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G 20 SC - 8 Ohm

Art. No. 1185

Magnetically shielded 20 mm (0.8") High-end textile dome unit for use at tweeter frequencies of 3,000 Hz and above. The optimised dome shape and damping felt on the pole piece ensures a very balanced frequency response without resonance and excellent omnidirectional sound distribution. The powerful magnet drive and ferro-fluid cooled voice coil guarantee both high efficiency and excellent power handling capabilities.

*Gross price for private customers. Industrial prices are available on request.
Technical Data
Sketch
Amplitude & Impendance Frequency
Directivity pattern
Nominal impedance Z 8 Ohm
Frequency response 1200–30000 Hz
Mean sound pressure level 88 dB (1 W/1 m)
Opening angle (-6 dB) 180°/8000 Hz
Resonance frequency fs 1890 Hz
Magnetic induction 1.3 T
Magnetic flux 200 µWb
Height of front pole-plate 2.5 mm
Voice coil diameter 20 mm
Height of winding 2 mm
Cutout diameter 66 mm
Net weight 0.39 kg
D.C. resistance Rdc 4.8 Ohm
Mechanical Q factor Qms 0.36
Electrical Q factor Qes 1.34
Total Q factor Qts 0.28
Effective piston area Sd 4 cm²
Dynamically moved mass Mms 0.15 g
Inductance of the voice coil L 0.02 mH
Connections 4.8 x 0.8 mm (+)/2.8 x 0.8 mm (-)
Peak power handling with high pass 140 W (12 dB/Okt.; 2000 Hz)180 W (12 dB/Okt.; 4000 Hz)
Nominal power handling with high pass 80 W (12 dB/Okt.; 2000 Hz)120 W (12 dB/Okt.; 4000 Hz)

Used in / Accessories:

ARIA

Characteristics and sound properties

The ARIA is a small-sized 2-band shelf-top speaker system that uses the TI 100 8 Ohm high-end mid-bass unit and the G 20 SC 8 Ohm dome tweeter. The unit is equally well suited to life as a satellite in a straightforward stereo system or for use in a multichannel set-up. It can be combined with larger speakers such as the VOX 200 where it takes over the centre or effect role or a full set of them can be used to cover all channels. The lower limiting frequency is at 75 Hz, i.e. deep-bass should be left to an active subwoofer and the satellites will need protecting with a high-pass section or, in multichannel systems, they should be run in small mode.

If the speakers are positioned right by the wall or in a shelving unit, the bass reflex tube will be partly damped or completely stifled, which can compensate for excessively boosted bass.

Art. No. 5945

ARIA 2

The ARIA 2 is a small-sized 2-band shelf-top speaker system that uses two TI 100 - 8 Ohm high-end mid-bass units and the G 20 SC - 8 Ohmdome tweeter. The unit is equally well suited to life as a satellite in a straightforward stereo system or for use in a multichannel set-up. It can be combined with larger speakers such as the VOX 200 where it takes over the centre or effect role or a full set of them can be used to cover all channels. The lower limiting frequency is at 75 Hz, i.e. deep-bass should be left to an active subwoofer and the satellites will need protecting with a high-pass section or, in multichannel systems, they should be run in small mode.

If the speakers are positioned right by the wall or in a shelving unit, the bass reflex tube will be partly damped or completely stifled, which can compensate for excessively boosted bass.

Art. No. 5946

ARIA 2 LIGHT

The ARIA 2 LIGHT is a small-sized 2-band shelf-top speaker system that uses two W 100 S - 8 OHM mid-bass units and one G 20 SC - 8 OHMdome tweeter. In smaller rooms and if used as a shelf-mounted unit, the system has a considerable bass foundation which means that a separate subwoofer is not required. However, if coupled with a good powered subwoofer, the range of tonality of far larger hi-fi speakers is achieved.

The larger cabinet and the D'Appolito arrangement in the ARIA 2 LIGHTprovide a far greater maximum sound pressure in comparison with the smaller ARIA LIGHT.

Art. No. 5955

ARIA DIPOL 1

The ARIA DIPOL 1 is intended specifically as an effect speaker for the rear channels in multichannel systems. It unites two concepts: It can be used in both dipole and direct modes. By activating the two outer tweeters, something approaching the dipole effect is achieved, i.e. a diffused sound field. At the same time, the centre tweeter is deactivated. This solution cannot achieve the perfect diffused field of a full dipole set-up, which uses twin cones in the bass department as well, but it does represent a good, value-for-money compromise.
ARIA DIPOL 1 speakers can be combined wither with the other members of the ARIA family or with larger speakers such as the VOX 200.

