Diva 7

Model Diva 7 is a 2-way center channel speaker that complements the Diva line perfectly and, when combined with other speakers belonging to it, allows for the creation of a great-sounding home theatre system. Unlike the other models from the new generation of the Diva series, the Diva 7 features a simple, lacquered front panel. The components and technical solutions used in the Diva 7 speaker column, known from other models of the new series, ensure that it is not afraid of any challenges, providing spatial, yet clear and dynamic sound in the audio system.

Indiana Line Diva 7

The Diva 7 loudspeaker uses two identical 150 mm low-midrange electroacoustic transducers with Curv membranes. Between them is a 26 mm high-frequency transducer with a soft, silk dome and a radial damping chamber. Despite its two-way, relatively small construction, the Diva 7 surprises with its sound capabilities, especially in terms of low-frequency dynamics. The MTM (midrange-tweeter-midrange) arrangement allows for sound with high energy, all while maintaining proper articulation.

Stylish enclosure

The Diva 7 column has a two-part enclosure made of MDF board. The front part consists of a lacquered panel, which is 18 mm thick and helps prevent unwanted resonances, significantly improving sound clarity. The attractive design of the Diva 7 model is emphasized by the magnetically mounted, acoustically transparent grille.

Low-midrange transducers with Curv membrane

In the Diva 7 column, both low-midrange transducers feature membranes made of Curv material (polypropylene composite). Its use ensures neutral and precise processing of low tones. Compared to older generation Diva columns, the Diva 7 model also features improved speaker baskets. They have smoother ribbing, reducing air resistance behind the membrane and minimising unwanted resonances. The baskets have been specifically designed to work well with the Dual-Wave suspension. This ensures that the entire component not only functions properly but also looks attractive.

Proprietary upper suspension design

The low-midrange transducers use the Dual-Wave upper suspension. This precisely designed rubber surround prevents resonance of the suspension-membrane system during midrange playback and expands the linear operating range of the speaker. It also reduces distortions, especially in the low bass registers, and improves articulation of the midrange. This has a particularly positive impact on the sound of percussion, string, and acoustic instruments. The visually pleasing external appearance of the Dual-Wave transducers is reminiscent of professional stage constructions with so-called accordion suspensions.

High-frequency transducer

The Indiana Line Diva 7 features a centrally located tweeter with a diameter of 26 mm, equipped with a radial damping chamber and a powerful, dual-ferrite magnet. The high-frequency transducer has a rectangular, precisely profiled faceplate, characteristic of other models in the Diva series. It is cast from aluminium and has a rubber waveguide – surface, contributing to widening the soundstage and better filling the room with high frequencies. It visually complements the symmetrically placed low-midrange transducers on either side.

Optimized crossover

The Diva 7 has a newly designed and optimized crossover that allows this model to work with practically any amplifier. The circuit topology, the number of components used, and their parameters have been precisely selected based on hours of listening tests. As a result, the frequency response is balanced. Refined filtering along with appropriately chosen characteristics of individual electroacoustic transducers ensure balanced frequency response and low distortion levels. This results in deep and incredibly natural sound.

Bass-reflex enclosure with rear port

The Diva 7 features a bass reflex enclosure with a port located at the rear of the column. This setup handles a wide frequency range with unrestricted dynamics and proper extension in the low-frequency range. Combined with Curv membranes and Dual-Wave suspension, this solution guarantees a clear midrange and delivers open and clear high tones from the tweeter.

The most important features of the Diva 7 model:

2-way central channel speaker
Bass reflex enclosure with rear port

Front panel made of 18 mm thick MDF
Magnetically attached black grilles

Deeply optimized crossover design
Crossover split frequency: 3.5 kHz

Two 150 mm low-midrange transducers with Curv membrane
Dual-Wave – proprietary design of the upper suspension of midwoofer membranes

26 mm tweeter with a silk dome and radial damping chamber
Frequency range: from 45 Hz to 23 kHz

Finishes: matte black or wood veneer with a white front
Recommended amplifier power: 30 – 140 W

Sensitivity: 92 dB (2.8 V/1 m)
Dimensions (H x W x D): 166 x 470 x 260 mm

Weight: 8.3 kg

Technical data

Speaker alignment / type: 2-way / center
Box aligment / port placement: bass-reflex / back
Driver diameter: midwoofer: 2 x 150 mm, Curv polipropylene; tweeter: 26 mm, silk dome
Frequency response: 45 – 23000 Hz
Sensitivity (2,8 V/1 m): 92 dB
Crossover: 3500 Hz
Bi-wiring / bi-amping: no
Amplifier loading impedance: 4 – 8 ohm
Suggested amplifier power: 30 – 140 W
Dimensions (H x W x D): 166 x 470 x 260
Color: black, white oak
Weight: 8,3 kg

100% polyester damping

All Indiana Line cabinets are filled with polyester – a synthetic non-woven fabric of high purity, known for its excellent damping of the internal resonances of the speaker cabinets. What's more, polyester is also extremely resistant to stretching, drying and moisture.

