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Conrad-Johnson Owner’s Manual

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Classic Sixty Vacuum-Tube Amplifier

conrad-johnson 

It just sounds right.

Summary of Contents for Classic Sixty

Page 1: ...Conrad Johnson Owner s Manual Classic Sixty Vacuum Tube Amplifier conrad johnson It just sounds right...

Page 2: ...y circuit designs parts and materials for all conrad johnson products are selected with a view to maintaining optimal performance over the years Our reputation for producing among the industry s most...

Page 3: ...ohnson dealer in the United States for use in the United States d Normal wear e Incidental or consequential damages are not covered under this warranty Some states do not allow the exclusion of inci d...

Page 4: ...on service department can also be reached by e mail at service conradjohnson com by phone at 703 698 8581 or by fax at 703 560 5360 Service If your conrad johnson audio component requires service repa...

Page 5: ...susceptibility to radio frequency interference and other forms of EMI Choice of materials physical layout grounding practice and power supply design have all been speci fied with a view to reducing t...

Page 6: ...d cable dress can be an important factor in minimizing hum pickup The installation should situate the pream plifier well away from the power amplifier and power ac mains cords should be dressed to rem...

Page 7: ...and out together Terminals on speakers are usually coded one designated C ground or black the other des ignated or red In phase connection of the speakers can nor mally be achieved by taking care to c...

Page 8: ...ce We know of no vacuum tubes available which will improve the sonic performance of your Classic Sixty We highly recommend that you purchase replacement tube sets from conrad johnson design We anticip...

Page 9: ...al for these LEDs to flash or flicker when the amplifier is in use This biasing proce dure should be performed whenever the amplifier s output tubes are replaced and after each six months of average u...

Page 10: ...e a fall in pressure and the system is said to be phase inverting Each component in the stereo system either preserves the phase of the incoming signal and is said to be phase correct or inverts the p...

Page 11: ...nects will be system dependent those that are top ranked on one system may be a poor choice for a different system Consult your conrad johnson dealer for recommendations for your specific system Perfo...

Page 12: ...y power transformer is protected by a fuse on the ac power line F1 located in a compartment in the ac line cord re ceptacle mounted on the back of the amplifier and by four sepa rate internal fuses on...

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