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AXPONA 2018 Show Report By Enjoy the Music.com
AXPONA 2018 Show Report -- Audio Expo North America

Parasound Debuts Halo JC 5 Stereo Amplifier At AXPONA 2018

 

 

   Parasound has introduced its Halo JC 5 stereo amplifier ($5995) designed by audio legend John Curl and will be at AXPONA 2018 within room 730. Delivering a remarkable 400 watts per channel, the Parasound Halo JC 5 distills the essence of two top-of-the-line Halo JC 1 monoblock power amplifiers into a single chassis that is the same size as one JC 1. The new Parasound Halo JC 5 combines high power and ultra-high bias Class A/AB sonic quality at roughly two-thirds the price of a pair of JC 1s.

The Parasound Halo JC 1 monoblock was designed by John Curl and introduced 16 years ago to instant international acclaim. High bias Class A/AB provides 12 Watts per channel pure Class A power and Class AB to its 400 watts per channel 8 Ohm rating (600 watts per channel into 4 Ohms). The unit can be bridged to mono for 1200 Watts into 8 Ohms. The output stage employs 24 beta-matched, 15 Ampere, 60 MHz bipolar transistors to deliver a formidable peak current of 90 amperes.

 

 

The power supply employs a 1.7 kVA shielded toroid power transformer with a premium H18 grade steel core. It has independent secondary windings for its dual-mono power supply. As with the JC 1, input stage B+/B- rails are 10 V above the output stage rails to eliminate any chance of distortion caused by voltage sagging when the amp is under load. Independent power supplies for left and right channels input stages employ filter caps totaling 8,880 F. Driver and output stages employ massive Rubycon filter caps totaling 132,000 F.

 

 

The Halo JC 5 is direct-coupled, protected by DC servo circuits to eliminate coupling capacitors, while extending bass response down to 5 Hz. Its balanced inputs use discrete circuits with Neutrik locking XLR connectors, and Vampire 24k gold-plated RCA input and loop output jacks. Five-way "propeller" speaker binding posts are custom-manufactured for Parasound by CHK Infinium. They are 24k gold-plated and accept 7-gauge bare wire.

 

 

Features 
Circuitry designed by legendary John Curl 
Ultra-high bias Class A/AB operation 
12 watts per channel of pure Class A power
90 amperes peak current per channel
Stable with speaker impedance dips to 1.5 ohms
Balanced inputs with discrete circuits
CHK Infinium, custom 5-way speaker binding posts 
Neutrik locking XLR input connectors
Vampire gold-plated RCA input & loop output jacks
Direct-coupled signal path, no capacitors or inductors
DC Servo and relay protection circuits
AC turn-on inrush surge protection with relay bypass
Dual-mono input stages with 110 volt DC rails
JFET input stage, MOSFET driver stage 
24 beta-matched 15 ampere, 60 MHz bipolar output transistors
1.7 kVA shielded toroid power transformer with independent windings for each channel
Independent power supplies for left & right channel input stages, driver stages, output stages
8,880 F Nichicon Gold Tune filter capacitors for input stages
132,000 F Rubycon filter capacitors for output stages
Full power is rated all the way down to 5Hz for unrestricted low-end bass
Harris hyper-fast soft-recovery bridge diode rectifiers
Automatic turn-on by 12 V trigger or audio sensing 
Four rack-space chassis with rear carry handles
Rack mount hardware is included
Premium quality 9-ft, 12-gauge IEC power cord, with silver soldered connectors
Finish: Available in silver or black
Specifications
400 watts x 2 @ 8 ohms RMS, both channels driven
600 watts x 2 @ 4 ohms RMS, both channels driven
1200 watts x 1@ 8 ohms, in mono bridged mode
Frequency Response: 5 Hz - 100 kHz, +0/-3 dB; 20 Hz - 20 kHz, +0/-0.25 dB 
Slew Rate: > 130 volts per microsecond 
Total Harmonic Distortion (THD) < 0.05 % at full power; < 0.03 % at typical listening levels 
IM Distortion: < 0.04 % 
TIM: Unmeasurable 
Inter-channel Crosstalk > 87 dB at 1 kHz; > 72 dB at 20 kHz 
Total Gain: 29 dB 
S/N Ratio: > 116 dB, input shorted, IHF A-weighted; > 111 dB, input shorted, unweighted 
Damping Factor: > 1200 at 20 kHz
Dimensions: 17-5/8" x 7-3/4" x 20" (WxHxD)
Weight: 73 lbs

 

 

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