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Related Manuals for Conrad-johnson design Classic Sixty
Summary of Contents for Conrad-johnson design Classic Sixty
- Page 1 Conrad-Johnson Owner’s Manual Classic Sixty Vacuum-Tube Amplifier conrad-johnson It just sounds right.
- Page 2 Thank you for selecting the Classic Sixty amplifier to power your audio system. The Classic Sixty draws on three decades of re- search at conrad-johnson into the reproduction of recorded music. The result is a power amplifier with a remarkable ability to recreate the dynamics, textures, tonalities, and ambience of live musical performances.
- 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 origi- nal purchaser, or five years from the date of shipment to the au- thorized conrad-johnson dealer.
- Page 4 Be aware that requesting an estimate will delay service to your unit, as we will have to contact you for approval before commencing service. Registering The Warranty Please return the enclosed card to the factory within 30 days of purchase to register the warranty Classic Sixty Owner’s Manual...
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Page 5: Electromagnetic Interference (Emi)
All Classic Sixty amplifiers sold in the United States are configured for operation on a 60Hz ac power line producing between 108 and 126 volts. Export versions of the Classic Sixty will have the correct operating voltage and frequency clearly marked on the back panel of the unit, near the ac power cord. - Page 6 Physical location and 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 remain at least 4" (100mm) away from input/output cables. Classic Sixty Owner’s Manual...
- Page 7 INPUT: Connect the preamplifier to your Classic Sixty 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 "dou- ble banana"...
- Page 8 The Classic Sixty uses seven vacuum tubes of three different types: one type 6189 (V1), two type 6922 (V2 and V3), and four type EL34 (V4 through V7). In the Classic Sixty SE, the output tubes (V4 through V7) are changed to KT120s. Note: the KT120 is NOT a plug in replacement for the EL34 –...
- Page 9 PLATE FUSE: Your Classic Sixty has been fitted with plate supply fuses that are installed to protect the amplifier circuitry in the event of output tube failure.
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Page 10: Absolute Phase
This will be the case if the number of phase inver- sions is even (or zero). The Classic Sixty is phase correct (non-inverting). If your system has an odd number of inversions, (for example, if you have a phase inverting preamplifier) then you must add one phase inver- sion. - Page 11 Performance Tip Warm up the Classic Sixty before listening: The sonic performance of the Classic Sixty improves noticeably as the unit warms up. The midrange becomes more lucid, the highs smoother, and the soundstage expands. The warm up period can be expected to last about fifteen minutes.
- Page 12 Net Weight: 41 lb net Fuses The Classic Sixty 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 the secondary circuits of the transformer (F2 –...
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