User's Manual
K&F ‘SW’ Series Subwoofer Systems
KLING & FREITAG GMBH ©1998 - 2015
Version 5.1, 29.05.2015
Page 14 of 14
5.2
Subwoofers with ‘Flying Thread’ M12 (SWi Versions)
If you want to use the SP subwoofers equipped with ‘flying threads’ M12, please read
the following instructions.
Appropriate fastening mechanisms with an external screw thread of M12 and a mini-
mum length of 35 mm! may be screwed on to the M 12 thread inserts. The internal
screw threads in the speaker enclosure are fastened during production with counter-
sunk head screws M12.
The two internal screw threads of the inner enclosure edge are on an L-bracket. This L-
bracket has the function of connecting the adjoining plates of the enclosure. It provides
sufficient tensile strength for flown operations. To guarantee that the enclosure plates
are correctly connected by the L-brackets, only one screw of the enclosure edge may be
loosened at a time. If both screws of an enclosure edge become loose, then, for safety
reasons, the L-bracket will collapse into the enclosure.
If the L-bracket has fallen into the enclosure the loudspeaker must on no ac-
count be used again until it has been repaired by an authorized repair service.
When mounting the speakers, use only fastening mechanisms with threads that extend
at least 35 mm into the speaker enclosure. Take into account the permissible load ca-
pacity of the fastening mechanisms while considering the safety factors. Mount the
speakers using at least two independently operating points. Secure all screws to prevent
loosening.
Warning
Always use flat
washers M12 with
the customary outer
diameter of 37 mm
Loosen only one of
these two screws at a
time!
35 mm minimum
