background image

5

Unpacking Your JC 3+ & Placement Guidelines

Unpacking Your JC 3+

Carefully remove your JC 3+ from its shipping carton and locate all the enclosed accessories:

• AC power cord
• Two 12V auto turn on trigger wires
• One wire has two mono 3.5 mm (1/8”) mini plugs
• One wire has a mono 2.5mm sub-mini plug and a mono 3.5mm mini plug

While you are unpacking your JC 3+, inspect it thoroughly for possible shipping damage and tell
your Parasound dealer immediately if you find any. If possible, save and store both the inner and
outer cartons and–most especially–the foam packing inserts, to protect the JC 3+ if you have to
move it or ship it. You may wish to flatten the cardboard cartons to save room in storage after
cutting the taped seams on the bottom flaps. This would be a good time to make a copy of your
sales receipt to store with the JC 3+’s original packing.

Placement Guidelines

The JC 3+ will be easier to use and will last longer if you follow these simple guidelines:

Place the JC 3+ on a shelf that will adequately support its weight.

Use input and output cables that are long enough to leave some slack; that will enable

you to pull the JC 3+ out of a cabinet to check or to change connections without
inadvertently disconnecting cables.

If you’re putting the JC 3+ in a cabinet, it needs a space that’s at least 22 inches wide so

you’ll be able to turn it around for access to its rear panel connections.

Place your JC 3+ where you can route input and output signal cables as far as possible

from any AC cords.

Where signal cables must cross AC cords they should do so only at a 90° right angle.

Ventilation Requirements

• Always position the JC 3+ horizontally.
• We recommend that you do not place the JC 3+ above a power amplifier.
• Do not install the JC 3+ in an unventilated equipment cabinet or compartment. Pockets of

stagnant hot air can build up even in a cabinet with an open front and back.

Rack Mounting Your Parasound JC 3+

With its four feet removed, the JC 3+’s panel height occupies two rack spaces: 3.1/2" or 88.2 mm.
(A single standard rack space occupies 1.75" vertical space.) For mounting in a standard 19”
equipment rack, you must use the Parasound HRA 2 rack mount kit (purchased separately). The
HRA 2 kit includes four bolts and eight plastic washers with raised “shoulders.”

Slide one washer onto each mounting bolt with its raised shoulder pointing toward the panel hole.
Carefully insert the bolt through the hole and slide the other washer on the bolt with its raised
shoulder facing the rear side of the panel. The washers will sandwich the JC 3+ panel and the
four mounting bolts to prevent metal-to-metal contact between the JC 3+ chassis, the equipment
rack, and the other components mounted in the rack.

Note:

Tighten each bolt just enough to keep the unit secure in the rack to avoid deforming the

shoulder washers. Eliminating metal-to-metal contact reduces the likelihood of creating a ground
loop that might introduce hum into your system.

Summary of Contents for Halo JC 3+

Page 1: ...JC 3 Phono Preamplifier OWNER S GUIDE...

Page 2: ...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...

Page 3: ...ation Guidelines 5 AC Voltage Selection 6 Audio Input and Output Connections 7 Other Connections on your JC 3 9 Rear Panel Controls 9 Front Panel Operation 10 Frequently Asked Questions 11 If You Requ...

Page 4: ...ase receipt bill of sale and store it inside the JC 3 s carton Parasound JC 3 Phono Preamplifier Serial __________________________________________________ Parasound Dealer ____________________________...

Page 5: ...o its rear panel connections Place your JC 3 where you can route input and output signal cables as far as possible from any AC cords Where signal cables must cross AC cords they should do so only at a...

Page 6: ...v markings on the carton The 115V setting is correct for North America where the JC 3 can operate safely with AC line voltages between 110 120v Most other countries will require the switch to be set t...

Page 7: ...channel inputs and outputs Note In some cases eliminating hum might require connecting your turntable ground wire directly to your line stage preamp instead of to the JC 3 You can use any chassis scre...

Page 8: ...hm load You can try the 47k settings to see which sounds best in your system MC 47k Fixed is also the load that Grado and Soundsmith recommend for their Moving Iron MI cartridges Setting the Impedance...

Page 9: ...nvenience there are two ways the JC 3 can be turned on and off Manual Use the front panel On Off button 12 V When the Turn On Options switch is set to the 12 V position the JC 3 is turned on and off a...

Page 10: ...io signals from the non audio circuits and non audio wiring Each channel has its own circuit board and each channel is fully enclosed in its own extruded aluminum vault This vault shields the sensitiv...

Page 11: ...h other while power is off Try to route audio cables and AC cords perpendicular to each other while power is off Make sure insulating shoulder washers are used if unit is rack mounted Ensure that the...

Page 12: ...Parasound Under the Following Conditions 1 Unit was sent without the Parasound assigned RA number marked on the carton 2 Unit was sent in an unsuitable shipping carton and is likely to have been dama...

Page 13: ...ponse 20Hz 20kHz 0 2dB Total Harmonic Distortion 0 01 at 1kHz Signal to Noise Ratio MM 87dB input shorted IHF A weighted 78dB input shorted unweighted Signal to Noise Ratio MC 87dB input shorted IHF A...

Page 14: ...14 Parasound Products Inc 2250 McKinnon Ave San Francisco CA 94124 415 397 7100 Fax 415 397 0144 www parasound com...

Reviews: