Characteristics and
sound properties
The compact Visaton Sub T-20.39 subwoofer
makes use of the same cabinet
as the Sub W-20.39. In contrast, it
uses the more powerful TIW 200
XS high-end woofer. The TIW 200
XS, designed through and through
as a long-stroke driver, achieves an
even lower level of limiting frequency
and an increase in level accuracy.
Its bass reproduction is exceptionally
clear-cut.
As a result, the Sub T-20.39 is suitable
for inclusion in small and medium-
sized, high-grade speaker cabinets
(e.g. Aria, Aria 2, Couplet ),
whether stereo or multi-channel systems.
It is powerful enough to deliver
hard-hitting bass attacks in normal
rooms but is still highly compact
in terms of its external dimensions.
Technical Data
Rated power 120 W
Maximum power 180 W
Nominal impedance 8 Ω
Frequency response (–10 dB) 25 – x Hz
Mean sound pressure level 83 dB (1 W/1 m)
Principle of Housing Bassreflex / bass reflex
Cabinet
Net volume 39 l
Height 396 mm
Width 320 mm
Depth 430 mm
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Extract from Hobby HiFi 5/05
(TIW 200 XS)
The TIW series contains the highest-quality
woofer drivers made by Visaton, the
loudspeaker manufacturer. The TIW 200
XS is the smallest member of this series
of products.
As regards diaphragm stroke, the TIW 200
XS is the largest among the TIW woofers:
with a voice coil depth of no less than 30
mm, this enables a voice-coil extension of
eleven millimetres. This enables it to match
even the TIW 250 in terms of air displacement
and this value comes remarkably close
to the 8W7-3 by JL Audio.
Nine pole piece holes and openings in
the aluminium diecast basket behind the
damper ensure that the air displaced by
the diaphragm and damper can circulate
unhindered and noiselessly. The smaller
vents arranged in a ring around the central
pole piece hole vent the inner space of the
magnet arrangement. This feature gains
in importance as the diaphragm stroke
increases.
Verdict: Visaton‘s subwoofer box TIW 200 XS opens up a
new dimension in woofer construction. This
manufacturer from Haan, Germany offers
one of the best 20 cm woofers available at
a remarkably reasonable price.
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| Component parts list for 1 box
Woofer TIW 200 XS / 8 Ω 1 pc
Bass reflex BR 25.50
tube (full length) 1 pc
Terminal ST 77 1 pc
Damping
material Polyester wool 2 bags
Wood
screws 4 x 20 mm 10 pcs
Cable 2x 2,5 mm² 0,5 m
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Cabinet parts list for 1 box
Parts Size (mm) Quantity
Material:
19 mm MDF or chipboard
Top and bottom
panels 282 x 389 2
Side panels 396 x 389 2
Rear panel 396 x 320 1
Brace 358 x 100 1
Brace2 282 x 100 1
Material:
22 mm MDF or wood
Front panel 396 x 320 1
Building instructions
Simply glue the boards together
(butt-jointed). The chamfers on the
baffle can be applied with a power jig
or circular saw set to 45° or applied
later using an orbital sander.
Next, cut out the openings for the
drivers and the bass reflex tube. If an
amplifier module is to be used, the
cut-out required for fitting it is cut
into the rear wall. If no amplifier unit
is to be used, fit the ST 77 connection
terminal in the rear wall.
Depending on how the amplifier
module is built, it may be necessary
to physically separate the loudspeaker
space from the amplifier module.
In this case, the cabinet will have to
be made larger so as not to steal any
space from the woofer enclosure.
Inner damping
The 4 mats of damping material are
evenly distributed in the cabinet.
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