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user’s guide
X
-TREME
via Monti Urali, 31 - 42029 Reggio Emilia (Italy)
●
tel.+39 0522 557735
●
fax.+39 0522 393733
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e-mail: [email protected]
When you supply power to an electroacoustic
system, it is important to switch on the power
amplifier after switching on mixer and control
electronics. To switch off the system, you will
have to follow the inverse sequence, first
switching off power amplifiers.
Connections.
XTQ12
,
XTQ15, XTQ300
,
XTSQ15
e
XTSQ18
loudspeakers are equipped with a couple of
NL4 Speakon connectors. Only the poles
1+/1- of every connector are wired, whether in
the full range system with passive X-over filter
of
XTQ12
,
XTQ15, XTQ300
loudspeakers or
in
XTSQ15
e
XTSQ18
subwoofers.
Using male connector as input, female
connector allows a direct link to other
loudspeakers.
Pins
1+
1-
2+
2-
Positive (+)
Negative (-)
NL4
(XTQ12,
XTQ15,
XTQ300
full range)
(XTQ12,
XTQ15,
XTQ300
full range)
N/C N/C
(XTSQ15) (XTSQ15)
(XTSQ18) (XTSQ18)
Tab.1. NL4 Speakon connector poles.
4 pins Speakon connector:
1+: Positive (+)
- XTQ12, XTQ15, XTQ300; full range;
- XTSQ15, XTSQ18.
1-: Negative (-)
- XTQ12, XTQ15, XTQ300; full range;
- XTSQ15, XTSQ18.
2+:N/C;
2-: N/C;
Fig. 8. NL4 Speakon connector wiring.
Cable lengths.
When you connect a loudspeaker to a power
amplifier, we recommend that the electric
resistance of the cable is below a tenth of the
nominal impedance of one loudspeaker or of
the loudspeakers in parallel. The following
table provides an indication about the
maximum allowed length for different
conductors with different sections.
Maximum Length
Conductor CSA
4 Ohm
8 Ohm
1.0 mm
2
11m
22m
1.5 mm
2
17m
34m
2.0 mm
2
22m
44m
2.5 mm
2
29m
58m
4.0 mm
2
44m
88m
6.0 mm
2
66m
132m
Tab.2. Cable impedance in function of cable
section and length.
