Indiana Line Tesi 661
Established in 1977, Indiana Line is now one of the most important Italian brands offering loudspeakers and installation loudspeakers. The designers and engineers developing new models with the Indiana Line logo strive to achieve high-quality workmanship, with the rational use of particular components. The goal of this approach is to achieve sonic qualities that go far beyond the parameters that can be achieved in this price range.
Timeless color versions
The classic, yet stylishly rounded cabinet of the Indiana Line Tesi 661 perfectly reflects the principles of Italian design thought. The speaker has been finished with durable and at the same time extremely aesthetic vinyl in the color of light walnut, black oak or white. Regardless of which color version you choose, the Tesi 661 model will look great in any interior. This speaker not only looks good but is also distinguished by full and mature sound.
The impressive scale of sound
The Tesi 661 by Indiana Line is a majestic 3-way floor-standing loudspeaker. Its construction uses as many as four electro-acoustic drivers: a 26 mm dome tweeter, a 160 mm mid-woofer, and a pair of woofers with a diameter of 160 mm and a large linear excursion. The massive cabinet with two internal reinforcements rests on four solid cast aluminum feet with anti-vibration rubber pads. Bass reflex port is in the base. Tesi 661 will be perfect for larger interiors (of 16 to 25 m2), where it will ensure an impressive scale of sound, preferably standing about 1 meter from the wall. The speaker has an amplifier loading impedance between 4 – 8 ohms, and the power of the amplifier used to power it should be in the range of 30 to 150 W.
Perfectly matched design
The mid-woofer driver used in the Tesi 661 model has been appropriately profiled and made of a mixture of polypropylene and mica, which gives the membrane the rigidity necessary for extremely precise reproduction of even the smallest sonic details. In the center of the woofer membrane, there is a phase plug, which ensures a wide dispersion of mid-frequencies, filling the listening room with them. The bass electro-acoustic drivers below have cellulose-pulp membranes that are known for warm and powerful reproduction of the lower frequencies. Above the mentioned drivers there is a silk dome tweeter with a neodymium magnet and a radial rear chamber. It is mounted in an undercut and specially profiled front, as close as possible to the mid-woofer. The tweeter produces open and clear treble, while perfectly blending with the mid-woofer used in the Tesi 661 model. What’s more, the tweeter filter uses only air coils and foil capacitors. Deep and dynamic bass is not only the result of the drivers used but also the low and smooth tuning of the bass reflex system.
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The most important features of the Tesi 661 model:
- 3-way acoustical design
- Crossover frequencies: 400 Hz and 3 kHz
- 2 x 160 mm woofer
- 160 mm mid-woofer
- 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
- Finish: white, black oak or light walnut
- Suggested amplifier power: 30 – 160 W
- Sensitivity: 92 dB (2,8 V / 1 m)
- Dimensions (H x W x D): 925 x 180 x 300 mm
- Weight: 14,1 kg
