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SC 4 ND 4 OHM

Magnetically shielded HiFi titanium dome tweeter for the high-frequency range above 2000 Hz. Due to the highly damped sypronyle surround the frequency response is free from partial oscillations. The ferrofluid-filled air-gap provides a high power handling. Magnetic shielding and compact dimensions thanks to the use of a neodynium magnet system. The latter allows real D`Appolito baffle designs.
Technical Data
Sketch
Amplitude & Impendance Frequency
Nominal impedance Z 4 Ohm
Frequency response 1000 - 22000 Hz
Mean sound pressure level 90 dB (1W/1m)
Resonance frequency fs 1350 Hz
Voice coil diameter 2.5 cm
Cutout diameter 5 cm
Net weight 0.106 kg
D.C. resistance Rdc 3.4 Ohm
Mechanical Q factor Qms 1.87
Electrical Q factor Qes 1.56
Total Q factor Qts 0.85
Effective piston area Sd 5 cm2
Inductance of the voice coil L 0.71 mH
Peak power handling with high pass 120 Watt(12 dB/Okt.; 2000 Hz)
Nominal power handling with high pass 80 Watt(12 dB/Okt.; 2000 Hz)

Used in / Accessories:

CT CENTER 130

The CT CENTER 130 has been specially developed with a particular driver arrangement in mind to provide perfect omnidirectional sounddispersion and to ensure the sound source is close to the image. Spoken dialogues can thus be directly located and correctly positioned even 30° from the centre line without distortion. The W 130 SC 4 Ohm loudspeaker model and the 25 mm SC 4 ND 4 Ohm titanium tweeter with its neodym magnet are magnetically shielded. The sealed 2-way speaker, with only 8 litres net cabinet volume, has a Q-rating of 0.7 and a linear frequency response of 100 Hz to 20,000 Hz. If used, as recommended, at 100 Hz at above, it can easily manage maximum levels of 105 dB. During the development of the system, care was taken to ensure that the high rated impedance allows its use with virtually any amplifier. 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 frequencyranges. As an option, it is possible to combine the CT CENTER 130 with an additional SUB T-25 active subwoofer with a cut-off frequency of 100 Hz which produces a high-grade centre system, which covers the entire frequency range, has excellent power handling capabilities and still remains very compact, enabling it to be easily positioned. The CT CENTER 130 can be used in all CineTOP systems, such as the CineTOP 170 or 200 for normal sitting-room use. If placed upright, the CT CENTER 130 can also be used as a main loudspeaker for compact home video applications, where it would require the support of a subwoofer, e.g. SUB-T 25. The CT CENTER 130 is characterised by its excellent omnidirectional sound distribution and balanced sound qualities, that reproduce film soundtracks in all their colour and depth.

CT CENTER 170

CT CENTER 170 is based on the CT MAIN 170 main loudspeakers and acts as a Centre Speaker, where the only difference is that it is designed to lie on its side. Since the speaker arrangement and crossover unit are identical in every respect, this centre system is ideal for use with THX® systems. With its linear frequency response of 80 Hz 20,000 Hz in an enclosed cabinet with a total Q-rating of 0.7, the required vertical beaming and a maximum sound pressure of 108 dB, this system leaves nothing to be desired. The loudspeakers used, W 100 SC 4 Ohm and W 170 SC 4 Ohm, are magnetically shielded and the shielding of the complete speaker unit corresponds to THX® regulations (3-Gaussian curve). This means that the entire speaker can also serve as a stand for a TV set. The speaker is a titanium dome tweeter with a neodym magnet. The CT CENTER 170 can also be used as a main loudspeaker and, because of its overall dimensions, can be placed on top of a SUB T-36 subwooferwhich is lying on its side.This speaker has extremely clear bass reproduction with a well-balanced overall sound quality, providing a realistic impression of live sound. Even high volume settings come across naturally and undistorted. The designers placed emphasis on hig impedance, so that the speakers can be connected up to virtually any amplifier with no problems. We recommend using this system in conjunction with CT MAIN 170 main loudspeakers, the CT DIPOL 130effect speaker and the SUB T-36 subwoofer. The realistic soundreproduction especially for films is so close to the original that the listener feels as if they are right in the thick of it. This system is a joy to listen to.

