KLING & FREITAG K&F SONA SUB II - Manual (Page 14)

User's manual K&F SONA SUB II
KLING & FREITAG GMBH © 2014 Version 1.3 Page 14 of 19
6. Wiring
Warning
Electrical current of loudspeaker signal may be hazardous for the human body.
Always make sure the connectors secured against touch when the equipment is in use.
When using the Phoenix connector:
To guarantee the protection against contact on the Phoenix connector, you may only use the
provided 4-pin Phoenix plug. This is also the case even if you only use two of the Phoenix
connector’s pins.
Always fully insert bared wire ends into the Phoenix plug such that bared parts of wire can
not be touched.
The bared wire ends have to be accurately screwed into the plugs.
When using the Speakon connector:
The Phoenix connector is connected in parallel to the Speakon connector.
To guarantee protection against contact on the Phoenix connector, the provided 4-pin
Phoenix plug must be plugged in during use. This is also the case even if you just use the
Speakon connector. Without the Phoenix plug, the Phoenix connector’s contacts have
hazardous contact voltage!
6.1 Wiring instructions
• Before connecting your SONA SUB II loudspeaker switch off all equipment and turn
down all level controls.
• Only use high-quality speaker cables with a sufficient wire gauge. The wire gauge
depends on the length of the speaker cable.
Minimum Wire Gauge (mm²)
= Required Cable Length (m) / (2 x Speaker Impedance (Ohm))
• For connections to the power amplifier inputs, please use 2-pin shielded microphone
cable (balanced) with high-quality connectors.
• Avoid ground loops.
• Please pay attention to the pin assignments shown in this manual.
• Make sure that the +/- polarity of the speakers at the amplifier is correct. When
simultaneously using power amplifiers from different manufacturers, be sure to use the
correct specific pin configuration. It may be necessary to modify the pin configuration
on the power amplifiers or on the connectors leading to them.
• Upon completing the wiring, ensure that the connected speaker channels are working
in phase. To do so, use i.e. a phase checker. A phase error can also be recognized when
the connected channels are used simultaneously. During simultaneous use the bass
frequencies become notably quieter or the mid-frequencies such as voices cannot be
located.
• If several loudspeakers are connected, the signal can be linked through parallel
from one loudspeaker to the next. Please make sure that the total impedance of the
loudspeakers R(Ohm) is not lower than the minimal impedance indicated on the power
amplifier.
1/R1 + 1/R2 + 1/R3 + ... = 1/Rtotal
7. Operating the Speakers
• Switch off all equipment and turn down all level controls of the mixing console and the
power amplifiers.
• Wire your SONA SUB II systems according to the instructions in this manual.