ARIA LIGHT

The ARIA LIGHT is a small-sized 2-band shelf-top speaker system that uses the W 100 S - 8 OHM mid-bass unit and the G 20 SC - 8 OHM dome tweeter. In smaller rooms and if used as a shelf-mounted unit, the system has a considerable bass foundation which means that a separate subwoofer is not required. However, if coupled with a good powered subwoofer, the range of tonality of far larger hi-fi speakers is achieved.

Art. No. 5954

COUPLET

The COUPLET is a d'Appolito configuration shelf speaker. in the low to mid-range two 13 cm drivers, model AL 130 - 8 Ohm, take over the work. These high-end speakers can really show what they're capable of in a 25 litre bass reflex cabinet. Their long stroke and low mechanical losses guarantee powerful, rich bass reproduction. This is due to a large extent to the BR 25.50 bass reflex tube, mounted on the back of the cabinet, with its flow-optimised shape.

In the high-frequency range above 3000 Hz, the 20 mm textile domed G 20 SC - 8 Ohm demonstrates its very linear frequency response and excellent omnidirectional sound distribution.

The specially designed crossover circuitry optimises the interaction between the mid-bass unit and the tweeter and effectively suppresses unwanted resonance from the aluminium diaphragms before it becomes noticeable. The frequency response in the mid-range is made more linear.

The result is a speaker that maintains its linear characteristics right across the frequency range. Due to the well balanced medium range, the fine details of music reproduction, in particular, comes across particularly clearly. The excellent omnidirectional sound distribution creates a particularly room-filling music reproduction and clear location of each individual instrument or voice. The lowest-range bass comes across equally powerfully. In short, the COUPLET is a speaker that is really good fun.

Art. No. 5912

COUPLET LIGHT

The COUPLET LIGHT is a compact D Appolito configuration shelf speaker. It can be used as a shelf-top speaker or mounted on free-standing supports. In contrast to the original COUPLET, this system uses two W 130 S - 8 OHM as woofers. The tweeter and the cabinet design with its flow-optimised BR 25.50 bass reflex tube have been taken over unchanged.

The result is a speaker that maintains its linear characteristics right across the frequency range. Due to the well balanced medium range, the fine details of music reproduction, in particular, comes across particularly clearly. The excellent omnidirectional sound distribution creates a particularly room-filling music reproduction and clear location of each individual instrument or voice. The lowest-range bass comes across equally powerfully. In short, the COUPLET LIGHT is a speaker that is really good fun.

Art. No. 5928

VIB 130 TL

There are plenty of transmission line fans among the speaker-building fraternity. HOBBY HiFi recently developed a super-slim speaker with a folded transmission line (TML). The VIB 130 TL cabinet suggestion is based on that idea and uses an AL 130 - 8 Ohm and a G 20 SC - 8 Ohm.

This speaker cabinet works on the basis of an organ pipe. At one end is the driver while the other end is open. Certain frequencies generate resonance which causes particularly powerful sound reproduction at the open end. The longer this tunnel, the lower the frequency.

In order to make use of this principle for low frequencies, a length of several metres would be necessary which is only possible by "folding" the transmission line tunnel twice within the cabinet to achieve convenient dimensions, as integrated in the VIB 130 TL. Apart from the intentional low frequency resonance, TML's also generate interference resonance at higher frequencies. It is only by damping the space very carefully that the desired results can be achieved.

Two internal Helmholtz resonators are in use directly behind the woofer as sound absorbers and, in conjunction with the extremely carefully positioned damping material, will ensure that the frequency response is kept beautifully smooth.

VIB 130 TL solves the problem of reproducing low-frequency bass in small rooms where the speakers have to be positioned close to walls. A distance of 10 cm is perfectly adequate.

Real deep bass is not to be confused with disco bass, which one tends to feel through the stomach rather than hear. Deep bass is soft, smooth yet powerful. However, in order to produce such power with small speakers, there has to be a trade-off with the sound pressure. As a result, the efficiency of the VIB 130 TL is relatively low but still well able to cope with normal conditions. This is counterbalanced to a large extent by the extensive frequency response. The cleanliness of the sound picture produced is remarkable with well-placed spatial locations, especially when positioned near a wall. The 20 mm G 20 SC - 8 Ohm tweeter guarantees crystal-clear, lively high-frequency reproduction and provides a smooth upper end to the range.

