KLING & FREITAG K&F CA 106 - Manual (Page 12)

User's Manual CA 106
KLING & FREITAG GMBH ©1995 - 2006 Version 5.1, 09.11.2006 Page 12 of 26
8. Wiring
The speaker is equipped with two parallel Speakon connectors.
Make sure that all units are switched off and all controls are turned down before con-
necting your CA 106 systems.
− We recommend the use of high-quality speaker cables provided by KLING & FREITAG.
− For connections to the power amplifier inputs, please use 2-pin shielded microphone
cable with high-quality connectors.
− Avoid ground loops (see chapter 8.2 )
− Please pay attention to the respective pin diagrams in this manual!
− Make sure that the +/- polarity of the speakers at the amplifier is correct. When simul-
taneously 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 work-
ing 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 can-
not be located.
− To avoid loss of power, the cables should have a minimum wire gauge of 2.5 mm² -
more for longer cabled distances. A minimum wire gauge can be easily calculated
with the following formula:
If several loudspeakers are connected, the signal can be linked through from one loud-
speaker to the next. Please make sure that the total impedance of the loudspeakers R(
Ω) is
not lower than the minimal impedance indicated on the power amplifier:
1/R
1
+ 1/R
2
+ 1/R
3
+ ... = 1/R
total
8.1 Connecting the Speakon Connector to the Terminal
2.
1. 3.
1.
2.
Important Minimum Wire Gauge (mm²) = Required Cable Length (m)
2 x Speaker Impedance (
Ω)