17 cm (6.5") HiFi woofer with coated paper cone, elastic rubber surround and inverse dust-cap. Due to the balanced frequency response also suitable as low-midrange driver for 4-way speaker systems. Due to the special basket design especially suitable as replacement driver for many HiFi speakers.
| Rated power | 60 W |
|---|---|
| Maximum power | 90 W |
| Nominal impedance Z | 8 Ohm |
| Frequency response | fu–7000 Hz |
| (fu: Lower cut-off frequency depending on cabinet) | . |
| Mean sound pressure level | 88 dB (1 W/1 m) |
| Opening angle (-6 dB) | 47°/4000 Hz |
| Excursion limit | +/−6.5 mm |
| Resonance frequency fs | 45 Hz |
| Magnetic induction | 0.8 T |
| Magnetic flux | 314 µWb |
| Height of front pole-plate | 5 mm |
| Voice coil diameter | 25 mm |
| Height of winding | 12 mm |
| Cutout diameter | 150 mm |
| Net weight | 0.97 kg |
| D.C. resistance Rdc | 5.8 Ohm |
| Mechanical Q factor Qms | 2.2 |
| Electrical Q factor Qes | 1.28 |
| Total Q factor Qts | 0.81 |
| Equivalent volume Vas | 22 l |
| Effective piston area Sd | 143 cm² |
| Dynamically moved mass Mms | 16 g |
| Force factor Bxl | 3.9 T m |
| Inductance of the voice coil L | 0.9 mH |
| Connections | 5.2 x 0.8 mm (+)/2.8 x 0.8 mm (-) |
The CLOU is a slim-line 2-band column speaker offering real value-for-money as a key feature, as shown in the choice of two WS 17 E - 8 Ohmfor the low-to-medium frequencies and the SC 10 N - 8 Ohm for the higher frequency range. To guarantee balanced overall sound quality using these less-expensive drivers, the two mid-bass units are physically separated from each other and each has its own enclosure. The lower WS 17 E - 8 Ohm is mounted in a 36-litre compartment. This produces a uniform increase in the frequency response from 60 Hz up to 600 Hz. The upper WS 17 E - 8 Ohm, on the other hand, is mounted in a smaller 16-litre compartment, which causes a slight increase in the range of frequencies between 60 Hz and 150 Hz. However, taken jointly, the two mid-bass units create a harmonious bass foundation which deliberately emphasises the frequencies between 60 Hz and 130 Hz. To ensure a seamless transition between the tweeter and the bass drivers, you need a properly balanced damping circuit to cut out any unwanted peaks and resonance.
The result of this unusual combination of drivers and cabinet is a column speaker that has to be seen and heard to be believed and one which produces a sound quality well above its moderate price range.
