Parasound JC 3 manual Audio Output Connections, Other Connections, 12V In Jack, 12V Loop Out Jack

Audio Output Connections

The JC 3 Output Jacks connect to the input jacks on your line level preamplifier. Each JC 3 module has two Output jacks, one Balanced XLR jack and one Unbalanced RCA jack. The balanced and unbalanced jacks are active simultaneously. If your preamplifier is equipped with balanced inputs we recommend using the JC 3 Balanced XLR output jacks for best possible signal-to-noise ratio and best rejection of external noise sources.

Note: The JC 3 uses a fully differential balanced output circuit and does not employ phase inverters. The JC 3 does not invert polarity.

Each channel module has a 3 position input load switch. Select the setting that matches your turntable cartridge type. If you are unsure which setting is best for your equipment you might want to contact the cartridge manufacturer. You may also try all three settings and use the setting which sounds the best.

ƒThe MM setting is for moving magnet cartridges. It provides a 47k ohm load and appropriate gain for all MM cartridges.

ƒThe MC 100 Ω setting is for most moving coil cartridges. It provides the higher gain required for low output or high output MC cartridges with a 100 ohm load that is ideal for nearly all MC cartridges.

ƒThe MC 47k Ω setting provides the appropriate gain for MC cartridges with an alternative 47k ohm load. You can try both the 100 Ω or 47k Ω settings to see which sounds best in your system.

ƒThe MC 47k Ω setting is also the recommended load for MI (moving iron) cartridges, such as Grados.

Other Connections

12V In Jack

The JC 3 12V input uses a mono 3.5mm sub-mini jack. To automatically trigger the JC 3 on and off, insert the trigger wire plug into this jack and plug the other end into your preamplifier’s 12V trigger output jack. When the JC 3 Turn On Options switch is set to 12V the JC 3 will turn On and Off with your preamplifier.

If the preamplifier’s trigger output is a + and - terminal, you can cut the 3.5mm plug off one end of the included trigger wire and strip off about ¼” (6mm) of insulation. Attach the bare wires to the + and - terminals. The conductor with the white stripe on its insulation corresponds to the plug’s tip (+) and the conductor with the unmarked lead corresponds to the plug’s “sleeve” (-).

Note: The Model JC 3 trigger circuit draws a negligible 15 mA from the preamplifier.

12V Loop Out Jack

The Trigger Out jack lets you loop or “daisy-chain” the incoming trigger voltage to another component.

AC Power Cord

The IEC standard AC cord supplied with your JC 3 is an audiophile-grade component. Please connect it directly to an AC wall outlet or power conditioner that is always “live.” If possible, plug your JC 3 into the same AC outlet that your preamplifier is plugged into. If different AC outlets are used for the JC 3 and the preamplifier the ground potential may be higher or lower between the outlets, resulting in audible hum.

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