Inputs & Outputs; Xlr Connection; Ethernet Connection; Speakon - Fbt HORIZON VHA 118SND Operating Manual

XLR CONNECTION

The XLR connection is a type of balanced connection that allows the
connection of devices over long distances without loss of quality due to
the background noise detected.
This is made possible by the presence, as well as by the mass (pin 1), of
two cables: a signal cable (pin 2) and a 180° dephased signal cable (pin 3);
at the opposite end of the signal source, on both these cables, in addition
to the actual signal, the same quantity and type of background noise
possibly detected along the path or inevitably produced by the cables
(not the one for thermal agitation) will be present in phase. The signal will
then be taken from the two cables by difference: in this way the useful
part will be double amplitude while the noise detected or produced
along the path, being present in phase on both cables, will be cancelled
by the difference operation. In the three-pin version it is normally used
for the termination of balanced audio lines but it is often also used for
unbalanced signals creating a short circuit between the mass and the
cold pin. The EIA RS-297-A standard requires that the three-pin XLR
connectors for balanced audio are wired as shown in fig.

ETHERNET CONNECTION

Neutrik etherCON® connectors provide solutions for data transfer and
more in harsh and demanding environments.
The etherCON® series is a robust and lockable RJ45 connector
system optimized for professional audio, video and lightning network
applications.
Thanks to the possibility of networking, the models of the Horizon series
can be remotely controlled thanks to the INFINITO System Management
Suite software.
Support for DANTE Digital Sudio Networking.

SPEAKON

Available on VHA 118S
VHA 118S is a 1-way system, that is, it needs to be driven by an
amplification channel suitably processed with DSP parameters supplied
by FBT. Improper use of the system with incorrect DSP settings can
compromise the reliability of the transducers and exhibit suboptimal
acoustic performance.
Internally there is no passive crossover, the speakers are connected
directly to the SPEAKON connectors.
In the rear dashboard there are two NeutriK Speakon NL4M connectors,
an input and an output. The internal configuration of the connection
allows you to link two speakers with a 4-wire cable and drive them each
with a dedicated amplification channel (see the section dedicated to the
LINK below).
LINKS OF TWO OR MORE SPEAKERS
Attention! In this configuration it is necessary to use a 4-wire SPEAKON
cable between the amplifier and the first speaker! Connect amplifier
output channel 1 to terminals 1+ / 1- and channel 2 to terminals 2+ / 2- of
the SPEAKON INPUT. Channel 1 is used to drive the speakers of the first
connected speaker, while channel 2 is relaunched on terminals 1+ / 1- of
the output SPEAKON which will be connected to the input of the second
speaker with a normal two-pole speakon cable.
In the case of LINK of 4 SPEAKERS it is necessary to use a 4-pole
SPEAKON cable also for the LINKS and consider that SPEAKER number
1 and 3 will be connected in parallel as well as speakers number 2 and
4. The impedance seen by the amplifier is halved , it will therefore
be necessary to choose amplifiers capable of driving the impedance
resulting from the parallel of the connected speakers.
30
INPUT INPUT
XLR bilanciato maschio XLR bilanciato maschio
LINK (uscita) LINK (uscita)
XLR bilanciato femmina XLR bilanciato femmina
The section of the SPEAKON cable must be suitable for the current
supplied to the speakers. We generally recommend using the following
sections:
• 2.5mm length up to 20mt
2
• 4mm 2 over 20 mt
LF+
AMP CH1
SPEAKON
NL4M 1+
INPUT
SPEAKON
NL4M
2+
OUTPUT/
LINK
+
1-
1+ 2+
-
2-
INPUT
INPUTS & OUTPUTS INGRESSI & USCITE
hot hot
cold cold
gr ound gr ound
ground ground
cold cold
hot hot
LF+(linked LF-(linked
LF-
cabinet) cabinet)
AMP CH1
AMP CH2 AMP CH2
1- 2+
2- 1+
INPUT
1+
1-
1-
1+ 2+
2-
2+
OUTPUT
2-
2-
1-
OUTPUT
2+
2-
1+
1-