Fbt MLA 608A, Manual

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VERTUS
MLA 608A
14
CONTROLS AND FUNCTIONS
ON: Indicates that the system is on.
PEAK/LIMIT: When the “peak” LED goes on, it indicates that the signal level is
nearing saturation; the “limit” LED indicates that the temperature limiting
circuits have triggered to prevent the system from overheating.
TILT NOT ALLOWED: indicates a “pointing” error; check the maximum
allowed tilt of the sound band in the “allowed angle settings” table.
NETWORK ON: signals that connection to the network has been enabled.
TILT ANGLE: allows you to set the tilt angle of the sound beam. Negative
angles conventionally refer to a sound beam tilted toward the lower part of the
speaker; the maximum tilt limits of the sound beam associated to the covering
angle are shown in the relevant table. If these values are exceeded, a pointing
error will be signaled by the “TILT NOT ALLOWED” LED going on. The
PC/SLAVE position brings the loudspeaker in data receiving mode, with the
option of controlling it via the second speaker connected to it or via the relevant
software on the PC.
BEAMWIDTH: allows you to select the opening angle of the sound beam;
follow the limits listed in the table to properly program the system.
VOLUME: Adjusts the volume of the single loudspeaker.
PRESET: Selects 4 presets, each corresponding to a different equalization,
based on the installation to be performed (FOH for installations in open field or
WALL for fixed installations) and the use made of the system (FLAT for music
or VOCAL for speech).
HP FILTER: selecting the control modifies the “hi-pass” filter to about 100Hz,
thus allowing you to combine use of a subwoofer of the FBT SUBLINE series;
in this case, to obtain the proper alignment of the signal delays of the MLA
loudspeaker and sub, we recommend that you use the relevant “SUB OUT”
signal output.
IN - LINK - SUB OUT : Balanced input/output sockets; “IN” allows you to
connect a pre-amplified signal, such as for instance, the one in output from a
mixer; “LINK” allows you to connect multiple loudspeakers to the same signal,
while “SUB OUT” is used for connecting a subwoofer.
GND LIFT:
USE “EUROBLOCK”
SOCKETS FOR WALL CONNECTIONS.
IN-NETWORK-OUT:
see the description in the "CONNECTION OF
LOUDSPEAKERS" section.
electrical switch for the electrical separation between the mass and
ground circuits, in order to avoid possible mass “loops”, which are the source of
bothersome humming sound.