X-TREME MODULAR LINE
User’s Guide
X-TREME
user’s guide
X-TREME via Monti Urali, 31 - 42029 Reggio Emilia (Italy) ● tel.+39 0522 557735 ● fax.+39 0522 393733 ● e-mail: info@x-tremeaudio.com
Overview.
X-Treme Modular Line loudspeakers are
especially suitable for indoor musical events
in pubs, live-cafes or clubs.
The line consists of 5 models that allow
different solutions. The devices, used in this
line, are high quality devices as neodymium
magnet transducers and the coil is winded on
a kapton former. Crossover filters are
particularly selective so as to obtain more
natural timbre feature at medium frequency
band, important in voice and singing
intelligibility, or rather in excellent sound and
music clearness.
DSP (Digital Signal Processor) biamplified
systems are designed with “Preset” for each
system configuration
The cabinet, showing reduced dimensions
and low weight, is made with a 3/4” (19 mm)
Birch plywood to paint with a special
bicomponent anti-scratch paint to render it
particularly resistant to any weather
conditions.
Fig.1. XTQ12 loudspeaker.
X-Treme Modular Line loudspeakers are light
and with extremely compact dimensions,
nevertheless able to generate acoustic
pressure up to or beyond 130 dB.
Quality reliability and highly professional
performances of Modular Line loudspeakers
are the characteristics that always distinguish
X-Treme products.
XTQ12 loudspeaker is a two-way system with
one 12” woofer and one 1,4” compression
driver coupled with a constant directivity
90°x40° horn. The system is able to
reproduce the frequency range from 55 Hz up
to 19 kHz, presents an 8 Ohm nominal
impedance and can work at 900 W music
power.
Fig.2. XTQ15 loudspeaker.
XTQ15 loudspeaker is an efficient two way
“full range” system with 50 Hz tuned bass
reflex. The tuning duct is equipped with a
sufficient area able to reduce low-frequency
distortions also at the highest power levels
increasing. It’s made up of a 15” cone woofer
and a 1,4” compression driver coupled with a
constant directivity 90°x40° horn.
X-TREME
user’s guide
X-TREME via Monti Urali, 31 - 42029 Reggio Emilia (Italy) ● tel.+39 0522 557735 ● fax.+39 0522 393733 ● e-mail: info@x-tremeaudio.com
XTQ15 loudspeaker shows a frequency
response, ranging from 50 Hz up to 19 kHz,
has an 8 Ohm impedance and is able to
reproduce 1200 W music power.
Fig.3. XTQ300 loudspeaker.
XTQ300 loudspeaker completes the “full
range” Modular Line models. It’s a 2-way,
extremely compact loudspeaker, with a very
good power handling. It is equipped with two
8” cone woofers, whereas the tweeter is
constituted by a constant directivity 90°x40°
horn coupled with a 1” coal fibre compression
drive. The cabinet is constructed with a Birch
plywood with high density and high rigidity
structure. To achieve a significant low
frequency reinforcement, the line is completed
by two subwoofer types: XTSQ15 e XTSQ18.
Fig.4. XTSQ15 loudspeaker.
XTSQ15 is a subwoofer in reflex
configuration, with one 15” cone subwoofer,
equipped with a powerful neodymium magnet.
The cabinet is constructed with Birch plywood
and inside is completely covered with sound-
proofing material in order to guarantee a right
deadening of stationary waves.
XTSQ15 subwoofer is able to reproduce
2000W music power, shows an 8 Ohm
impedance, while the frequency response
covers the audio spectrum starting from 55 Hz
up to 180 Hz.
Fig.4. XTSQ15 loudspeaker.
X-TREME
user’s guide
X-TREME via Monti Urali, 31 - 42029 Reggio Emilia (Italy) ● tel.+39 0522 557735 ● fax.+39 0522 393733 ● e-mail: info@x-tremeaudio.com
XTSQ18 is a subwoofer in reflex configuration
with one 18” cone transducer, showing a
frequency response from 35 up to 130 Hz,
presents an 8 Ohm impedance and is able to
reproduce a 4000W peak power.
Fig.5. XTSQ18 loudspeaker.
The coil is make to enamelled copper for
assure the highest thermic overload
resistance (300° C). The cone is water
repellent, resistant to any extreme weather
conditions. The cabinet is constructed with a
Birch plywood with high density and high
rigidity structure.
Instructions for use
For single use, the Modular Line loudspeakers
can be used directly on the ground or
suspended with threaded insert OC6
Fig. 6 Loudspeaker overhung by OC6
accessory.
