3. PLACEMENT AND MOUNTING
3.1 Placement
Place the speakers ahead of the
microphones. Feedback (howling) occurs when the
microphones pick up the sound that comes out of the
speakers and feed it back to the system. Feedback
can cause damage to the speaker system. If space is
limited, direct the speakers towards areas where
there are no microphones to minimize feedback.
When using a turntable, place the speakers far from
the turntables. If the speaker signal is picked up by the
stylus and re-amplified, low frequency howling will
occur. The use of a very heavy base for the turntable is
recommended.
Bass output for bass cabinets in general will increase
when placed against floors and/or walls. In this case,
you may need to attenuate the gain of the low
frequency section or use attenuation on the low
frequency equalization.
3.2 Tripod use
The more portable models feature a tripod socket for
use with standard 35-mm tripods such as the D.A.S.
TRD-2. Be careful not to raise the units too high on the
tripod, as they may become unstable. Do not use a
tripod on sloped surfaces.
3.3 Use on SUB-18H with TRD-4
The top panel of model SUB-18H features a tripod
socket for use with standard 35 mm poles. This allows
pole mounting for systems that have tripod capability.
The TRD-4 is a 35 mm pole that raises the top box 51
cm (21").
Do not mount systems this way on sloped surfaces.
RF Series
3.4 Rotating the horns
15.64 have rotatable horns. This allows maintaining
the original horn characteristics (wider horizontal
coverage than vertical) when mounted in horizontal
position. This feature is particularly useful in low
ceiling rooms.
To rotate the horns you will need to remove the front
grille first, then the horn. Then carefully rotate the horn
90 degrees, being careful not to disconnect the wires.
Then screw the horn back into place and replace the
grille.
3.5 Weather resistance
phenolic plywood finished with a special water based
black paint that protects the wood from water and
humidity. Additionally, Reference series units have an
acoustically transparent cloth that will further protect
the components from the rain.
Speaker cones are protected against humidity at the
factory with a fine coat of varnish. If the speakers will
be exposed to the elements, you may additionally
treat the paper cones with a water repelling spray or
by applying a coat of varnish. Always bear in mind
that any coating should be very light so as not to
change the weight of the cone significantly.
In fixed installations, do not expose the components
to direct rain. For open-air applications, place the
speakers under some form of canopy or cover.
Manual del usuario/ User´s manual
Models RF-12.85, RF-15.85, Rf12.64, RF-
RF series cabinets are manufactured from
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