PROFESSIONAL
User Manual
NL
D
F
Gebruiksaanwijzing
Sicherheitshinweise
Manuel Dʼutilisation
Issue 2
NI575 - NJ577 100W
NI8100 - NJ578 100W
NI8100W - NJ578W 100W
NI10200 - NJ579 200W
NI10200W - NJ579W 200W
NI12300 - NJ580 300W
NI15300 - NJ581 300W
NI15300B - NJ582 400W
NI15600 - NJ581A 600W
NI18600 - NJ582A 600W
INSTALL CABINETS
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SAFETY PRECAUTIONS
For your own and others safety,
please:
• carefully read the following safety
precautions and operating instructions
prior to operation
• observe the following safety precautions
and operating instructions during
operation
• store this manual in a safe place for
future reference.
NJD install cabinets are designed
exclusively to be floor-mounted, pole
mounted using the fitted top-hat, wall
mounted or suspended from built in flying
point. If suspension of the speakers is
required, please ensure that suitable
fixtures are mounted by qualified
personnel.
Safe speaker installation:
• Be sure to mount your speakers on a
solid, stable and level base or stand.
Vibrating floors (e.g. sprung stages), as
well as tables, chairs or similar objects do
not provide reliable support for speaker
enclosures or stacks.
• Setting up your speakers some distance
from the audience area, dance floor,
musicians will minimize the risk of
accident.
• Should local conditions prevent you from
following these safety precautions, please
be sure to secure the speakers so that
they cannot fall or be knocked over.
• If you have any concerns regarding the
installation please consult a PA expert.
Prevention of speaker damage:
Please protect your speakers from
damage due to objects or liquids entering
the enclosure.
Damage and repair:
NJD cabinets must be repaired by
qualified personnel if:
• objects or liquids have entered the
enclosure,
• the speakers have been subject to rain
or excessive moisture,
• the enclosure does not work properly.
• the enclosure has been dropped or
otherwise physically damaged.
Maintenance:
Any additional maintenance/repair work
should be carried out by qualified service
personnel only.
Before you begin
Your NJD Cabinet was carefully packed in
the factory, the packaging is designed to
protect the unit from damage during
transit. Nevertheless, we recommend that
you carefully examine all the packaging
and contents for any signs of damage
which may have occurred during transit.
If the unit is damaged, please do not
return it to NJD, but notify your dealer
immediately. Otherwise, claims for
damage or replacement may not be
granted. Damage claims must be made
by the person who shipped the item.
Connection
Use the Neutrik speakon connectors on
the rear of the unit to connect the NJD
cabinet to your power amplifier.
Improving Performance
The NJD cabinet was designed for use in
a variety of applications. Naturally, the
sound of your speaker cabinet largely
depends on the acoustic properties of the
environment in which it is used. The
following points should help you get the
most out of your NJD speaker system.
HF driver
High frequencies are a crucial part of the
audio spectrum, which ensures clear
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sound and speech intelligibility. Whereas
these frequencies are the most easily
located, they are also the first to be
acoustically blocked. We therefore
recommend that you set up your speakers
so that the HF driver is situated slightly
above the heads of the audience. This will
ensure not only optimal dispersion of the
high-frequency content, but also
considerably improved speech
intelligibility and clarity.
Avoiding feedback
Always place the front-of-house speakers
(the enclosures facing the audience) in
front of the microphones. Use
professional floor wedges, so that the
performers on stage can hear themselves.
Avoiding feedback when using
turntables (e.g. DJ applications)
Turntables often produce low-end
feedback: low frequencies are fed back to
the pickup arm and cartridge and
reproduced again by the speakers.
Common causes of low-end feedback are
speakers set up too close to the turntable,
rooms with a wooden floor or elements
placed on the stage. In such cases, try
moving the speakers away from the
turntable or off the stage and placing
them on a solid support. Another
possibility is to mount the enclosures on
stands, thus minimizing direct contact
between floor and speakers.
Protecting your speakers with a lowcut filter
Low-frequency rumble or extreme low
frequencies can lead to an excessive
displacement of the speaker diaphragm
and in turn to permanent damage. Using
an equalizer or a low-cut/high-pass filter
to eliminate the low frequencies below the
response curve of the speaker can
effectively prevent this. Most equalizers
and sound enhancers provide a low-cut
function
The use of a low-cut filter in the signal
path is especially recommended when
using turntables and/or CD players as
signal sources. CD players often produce
extremely low frequencies, which can lead
to excessive diaphragm displacement.
Frequency Response
All NJD models are equipped with a builtin passive crossover network, which
ensures a smooth transition between the
individual frequency ranges . The
Individual crossovers are tailored to
perfectly suit the cabinet and give the best
day to day performance.
Pin Arrangement
The NJD cabinets are equiped with 2
Neutrik(C) speakon sockets wired in
parallel. The pin arrangement is as
follows;
Speakon Plug
+1 pin + Output
-1 pin - Output
Warranty
The cabinet, crossover and fittings are
guaranteed for 2 years against defective
workmanship or components. The driver
and horn are guranteed for 1 year but as
these are consumable items all warranty
claims need to be approved by the NJD
service department.
All servicing and warranty clams must be
made in the fist instance to your dealer or
supplier.
Amplifier
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