For the horizontal suspension of loudspeaker,
it’s possible to use the stirrup suspension
STDU. Several loudspeakers can be placed
side by side to achieve a uniform sound
coverage.
Fig. 7 Loudspeaker overhung on a stirrup
STDU and C36-M10 accessory
X-TREME
user’s guide
X-TREME via Monti Urali, 31 - 42029 Reggio Emilia (Italy) ● tel.+39 0522 557735 ● fax.+39 0522 393733 ● e-mail: info@x-tremeaudio.com
The configuration “Sat+Sub”, composed of
two systems XTQ12 and XTSQ15, XTQ15
and XTSQ18 allows to obtain an extended
and complete frequency response, enriched
at lower frequencies.
Fig. 8 Configuration “Sat+Sub”
Stacking on floor are usually made positions
loudspeakers one up one. In this case there
are “coupling effect” on middle-high frequency
band and increase vertical directivity and
enable a perfect angular coverage. Quality
and limited dimensional in comparison with
loudspeakers power make Modular Line
loudspeakers specially recommended for
difficult acoustic environment.
Safety instructions.
It is important that loudspeaker systems are
used in a safe manner. 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 90 dB, if
people are exposed for a long period. Never
stand close to loudspeakers driven at high
level. In case of ground stacking, ensure that
the floor or stage is level and solid. Do not
ground stack speakers too high, in outdoor
applications, where wind could topple the
stack. Flying systems should only be
assembled from trained and experienced
crew, working in association with professional
riggers.
Stacked or flown.
Although flown systems are generally
preferred by most sound engineers, there are
good arguments to support both solutions. In
many cases the answer is dictated by logistic
constraints that are venue-specific, i.e.,
sometimes it isn’t simply possible to fly PA.
Stacking on stage lowers the perceived sound
image to stage level, which is beneficial in
small venues. Stacking also offers more low
frequency SPL due to enhanced floor
coupling. Flying system is the best solution to
achieve uniform sound pressure level and
even tonal balance over the entire audience,
provided that the number of elements arrayed
is sufficient to provide the necessary
coverage.
XT-ST100
X-TREME
user’s guide
X-TREME via Monti Urali, 31 - 42029 Reggio Emilia (Italy) ● tel.+39 0522 557735 ● fax.+39 0522 393733 ● e-mail: info@x-tremeaudio.com
Stacking Guidelines.
The designer need to know if the audience is
standing or seated; if used in flown system
the bottom of the array or cluster should
always be higher than the ears of the first
rows of the audience. If the bottom of the
array is too low, the first rows receive too
much SPL and audience members directly in
front of the system behave as an acoustic
screen for the following rows.
Subwoofers.
Subwoofers are used to extend the frequency
response of the “full range” base system
XTQ12, XTQ15, XTQ300 down to 35 Hz and
to increase the overall SPL without increasing
the potential for audience hearing loss.
General guidelines for the use of
subwoofers.
The number of subwoofers to be used
depends on 3 parameters.
1) Number of XTQ12, XTQ15 o XTQ300
elements.
The standard recommended number of
XTQS15 or XTQS18 subwoofers corresponds
to 1:1 ratio (see XTQ12 + XTSQ15, XTQ15
+XTSQ18 or XTQ300 + XTSQ15 configurat-
ions).
2) Type of musical event to reproduce.
Standard subwoofer ratios are recommended
for classical music or corporate events. For
those applications, subwoofers act as a
low frequency extension for base systems
and provide approximately 6 dB of low
frequency contour. In this case, the overall
system behaves as an extended bandwidth
3-way system in biamplification.
For live applications with rock music sound
reinforcement, the configuration with XTQ12
and XTQ15 and with two XTSQ15 o XTSQ18
subwoofers can be used.
3) Location or installation types.
In outdoor applications, when subwoofers are
located on the ground, the ratio remains
unchanged.
Amplification.
Modular Line loudspeakers are designed to
be used with professional power amplifiers,
able to produce the following output power:
XTQ300
XTQ12
XTQ15
XTSQ15
XTSQ18
full range: 500 W (@ 8 Ohm)
full range: 450 W (@ 8 Ohm)
full range: 600 W (@ 8 Ohm)
subwoofer: 1000 W (@ 8 Ohm)
subwoofer: 1000 W (@ 8 Ohm)
Particular attention will have to be paid to
avoid amplifier clipping. It is important
to underscore that a sub-dimensioned power
amplifier could easily reach clipping,
particularly damaging phenomenon, whether
for acoustic and psychoacoustic reasons or
for electronic causes. In musical field, we
must underline that signals have a high
dynamic content and a power amplifier could
operate in saturation region, just introducing
signal clipping, or rather a non linear signal
distortion. In those conditions, power amplifier
will produce more power in comparison with
nominal undistorted condition. The use of
power amplifier with output power higher than
the recommended output power is unsuitable,
too. We have also to avoid in electronic
devices switching bursts, that could cause
instantaneous peaks higher than the
loudspeaker instantaneous power.
