X SERIES
USER GUIDE
X15 and XS18
X15 and Xs18 User Guide
Contents Page
1. Introduction 2
2. Unpacking 2
3. X15 and Xs18 Overview 2
3.1 X15 Full-range system 3
3.2 Xs18 Sub-bass System 4
3.3 Mounting configurations 5
4. Safety first 6
5. Amplification 7
6. Connections 8
7. System configurations 9
8. Warranty 11
9. Technical Specifications 12
MARTIN AUDIO
10. Contacts 13N D O N
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X15 and Xs18 User Guide
1. INTRODUCTION
Thank you for purchasing a NEXT X-line Speaker system. The
X-line is a range of portable loudspeaker enclosures designed for
a variety of portable sound reinforcement and club applications.
X-line products covered in this user’s guide include the X15 full-range
system and Xs18 sub-bass.
For optimum performance, it is recommended that X-line systems
be used with the CVA LMS-240, digital signal processor . The controller provides
crossover, delay, EQ and limiter functions for X-line configurations
and may also be used as an optional equaliser and limiter for the full-range
X15. Please refer to LMS240 user’s guide for further
information.
2. UNPACKING
Each Next X-line Series loudspeaker is built to the highest
standard and thoroughly inspected before it leaves the factory. After
unpacking the system, examine it carefully for any signs of transit damage
and inform your dealer if any such damage is found. It is suggested that
you retain the original packaging so that the system can be repacked at a
future date if necessary. Please note that Next-proaudio and its distributors
cannot accept any responsibility for damage to any returned product
through the use of non-approved packaging.
3. X15 and Xs18 OVERVIEW
The X-line X15 and Xs18 are ideally suited to applications that
require very compact size, high output and ease of transportation. They
also make ideal fill-in speakers for use with larger X-line systems and
their very small size is particularly useful in situations that require visually
discrete monitors.
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X15 and Xs18 User Guide
3.1 X15 Full-range system
The X15 is a 2-way passive system, designed to provide exceptional club
sound reinforcement and stage monitoring from a very compact enclosure.
It features a powerful 15” low frequency driver and a 1.4" HF compression
driver mounted on a constant directivity 50º-100º H x 50° V assimetrical horn.
Depending on the application, the HF horn can be rotated to allow the
multi-angle enclosure to be used in either its vertical or horizontal
orientation. To rotate the horn for horizontal use, remove the grille (see
below), unscrew the horn and rotate it through 90 degrees.
The enclosure is provided with 14 M6 threaded inserts . It is also
provided with a top hat fitting for use with a tripod or as a pole socket for
mounting above a X-line subwoofer.
The use of a LMS240, Digital Signal Processor, in the X-line is optional, but using
it without Controller will result in poor sound quality and may damage the
components.
Applications:
Theatres;
Night clubs;
Live club performance;
High powered Floor monitor.
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X15 and Xs18 User Guide
Grille Removal
To remove the grille, first remove all grille retaining screws. The grille can
then be removed by inserting a flat bladed screwdriver under one of the
notches at the top and bottom of the grille then gently levering the grille out
of the side channels
3.2 xs18 Sub-bass System
The Xs18 sub-bass system can be used with the X10, X12 and X15 and X212 in
order to extend and increase the total low frequency output power. The Xs18 is a
Band-Pass sub-bass and provides a powerful bass from a long excursion 18” driver
with 100mm voice coil and it will extend the frequency response of the complete
system to below 30Hz. This cabinet is made with 18mm birch plywood.
The use of a LMS240, Digital Signal Processor, in the X-line is optional, but using
it without Controller will result in poor sound quality and may damage the
components. Depending on the type of Mid/High speaker, this sub-bass system
can work with a active crossover in frequencies between 20Hz to 80Hz (24
db/octave).
The Xs18 is provided with a top hat fitting that can be used as a pole socket
to mount an X10, X12 and X15 above the enclosure.
Applications:
Theatres;
Night clubs;
Live club performance;
Portable or installed audio-visual reproduction.
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X15 and Xs18 User Guide
Mounting Configurations
Vertical alone Vertical (more than one)
Horizontal Alone Horizontal (more than one)
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X15 and Xs18 User Guide
4. SAFETY FIRST
It is important that loudspeaker systems are used in a safe manner. Please
take some time to review the following points concerning safe use of
X-line Series loudspeakers.
