Indiana Line Diva 660
Indiana Line is an Italian brand with rich traditions, which offers loudspeakers and installation speakers. Its history dates back to the 1970s. The company’s designers and engineers constantly make sure that the models they introduce to the market are of high quality, and at the same time ensure unrivaled sound qualities in their price range.
Top series of Italian brand speakers
Diva is the flagship series in the Indiana Line offer and at the same time a real pride of the main designer. It is distinguished by elegant, timeless shapes and a black piano lacquer finish. Figuratively speaking, the Indiana Line Diva loudspeakers combine a distinguished seriousness with a hot, southern European temperament hidden inside.
A powerful floorstanding model
The Indiana Line Diva 660 is a 3-way floorstand using a bass reflex cabinet, a 26 mm tweeter, a pair of 180 mm mid-woofers with a large linear excursion, and a 140 mm midrange driver, operating in a separate sealed cabinet. The great sonic potential of this construction makes it possible to build a high-quality stereo system. The speaker is designed for rooms of more than 15 m2. The power of the amplifier required to drive it should be from 30 to 170 W, although in the case of this model you should not be afraid of using even more powerful devices. The amplifier loading impedance of the Diva 660 is 4 – 8 ohms.
Properly matched drivers
The aforementioned tweeter is a construction with a silk dome and a radial rear chamber with two types of damping materials. The driver is propelled by a strong neodymium magnet and embedded in the cabinet with a soft, rubber spring, isolating the driver from unwanted vibrations of the speaker cabinet. The midrange driver used in this Diva series model has a unique Curv cone made of woven polypropylene, which is formed into the profile necessary for excellent directivity and optimal damping. Noteworthy are the cast aluminum speaker baskets, which avoid discoloration in the midrange. Importantly, the magnetic drives of the mid-woofers have aluminum impedance linearization rings, which allowed to reduce the level of harmonic distortion and improved the thermal conditions for the operation of the coils. These solutions translated into a dynamic and clear sound, also provided at high volume levels. Inside the Diva 660, several specially shaped internal reinforcement plates have been placed to increase both cabinet stiffness and reduce standing waves. The cabinet of the loudspeaker is divided into two separate sections: the upper one is closed (to control the midrange driver’s membrane excursion), while the other is equipped with a double vent for the highest possible efficiency at low frequencies. To ensure effective isolation of the entire structure from the floor, the die-cast aluminum feet have been equipped with anti-vibration rubber pads.
Proper bandwidth distribution
A carefully tuned crossover with air coils ensures the correct distribution of the processed frequency band (from 35 Hz to 22 kHz). The tweeter filter section is based on foil capacitors. It is worth emphasizing that the loudspeaker terminals used in the Diva series models, and therefore also in this floor-standing model, have been made with the use of magnetically inert materials and allow the speaker to be connected in bi-wiring or bi-amping.
Sublime sound
The sound provided by the Indiana Line Diva 660 is characterized by a quick and extremely precise impulse response. A “floating” tweeter located between the woofer and the midrange driver ensures natural and detailed high-frequency sound. Two 180 mm woofers produce warm and rich bass of remarkable dynamics. On the other hand, thanks to the midrange driver, the Diva 660 can boast about fully natural reproduction of e.g. vocals without overloading them with low frequencies. What’s more, the soundstage is wide and thrillingly engaging, and the high-quality electro-acoustic transducers are not afraid of even more powerful transistor amplifiers.
The most important features of the Basso 880 model:
- 3-way acoustical floor standing design
- Crossover frequencies: 300 Hz and 2,8 kHz
- 140 mm midrange driver with Curv cone
- 2 x 180 mm bass driver with natural cellulose pulp cone
- 26 mm silk dome tweeter
- Bass reflex cabinet with a port in the base
- Frequency response: 35 Hz to 22 kHz
- Bi-amping / bi-wiring capability
- Black piano lacquer finish
- Suggested amplifier power: 30 – 170 W
- Sensitivity: 92 dB (2,8 V / 1 m)
- Dimensions (H x W x D): 950 x 230 x 300 mm
- Weight: 17,2 kg
