General Information; Instructions - PROEL DPX1200PFC User Manual

GENERAL INFORMATION

Thank you for having chosen a PROEL product.
DPX PFC is a series of ultra-lightweight power amplifiers able to provide, for professional mobile and fixed PA systems,
a huge amount of power and the maximum performance and portability in a very affordable package.
Thanks to the high-density Class D technology employed in the output stages, we've been able to build very powerful
amplifiers in an ultra-compact and lightweight package. The extremely efficient Switch Mode Power Supply (SMPS) with
Power Factor Correction technology (PFC) helps to reduce further the weight and provides universal mains operation,
delivering constant energy to the loudspeakers regardless of the AC line voltage fluctuations and eliminating the need
for market specific power supplies and related reliability issues.
All models feature a built-in 24dB/octave stereo crossover with BI-AMP and HIGH-PASS options, for easily filtering a
2-way system without the need of additional outboard. Fast-attack precise CLIP LIMITERS guarantee maximum output
without distortion, while a comprehensive protection system safeguards both the speakers and the amplifier.
The electronics is hosted in a feather-light all-aluminum case, able to provide an efficient cooling and, at the same time,
protection and durability over the years.
DPX PFC are power amplifiers offering extraordinary value to professional entertainers, DJ and sound engineers looking
for massive output, excellent performance and absolute portability.

INSTRUCTIONS

1. Power switch
Amplifier is "ON" when the switch is in the "I" position.
2. Power indicator
Green LED: when lighted indicates amplifier has been turned on and AC power is available.
3. Channel LEVEL Control
Rotary level control: in STEREO and PARALLEL operation it attenuates the level of the signal sent to the correspondent
channel of the amplifier, while in BRIDGE operation the channel control 1 operates as single control for the channel
pair set as bridge.
The attenuation ranges from "-80dB" fully closed (the signal is completely attenuated) to "0" fully open, nominal level
(the signal is not attenuated in any way, so is fed to the amplifier channel at the same level at which it arrives on input).
4. Channel SIGNAL METER Indicator
These are five green LED those indicate the presence and the level of the signal at the correspondent amplifier channel
input.
5. Channel LIMIT Indicator
Red LED illuminates when the channel's output is limited. When this LED flashes reduce the input signal level.
6. Channel PROTECT Indicator
Red LED illuminates when the correspondent channel is in protect mode for one of the following reasons:
• The heatsink reaches a temperature above the normal working limit.
• There is a short circuit at the amplifier output wires.
• The amplifier output stages are faulty.
Consequently the channel is muted until the reason of fault is removed.
7. BRIDGE mode indicator
Yellow LED illuminates when the channel pair is in bridge mode.
NOTE: When the channel pair operates in BRIDGE mode SIGNAL, LIMIT and PROTECT LED indicators illuminate
simultaneously, the signal is sent to the channel 1 input only and controlled by channel 1 level control only.
8. PARALLEL mode indicator
Yellow LED illuminates when the channel pair is in parallel mode.
NOTE: When the channel pair operates in PARALLEL mode the signal is sent to the channel 1 input only and controlled
by channel 1 and channel 2 level controls for the respective amplifier channel, the SIGNAL, LIMIT and PROTECT LED
indicators illuminate correspondingly.
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