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TIW 200 XS - 8 Ohm

Art. No. 1340

20 cm (8") High-end woofer specially for use as a small subwoofer. The extra-wide elastic cone, the long voice coil and particularly large magnet arrangement give this speaker extremely long excursion. Thanks to the multiple venting of the voice coil (pole piece hole, holes in the pole piece plate, cutouts in the aluminium diecast cone to vent the centring unit from behind) losses and flow noise are minimised. The capton voice coil carrier and the long voice coil enable the driver to withstand considerable loads. The diaphragm is a sandwich construction made up of layers of fibreglass and polyester fabric which makes it particularly rigid and low in resonance. These design features result in high level accuracy and excellent low-range bass imaging even in smaller cabinets.

*Gross price for private customers. Industrial prices are available on request.
Technical Data
Recommended cabinets
Amplitude & Impedance Frequency
Directivity pattern
Waterfall spectrum
Rated power 120 W
Maximum power 180 W
Nominal impedance Z 8 Ohm
Frequency response fu–7500 Hz
(fu: Lower cut-off frequency depending on cabinet) .
Mean sound pressure level 84 dB (1 W/1 m)
Opening angle (-6 dB) 48°/4000 Hz
Excursion limit +/−12.5 mm
Resonance frequency fs 30 Hz
Magnetic induction 1.1 T
Magnetic flux 1050 µWb
Height of front pole-plate 8 mm
Voice coil diameter 38 mm
Height of winding 30 mm
Cutout diameter 190 mm
Net weight 3.5 kg
D.C. resistance Rdc 6.0 Ohm
Mechanical Q factor Qms 5.19
Electrical Q factor Qes 0.5
Total Q factor Qts 0.46
Equivalent volume Vas 51.5 l
Effective piston area Sd 206 cm²
Dynamically moved mass Mms 33 g
Force factor Bxl 8.51 Tm
Inductance of the voice coil L 1.6 mH
Connections 4.8 x 0.8 mm (+)/2.8 x 0.8 mm (-)
Volume/Principle BR-Channel fb fc/QTC
20 l/closed - - 52 Hz/0,77
30 l/closed - - 46 Hz/0,68
20 l/bass reflex BR 19.24 39 Hz -
30 l/bass reflex BR 19.24 32 Hz -
50 l/bass reflex BR 25.50 31 Hz -

Used in / Accessories:

SUB T-20.39

The compact 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 - 8 Ohm high-end woofer. The TIW 200 XS - 8 Ohm, 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.

A complete kit for this suggestion is available via

VIB 170 BP

When developing the VIB 170 BP, the main objective was to create a fairly compact column speaker with an extremely deep bass output, which is capable of reproducing the deepest regions of the audible frequencyspectrum. A common bassreflex housing can reach this aim only partly. Therefore, a very rare type of cabinet has been realized, at least when looking at fullrange-loudspeakers: A double-sided ventilated bandpass. In this layout, a woofer which is mounted on an inner separation wall, is operating on two bassreflex-tuned volumes, a larger one and a smaller one. By means of a subtle tuning of the two cavities, a linear frequency response down to 35 Hz (-3 dB) could be obtained with a housing of only 75 liters. Not until then, the sound pressure level starts to drop rather quickly. The lower cut-off frequency (-10 dB) is located around 24 Hz. Some very large bassreflex speakers are capable of reaching similar cut-off frequencies, but the SPL already starts dropping at much higher frequencies. This is why those kinds of loudspeakers sound less voluminous and deep.
Due to the exceptionally high excursion limit of the TIW 200 XS - 8 Ohm, the maximum obtainable sound pressure level is already physically tangible and more than sufficient even for large listening rooms.

Another design feature of the VIB 170 BP is the wide frequency range of the AL 170 - 8 Ohm. By means of a sophisticated crossover set-up, we have been successful in taking advantage of the outstanding acoustical properties of the AL 170 - 8 Ohm from 100 Hz up to 8 kHz. Not until then, the established ceramic tweeter KE 25 SC - 8 Ohm takes over to render the uppermost 1-2 octaves. By this layout, the widest part of the audible spectrum is reproduced by only one driver, which helps acoustical imaging and leads to a strikingly precise stage arrangement.

So how does such a fancy build sound like? Like the best of both worlds: The spatial precision and dynamic of a good fullrange driver, paired with the brute bass power of the TIW 200 XS - 8 Ohm in the bandpass cabinetand the silky, delicate treble of the excellent ceramic calotte.
At the same time, the whole loudspeaker plays all of a piece and acts absolutely neutral in terms of tonality. Moreover, not a hint of the often-cited "sponginess" of the bandpass principle could be observed, far from it: the low tones sound firm and massive, fully grown, thus becoming to many a much larger boxes.

All around, the VIB 170 BP can be said to be a felicitous loudspeaker, which combines the advantages of a high class fullrange speaker, a multiple way box and a strong subwoofer in one slim cabinet.

TIP: The low frequency part of the VIB 170 BP, without the tweeter and the midwoofer, and without the crossover network, makes a superb subwoofer to complement even large home cinema systems, single- or pairwise.

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