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User's Manual
7.2
Passive Mode (without Controller)
The PASSIO system is designed so that it can be operated passively without a controller
directly on a power amplifier. Follow the instructions in chapter "Protecting the Speakers /
Operating Safety" beginning on page 7.
•
For safe operation, they must only be operated with professional power amplifiers with
a maximum rated output power of 600 W @ 8 Ohm (equiv. 1200 W @ 4 Ohm).
•
If power amplifiers have power ratings lower than 300 W @ 8 Ohm, 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.
KLING & FREITAG GMBH © 2017
Version 3.0
K&F PASSIO
Page 14 of 26
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