© Pan Acoustics GmbH
V 1.0
Page 12 of 18
Manual
8.3.
Important notice regarding the network cable and amplifi er power
8.3.1. Permissible cable cross sections and lengths
8.3.2. RJ pin assignment
The following information is to ensure the safe operation of the loudspeaker with power amplifi ers.
The maximum cable lengths and cable cross sections that may be used are indicated below.
Pan Acoustics loudspeakers have a high effi ciency. Due to the high sensitivity of the systems, a con-
siderable sound pressure can already be generated from little applied power. The RJ variants of the
loudspeakers therefore do not have to be driven to the maximum in order to produce a sound level
that is suffi cient for the room, e.g. in conference applications.
Network cables are not suitable for transmitting high currents. It is therefore important to adjust the
power of the DSP power amplifi er to the conditions, max. 20 watts (programme) / 60 watts (peak).
Cables have an electrical resistance and can heat up considerably depending on the cable cross
section. To prevent a cable fi re, the cross section of the cable must be suffi ciently dimensioned.
WARNING
1
8
CAT5e or CAT6 cables are suitable for adapted power transmission if their cross sections correspond
to 23 AWG or 24 AWG cables. Shielded cables are NOT required.
For optimum power transmission, only use cables with copper cores.
NOTICE
8.3.3. RJ adapter
CAT cable cross section
Cable length (1 dB attenuation)
Cable length (1 dB attenuation)
22 AWG (0.326 mm²)
36 m @ 8 ohms
72 m @ 4 ohms
23 AWG (0.258 mm²)
28 m @ 8 ohms
56 m @ 4 ohms
24 AWG (0.205 mm²)
22 m @ 8 ohms
44 m @ 4 ohms
The maximum cable length (24 AWG cable) between the power amplifi er and the loudspeaker with RJ
socket should not exceed the length of 100 m @ 4 ohms and 60 m @ 8 ohms.
The contacts of the loudspeaker’s RJ socket are wired in such a way that 4 wires (blue/brown) and 4
wires (green/orange) are combined to one wire (+) and one wire (-). This assignment results in no
polarity reversal when using a crossed network cable.
For connection to a DSP power amplifi er that is not equipped with a correspondingly assigned RJ
socket, but e.g. with a 2-pin connection terminal, an adapter with Keystone socket is available.
