2 Application and Deployment
2.1 Getting Started
Before you begin, here are a few general rules of thumb:
• Always make sure your loudspeakers are powered off when making connections.
• Do not allow your inputs to clip. Watch the Clip LED on the back of your
loudspeaker. When this LED illuminates, it indicates that the analogto-digital converters are in danger of being overdriven. Overdriving
the converters causes digital distortion, which sounds terrible.
Your PA and attached equipment should be powered on in the following order:
1. Sound sources (keyboards, D.I. boxes, etc.) connected to your mixer
2. Mixer
3. PDA1000 amplifier or PDA1000-equipped Loudspeakers
When it’s time to power down, your system should be turned off in the reverse order.
2.2 Cooling
Whether installed in a rack or in a powered WorxAudio loudspeaker, PDA1000
amplifiers require a minimum of 6” (152.4 mm) clearance for cooling.
Do not restrict airflow to the rear of the speaker enclosure or rack.
CAUTION: To avoid overheating, do not install with the amplifier panels exposed
to direct sunlight. This can heat the amplifier module and reduce performance.
Install sunshades to avoid direct exposure. The maximum ambient temperature for full
performance should not exceed 104˚ F (40˚ C).
CAUTION: Do not install amplifiers where they will be exposed to rain or other
moisture. PDA1000-equipped loudspeakers and PDA1000 amplifiers are not
weatherproof. Protection from the elements must be provided in outdoor installations.
2.3 Important Safety Instructions
WARNING: Failure to observe the following safety precautions may result in
severe injury or death. Installations such as described in this guide should only be
attempted by a trained professional.
• Read these instructions.
• Keep these instructions.
• Heed all warnings.
• Follow all instructions.
• Before installing or suspending any PDA1000-equipped loudspeaker,
inspect all hardware, the enclosure, and associated equipment for damage.
Missing, corroded, or deformed components, or components without
correct load ratings, could significantly reduce the strength of the installation
or placement and should immediately be repaired or replaced.
• Always make sure that the structure the loudspeaker is to be
suspended from has been approved by the building or structural
engineer and will support the weight of all the components of the
speaker system including speakers, speaker cable, wire rope, etc.
• Consult a licensed professional structural engineer
regarding physical equipment installation.
• Do not suspend loudspeakers directly over people.
• Use only hardware that is rated for the load conditions of the
installation and that allows for a possible short-term, unexpected
overload. Never exceed the rating of the hardware or equipment.
• PreSonus strongly recommends that the system be inspected at