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D.A.S. Audio Rf Series User Manual

Page 11

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9

PLACEMENT AND MOUNTING

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 reamplified, 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.

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.

The top panel of model

Rf-118 features a

tripod socket for use with the optional

TRD-6

poles. This allows pole mounting for systems that
have tripod capability. The

TRD-6 is a pole mount

that has a 35 mm termination at the other. The
TRD-6 raises the box 80 cm (32"). Do not use
mounted systems on irregular floors or with
slopes.

Placement

Tripod use

Use on

Rf-118 with TRD-6

Rotating the horns

Weather resistance

reference series cabinets are manufactured from

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.

Models

Rf-12.85, Rf-15.85, Rf-12.64, Rf-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.

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