Paso C400 Series, Instructions For Use Manual

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SOUND COLUMNS
GENERAL INFORMATION
Sound columns are special sound speakers, designed to satisfy
specific directivity requirements. Using the acoustic principle of phase
interferences between two or more loudspeakers, placed near each
other along a vertical axis, it is possible to reduce the vertical angle
of the output sound front. The higher the number of speakers, the
smaller the output angle. Reducing this angle makes it possible to limit
the quantity of sound energy directed towards reflecting surfaces (such
as floors and ceilings), thus increasing the intelligibility of the diffused
program even in environments with a high level of reverberation.
DESCRIPTION
The new columns of the C400 range feature loudspeakers with a
broad response range and high-efficiency tweeters enabling perfect
intelligibility of speech and accurate reproduction of music.
In particular, model C460-TW (waterproof) is suitable for outdoor use,
even in bad weather. All the models have line-repeating coils. The
connections to the various different plugs are available with cables
leading out from the column: for connection refer to the data plate on
the rear of the column. These columns can be turned in any direction
thanks to the S4-B swivel joint included in the supply.
COLUMN OPERATION
For column positioning you shall keep into account the specific output
angles of the various models, as shown in the Specifications. You shall
choose the right height at which the column shall be placed and the
tilting angle towards the distribution area to avoid “dimmed” listening
zones (i.e. outside the column’s sound scattering angle). To cover
a wider area on the horizontal plane, you can mount two columns
side by side at about 60° from each other. Do not use a smaller angle
as interference might occur in the areas where radiation patterns
overlap.
MOUNTING THE COLUMNS
The jointed S4-B support is supplied with the equipment. It can be used
to secure the column to a wall and to point it in the desired direction.
The support should preferably be fixed to the centre of the column,
compatibly with the desired inclination. To do this, use the four screws
supplied with the equipment (Fig. 2). For securing to a wall, use of
screws and/or expansion bolts of the appropriate size in relation to the
weight of the column and the type of wall is recommended. Using a
threaded M6x20 grub screw, as shown in Fig. 3, it is possible to mount
the two sound columns (both of the same type) one on top of the other.
In this way a single sound column is obtained which is twice as high,
with an opening angle on the vertical plane which is further reduced.