Start-Up And Operation - Master audio DP Serie Manual Del Usuario

11 - COOLING
The DP Series are equipped with electronically controlled forced ventilation. The
turbine, situated at the rear, increases its turnover speed according to the
temperature or power delivered by the amplifier. It's very important to make sure the
ventilation holes are unobstructed to enable the free intake of air and release of hot
air.
Intermittent operation of the turbine prolongs its useful life and prevents the interior
cooling ducts from becoming easily blocked.
The Air Filter should be cleaned regularly, removing
remains of dust and dirt. If the Filter is obstructed, the
cooling will not operate correctly.

12 - START-UP AND OPERATION

Once the mains, loudspeaker and sound sources (input) connections have been
made correctly, start up the pre-amp sources and then press the ON/OFF switch.
Turn the volume controls clockwise to obtain the maximum gain. When the maximum
output power has been exceeded (clipping/distortion), this will be indicated by the
corresponding LED.
13 - CLIP-LIMITER CIRCUIT
This LED indicates the action of the anti-clipping
compressor, preventing output distortion. Make sure this
LED is not alight permanently! No extra power is
obtained in this way and dynamics are lost.
When the amplifier is endangered due to reasons of
temperature, through an inadequate installation or any
other anomaly thus exceeding the safety limits,
(temperature of >90ºC), the corresponding safety circuit
will cause a stoppage for a few seconds, with the LEDs
coming alight. They will also light up in the event of any
short-circuiting occurring at the loudspeaker output.
A connector located on the rear panel allow to take the Limiter LEDs
to a remote point, for permanently control of amplifier.
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