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Related Manuals for Mark Levinson JC-2
Summary of Contents for Mark Levinson JC-2
- Page 1 INSTRUCTION MANUAL for the JC-2 PREAMPLIFIER...
- Page 2 IMPORTANT Please read these instructions carefully and completely before operating the JC-2 preamplifier. A great deal of effort went into the design and construction of this precision device. Understanding its functions will enable you to use it to fullest advantage.
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Page 3: Installation
INSTALLATION 3.1. Connectors The JC-2 is equipped with phono connectors for all audio inputs and out- puts. There are two cannon receptacles for connection to the power supply. A binding post is provided for ground connections to the chassis of the JC-2. -
Page 4: Operation
3.2. Power Supply Connection The power supply for the JC-2 is mounted in a separate chassis to eli- minate hum pick-up. Check the voltage the power supply comes a cable with a three power supply label to be sure they correspond to the voltage of the power source being used. - Page 5 The external regulated power supply and the internal active filter in the JC-2 make it possible to incorporate very high gain phono circuitry with great immunity to hum pick-up and other power supply noise. A series of...
- Page 6 5.2. Wood and Lexan Case A special case of original design is available for the JC-2 Preamplifier. The engraving on the top plate of the JC-2 is visible through a lexan window inset into the of the case. Gain: Overload:...
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Page 7: Specifications
Phono Section: Gain* OVERLOAD POINT* *(see also Section 5) MAXIMUM OUTPUT CHANNEL TRACKING FREQUENCY RESPONSE NOISE below 10mv, inputs shorted below 10mv, 600ohms load INPUT IMPEDANCE RECOMMENDED LOAD OPEN LOOP BANDWIDTH SLEW RATE NOISE (JC-1SM) Line Section: FREQUENCY RESPONSE MAXIMUM OUTPUT GAIN NOISE INPUT IMPEDANCE... -
Page 8: Warranty
WARRANTY All MARK LEVINSON products are guaranteed for five full years from date of purchase. Parts and labor will be furnished free of charge. The manufacture assumes no responsibility for damaged or abused equipment and reserves the right to determine cause of defects. -
Page 9: Phono Section
To accomplish the switching facility, differences had to be incorporated in the modules which DO NOT ALLOW Compatibility. For detailed information, contact the factory. For any questions concerning individual units, give us the SERIAL NUMBER of JC-2 in question. *CRC: Cartridge Resonance Compensation. The CRC circuit supplied rolls the high frequency response at 6dB per octave, -6dB at 20kHz. - Page 10 TONEARM CABLE ADAPTOR From an effort to simplify the connection of existing turntables to MLAS Pre- amplifiers fitted with Lemo connectors, we have developed the CA-1 cable adap- tor. The CA-1 is a solid block of aluminum 2X2X .75" machined to exact toler- ances and finished in our standard brushed black anodized surface.
- Page 11 The CA-1 may be mounted to a shelf, cabinet, or turntable base with one wood screw. This keeps fragile tonearm leads from breaking or flexing. Use LL-.6 or LL-3 cables to connect with your JC-2 or LNP-2 preamplifier. Cut the phono connectors from the tonearm leads, nothing which wire is left and which is right.
- Page 12 PLS-150 POWER SUPPLY SYSTEM JC-2 preamplifiers with Lemo connectors are equipped with the PLS-150 Power Supply. The PLS-150 Power Supply is considerably larger and heavier than the ones delivered with previous units. We recommend that it be positioned with the cable end facing the wall and the front plate facing forwards. In this way, the two LED' s will be visible.
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