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W 170 S - 8 Ohm

Art. No. 9025

17 cm (6.5") HiFi woofer with coated paper cone, powerful drive and extended rear pole plate. Special voice-coil and elastic rubber surround for long strokes. Recommended cabinets: Volume/Principle BR-Channel fb fc/QTC 20 l/closed - - 57 Hz/0,74 20 l/bass reflex BR 19.24 (length 14 cm) 44 Hz - 30 l/bass reflex BR 15.34 (length 12 cm) 39 Hz - 50 l/bass reflex BR 15.34 33 Hz -

*Gross price for private customers. Industrial prices are available on request.
Technical Data
Sketch
Recommended cabinets
Amplitude & Impedance Frequency
Directivity pattern
Rated power 50 W
Maximum power 80 W
Nominal impedance Z 8 Ohm
Frequency response fu–8000 Hz
(fu: Lower cut-off frequency depending on cabinet) .
Mean sound pressure level 86 dB (1 W/1 m)
Opening angle (-6 dB) 72°/4000 Hz
Excursion limit +/−10 mm
Resonance frequency fs 36 Hz
Magnetic induction 1.0 T
Magnetic flux 314 µWb
Height of front pole-plate 4 mm
Voice coil diameter 25 mm
Height of winding 12.5 mm
Cutout diameter 148 mm
Net weight 1.1 kg
D.C. resistance Rdc 5.9 Ohm
Mechanical Q factor Qms 2.43
Electrical Q factor Qes 0.66
Total Q factor Qts 0.52
Equivalent volume Vas 38 l
Effective piston area Sd 129 cm²
Dynamically moved mass Mms 13 g
Force factor Bxl 5.4 Tm
Inductance of the voice coil L 1.2 mH
Connections 4.8 x 0.8 mm (+)/2.8 x 0.8 mm (-)
Volume/Principle BR-Channel fb fc/QTC
20 l/closed - - 61 Hz/0,88
20 l/Bassreflex BR 19.24 (length 14 cm) 44 Hz -
30 l/bass reflex BR 15.34 (length 12 cm) 39 Hz -
50 l/bass reflex BR 15.34 33 Hz -

Used in / Accessories:

ALTO III C

The ALTO III c has been designed as a 3-way column speaker with an inside volume of no less than 44+3 litres. The twin bass arrangement using two W 170 S - 8 Ohm drivers in parallel guarantees very powerful low-ranging bass reproduction, that comes across crisply and impressively even with hard-hitting beat.

From around 450 Hz upwards, the 10 cm mid-range cone W 100 S - 4 Ohm takes over, mounted in its 3 litre enclosure. Single instruments and solo voices are reproduced throughout the mid-range in a most tangible, crisp fashion, where the precise definition of virtual sound sources and their associated range layering, so typical for good mid-range cones, comes across well.

Above about 3500 Hz, the sound character is rounded off neatly by the crisp 19 mm tweeter DT 94 - 8 Ohm. The exuberance demonstrated by the ALTO III c promises to put listeners in a good mood and keep them there for several hours of musical pleasure.The ALTO III c has been designed as a 3-way column speaker with an inside volume of no less than 55 litres. The twin bass arrangement using two W 170 S - 8 Ohm drivers in parallel guarantees very powerful low-ranging bass reproduction, that comes across crisply and impressively even with hard-hitting beat.

From around 450 Hz upwards, the 10 cm mid-range cone W 100 S - 4 Ohm takes over, mounted in its 3 litre enclosure. Single instruments and solo voices are reproduced throughout the mid-range in a most tangible, crisp fashion, where the precise definition of virtual sound sources and their associated range layering, so typical for good mid-range cones, comes across well.

Above about 3500 Hz, the sound character is rounded off neatly by the crisp 19 mm tweeter DT 94 - 8 Ohm. The exuberance demonstrated by the ALTO III c promises to put listeners in a good mood and keep them there for several hours of musical pleasure.

Art. No. 5972

STELLA LIGHT

To be clear from the start: these small sized STELLA LIGHT speakers pack a considerable punch. While the outer appearance of the speakers might be described as compact or even sweet, this definitely does not apply to the maximum sound pressure of which they are capable. The combination of universal full-range FRS 8 - 8 Ohm loudspeaker and W 170 S - 8 Ohm woofer stands out because of its unbelievable level accuracy.

The fact that the separating frequency is at a very low 200 Hz benefits the STELLA LIGHT's positioning accuracy and generates an image of the stage that easily earns the "live" label. The FRS 8 - 8 Ohm full-range loudspeaker is remarkably detailed in its output: even the higher frequencies are reproduced accurately and with clear focus. Complemented by the W 170 S - 8 Ohm woofer, this combination covers almost the full range of frequencies required.

Whether used as computer speakers to the left and right of the desk or as a stereo set for the sitting room or bedroom, thanks to the excellent value-for-money price, these speakers can be used universally in many different environments without making too large inroads into your wallet. The simple, effective and intriguingly designed series crossover rounds the system off to produce a low-priced, quality building kit.

After all the cables have been positioned in the cabinet, the cable opening in the divider will have to be sealed off with e.g. hot-melt glue.

Art. No. 5896

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