Professional loudspeakers are capable of producing extremely high sound
levels and should be used with care. Hearing loss is cumulative and can
result from levels above 90dB if people are exposed for a long period.
Never stand close to loudspeakers driven
Tripod Mounting
The X15 incorporate a pole mounting socket to facilitate mounting
on tripod stands. When using stands, the following precautions are
advised:
Ensure that the stand will support the weight of the speaker by checking
the stand manufacturers rating.
Make sure that the stand is placed on a level surface and that its legs are
fully extended.
Do not place more than one speaker on each stand.
Run cables so that they do not present a trip hazard which could pull the
speaker over.
When used outdoors in the wind, it may be necessary to add some weight
to the base of the stand.
When using a pole mount with a sub-bass system, observe similar
precautions.
Stacking
Ensure that the floor or stage is level and solid.
Do not stack speakers too high outdoors where winds could topple the
stack.
Be aware that speakers producing very high power levels can move or
creep. To avoid this, place friction material between the floor and speaker
and between each speaker.
Rigging and Suspension
WARNING: Suspending the system should only be done by qualified
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X15 and Xs18 User Guide
personnel following safe rigging practices. Secure fixings to the building
structure are vital. Seek help from architects, structural engineers or other
specialists if in any doubt.
X-line Series enclosures are designed for portable applications, but can
be suspended singly by means of the threaded inserts provided or by
compatible Next-proaudio wall Brackets. The X15 enclosures are fitted
internally with steel corner reinforcement brackets to ensure that each
cabinet is strong enough to be hung from its top.
The common practice of using commercially available eye bolts for
suspension should only be undertaken with great caution. Eye bolts are
strongest along the thread axis. Angling the enclosure will result in an angle
pull and it is important to use eye bolts that are safe in these
circumstances. Only forged shoulder eye bolts should be considered and it
is important that the thread length is at least 30mm. A flat washer should be
inserted between the eyebolt and the enclosure. Formed eye bolts i.e.
those which are formed from a steel rod bent into an eye should be
avoided.
5. Amplification
The X15 and Xs18 systems are designed to be used with professional power
amplifiers and Next-proaudio recommends Next Amplifiers.
X15 Next MA3200 ( 800w, stereo at 8 ohm)
Xs18 Next MA1700 ( 1700w, bridge at 4 ohm, when working alone)
Xs18 Next MA3200 ( 1200w, stereo at 4 ohm, one Xs18 on each channel)
Care should be taken to avoid amplifier clipping. It is important to
understand that a low power amplifier driven into clipping is more likely to
damage a loudspeaker than a higher power amplifier used within its ratings.
This is because music signals have a high peak-to-average "crest" factor.
When an amplifier is severely overdriven, its output waveform is clipped (its
peaks are squared off) – reducing the crest factor. In extreme cases, the
waveform can approach that of a square wave. An amplifier is normally
capable of producing far more power under these conditions than its
undistorted rated power output. The use of very high power amplifiers with
outputs greater than those recommended is discouraged.
Care should be taken to avoid switch-on surges, which can result in
momentary power peaks in excess of specified ratings. When powering up
a sound system it is important to switch on the amplifiers after the mixer
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X15 and Xs18 User Guide
and control electronics have stabilised. When powering down the system,
reverse the sequence and switch off the amplifiers first.
6. CONNECTIONS
Each connector panel has two Neutrik® Speakon® connectors wired in parallel
with each other. The second connector allows the use of a short link lead to power
another parallel loudspeaker. The connectors are wired as follows:
X15
Xs18
NL4 Connector ( 2+ and 2-)
NL4 Connector ( 1+ and 1-)
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X15 and Xs18 User Guide
MA1700
0 dB 0 dB
-1 -1
-3 -3
-15 -15
-20 -20
-40 -40
CHANNEL 1
ACTIVE ACTIVE
SIGNAL SIGNAL
LIMIT
PROTECT
LIMIT
PROTECT
CHANNEL 2
-6 -6
-12 -12
POWER
-9 -9
0
0
0
0
NE T
IN
OUT
Power Out
MA1700
0 dB 0 dB
-1 -1
-3 -3
-15 -15
-20 -20
-40 -40
CHANNEL 1
ACTIVE ACTIVE
SIGNAL SIGNAL
LIMIT
PROTECT
LIMIT
PROTECT
CHANNEL 2
-6 -6
-12 -12
POWER
-9 -9
0
0
0
0
NE T
IN
OUT
Power Out
7. System Configurations
There are many different system combinations possible when the X15
full-range systems are used with the Xs18 and X-line sub-bass
systems. Shown below are some typical configurations. Please note that
for simplicity each line in the diagram represents a pair of wires.
