Parasound JC 3 Jr., Руководство пользователя

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9
JC 3 Jr. Input Settings
Cartridge Impedance Select Switch
Select the setting that matches your turntable’s cartridge type. If you are unsure which setting is
best for your equipment you might want to check it on the cartridge manufacturer’s website. You
can also experiment with another setting which sounds the best in your system.
The two position Impedance Select switch selects MC or MM cartridges. Select 47k
Ω
input for all
MM or certain MI (moving iron) cartridges. The MC Variable position works with the adjacent knob
for adjusting the input impedance from 50-550 ohms.
MM or MC - 47k
Ω

For moving magnet or (rarely) moving coil cartridges.
MC Variable Impedance

Accommodates the vast majority of moving coil cartridges. This setting works in
conjunction with the adjacent Variable MC Impedance Adjust control. Details are below.
Adjusting the Input Impedance Control (50-550
Ω
)
The JC 3 Jr.’s Impedance adjust knob enables you to fine tune the input impedance for MC
cartridges over a range of 50 ohms to 550 ohms. Cartridge manufacturers recommend what they
consider to be an optimal load impedance. However, their spec won’t necessarily give you the
best results in your system. We encourage you to experiment with this control and use whichever
load impedance you feel results in the best performance of your system in your listening room.
For some JC 3
Jr. users the sonic differences will be subtle.
Gain Control
Before listening to the JC 3 Jr. you should select the appropriate gain for your cartridge.
40 dB

The lowest gain settings. Typically used with moving magnet cartridges.

50 dB
For high output moving coil cartridges or low output moving magnet cartridges.

60 dB
For low output moving coil cartridges whose output is typically less than 0.5 mV.
Whether you have an MC or MM cartridge you can experiment with which of the three
gain settings gives you the best with your line stage preamp or integrated amplifier.