Characteristics and sound properties

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.

Characteristics and sound properties

Our CT DIPOL 130 is a dipole loudspeaker conforming to the THX® regulations for positioning close to walls. As a result of the special characteristics of this dipole, a completely free-standing diffuse sound field is generated. The system uses two mid-bass W 130 S 4 Ohm and two 25 mm titanium SC 4 ND 4 Ohm dome tweeters with neodym magnets. In the medium and high-range, the opposing loudspeakers operate from separate enclosed chambers that are phase shifted by 180°. Up to a frequency of 200 Hz, the mid-bass drivers work in sync. This is possible because of the special crossover circuitry, to ensure that, in the bass range, and despite the dipole principle, sufficient sound is produced. According to the THX® regulations, such a dipole system must cover a frequency range of 125 Hz - 10,000 Hz. The CT DIPOL 130 achieves this with no effort, as it does the maximum sound pressure requirements of 102 dB. The designers placed emphasis on high impedance, so that the speakers can be connected up to virtually any amplifier with no problems. The CT DIPOL 130 can, however, easily be integrated into normal Dolby®-Surround systems. If the speaker is not supplied with an amplifier signal which is trimmed under 100 Hz, it is advisable to add the recommended passive high-pass filter, in order to prevent overloading at higher output levels in the lower bass frequency ranges. As an option, two dipoles (left and right) can be combined with an active subwoofer SUB T-25 with a cut-off frequency of 100 Hz to produce the ideal surround channel system, which will cover the entire frequency range. The system experiences no trouble in achieving the high power-handling capabilities for fullrange use. The ideal position for the CT DIPOL 130 to provide ideal listening pleasure is to the side of the sitting position, either hanging on the wall about 1 m -1.5 m off the floor or on corresponding stands. The speakers can be used in all CineTOP systems, such as CineTOP 130, CineTOP 170 and CineTOP 200 for smaller and large rooms. The CT DIPOL 130 system is also an optimum choice for improving an existing home video system. This Dipole is characterised by its excellent diffuse sound field that will surround the listener with a carpet of sound. The tangible yet not locatable spatial effects will turn your sitting room into a cinematic experience.

Characteristics and sound properties

If you do not have much space for your surround speakers to the rear and sides of your cosy chairs, this smaller surround system, CT EFFECT 80, is the ideal solution. The cabinets are so small, they can be hidden anywhere. The FRS 8 8 Ohm fullrange speaker, with its extremely linear frequency response, is well-suited thanks to its frequency response of 100 Hz - 7.000 Hz.
Comprehensive practical tests have demonstrated that, as far as surround speakers are concerned, omnidirectional sound distribution is particularly effective. This system produces a spatial listening effect which is independent of the actual seat position. In order to achieve this ideal sound distribution, the FRS 8 8 Ohm is mounted in such a way that it points upwards. The bundling effect does not begin until very high frequencies are reached, as a result of the small size. The required 7,000 Hz are therefore easily distributed horizontally. The optimal position for these small speakers is at head height beside the wall or in a corner of the room, behind the seats and to the sides. The relatively low power handling capabilities of these small speakers is of secondary importance because with this fullrange surround system the high-output, low frequencies are not included in the effects channel of the Dolby®-Surround Prologic system. Furthermore, a sound system is considered to be ideally set up if the sounds are felt to be coming from in front of the listener. These effect speakers generate a quieter, more diffused impression of the sound, which is not intended to be easily located. In terms of their sound output, these easy-to-make speakers will satisfy your spatial expectations. All the sounds encoded in films using the Dolby®-Surround Prologic system to include spatial effects are reproduced naturally and at more than sufficient volume levels for normal sitting rooms.
In conjunction with the CT SUB 80 system and the CT CENTER 80, two CT EFFECT 80 's provide an excellent surround sound "starter" system, that will transport viewers right into the centre of the action with centrally located dialogues, background noises and dramatic sound effects.

A complete kit for this suggestion is available via www.vc-mailorderservice.de.

Characteristics and sound properties

The EFFECT 130 is a Dolby® Surround effect speaker and can easily be used in conjunction with a CENTER 130 system. Thanks to the magnetically shielded SC 13 8 ohm driver, the system will be able to achieve the sound volumes required for clear reproduction of Dolby® Surround effects even in larger rooms. When Dolby® Surround signals are encoded, the upper frequency range is topped off at 7000 Hz, which is why the SC 13 8 ohm speaker, which remains linear up to around 10 kHz, is ideally suited to this application. In order to achieve spatial surround effects irrespective of the seating position, the SC 13 8 ohm has been designed to radiate the sound upwards.

The EFFECT 130 speakers can be located either freely around the room or mounted on the wall, where this should be behind or to the side of the seating position.

Characteristics and sound properties

The 2-way FONTANA system is a 360° omnidirectional speaker with a highly attractive appearance and is particularly well suited as an effect speaker. The speakers are arranged so that they point upwards and reflect the sound output by means of two specially shaped cones. This results in a uniformly distributed frequency response, that matches your hearing expectations in the room.

The best sound quality is achieved if these omnidirectional speakers are positioned about 50 cm to 1 m from a wall. This produces spatial sound of such tangible quality that it is perceived at any position in the room. Virtual sound sources, such as instruments or voices perceived to be between the speakers, can be clearly located from any seating position in the room, which gives listeners a freedom of movement in the room they have never had before and this holds true even in acoustically difficult rooms. This results in extraordinary diffusion fields for the effects channels in Dolby® Surround and multi-channel systems.

The DT 94 8 Ohm tweeters, ideal for this type of system, working in conjunction with the mid-bass AL 170 8 Ohm and the carefully tuned crossover unit, ensure balanced, neutral sound reproduction. Low-range bass frequencies are boosted by the BR 15.34 tube, which is situated in the bottom of the bass chamber and guarantees clear, powerful bass reproduction.

The omnidirectional FONTANA, tested in an anechoic chamber, achieved a maximum volume of 98 dB. If positioned, as recommended, near a wall, however, the system produces + 6 dB or, in a corner of the room, + 9 dB, making this omnidirectional speaker ideally suited even for larger rooms. If required, two FONTANA's can be installed on each side to produce a full surround field. To do so, position one omnidirectional speaker to the side of the seating arrangement and a second one behind that. The same applies to the other side.

The FONTANA is ideal as a fullrange effects speaker system for high-quality surround sound systems for movies and music, but can just as well be used as the main loudspeaker for hi-fi stereo systems to give you excellent spatial listening pleasure for your favourite music.