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Parasound Halo JC 1+ Mono Power Amplifier

Rs. 1,087,000

PARSOUND JC 1+

Features

  • Circuitry designed by legendary John Curl
  • Ultra-high bias Class A/AB operation
  • 25 watts of pure Class A power
  • Stable with speaker impedance dips below 1Ω
  • Bybee Music Rails™ - active high frequency filters for input stage
  • New John Curl driver stage employs a cascode circuit for greater open loop bandwidth & superior linearity
  • Gain switch to select 29 dB or 23 dB gain for optimum compatibility with high gain preamps or extremely efficient speakers
  • R-core transformer for input stage suppresses noise on power line
  • 6 massive 33,000 uF Nichicon Gold Tune filter capacitors for output stage
  • 22,400 uF input stage power supply filter capacitors, independent of the main power supply
  • Dual CHK Infinium, custom 5-way speaker binding posts for easy bi-wiring
  • Neutrik locking XLR balanced input & loop output jacks
  • Vampire 24k gold-plated RCA input & loop output jacks
  • Direct-coupled signal path, no capacitors or inductors in the audio path
  • JFET input stage, MOSFET driver stage
  • 24 beta-matched 15 ampere, 230V, 60 MHz bipolar output transistors
  • 1 kVA shielded toroid power transformer with premium H18 grade core
  • Independent power supplies for input stage, driver stage & output stage
  • Full power is rated all the way down to 2Hz for unrestricted low-end bass
  • Harris hyper-fast soft-recovery bridge diode rectifiers
  • REL & Nichicon Muse capacitors
  • DC servo & relay protection circuits
  • AC turn-on inrush surge protection with relay bypass
  • Automatic turn-on by 12 V trigger or audio sensing
  • 4 rack space chassis with rear carry handles
  • Rack mount hardware is included

SPECIFICATIONS

Power Output

  • 450 x1 watts @ 8 Ω
  • 850 x1 watts @ 4 Ω
  • 1300 x1 watts @ 2 Ω

Power measurements are with 120 VAC:

  • 0.15% THD, RMS continuous power
  • Full audio band (20 Hz - 20 kHz)

Class A Power Output

  • 25 Watts, bias switch set to high
  • 10 Watts, bias switch set to low

Current Capacity

180 amps, peak

Slew Rate

> 130 volts per microsecond

Frequency Response

  • 2 Hz - 120 kHz, +0/-2 dB
  • 20 Hz - 20 kHz, +0/-0.25 dB

Total Harmonic Distortion (THD)

  • < 0.15 % at full power
  • < 0.02 % at typical listening levels

IM Distortion

< 0.03 %

TIM

Unmeasurable

Damping Factor

> 1200 at 20 Hz

Input Impedance

  • Unbalanced: 50 kΩ
  • Balanced: 100 kΩ, (50 kΩ per leg)

S/N Ratio, inputs shorted

  • >122 dB, IHF A-weighted, bias set to Low
  • >120 dB, IHF A-weighted, bias set to High
  • >113 dB, Unweighted, bias set to Low
  • >111 dB, Unweighted, bias set to High

Total Gain

  • 29 dB (Gain switch set to normal)
  • 23 dB (Gain switch set to low)

Input Sensitivity for 28.28 V Output into 8 Ω

  • Unbalanced: 1 V
  • Balanced: 1 V per leg
  • (Gain switch set to normal)

DC Trigger Requirements

+9 Vdc to +12 Vdc, 5 mA

Audio Trigger Requirement

  • 2.5 mV - 10 mV
  • XLR Pin Identification
  • 1 = Ground (Shield)
  • 2 = Positive
  • 3 = Negative (Return)

Dimensions

  • Height without feet: 7-1/8" (181 mm)
  • Height with feet: 7-3/4" (197 mm)
  • Depth: 20" (508 mm)
  • Depth with cables: 21-1/2" (546 mm)

Wight

48.5kg

Power Requirement

  • Standby: <1 Watt
  • Idle (bias set to low): 145 Watts
  • Idle (bias set to high): 275 Watts
  • Typical Listening levels: 400 Watts
  • Maximum: 1500 Watts
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