Parasound HALO JC 1+ Owner'S Manual Download Page 3

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Table of Contents

Introduction

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Placement & Ventilation Guidelines

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AC Mains Voltage

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Front Panel Illustration

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Rear Panel Illustration

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Rack Mounting

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Bias Level Switch

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Gain Switch

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Audio Input & Output Connections

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Speaker Connections

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Bi-Wiring & Bi-Amping

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Turn On Options

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Front Panel Operation

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Technically Speaking

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Design Overview

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Problems & Remedies

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If You Require Assistance or Warranty Repair

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Chassis Illustration & Dimensions

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Specifications

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Summary of Contents for HALO JC 1+

Page 1: ...JC 1 Mono Power Amplifier OWNER S GUIDE ...

Page 2: ...g This plug will only fit into a grounding power outlet If you are unable to insert the plug into the outlet contact your electrician to replace your obsolete outlet Do not defeat the safety purpose of the grounding plug 11 Power Cord Protection Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them 12 Lightning Unplug the un...

Page 3: ... 7 Rack Mounting 8 Bias Level Switch 9 Gain Switch 9 Audio Input Output Connections 10 Speaker Connections 11 Bi Wiring Bi Amping 12 Turn On Options 13 Front Panel Operation 14 Technically Speaking 15 Design Overview 16 Problems Remedies 19 If You Require Assistance or Warranty Repair 20 Chassis Illustration Dimensions 21 Specifications 22 ...

Page 4: ...und JC 1 Amplifier Serial ______________ 5 digit number below the bar code Parasound Dealer _________________________________________ Parasound Dealer Phone Number _____________________________ Date of Purchase __________________________________________ Important Warranty information There is no Parasound warranty for this unit if it was not purchased from an Authorized Parasound Dealer A list of ...

Page 5: ... up even in a cabinet with an open front and back AC Mains Voltage NOTE Before you plug this amplifier into an AC mains outlet The correct voltage for JC 1 is printed on the rear panel between the AC power switch and the power cord connector This must match the AC mains voltage where you live AC 115V 60Hz or AC 230V 50Hz If you live in a region where the AC mains is 230V 220V 240V range Plugging t...

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Page 8: ...e three bolts from each side of the JC 1 These bolts are arranged vertically behind its front panel and in front of its first heatsink fin Line up the three holes on each bracket with the three holes on the JC 1 and reinsert the bolts Make sure the bolts are tight because they will support the entire weight of the JC 1 in the equipment rack To secure the brackets to the rails of your equipment rac...

Page 9: ...If your JC 1 is well ventilated you may find the Normal bias setting offers a sonic improvement If your JC 1 is mounted in a cabinet or ventilation is restricted in any way we recommend you leave the Bias Level switch in the Low position Examples of when to use the Low Bias setting The JC 1 in getting too hot if you can t keep your hand on the heatsink for at least 5 seconds it is too hot The JC 1...

Page 10: ...Place the switch in the position for the input type you will be using Note The Balanced Unbalanced switch is not an input selector Its function is purely to optimize the signal to noise ratio for each type of input You should not connect both the Balanced and Unbalanced jacks at the same time with the expectation of switching between two different devices such as a preamp and a surround processor ...

Page 11: ...nal with no stray strands If you have a soldering iron you can tin apply a small amount of molten solder to each stripped bare wire to prevent it from unraveling fraying and oxidizing Correct Speaker Polarity is Important Polarity refers to and speaker wire connections Speaker wires are coded with color printing or a ridge on the insulation of one lead so you know which lead was connected to the a...

Page 12: ...to the speaker s internal passive crossover circuits With bi amping the LF and HF speaker terminals connect to two separate amplifiers Connecting speaker wires for bi amping Bi Amping requires two JC 1 per speaker four total for a stereo setup Each speaker must be equipped with separate LF Low Frequency and HF High Frequency input terminals The first JC 1 will power the LF section of one speaker A...

Page 13: ...h unit Turn the delay knob to the desired delay time from 0 seconds fully counterclockwise to 12 Seconds fully clockwise Turn On Threshold Adjustment audio turn on mode only This knob sets the audio signal level required for the JC 1 to automatically turn on when the Turn On Options switch is set to the Audio position Fully counter clockwise is the most sensitive setting and requires the least aud...

Page 14: ...ormal operation If the glow remains red after turn on or while the amp is playing it indicates activation of the JC 1 s protection circuits and no sound will be heard from the speakers The JC 1 protects itself from external conditions such as excessive heat load impedance that is too low or a short circuited speaker connection or wire After you correct the fault the JC 1 will resume operation If t...

Page 15: ... Volts total External hum and noise that somehow gets into a balanced line is common to both its positive and negative conductors with respect to ground Therefore it is canceled or rejected in a differential input circuit This phenomenon of rejecting noise signals common to both positive and negative conductors is called common mode rejection Differential inputs are specified according to how well...

Page 16: ...eveloped for super computers and is superior to other circuit board materials especially for high frequencies The chassis is made of heavy gauge aluminum and steel to safely house the internal circuitry This attention to detail when selecting parts makes the difference between a very good amplifier and an outstanding amplifier The Output Stage Power Supply The heart of the power supply is a 2 1kVA...

Page 17: ...e JC 1 s input stage is voltage gain It uses matched pairs of N and P channel discrete JFETs Junction Field Effect Transistors arranged in a differential configuration JFETs are ideal for the input stage because their inherently high impedance makes them less affected by the impedance of the connected source components Ordinary bi polar transistors are low impedance devices and more susceptible to...

Page 18: ...es the need for coupling and blocking capacitors Thus the JC 1 is fully direct DC coupled from its input jacks to its speaker terminals This advanced protection circuitry never needs adjustment or maintenance It operates outside the audio signal path to keep the DC offset at a negligible level The results are startling clarity freedom from listening fatigue and superior bass response Total Protect...

Page 19: ...air cooling should be used Use the Low Bias setting Increase the free space and ventilation above the JC 1 Remove any nearby external sources of heat such as other audio equipment or heaters Background hum or hiss If you have cable or satellite TV try disconnecting the incoming TV or satellite cable if the hum is eliminated you will need a Cable TV Ground Isolator which can be purchased online Lig...

Page 20: ...thout the Parasound assigned RA number marked on the carton 2 Unit was sent in an unsuitable shipping carton and packing inserts and was likely to have been damaged in transit 3 Unit has inadequate packing materials and is likely to have been damaged in transit Wrapping the JC 1 with bubble wrap will not protect it during shipment 4 Unit was shipped collect for shipping charges We do not accept co...

Page 21: ...21 Chassis Illustration and Dimensions ...

Page 22: ... Watts Specifications Power Output 450 watts 8Ω 850 watts 4Ω 1300 watts 2Ω Power measurements are with 120VAC 0 15 THD RMS continuous power full audio band 20Hz 20kHz Class A Power Output 25 Watts bias set to high 10 Watts bias set to low Current Capacity 180 amps peak Slew Rate 130 volts per microsecond Frequency Response 2Hz 120kHz 0 2dB 20Hz 20kHz 0 0 25dB Total Harmonic Distortion THD 0 15 at ...

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Page 24: ...24 Parasound Products Inc 2250 McKinnon Ave San Francisco CA 94124 415 397 7100 www parasound com ...

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