Pyramid Car Audio PA600X - Manual (Page 7)

6
Using headphones
To listen privately, or to monitor sound sources, connect
a pair of low impedance stereo headphones (not
supplied) with 6.35mm plug into the PHONES jack on
the amplifier front panel.
Please listen safely. Follow these recommendations:
Do not listen at extremely high volume levels. Extended,
high-volume listening can lead to permanent hearing
loss.
Always start with the volume control set to a LOW level
BEFORE you put the headphones on. Then gradually
increase the volume as necessary.
Connecting to standard AC power
After making all other connections, set the POWER
switch to OFF position. Then connect the power
cord to a standard AC outlet.
Mounting the amplifier
This amplifier is designed to accept standard rack
mounting installations. Two slots on each end of
the front panel make it suitable for such an
installation.
Tightly secure four mounting screws (not supplied)
through these four slots and into your standard
electronics equipment rack.
Turning the amplifier on
1.Turn on the audio input source equipment which is
connected to the amplifier INPUT jack.
2.Set the amplifier's left and right output level gain
controls to the minimum level settings.
3.Press the power switch to turn the amplifier on.
Using the power meter (PA800X/PA1000X/PA1800X)
The meter POINTER (PA800X/PA1000X) and/or LED
(PA1800X) position indicate the amplifier output power.
For ease of reading in dark environments, the VU meter
(PA800X/PA1000X) is illuminated.
Using the meter range selector (PA800X/PA1000X)
When output power is too strong, the meter's pointer
might continuously swing to the extreme right and
damage or reduce the accuracy of the meter. To protect
the meter, you can use the meter range selector to
control the amplifier's sensitivity to the input power
signal.
Leave the meter range switch in the OUT position to
maintain a 0 dB gain for the mater. When output power
is not strong, leave the meter range switch in the IN
position to allow a +20dB gain.
Using the left and right Output Level controls
Rotate output level gain clockwise to increase, or
counterclockwise to decrease the output power. To get
the best performance with the leaset sound distortion,
always adjust the output level gain so the meter's level
indication does not continuously exceed to the extreme
right.
CAUTION: It is possible to overdrive the amplifier by
setting output level gain too high, which may
cause damage or failure.
About the internal clip circuitry
Special clip circuitry incorporated into your amplifier's
design protects the amplifier and speaker system from
being damaged from overdriving power.
Under normal conditions, the amplifier's clip indicator
will flicker as the output power momentarily exceeds
the level as set by the output level gain selector.
However, under excessive output conditions, the clip
indicator lights remain on continuously, altering you
that the special clip circuitry has become active. When
this occurs, you should simply reduce the output power
level by rotating the Master Volume control
counterclockwise.
Using the A/B Speaker Selector Switch
You can listen to speakers on set A or set B individually
or simultaneously. Simply push in or out the desired
speaker set to make your selection.
Bridge Mode Operation (PA1000X/PA1800X)
The PA1000X and PA1800X can be operated in mono
bridged output mode, if your speakers can handle the
following power output levels:
PA1000X: 320 watts
PA1800X: 420 watts
As shown in the diagram below, connect the speaker's
positive (+) to the amplifier's red speakers left (A/B)
terminals and negative (-) to red speakers right (A/B)
terminals.
The speaker righr (+) on the amplifier is used a negative
(-) terminal for a bridged connection.
NOTE: IT IS SUGGESTED TO USE A 8-OHM SPEAKER
FOR THE ONE CHANNEL BRIDGE HOOKUP. IF
YOU CONNECT TWO CHANNELS' BRIDGE
HOOKUP, PLEASE MAKE SURE THE SPEAKER
IMPEDANCE MUST BE 8-OHM MINIMUM.
STEREO/MONO SWITCH IN
"MONO" POSITION
BRIDGED SPEAKER
HOOKUP