User's Manual
K&F SONA 5
KLING & FREITAG GMBH © 2017
Version 3.8
Page 7 of 23
3.2
Notes for Mounting the Speakers
Caution
Mount the speakers securely. To avoid injury or damage, always be sure to mount the
speakers securely so that they do not fall. Please note that speakers can move as a result of
vibrations. To prevent them from falling from their mounted position, they must be secured
properly. Run the cables in a way that nobody can trip over them.
The stability of stacked systems (also valid for the use of stands and distance rods!) is
contingent upon the following stability requirement:
Stacked systems may not fall over even if they are inclined by 10° in each direction. If this
requirement is not fulfilled, then it is necessary to take steps to achieve compliance. Possible
measures include strapping it to an appropriate base structure or fastening it using safety
straps.
3.3
Preventing Hearing Damage
Caution
Keep your distance from operating speakers. This equipment is capable of delivering sound
pressure levels in excess of 90 dB SPL, which may cause permanent hearing damage.
3.4
Protecting the Speakers / Operating Safety
In general, audio signals must not be overdriven. This may be caused by mixing consoles,
equalizers, effect equipment, etc. and should be indicated on this equipment. When a power
amplifier is overloaded at the output (clipping), then the amplifier should activate a clipping
warning signal. Power amplifiers can also be overloaded at the input circuit without the
amplifier signalling the clipping, i.e. when there is not sufficient headroom in the input
circuit. We, therefore, recommend turning up the power amplifiers all the way and adjusting
the level before the power amplifier in order to avoid overloading the input circuit. In any
case, the signal must be reduced as soon as it sounds unnaturally distorted.
Operations without CD 44 Controller:
•
To protect the speakers from being destroyed and to avoid fire hazard, they should
only be operated with professional power amplifiers with a maximum rated output
power of 200W@16Ohm.
•
If power amplifiers have power ratings lower than 200W@8Ohm, then it is imperative
that the amplifiers have clipping limiters. Alternately, you can also insert a clipping
limiter before the amplifier.
•
To protect the loudspeaker from mechanical damage when high SPL is required a
highpassfilter of 24 dB/oct. at 60 Hz has to be inserted into the signal chain.
Operations with CD 44 Controller:
•
For optimal performance and operating safety of the SONA 5 speakers we recommend
using the system controller K&F CD 44.
•
When operating the loudspeaker with amplifers without clipping limiter and nominal
amplifier power less than 100W@16Ohm requires to set a Limit Reduction of 3 dB for
the K&F CD 44 controller. You can find more detailed information about this option in
the K&F CD 44 hardware user's manual.
•
The destruction of speakers and the risk of fire as a result of a very rare power
amplifier or speaker defect may not be avoided by the controller in any case.
For damage caused by
•
overloading the speakers or
•
using power amplifiers with other than the recommended maximum output power
we do not assume warranty and excludes liability for possible consequential damage.
