Bose 2150 Handbuch für Installateure - Seite 6

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3.0 Using The Amplifiers

3.4 Thermal considerations

When either amplifier is used freestanding, no thermal considerations are necessary other

than keeping sufficient ventilation around the unit.

These amplifiers may be stacked directly on top of each other without spacer panels. If a

Bose

Model 2060 or 2150 amplifier is used with other amplifiers, be sure the heat output

from each amplifier does not interfere with the adequate ventilation of the others.

If the unit is rack mounted, allow for adequate ventilation exits in front of and behind the

amplifier. When several amplifiers are mounted together in a rack, you may need to provide

air inlets and a fan from the outside of the rack.

CAUTION: Do not allow the chassis to exceed the maximum operating temperature of

50˚ C. Be aware of conditions in an enclosed rack that may increase the temperature

above room ambient conditions.

3.5 AC power considerations

Be sure to plug your amplifier into an outlet capable of supplying the correct voltage

specified for your model. Check to be sure the circuit can provide enough current to allow

full-power operation of all the amplifiers in your system.

The power plug serves as the main disconnect device and should always be easily acces-

sible after installation.

The current demand of a power amplifier varies depending on the impedance of the load,

the output level of the amplifier, and the crest factor and duty cycle of the program material.

For example, consider typical conditions during rock music reproduction, with both chan-

nels driven into 4 ohms until musical peaks are just below clipping. Under these conditions,

the Bose

Model 2060 amplifier requires an average of 3.4 amps for 120V versions (1.9

amps for 220-240V versions). The Bose Model 2150 amplifier requires an average of 4.2

amps for 120V versions (2.2 amps for 220-240V versions).

3.6 Magnetic leakage considerations

You can mount the Bose Model 2060 or Model 2150 amplifier without concern for magnetic

flux leakage. However, it is not a good idea to mount any power amplifier near a micro-

phone input transformer or magnetic storage media.

November 19, 2001

AM259107_00_V.pdf