Boulder 1060 Specifications download pdf (Page 12)

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INPUT DC OFFSET VOLTAGE DETECTION

The Boulder 1060 Power Amplifier is a direct-coupled power

amplifier with a servo for zeroing out any DC voltage offset coming from

the preamplifier or other source connected to the amplifier’s input.

If this input DC is sufficient to cause 3 volts or more at the output,

a loudspeaker protection circuit will mute the amplifier output by

electronically disconnecting itself from the loudspeaker. The power

indicator will turn red. This condition will continue until the DC is

removed.

If the indicator remains red, it is recommended that the user correct

the DC offset of the source device before continuing.

CLIP DETECTION

Clipping of the waveform results when any amplifier is driven at

too high a level. A clip detection circuit is included in the 1060 Power

Amplifier.

The indicator will indicate clipping by momentarily turning from

amber to red. Both voltage and current modes of clipping will be

detected, although generally it is only voltage clipping which occurs.

OPERATION

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Boulder 1060 Specifications Page 12