Parasound Halo JC 1+ - Black - Mono Amplifier - By John Curl - 400 W

About the Parasound Halo JC 1+ - Black - Mono Amplifier:

Halo is our premier line with a reputation for taking on the most expensive equipment on the market at a fraction of the price. Halo has earned unparalleled accolades and awards.

Features of the Parasound Halo JC 1+ - Black - Mono Amplifier

• 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
• 2.1 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
• Available in silver or black

Specifications of the Parasound Halo JC 1+ - Black - Mono Amplifier

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)

Shipping Carton Dimensions

• Width: 29-1/2″ (750 mm)
• Depth: 27-1/2″ (700 mm)
• Height: 15-3/4″ (400 mm)

Net Weight

83 lb. (37.6 kg)

Shipping Weight

107 lb. (48.5 kg)

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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