed-soft recovery bridge rectifiers and common mode inductors
•Vampire brand 24k gold-plated RCA jacks
•Neutrik brand locking balanced XLR outputs connectors
•Compact 1U chassis (2.5" high with feet)
•Available in silver or black
Technical Specifications:-
Frequency Response:
20-20Khz, +/- 0.2dB
Total Harmonic Distortion:
< 0.02% at 1 kHz
Signal to Noise Ratio, 40 dB Setting:
> 85dB, input shorted, IHF A-weighted
> 80dB, input shorted, unweighted
Signal to Noise Ratio, 50 dB Setting:
> 89dB, input shorted, IHF A-weighted
> 84dB, input shorted unweighted
Signal to Noise Ratio, 60 dB Setting:
> 94dB, input shorted, IHF A-weighted
> 91dB, input shorted, unweighted
Inter-channel Crosstalk:
> 80 dB at 1 kHz
Input Impedance:
MM or MI: 47k Ω
MC Variable: 50- 550 Ω
Output Impedance:
Unbalanced: < 100 Ω
Balanced: < 100 Ω per leg
Input Sensitivity at 1 kHz, 4mV Input:
40 dB: 4 mV for 450mV output
50 dB: 4 mV for 1.4 Volts output
60 dB: 4 mV for 4.25 Volts output
Input Sensitivity at 1 kHz, 1V Output:
40 dB: 9 mV for 1.0 Volt output
50 dB: 3 mV for 1.0 Volt output
60 dB: 0.9 mV for 1.0 Volt output
Total Gain:
40 dB / 50 dB / 60 dB (unbalanced output)
46 dB / 56 dB / 66 dB (balanced output)
XLR Pin Identification:
1 = Ground (Shield)
2 = Positive
3 = Negative (Return)
AC Power Requirement:
Standby: < 1 watt
Power On: 9 watts
115 VAC or 230 VAC 50 - 60 Hz
Dimensions:
Width: 17-1/4” (437mm)
Depth: 14-3/4” (375mm)
Depth with cables: 17” (432mm):
Height: 2-1/2” (63.5mm)
Height, without feet: 1-3/4” (45mm)
Weight:
Net: 13 lbs. (5.9 Kg)
Shipping: 19 lbs. (8.6 kg)