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14 

 

 
 

XLR Pin Identification 

1 = Ground (Shield) 
2 = Positive 
3 = Negative (Return) 

 
AC Power Requirement

 

Standby: <1 watt 
Power On: 9 watts 
115

 

VAC or 230 VAC 50 - 60

 

Hz 

(Selected on rear panel) 

 

Dimensions

 

Width: 17-1/4” (437mm)  
Depth: 14-3/4” (375mm) 
Depth with cables: 17” (432mm) 
Height: 2-1/2” (63.5mm)  
Height, without feet: 1-3/4” (45mm)  
 

Weight

 

Net: 13

 

lbs. (5.9

 

Kg)  

Shipping: 19

 

lbs. (8.6

 

kg) 

 

 

Specifications 

 

 

Frequency Response:  

20-20Khz, +/- 0.2dB 

 

Total Harmonic Distortion 

< 0.02% at 1

 

kHz 

 

Signal to Noise Ratio, 40 dB Setting 

 

>85dB, input shorted, IHF A-weighted  
>80dB, input shorted, unweighted 

 

Signal to Noise Ratio, 50 dB Setting

 

>89dB, input shorted, IHF A-weighted  
>84dB, input shorted unweighted 

 

Signal to Noise Ratio, 60 dB Setting

 

> 94dB, input shorted, IHF A-weighted 
> 91dB, input shorted, unweighted 

 

Inter-channel Crosstalk  

>80

 

dB at 1

 

kHz 

 

Input Impedance

 

MM or MI: 47k

 

Ω 

MC Variable: 50- 550

 

Ω  

 

Output Impedance  

Unbalanced: < 100

 

Ω  

Balanced: < 100

 

Ω per leg 

 

Input Sensitivity at 1 kHz, 4mV Input 

40 dB:  4 mV for 450mV output  
50 dB:  4 mV for 1.4 Volts output 
60 dB:  4 mV for 4.25 Volts output 
 

Input Sensitivity at 1 kHz, 1V Output 

40 dB:   9 mV for 1.0 Volt output  
50 dB:   3 mV for 1.0 Volt output 
60 dB:   0.9 mV for 1.0 Volt output 

 

Total Gain        

40 dB / 50 dB / 60 dB (unbalanced output) 
46 dB / 56 dB / 66 dB (balanced output) 

 

 
 

Specifications and features subject to change  
or improvement without notice. 

 

Copyright Parasound Products, Inc., 2017 

 

 

 

 

Rev. 1.0 

 

 

www.parasound.com 

Содержание JC 3 Jr.

Страница 1: ...JC 3 Jr Phono Preamplifier OWNER S GUIDE...

Страница 2: ...2...

Страница 3: ...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...

Страница 4: ...Voltage Selection 6 Audio Input Connections 7 Cartridge Impedance Selection 8 Gain Control 8 Audio Output Connections 9 12V trigger and Other Connections 9 Front Panel Operation 10 Frequently Asked Qu...

Страница 5: ...r Parasound warranty service We recommend that you make an extra copy of your original purchase receipt bill of sale and store it inside the JC 3 Jr s carton Five Digit Serial Number located on the bo...

Страница 6: ...output cables that are long enough to leave some slack that will enable you to pull the JC 3 Jr out of a cabinet to check or to change connections without inadvertently disconnecting cables If you re...

Страница 7: ...230V markings on the carton The 115V setting is correct for North America where the JC 3 Jr can operate safely with AC line voltages between 110V 120V Most other countries will require the switch to b...

Страница 8: ...s located next to the right channel XLR balanced output 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...

Страница 9: ...e Control 50 550 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 cons...

Страница 10: ...r preamplifier The 12V input is a 3 5mm 1 8 mono mini jack To trigger the JC 3 Jr on and off automatically insert the trigger wire plug into this jack and plug the other end into your preamplifier or...

Страница 11: ...erview John Curl s phono preamp design are legendary His skills for amplifying extremely low level signals gives you the listener the best possible opportunity to experience the full emotional content...

Страница 12: ...he most frequent reason for distortion is using an MM cartridge with the JC 3 Jr Gain switch set to 50 dB or 60 dB try 40 dB The second most frequent reason is using a high output MC cartridge with th...

Страница 13: ...d Dealer 3 You are not the original owner The Parasound warranty is not transferable 4 Unit s serial number was removed modified or defaced 5 Unit shows evidence of abuse and or misuse 6 Unit was modi...

Страница 14: ...ut shorted IHF A weighted 84dB input shorted unweighted Signal to Noise Ratio 60 dB Setting 94dB input shorted IHF A weighted 91dB input shorted unweighted Inter channel Crosstalk 80dB at 1kHz Input I...

Страница 15: ...15...

Страница 16: ...16 Parasound Products Inc 2250 McKinnon Ave San Francisco CA 94124 415 397 7100 Fax 415 397 0144 www parasound com...

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