User’s manual – X-Treme Audio Classic Line User Manual
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Fig. 2 XTH loudspeaker system
Originally conceived for live concerts applications, the XTH element
can equally well be used wherever the best reproduction of voice,
songs and solo musical instruments is required.
The cabinet is made of 0.6” (15 mm) thick birch wood able to with-
stand any kind of mechanical stress without vibrating; it is designed
to make cluster installations starting from single modules easier in ac-
cordance with the sound dispersion angles on the horizontal plane.
Being the XTH system conceived to reproduce the frequency range
between 150 and 18k Hz, we recommend use of woofer-type
acoustic speaker, such as the
XTL, to allow full extension of the
frequency response on low notes.
Fig. 3 XTL woofer
Purposely designed to reproduce the first octave of the band, the
XTL is the natural complementary system of the XTH loudspeak-
ers. Its overall dimensions are designed to make the arrangement
of array set up with the other speakers of the series easier. The
XTL is fitted with 18” woofer with high standard dynamics able to
support acoustic power as high as 1700 Watt. The XTL cabinet is
made of plywood with very high structural density and rigidity. The
development and the section of the loading were designed accord-
ing to loudspeaker parameters in order to guarantee the best total
efficiency and extension response. Finally, in order to complete the
series with a subwoofer able to provide reinforcement on the deeper
low frequencies, the
XTS model has been developed.
Fig. 4 XTS subwoofer
The XTS is equipped with high dynamics 18” woofer mounted in
direct radiation in order to reproduce the frequency range between
30 and 90 Hz. Cabinet dimensions are the same as those of other
loudspeaker system of the series, so as to facilitate the stack use.
Fig. 5 XTHPS33 double subwoofer
The
XTHPS33 is a double subwoofer which combines an 18” in
reflex configuration and a 15” in pass band system. The 18” is dedi-
cated to the lowest frequency range, while the 15” works better in
higher octaves. In this way, the first octaves frequency extension
(20÷40 Hz) is coupled with the “punch” effect typical of the second
and third octaves (80÷100 Hz), thanks to the pass-band configura-
tion. All is made to increase efficiency, to reduce distortion, to get
a good “punch” effect without renouncing the range of frequency
response.
The correct use is with electronic crossover set at 150 Hz with 24
dB/oct slope. The best performance is with an amplifier able to de-
liver power into 4 ohm with high current capability.
The subwoofer height corresponds exactly to two XTH and XTL
stacked speakers.
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