RCF NX S21-A, Руководство пользователя, Страница: 7 / 20

7
ENGLISH
BEFORE TURNING ON
THE SPEAKER
HOT GND
COLD
CONNECTIONS
The XLR connectors use the following AES standard:
PIN 1 = GROUND (SHIELD)
PIN 2 = HOT (+)
PIN 3 = COLD (-)
On the back panel you will find all the controls, the signal and current inputs. At first verify
that the voltage selector on the speaker is in proper position for your country (115 Volt or
230 Volt).
The switch shall be in proper position (unless moved from unauthorized people), but a
fast check will avoid problems. In case is necessary to change the voltage please call your
vendor or authorized RCF SERVICE CENTRE. This operation require the substitution of the
fuse value and is reserved to an RCF SERVICE CENTRE.
At this point you can connect the power supply cable and the signal cable, but before
turning on the speaker make sure that the volume control is at the minimum level (even
on the mixer output). It is important that the mixer is already ON before turning on the
speaker. This will avoid damage to the speakers and noisy “bumps” due to turning on parts
on the audio chain. It is a good practice to always turn on speakers at last and turn them
off immediately after the show.
Now you can turn ON the speaker and adjust the volume control to a proper level.
BEFORE CONNECTING
THE SPEAKER
A 35 mm socket for mounting the loudspeaker on a speaker stand is provided on the top of
the cabinet. The two fly tracks on top of the cabinet are intended for stacking application in
combination with the NX L23-A line array module (using the STCK BAR NX L23).
WARNING : Never suspend NX subwoofers by the fly tracks on the top. NX subwoofer are
designed for ground application only.
WARNING : Never suspend NX subwoofers by there handles. Handles are intended for
transportation, not for rigging.
NX Series active subwoofers are equipped with a complete system of protection circuits.
Two led on the amplifier back panel indicate the working status of the amplifier: the green
led indicate that the speaker is ON and the red led is on when the protection circuit is active.
The circuit is acting very gently on audio signal, controlling level and maintaining distortion
at acceptable level. If this led is ON for a long period is better to reduce immediately the
signal level from the mixer or from the speaker volume control.
230 Volt, 50 Hz SETUP: FUSE VALUE T10 AL 250 V
115 Volt, 60 Hz SETUP: FUSE VALUE T5 AL 250 V
INSTALLATION
WARNING
PROTECTIONS
VOLTAGE SETUP
(RESERVED TO THE RCF SERVICE CENTRE)