Krell Industries KSA-200S, KSA-300S, KSA-100S manual Amplifier Operation, PAGE12

OPERATION

AMPLIFIER OPERATION

Understanding the 'operation of the amplifier is very easy. Equally important is an understanding of the care that should be exercised when operating the

system as a whole, in relation to the enormous power output of the KSA. Simple mistakes, such as switching between active sources without muting

the preamplifier output, or bumping/miscuing a cartridge, can generate large transients at low frequencies. With this type of transient the KSAcan

generate enough power to damage most loudspeakers. All switching of

sources should be done with the preamplifier level either muted or fully

attenuated. Inputs to the amplifier should not be changed while the amplifier is on.

NOTE: Care must be taken

when setting

high

playback levels.

Because

of

their tremendous

reserve

of clean

power,

KRELLamplifiers

safely

drive

speakers

to

higher

sound

pressure

levels

than

other

amplifiers.

This

also

means driving

the

speakers

to their

limit.

Always turn

the level

down at

the

first sign

of

distortion.

Whenturning the system off, turn the volume on the preamplifier all the way down or put it into the MUTEor STAND-BYposition. Turn the amplifier off.

This avoids the possibility of a turn-off transient from another component getting to the speakers. Because of the tremendous output power in the KSA amplifiers, the amplifier should not be turned on or off with music playing. This can arc the speaker output relays and potentially damage the amplifier.

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