X-TREME
user’s guide
X-TREME via Monti Urali, 31 - 42029 Reggio Emilia (Italy) ● tel.+39 0522 557735 ● fax.+39 0522 393733 ● e-mail: info@x-tremeaudio.com
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 mm2 11m 22m
1.5 mm2 17m 34m
2.0 mm2 22m 44m
2.5 mm2 29m 58m
4.0 mm2 44m 88m
6.0 mm2 66m 132m
Tab.2. Cable impedance in function of cable
section and length.
X-TREME
user’s guide
X-TREME via Monti Urali, 31 - 42029 Reggio Emilia (Italy) ● tel.+39 0522 557735 ● fax.+39 0522 393733 ● e-mail: info@x-tremeaudio.com
System configurations.
Modular Line loudspeakers can be used with
analog controllers by which it is possible to set
a specific equalization, X-over frequency and
limiter functions. More complex set-up could
be obtained by the use of DSP. Modular Line
systems can be controlled by Digital Speaker
Management System XT266 or by any
professional digital controller. Whatever
controller you use, it is important that limiters
are set with very fast attack to prevent
amplifier clipping. This fact demands that
limiter threshold of the control device is
consistent with amplifier sensitivity. Such a
working system, with power amplifiers of
recommended output power and used by
technical specialist, appears to be protected
from “over-utilization”. We suggest to refer to
used controller manual to have more
informations about setting of limiter threshold.
Modular Line loudspeakers, controlled by a
properly set controller, show an essentially
linear on-axis frequency response. About
XTSQ15 e XTSQ18 subwoofers, we suggest
to use a X-over frequency between 90 Hz and
110 Hz. Whenever it is necessary, you can
utilize equalizations for compensating
particular environmental acoustical conditions.
Examples:
Fig. 9. Configuration “Sat+Sub” with 2 XTQ15 loudspeakers and 2 XTSQ18 subwoofers.
XTQ15 XTQ15
XTSQ18 XTSQ18
XT 2000
XT 3400
XT-ST100 XT-ST100
X-TREME
user’s guide
X-TREME via Monti Urali, 31 - 42029 Reggio Emilia (Italy) ● tel.+39 0522 557735 ● fax.+39 0522 393733 ● e-mail: info@x-tremeaudio.com
Fig. 10. Configuration “Sat+Sub” with 2 XTQ12 loudspeakers and 2 XTSQ15 subwoofers.
Fig. 11. Configuration “Sat+Sub” with 2 XTQ300 loudspeakers and 2 XTSQ15 subwoofers.
XTQ12 XTQ12
XTSQ15 XTSQ15
XTQ300 XTQ300
XTSQ15
XT 2000
XT 3400
XT 2000
XT 3400
XT-ST100 XT-ST100
XT-ST100 XT-ST100
XTSQ15
X-TREME
user’s guide
X-TREME via Monti Urali, 31 - 42029 Reggio Emilia (Italy) ● tel.+39 0522 557735 ● fax.+39 0522 393733 ● e-mail: info@x-tremeaudio.com
Fig. 12. Configuration with 2 XTQ12 loudspeakers and 4 XTSQ15 subwoofers on the ground.
Fig. 13. Configuration with 2 XTQ15 flown loudspeakers and 4 XTSQ18 subwoofers on the ground.
XTQ12
XTQ12
XTSQ15 XTSQ15
XT 2000
XT 3400
XT-GN
C36
STD U- Q12
XTQ15 XTQ15
XTSQ18 XTSQ18
XT 2000
XT 3400
XT-GN
C36
STD U - Q15
X-TREME
user’s guide
X-TREME via Monti Urali, 31 - 42029 Reggio Emilia (Italy) ● tel.+39 0522 557735 ● fax.+39 0522 393733 ● e-mail: info@x-tremeaudio.com
Fig. 14. Configuration with 2 XTQ300 flown loudspeakers and 4 XTSQ15 subwoofers on the ground.
XTQ300 XTQ300
XTSQ15
XT 2000
XT 3400
XTSQ15
XT-GN
STD U - Q300
C36
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