Pre-Amp Connection; Start-Up And Operation - Master audio DL Series Manual

8 - PRE-AMP CONNECTION

The input enables connection through
XLR-3. It is necessary to follow the
connection instructions printed on the
rear of the amplifier. The amplifiers
incorporate balanced input for a high
rejection of parasites generated by
long signal cables or proximity to
electric wires or other sources
causing them.
9 – COOLING
The DL Two Series are equipped with electronically
controlled forced ventilation. The turbine, situated at the rear,
increases its speed according to the temperature or power
delivered by the amplifier. It is 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.
Depending on the work conditions and installation site, the inside should be cleaned
regularly. This is done by removing the upper lid and alienating any remains of dust
and dirt. It is advisable to entrust this task to an authorized Technical Service.

10 - 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.
11 - PEAK LIMITER CIRCUIT
This Led indicates the action of the clipping limiter, avoiding output distortion. Make
sure this Led is not alight permanently! No extra power is obtained in this way and
dynamics are lost.
This clip limiter has two operation modes (hard/soft) which may be selected by a
switch that becomes accessible by removing the upper lid of the amplifier.
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