CT CENTER 200

CT CENTER 200 is based on the CT MAIN 200 main loudspeakers and acts as a Centre Speaker, where the only difference is that it is designed to lie on its side. Since the speaker arrangement and crossover unit are identical in every respect, this centre system is ideal for use with THX® systems. With its linear frequency response of 80 Hz 20,000 Hz in an enclosed cabinet with a total Q-rating of 0.7, the required vertical beaming and a maximum sound pressure of 108 dB, this system leaves nothing to be desired. The loudspeakers used, W 130 SC 4 Ohm and W 200 SC 4 Ohm, are magnetically shielded and the shielding of the complete speaker unit corresponds to THX® regulations (3-Gaussian curve). This means that the entire speaker can also serve as a stand for a TV set. The speaker is a titanium dome tweeter with a neodym magnet. The CT CENTER 200 can also be used as a main loudspeaker and, because of its overall dimensions, can be placed on top of a SUB T-40 subwoofer. This speaker has extremely clear bass reproduction with a well-balanced overall sound quality, and impressive spatial separation. High volume settings, particularly important to reproduce live sound, come across powerfully, naturally and undistorted involving the listener directly in the action. The designers placed emphasis on high impedance, so that the speakers can be connected up to virtually any amplifier with no problems. We recommend using this system in conjunction with CT MAIN 200 main loudspeakers, the CT DIPOL 130 effect speaker and the SUB T-40subwoofer. The virtually perfect reproduction of the sound channels is so close to the original that the listener feels as if they are personally involved in the action. Makes films into an experience.

CT DIPOL 130


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.

CT MAIN 170

The CT MAIN 170 speaker was originally developed as a main loudspeaker for home video applications but is equally well suited to listening to hi-fi music. This enclosed 3-way cabinet features a front bafflearrangement based on the D Appolito principle arranged symmetrically around the 25 mm titanium SC 4 ND 4 Ohm tweeter with neodym magnets. The loudspeakers used, W 100 SC 4 Ohm and W 170 SC 4 Ohm, are magnetically shielded. In order to suppress any unwanted interference by the baffle on the radiation pattern, the entire mid- to high-range unit is not positioned in the middle of the cabinet, but towards the inner side. The linear frequency response of the speaker is 80 Hz 20,000 Hz, which produces a total Q-rating of 0.7 in combination with the vertical beaming effect, and a total SPL of over 108 dB, corresponding to the THX® requirements. The CT MAIN 170 can equally well be used in small or large rooms. Mounted on a stand, the cabinet becomes an column speaker. The CT MAIN 170 produces precise bass reproduction and an exceptionally well balanced sound experience that is able to compete with live music. Even high volume settings will come over naturally and will not lead to distortion. The designers placed emphasis on high impedance, so that the speakers can be connected up to virtually any amplifier with no problems. We recommend using this system in conjunction with CT CENTER 130 or CT CENTER 170 centre speakers, the CT DIPOL 130effect speaker and the SUB T-36 subwoofer. The virtually perfect reproduction of the sound channels is so close to the original that the listener feels as if they are personally involved in the action. Makes films into an experience.

CT MAIN 200

The CT MAIN 200 speaker was originally developed as a main loudspeaker for home video applications but is equally well suited to listening to hi-fi music. This enclosed 3-way cabinet features a front bafflearrangement based on the D'Appolito principle arranged symmetrically around the 25 mm titanium SC 4 ND 4 Ohm tweeter with neodym magnets. The loudspeakers used, W 130 SC 4 Ohm and W 200 SC 4 Ohm, are magnetically shielded. In order to suppress any unwanted interference by the baffle on the radiation pattern, the entire mid- to high-range unit is not positioned in the middle of the cabinet, but towards the inner side. The linear frequency response of the speaker is 80 Hz -20,000 Hz, which produces a total Q-rating of 0.7 in combination with the vertical beaming effect, and a total SPL of over 110 dB, corresponding to the THX® requirements. The CT MAIN 200 can equally well be used in small or large function rooms. Mounted on a stand, the cabinet becomes an column speaker. The CT MAIN 200 provides precise bass reproduction and exceptionally good sound quality and spatial separation. Peak volume levels, so important for a realistic live sound experience, come over naturally and without the slightest distortion. The designers placed emphasis on high impedance, so that the speakers can be connected up to virtually any amplifier with no problems. We recommend using this system in conjunction with CT CENTER 130 or CT CENTER 200 centre speakers, the CT DIPOL 130 effect speaker and the SUB T-40subwoofer. The virtually perfect reproduction of the sound channels is so close to the original that the listener feels as if they are personally involved in the action. Makes films into an experience.

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