Parasound JC 2 инструкция обслуживания

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IMPORT ANT SAFETY INSTRUCTIONS Th e li gh tn in g fla sh w it h th e ar ro wh ea d sy mb ol w it hi n an e qu il at er al t ri an gl e is i nt en de d to a le rt t he u se r to t he p re se nc e of “ da ng er ou s vo lt ag e” i ns id e th e pr od uc t th at m ay c on st it ut e a ri sk o f el ec tr ic s ho ck . The exclamation point within an [...]

3 Thank Y ou for Choosing Parasound Y our new Parasound ® Halo JC 2 preamplifier represents the pinnacle of analog audio technology . The JC 2 was originally conceived by Parasound president, Richard Schram, as a companion for the famed Halo JC 1 mono power amplifier . In the spirit of the JC 1, Parasound commissioned John Curl and CTC builders [...]

4 T ABLE OF CONTENTS Important Safety Instructions ........................................ 2 Introduction ................................................... 3 Unpacking and Placement Guidelines .................................. 5 Rack Mounting ................................................. 6 115 – 230v AC Selector Switch ...................[...]

5 UNP ACKING YOUR JC 2 AND PLACEMENT GUIDELINES Unpacking Y our JC 2 Carefully remove your JC 2 from its shipping carton and locate all the enclosed accessories: • Remote control and two AAA batteries • AC power cord • Four trigger wires, two with 2.5 mm sub-mini plugs, two with a 2.5 mm and a 3.5 mm mini plug While you are unpacking your JC [...]

6 UNP ACKING YOUR JC 2 AND PLACEMENT GUIDELINES Rack Mounting Y our Parasound JC 2 With its four feet removed, the JC 2’ s front panel height occupies three rack spaces (5 1 / 4 ” or 133 mm. (A single standard rack space occupies 1 3 / 4 ” vertical space.) For mounting in a standard 19” equipment rack, you must use the Parasound HRA 3 rack [...]

7 CONNECTING YOUR JC 2 Always disconnect the AC cord to your JC 2 and power amplifier(s) before making or changing any input, output or trigger wire connections. Inserting or removing an input or output cable while the JC 2 or power amplifiers are turned on can result in a blast of sound that can damage your loudspeakers. Make sure there is no st[...]

8 CONNECTING YOUR JC 2 continued OUTPUT CONNECTIONS There are four pairs of output connections on the JC 2. All of them are active simultaneously . Record Out Jacks The Record Out jacks connect to the Record Input jacks on your audio recorder . The Record Out jacks provide fixed level signals that are unaffected by the master volume control, L or [...]

9 CONNECTING YOUR JC 2 continued OTHER CONNECTIONS 12V T rigger Out The re are fo ur 12 vol t t rig ger ou tpu ts. Th ese ca n b e u sed to tu rn on pow er amp lifi ers an d o the r e qui pme nt tha t a re equ ipp ed wit h a uto mat ic tur n-o n i npu ts. T wo o f t he 12 vol t t rig ger ou tpu t j ack s l abe led 1 and 2 are li ve whe nev er the [...]

10 OPERA TING YOUR JC 2 Before turning the JC 2 on, recheck all your connections and turn down the volume control to avoid any unpleasant “blasts” that could damage your speakers. T urn On Delay The first time you turn on your JC 2 after connecting its AC power it will automatically mute for 45 seconds with its Mute indicator flashing red. Th[...]

11 OPERA TING YOUR JC 2 continued We use independent high-resolution Japanese TKD gain control potentiometers to trim the volume of each channel for a balanced sonic image. In most cases you will simply leave the Left and Right knobs fully clockwise where the potentiometer wipers make direct contacts and are out of the circuit. Note: The Left and R[...]

12 OPERA TING YOUR JC 2 continued/DESIGN OVERVIEW Polarity Normal & Invert Buttons The polarity (or phase) of the Main Outputs is the same as the input unless you press the Invert button to invert the polarity of the Main Outputs 180° relative to the input signal. Pressing the Normal button restores normal 0° polarity of the Main Outputs. For[...]

13 FREQUENTL Y ASKED QUESTIONS Why is there no sound from the speakers? - Check that AC is live and the “P” badge and an input LED are illuminated. - Check that input and output cables are secure at both ends. - Make sure your JC 2 is switched to the correct input. What could cause the remote to not work? - Remote’ s batteries are weak or dea[...]

14 JC 2 also insure the best possible analog connection to source components which are equipped with balanced outputs. We generally recommend balanced connections if your power amplifiers or source equipment are located more than 10 feet from your JC 2. Many serious listeners prefer the sonic characteristics of balanced connections because their l[...]

15 JC 2 SPECIFICA TIONS Frequency Response 5 Hz – 100 kHz, +0/-3 dB Distortion THD: < 0.003% at 100 Hz THD: < 0.005% at 20 kHz IM: < 0.003% S/N Ratio > 116 dB, input shorted, IHF A-weighted > 104 dB, input shorted, unweighted Crosstalk > 100 dB at 10 kHz > 90 dB at 20 kHz Input Impedance Unbalanced: 30k Ω Balanced: 30k Ω pe[...]

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