Samson POWER AMPLIFERS PG3800 - Manual (Page 7)

Guided Tour - Front Panel
1: Handle - For easy transport while carrying, or while rack mounting, the PG amplifier features two die-cast handles located con-
veniently on the left and right side of the front panel.
2: POWER switch - Use this to power the PG Series on or off. The internal LED lights whenever the PG Series is powered on.
3: Vent -The PG series amplifiers stay cool thanks to their twin, forced-air cooling tunnels. Cool air is drawn through the front
panel vents, reducing the temperature of the internal components while forcing the heat out the rear vents. The fans will actually
sense the internal temperature and adjust their speed to maintain the optimum cooling conditions.
4 VOLUME controls - These 42-position detented controls allow you to precisely adjust the input level of the signal arriving at
the rear-panel input jacks (see #2 on the following page). At their fully counterclockwise position (labeled “MIN”), the signal is
attenuated by 80 dB (essentially completely off). At their fully clockwise position (labeled “MAX”), the controls are at unity gain
(that is, no attenuation). When +4 dBu of signal arrives at the input jacks and the Channel input level controls are set to their fully
clockwise “MAX” position, the PG Series delivers full power output.
5: POWER LED - The front panel LED indicator will illuminate when the Power switch is set to the “ON” position.
6: PROTECT LED - This goes on for approximately five seconds whenever the PG Series is powered on and then turns off (you’ll
hear a “click” when it does so). The Protection LED will also light when overheating or other severe problems occur (see page 8
in this manual for more information). It is normal for the Protection LED to fade slowly when the amp is powered off. When lit,
no signal is provided to any connected speakers, thus muting them and preventing any “thump” from occurring. For a complete
description of the conditions under which this light goes on, see the section entitled “The PG Series Protection Circuitry” on page
8 of this manual.
7: CLIP LED - The CLIP segment lights whenever the channel is outputting signal at full strength. For the best signal-to-noise ratio,
the (CLIP) segment should light occasionally during peak levels; if it lights frequently, you may be overloading the PG Series and a
distorted (“clipped”) signal is probably being output. If this occurs and backing off the Input Level control delivers too low an out-
put level for your application, consider using Bridge mode (see the “Bridge and Parallel Modes” section on page 9 in this manual
for more information).
8: SIGNAL LED - The front panel LED indicators continuously monitor the power output level for the corresponding channel. The
SIGNAL LED lights whenever output signal is present
1 2 3 4
7 8 7 8
5 6 4 1
3