Speaker connection
Example: 2x 8Ω speaker, parallel connected results 4Ω
2x 16Ω speaker, parallel connectedresults 8Ω
Damages on the amplifier modules or other electric circuits due to overload or to low nominal impedance are
not covered by any warranty or guarantee!
Installation
Please note that if the device is cold and transported into a warm environment, condensation will form inside the
device. To avoid damage and malfunctions due to condensation / moisture, let the device acclimatise first.
To avoid unpleasant and possibly damaging noises in the loudspeakers, always switch the individual components
on in the direction of the signal path. So first the player, then the mixer and only at the end the power amplifiers.
When switching off, just proceed in reverse order.
Each block of the PowerPac 5002 has a ground lift switch for each power amplifier block on the rear of the device
(see page 7, figure 3 below). This is used to be able to separate the ground loops with potential hum loops in the
case of multiple earthing. However, it can also lead to a deterioration in existing hum loops and grounding by
means of a ground lift switch. If so, you just have to try it out here. Should the signal deteriorate in spite of star-
shaped cabling and grounding by means of a ground lift switch, we recommend that you redo the XLR cabling.
After switching on the device, a self-test and initialization are carried out. The fan runs up once for approx. 4
seconds. During the start-up process, the loudspeaker outputs of the power amplifier are muted and are
activated automatically as soon as the power amplifier is ready for operation. This protective circuit
prevents unpleasant "cracking" noises in the loudspeakers.
The amplifier is ready for operation approx. 10 seconds after switching on and the front control LEDs (page 7,
upper figure, number 2) on each power amplifier block and the central control LED (number 5) light up green.
ATTENTION: The power amplifier has a gain control on the front panel for each power amplifier block! To be on
the safe side, turn it all the way to the left BEFORE switching on.
When you have made all connections, turn the two gain controls on the front panel slowly to the desired value or
the desired volume to the right with the signal being played softly. If you do not hear an output signal on the
connected loudspeakers, check the cabling again before turning the level up any further. In any case, avoid the
limiter LED lighting up continuously (page 7, upper figure, number 4). This not only leads to a loss of sound, but can
also damage connected speakers!
The PowerPac 5002 offers the user numerous possible uses:
Each output stage has 1 output channel with 2500W/4Ω per amplifier block. This power is made available at the
Speakon sockets® in black (wiring 1 + / 1- above or 2 + / 2- below).
This means that several configurations can be operated per power amplifier block (see examples below):
•up to 2 subwoofers á 8 ohms (via upstream crossover or crossover in the subwoofer)
•Up to 2 fullrange tops with built-in crossover of 8 ohms in full range operation
•Up to two monitors or front fill loudspeakers with built-in crossover of 8 ohms in full-range operation
•many other combinations (e.g. multi-room or multi-speaker applications) in which the sum of the nominal
impedance per power amplifier channel does not fall below 4 ohms.
If you connect an 8Ω loudspeaker to the output of the PowerPac 5002, it receives 1250W into 8Ω. If you
add another loudspeaker á 8Ω, the impedance is reduced to 4Ω. The 2500W (which are available at 4Ω) are
now divided between both speakers, and each speaker receives 1250W at 8Ω.
Calculation example: (1250W 8Ω + 1250W 8Ω = 2500W 4Ω)
The following examples give a brief overview of the various configuration options.
10
In order to avoid an overload of your amplifier connect only ONE Speakon®-connector (either the above or the
lower one) with your speakers. Never run speaker configurations with a lower nominal impedance than 4Ohm!
USER MANUAL PowerPac 5002
© PL-Audio GmbH & Co.KG | Siegener Straße 6 | 57482 Wenden | www.pl-audio.de Version: October 2021 V 1.0