X15 Full-range speaker
Depending of the amp, it can be linked 2 X15
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X15 and Xs18 User Guide
MA1700
0 dB 0 dB
-1 -1
-3 -3
-15 -15
-20 -20
-40 -40
CHANNEL 1
ACTIVE ACTIVE
SIGNAL SIGNAL
LIMIT
PROTECT
LIMIT
PROTECT
CHANNEL 2
-6 -6
-12 -12
POWER
-9 -9
000
0
NE T
MA1700
0 dB 0 dB
-1 -1
-3 -3
-15 -15
-20 -20
-40 -40
CHANNEL 1
ACTIVE ACTIVE
SIGNAL SIGNAL
LIMIT
PROTECT
LIMIT
PROTECT
CHANNEL 2
-6 -6
-12 -12
POWER
-9 -9
000
0
NE T
OUT 1
Xs18
IN L
IN R
OUT 3
OUT 2
Xs18
MA3200 (Stereo) .
X15
X15
MA1700
0 dB 0 dB
-1 -1
-3 -3
-15 -15
-20 -20
-40 -40
CHANNEL 1
ACTIVE ACTIVE
SIGNAL SIGNA L
LIMIT
PROTECT
LIMIT
PROTECT
CHANNEL 2
-6 -6
-12 -12
POWER
-9 -9
000
0
NE T
MA1700
0 dB 0 dB
-1 -1
-3 -3
-15 -15
-20 -20
-40 -40
CHANNEL 1
ACTIVE ACTIVE
SIGNAL SIGNAL
LIMIT
PROTECT
LIMIT
PROTECT
CHANNEL 2
-6 -6
-12 -12
POWER
-9 -9
000
0
NE T
MA3200 (stereo)
MA3800 (stereo).
OUT 1 OUT 2
OUT 3
OUT 4
X15
X15
IN L
IN R
Xs18
Xs18
X15 with Xs18
X15 with Xs18
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X15 and Xs18 User Guide
SPECIFICATIONS
X15
Frequency Range ( -6dB )
53Hz-18kHz
Sensitivity 1w/1m half space
100dB
Maximum SPL ( calculated )
129dB
Power ( AES )
800W
Impedance
8 Ohms
Dispersion ( HxV )
50º-100º x 50º
Drivers ( LF/HF )
15"/1.4"
Connectors
2 NL4
Dimensions ( WxHxD )cm
46.5x72.5x38.5
Weight
29kg
8. WARRANTY
NEXT-PROAUDIO X-line Series products are warranted against manufacturing
defects in materials or craftsmanship over a period of 2 years from the date of
original purchase. During the warranty period NEXT-PROAUDIO will, at its’
discretion, either repair or replace products which prove to be defective provided
that the product is returned in its original packaging, shipping prepaid, to an
authorized NEXT-PROAUDIO service agent or distributor.
NEXT-PROAUDIO cannot be held responsible for failure or damage caused by
unauthorized modifications, improper use, negligence, exposure to inclement
weather conditions, act of God or accident, or any use of this product that is not in
accordance with the instructions provided by NEXT-PROAUDIO and this manual.
This warranty is exclusive and no other warranty is either expressed or implied.
This warranty does not affect your statutory rights.
9. Technical Specifications
X15
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X15 and Xs18 User Guide
SPECIFICATIONS
XS18
Frequency Range ( -6dB )
30Hz-135Hz
Sensitivity 1w/1m half space
102dB
Maximum SPL ( calculated )
133dB
Power ( AES )
1400W
Impedance
4 Ohms
Drivers
18"
Connectors
2 NL4
Dimensions ( WxHxD )cm
79x50.5x63.2
Weight
54kg
Xs18
10. Contacts
In case of any doubts or any information just:
Write us:
Next-proaudio
Rua da Venda Nova, 197
4435-469 Rio-Tinto
Portugal
Contact us:
Tel. +351 22 489 00 75
Fax. +351 22 480 50 97
Send a e-mail:
info@cva.pt
info@next-proaudio.com
Search our websites:
www.next-proaudio.com
www.cva.pt
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