5
P SERIES
3
Installation Guide
Loudspeakers must be installed securely.
Make sure that the supporting structure (walls / ceilings) has the necessary mechanical characteristics for the
loudspeaker weight, without the risk of a fall that could cause damage or injuries.
Use fastening elements suitable for walls / ceilings (e.g. screw anchors for bricks, screw anchors for concrete, etc.).
After connecting a P2110 or P3115 loudspeaker, insulate all unused wires!
3.1 100-Volt Operation
The P2110 and P3115 include an internal 100 V transformer (60W and 120W respectively) different power taps can
be chosen by connecting different wires: black wire for full power, grey wire for half power. The Brown wire must
be connected to the amplifier common output.
For normal low impedance connection, connect the amplifier output “-“ to the brown wire, “+” to the blue wire.
It’s good practice to keep speaker lines well separated from mains cables or microphone cables to avoid inductive
phenomena that may cause hum or noises.
3.2 Choosing the right amplifier
In constant voltage systems the sum of the nominal power tapping of all the speakers connected in parallel to the
same line must not exceed the nominal output power of the amplifier.
For example, up to four P3115 or eight P2110 operating at full power (120W and 60W respectively) can be
connected to a 480 W power amplifier, such as the RCF model UP 4482, alternately, twice the amount of speakers
tapped at half power (grey wire) could be used.
In low impedance systems the overall impedance of the speakers connected to the same output (calculated taking
into account series/parallel connections) must not be lower than the nominal output impedance of the amplifier.
For example 1 P6215 speaker can be connected to each output of an RCF HPS 1500 power amplifier (450watts
per speaker), but it’s also possible to connect two in parallel per channel (total impedance 4
Ω
), in this case each
speaker would have approx. 375watts from the amplifier.
In case the amplifier can provide an output power that is higher than the power
rating of the speakers (for example if you connect a pair of P6215’s to a HPS 2500) it’s important not to drive the
amplifier to the maximum power to avoid distortion or damage to the speakers. It is good practice to ensure all
power amplifiers are run within their comfort zone limits avoiding any long term peak led or limiter led operation.
Model
Black 100 V wire
Grey 100 V wire
P 2110
60 W (166
Ω
)
30 W (333
Ω
)
P 3115
120 W (83
Ω
)
60 W (166
Ω
)
Model
Black 70 V wire
Grey 70 V wire
P 2110
30 W (163
Ω
)
15 W (326
Ω
)
P 3115
60 W (81
Ω
)
30 W (163
Ω
)
