10 cm (4") HiFi low-midrange driver with coated paper cone, elastic rubber surround and 20 mm voice-coil. Suitable as woofer in mini-speaker systems and due to the very balanced frequency response especially suitable as low-midrange driver in 3-way speakers and in subwoofer/satellite systems.
| Rated power | 30 W |
|---|---|
| Maximum power | 50 W |
| Nominal impedance Z | 4 Ohm |
| Frequency response | fu–15000 Hz |
| (fu: Lower cut-off frequency depending on cabinet) | . |
| Mean sound pressure level | 86 dB (1 W/1 m) |
| Opening angle (-6 dB) | 86°/4000 Hz |
| Excursion limit | +/−4 mm |
| Resonance frequency fs | 65 Hz |
| Magnetic induction | 1 T |
| Magnetic flux | 250 µWb |
| Height of front pole-plate | 4 mm |
| Voice coil diameter | 20 mm |
| Height of winding | 8 mm |
| Cutout diameter | 94 mm |
| Net weight | 0.49 kg |
| D.C. resistance Rdc | 3.4 Ohm |
| Mechanical Q factor Qms | 3.04 |
| Electrical Q factor Qes | 0.54 |
| Total Q factor Qts | 0.46 |
| Equivalent volume Vas | 4.49 l |
| Effective piston area Sd | 53 cm² |
| Dynamically moved mass Mms | 5.3 g |
| Force factor Bxl | 3.7 Tm |
| Inductance of the voice coil L | 0.5 mH |
| Connections | 4.8 x 0.8 mm (+)/2.8 x 0.8 mm (-) |
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.
Just because your sitting-room isn't large enough for big speakers, doesn't mean you have to do without high-quality sound. The VISATON subwoofer satellite system, ALTO GENESIS provides excellent listening pleasure in a very small space.
Separating the subwoofer into two cabinets - left and right channels - means that the assignment to the corresponding satellite speaker is hidden. On the other hand, the two subwoofers can also be placed together as mono subwoofers. The bandpass subwoofer cabinet contains the 13 cm long-stroke woofer W 130 S - 8 Ohm. The well-balanced driver, cabinet and frequency parameters enable the subwoofer to be separated off at 110 Hz with a slope rate of 30 dB/octave. That is a level seldom achieved even by active subwoofers. The satellite speakers are also steeply cut off towards the bottom end by means of an optimised crossover unit. This optimised coupling technique means the position of the subwoofer is in reality not determinable.
The small shelf-mounted satellite speakers produce the lively high frequencies and a balanced mid-range and provide the overall spatial qualities required. The tuning frequency cuts in at 110 Hz.
