CT Dipol 130

Art. No. 8442

Characteristics - 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 Neodymium 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 DIPOL 130 is part of the combinations:
System CT 130 A
System CT 130 B
System CT 170 A
System CT 170 B
System CT 170 C
System CT 170 D
System CT 170 E
System CT 170 F
System CT 200 A
System CT 200 B
System CT 200 C
System CT 200 D
System CT 200 E
System CT 200 F

Construction

The cabinet consists of a main section with a trapezoidal base made from 16 mm boards and two double baffles also from 16 mm material. The body contains two enclosed cabinets, separated from each other by a partition. It is necessary to make a left-hand and a right-hand dipole chamber. The difference between them is which chamber houses the terminals. The connection must always be in the front chamber due to the crossover distribution, in other words in the chamber that points towards the main loudspeaker. Whether you then mount the terminals in the top cover or on the floor does not matter and can be adapted to suit the cable run. To build the cabinets, first cut the chamfers on the side pieces, the front and the rear panels and shape the top and bottom to produce the required trapezoidal form. Then cut out the holes in the side pieces and top / bottom and in the double baffles and chamfer the double baffles. Once the body has been glued together, the double baffles are fitted in place and, if possible, the cut-outs for the mid-bass drivers. Finally, fit the speakers into the cabinet, ensuring that the connections to the crossovers are correct.

Inner damping

Half a mat of damping material is loosely pushed into each chamber of the dipole cabinet.

Crossover

Enclosure

Baffle

Mounting SC 4 ND