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Related Manuals for Conrad-johnson design LP125M
Summary of Contents for Conrad-johnson design LP125M
- Page 1 Conrad-Johnson Owner’s Manual LP125M Vacuum-Tube Amplifier conrad-johnson It just sounds right.
- Page 2 Thank you for selecting the LP125M to power your audio system. The LP125M draws on three decades of research 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 LP125M Owner’s Manual...
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Page 5: Electromagnetic Interference (Emi)
+ 5/- 10% of the nominal rated voltage. Electromagnetic Interference (EMI) Considerable care has been taken in the design of the LP125M to minimize its susceptibility to radio frequency interference and other forms of EMI. Choice of materials, physical layout, grounding prac-... - 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. LP125M Owner’s Manual...
- Page 7 INPUT: Connect the preamplifier to your LP125M amplifier at the RCA type connector 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 No a-c bal- ance adjustment is necessary. It is necessary to re-bias the ampli- fier when the output tubes are replaced. The LP125M has built in bias indicators so that no instruments are required to make this ad- justment.
- Page 9 PLATE FUSE: Your LP125M has been fitted with a plate supply fuse that is 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 LP125M is phase correct (non-inverting). If your system has an odd number of inversions, (for example, if you have a phase in- verting preamplifier) then you must add one phase inversion. - Page 11 The warm up period can be expected to last about fifteen minutes. Questions: If you have questions about the installation or function of your LP125M do not hesitate to call Customer Service at (703) 698-8581. LP125M Owner’s Manual...
- Page 12 Net Weight: 47 lb net Fuses The LP125M power transformer is protected by a fuse on the ac power line (F1, located in a compartment in the ac line-cord recep- tacle mounted on the back of the amplifier), and by four separate internal fuses on the secondary circuits of the transformer (F2 –...
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