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Conrad-johnson design Premier 140 Owner's Manual

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Summary of Contents for Conrad-johnson design Premier 140

  • Page 2 We want you to enjoy your conrad-johnson product to the full- est. To this end, our staff stands ready to answer any questions you may have about the function and application of your Premier 140, and to pro- vide any needed service both during, and after the warranty period. Our goal is to heighten your enjoyment of recorded music.
  • Page 3 Warranty For Conrad-Johnson Components conrad-johnson design, inc. will provide service under warranty to the original owner on products sold new in the United States for the lesser period of three years from the date of purchase by the original pur- chaser, or five years from the date of shipment to the authorized conrad-johnson dealer.
  • Page 4 Registering The Warranty Please return the enclosed card to the factory within 30 days of pur- chase to register the warranty. Premier 140 Owner's Manual...

  • Page 5: Electromagnetic Interference (Emi)

    10% of the nominal rated voltage. Electromagnetic Interference (EMI) Considerable care has been taken in the design of the Premier 140 to minimize it’s susceptibility to radio frequency interference and other forms of EMI. Choice of materials, physical layout, grounding practice, and power supply design have all been specified with a view to reducing the impact of electromagnetic fields on the performance of this unit.
  • Page 6 4" (100mm) away from input/output cables. Connection INPUT: Connect the preamplifier to your Premier 140 amplifier at the RCA type connectors located on the back of the amplifier. OUTPUT: Five way binding posts are provided for connection of your loudspeakers, with correct spacing to accept a standard “double ba-...

  • Page 7: Absolute Phase

    This will be the case if the number of phase inversions is even (or zero). The Premier 140 is phase correct. If your system has an odd number of inversions, then you must add one phase inversion. This is conveniently done by reversing the positive and negative connections to your speak- ers (be sure to reverse both channels).
  • Page 8 Consult your conrad-johnson dealer for recommendations for your specific system. Questions: If you have questions about the installation or function of your Premier 140 do not hesitate to call Customer Service at (703) 698-8581. Premier 140 Owner's Manual...
  • Page 9 No a-c balance adjustment is necessary. It is necessary to re-bias the amplifier when the output tubes are replaced. The Premier 140 has built in bias indica- tors so that no instruments are required to make this adjustment.
  • Page 10 This biasing procedure should be performed whenever the amplifier’s output tubes are replaced and after each six months of average use. PLATE FUSE: Your Premier 140 has been fitted with plate supply fuses which are designed to protect the amplifier circuitry in the event of out- put tube failure.

  • Page 11: Specifications

    Weight: 85 lbs. Internal Fuses The Premier 140 power transformer is protected by a fuse on the ac power line (F4, located in a tray in the ac power cord receptacle), and by separate fuses on secondary windings for the the bias supply (F1), the low voltage supplies for the bias indicators (F2 and F3), and the filament supply (F5).