Air coils and film capacitors

In order to emphasize the exceptionally clear and natural sound of our loudspeakers, we decided to get rid of the troublesome components from the crossover where it was necessary – in the tweeter filter. In all loudspeaker models in which this filter is used, we use only air coils and foil capacitors. These elements do not introduce harmful distortions to the filtered signal, as is the case with ferrite core coils and electrolytic capacitors.

Aluring

The short-circuit ring is made of pure, perfectly electrically conductive aluminum (1010). It has been placed inside the magnetic system of the mid-woofer. By linearizing the impedance of the loudspeaker, it positively influences the sound of the low and medium frequencies of the acoustic band, significantly reducing non-linear distortions. The ring also absorbs the heat emitted from the speaker coil, increasing its thermal load capacity.

Computer-optimized crossover design

The use of numerical calculations allowed for obtaining a balanced frequency response and low level of distortion, as well as reducing power losses. The obtained sound results were verified by many hours of listening tests. The tweeter filter circuit uses only air coils and foil capacitors. This allowed to avoid distortions that often appear in the case of electrolytic capacitors or coils with a ferrite core. Core coils, when present in a crossover, have a laminated high-silicon iron core, which minimizes distortion from the iron cores.

Curv cone

Curv is a combination of special fibers with high stiffness and high internal damping. It is a material that is thermally formed into a cone profile, which ensures very good directional characteristics of the sound. The Curv cone combines the advantages of membranes made of natural materials (warm and pleasant sound) with the advantages of stiff membranes (high dynamics, precision and a wide, even frequency response). The membranes made of Curv material are also moisture-resistant and are characterized by high durability. The Curv cone has been used in the mid-woofers.

Dual-Wave suspension

The Dual-Wave upper spring is an original, precisely designed membrane suspension that expands the range of linear operation of the loudspeaker. It reduces distortion, especially in the low bass registers, and improves the articulation of the midrange of the acoustic band. This translates into improved sound of instruments, especially percussion, string and acoustic ones. Thanks to the Dual-Wave solution, unevenness of the frequency response, which results from the resonance of the membrane edge, is also reduced, without the need to varnish it. Dual-Wave suspension drivers also have an eye-pleasing appearance that refers to professional designs used, among others, on stages and equipped with the so-called accordion springs.

MDF housing with transverse reinforcements

Indiana Line loudspeakers cabinets are made of MDF panels. They are made using the latest production techniques, which ensures high precision of workmanship, great repeatability and excellent performance parameters for many years. MDF is a moisture-resistant material, it is massive and it suppresses all resonances very well. To completely remove unwanted vibrations, we used transverse reinforcements of the cabinet. They take the form of horizontal rings that are located at key points along the entire height of the loudspeaker cabinet.

Radialvent

A radial damping chamber that prevents harmful reflections under the tweeter dome while allowing it to achieve a low resonance frequency. The small, but at the same time strong magnet of the tweeter is surrounded by a space in which – due to its shape – standing waves cannot be generated, which is the case with classic radial chambers located in the axis of the dome.

Rubber tweeter faceplate

Original design of the tweeter's frontplate. It is cast from aluminum and has a rubber surface (instead of the commonly used plastic). Ensures proper treble dispersion. It helps to widen the sound stage and better fill the room with high frequencies.

Tilted front

The front panel of the column is placed in the box in a unique way – it is slightly tilted back because it is embedded in the box – shallower at the bottom and deeper at the top. This solution is not used by other manufacturers in models offered in a similar price segment. The front panel also has a constant thickness, which varies depending on the Indiana Line loudspeaker model, up to 30 mm, which increases the mechanical stability of the loudspeaker and prevents unwanted vibrations, and also contributes to obtaining a transparent sound.

Indiana Line Catalogue EN

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Indiana Line Diva 7 – product card_EN

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New Diva - owners manual

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