Conrad-johnson design CAV45 Manuale d'uso - Pagina 5

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nstallation

The CAV45 dissipates a significant amount of heat. For proper

ventilation, mount the unit on a flat, hard surface, taking care that

the ventilation holes in the bottom are unobstructed. Maintain at

least four inches of clearance above the unit, and at least three

inches on the sides. The cabinet should be open at front and back.

For more restricted installations, cooling fans are recommended.

The CAV45 is supplied with a cover to provide protection from the

hot surfaces of the vacuum-tubes. It should always be used in

installations where there is any possibility that children or pets may

come near the amplifier.

All CAV45s 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 CAV45 will have the correct operating

voltage and frequency clearly marked on the back panel of the unit,

near the ac power cord. In all cases, the actual line voltage should

be within + 5/- 10% of the nominal rated voltage.

Electromagnetic Interference (EMI)

Considerable care has been taken in the design of the CAV45 to

minimize its 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. Our primary goal, however, is the

accurate reproduction of recorded music in a normal home

environment. We have elected not to compromise this objective by

the application of heavy-handed RFI filters, or by using grounding

practices that reduce RFI at the expense of degraded audio

performance. We find that our approach works well, resulting in

only rare instances of EMI problems which could be treated locally

as needed, rather than compromising the performance of our

product in the 99.9% of installations where EMI is not a problem.

Care in installation can often avoid EMI induced problems.

Interconnect cables should be kept short (3 meters or less), and

shielded cable should be used.

Physical location and cable "dress" can be an important factor in

minimizing hum pickup. Power (ac mains) cords should be dressed

to remain at least 4" (100mm) away from input/output cables.

CAV45

Owner's Manual