VOX 200

The VOX 253 is well-known as a speaker system with unusual credentials. Although relatively slim, some people may wish for a less noticeable speaker cabinet. Building a smaller cabinet and maintaining the same characteristics is a tall order. The precondition is that if the dimensions are reduced, the main features should be retained. This means locating the woofer in the side wall, d Appolito arrangement for the two cone drivers with metal diaphragms and dome tweeters in the middle. The excellent AL 200 - 8 Ohm serves as a bass speaker and the tweeter is the G 20 SC - 8 Ohm , already very successfully used in the COUPLETmodel. It was, then, necessary to develop a completely new 10 cm high-end cone driver with a metal diaphragm. Although the development time was relatively long, the wait was worth it - this is a really first-class low- to mid-range unit with a cone made of pure titanium, equally as good as the AL 130 - 8 Ohm. The cabinet dimensions have been proportionally reduced from the large-scale VOX model to produce an almost dainty compact column speaker: the VOX 200.

The take-over frequency levels of 200 Hz and 3000 Hz have been retained. A crucial feature is that the large-sized bass reflex tunnel is also present. In this manner, we have managed to create a compact baby sister for the VOX 253 that is worthy of the family name. As one would expect, the VOX 200 cannot keep up with the 253 when it comes to really tough bass activity, where the 253 would master it with ease. In normal sized rooms this is hardly necessary or required. In any case, the bass capabilities of this smaller sister are far beyond what you would expect from a model of this size.

In the mid- to high-frequency range, smaller speakers are preferable anyway. This is also the case with the VOX 200. The sound breaks away clearly from the baffle and generates a stable volume level and uniform sound throughout the room with no colouration.

Once again, the G 20 SC - 8 Ohm proves its value as a producer of wonderfully clear, lively high-frequency reproduction without the slightest hint of aggression.

If you find large speaker cabinets too much of a good thing, you really ought to have a listen to the VOX 200!

Art. No. 5905

VOX 200 LIGHT

Soon after its launch, the VOX 200 became one of the most popular and successful high-end kits. Several excellent tests in numerous specialist magazines have demonstrated that this system is at a quality level normally expected of far more expensive candidates. We were asked whether it was possible to fit these cabinets with much cheaper loudspeakers and still get good results.

At the lower frequency end, we replaced the AL 200 - 8 OHM with the W 200 S - 8 OHM and also took out the TI 100 - 8 OHM mid-range loudspeaker, replacing it with two W 100 S - 8 OHM. We left the G 20 SC - 8 OHM dome tweeter unchanged. Initial tests showed that only a slight adjustment to the crossover were required. In terms of sound quality, the modified VOX put up an excellent showing in comparisons with the original.

CLASSIC 200 GF

Visaton's CLASSIC 200 GF offers an interesting way to enter the world of high-end music pleasure. The high-quality components have been selected with an eye on optimising value-for-money but without losing sight (or rather, sound) of the key quality requirements.

Supported by the front bass reflex vent, the GF 200 - 2 x 4 Ohmgenerates low-frequency sound in a classic 3-band combination. Thanks to the extremely rigid fibre-glass diaphragm and long cone-displacement properties, level accuracy is perfectly maintained even when coneexcursion is considerable.

In the mid-range, the TI 100 - 8 Ohm, one of the best Visaton drivers available, takes control. This very light, rigid titanium driver has become a reference point in terms of distortion free, well-detailed music reproduction.

Above 2200 Hz, the G 20 SC - 8 Ohm fabric dome driver cuts in and does not stop until well above the frequencies considered to be audible (30 kHz).

The overall result is a very high-quality, perfectly balanced speaker whose moderate size makes it an excellent candidate for enjoying high-end music in the sitting-room.

Art. No. 5962

QUINTETT LIGHT

Just as the light versions of VOX and COUPLET, the QUINTETT LIGHTis aimed at coming as close as possible to the outstanding sound quality of its "big sister", with substantial lower priced driver units.

When listening to both the QUINTETT and the QUINTETT LIGHT, the direct comparison attests: Goal reached.

The QUINTETT LIGHT is, as well as the QUINTETT, a high efficiencyspeaker with a very balanced frequency response. Only in terms of dynamics and maximum sound pressure level, the QUINTETT LIGHTcannot fully keep up with the outstanding performance of the QUINTETT.

Anybody who is into the concept of the QUINTETT, but at a more favourable price, is well advised to take a closer look at the QUINTETT LIGHT.

Art. No. 5893

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