D.A.S. PS Series, User Manual

Page: 22 / 28

6
Switch ON / OFF
CLIP LED
LEVEL Controls
The main power switch turns the amplifier on.
When the power switch is turned On ("|" position)
the PROTECTION LED illuminates. After approximately
7 seconds the main power supply voltage will be
turned on internally and the ON LEDs will illuminate.
Then the PROTECTION LED will go out and the
amplifier will be ready to be used.
To turn the amplifier off push the power switch ("0"
position). At that moment the main power supply
voltage and the secondary power supply voltage will
turn off internally.
Switch your sound system on from back to front.
Thus, switch on the amplifiers last on your sound
system. Switch sound sources (CDs, turntables) first,
then your mixer, then your processors and crossovers
and finally the amplifiers. If you have more than one
amplifier, switch them on sequentially, one at a time or
use a sequencer.
Follow the reverse order when switching off, and
switch off the amplifiers before any other element on
your sound system.
The clip LED should never be on continuously. This
will distort the signal and may damage the speakers.
In fact, severe clipping is an easy way of burning a
speaker's voice coil.
The amplifiers feature an automatic limiting system
that impedes prolonged saturation, but the dynamic
nature of music signals stops it from being a brick wall
protection. Thus at most, the clip light could be lit
occasionally.
The LEVEL rotary potentiometer is used for
changing the input gain. Although related to output
power, it is not a direct representation of it. Thus, we
can have maximum output power with the gain at mid
position. Similarly, we may have the gain controls at
maximum and not have maximum output if our source
signal is not strong enough.
One way to use the volume controls is to set them
such that when the mixer's faders are at their
maximum level, we are just below clipping level on the
amplifier or clipping very occasionally.
USE
EN
Manual del Usuario
/ PS / User’s Manual