INDIANA Line Tesi 561 Walnut

TESI 561

The 2,5-way Indiana Line Tesi 561 model is a floorstanding front bass reflex speaker, which uses a tweeter with a diameter of 26 mm and 160-mm drivers: mid-woofer and woofer. The massive cabinet rests on a lacquered base. The Tesi series model will work best in medium and larger rooms – from 16 to approx. 25 m2, ensuring high dynamics of the reproduced signal and appropriate dispersion of medium tones.


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Indiana Line is one of the leading Italian brands offering loudspeakers and installation loudspeakers. Its history and traditions date back to 1977. The goal of the engineers and designers working for the Indiana Line brand remains the highest quality of workmanship, combined with the rational use of components. All this is to achieve the sound that goes far beyond the parameters, possible to get in a similar price range.


The Indiana Line Tesi 561 cabinet combines classic shapes with modern rounded edges. Being a true essence of Italian design thought, the Tesi series speaker has been finished with durable and aesthetic vinyl. It is available in three colors – white, black oak or light walnut. The Tesi 561 model is perfect for interiors with almost any arrangement. This loudspeaker not only looks great, but also surprises the listener with its full, yet mature sound.


The Tesi 561 model is a 2,5-way floor-standing design. In addition to the 26 mm silk dome tweeter, a 160 mm mid-woofer and a 160 mm woofer with a large linear excursion of the membrane have been used here, which translates into high dynamics of the bass driver signal reproduction. The massive cabinet of the Tesi 561 loudspeaker hides two internal reinforcements and rests on an elegant, lacquered base. The bass reflex port is placed at the front baffle, which facilitates the setup of Tesi 561 even close to the wall. Tesi 561 is a construction designed for use in medium-sized listening rooms – from 16 to 25 m2. This loudspeaker has an amplifier loading impedance between 4 – 8 ohms, and the amplifier power – necessary to power this speaker unit – should be in the range of 30 to 150 W.


The well-shaped cone of the mid-woofer used in the Tesi 561 is made of a mixture of polypropylene and a mineral called mica, which gives the membrane the rigidity necessary for extremely precise reproduction of micro-details. The stationary phase plug located in the center of the woofer provides a wide dispersion of the acoustic band mid-frequencies, filling the listening room with them. The bass driver located below is distinguished by a cellulose-pulp membrane, famous for its warm and powerful reproduction of the lower frequencies. A silk dome tweeter with a strong neodymium magnet and a radial rear chamber has been placed in a specially profiled front, as close as possible to the mid-woofer. It offers open and clear treble with a sparkle of finesse in the highest octave, while perfectly blending with the mid-woofer. Importantly, the design of the tweeter filter is based only on on-air coils and foil capacitors, which makes Tesi 561 sound very impressive compared to competitive models. Noteworthy is the low and smooth tuning of the bass reflex system, which allows for deep and dynamic bass.



  • 2.5-way acoustical design
  • Crossover frequencies: 180 Hz and 2,8 kHz
  • 160 mm woofer
  • 160 mm mid-woofer
  • 26 mm silk dome tweeter
  • Bass reflex cabinet with a front-firing port
  • Frequency response: 35 Hz to 22 kHz
  • Bi-amping / bi-wiring capability
  • Finish: white, black oak or light walnut
  • Suggested amplifier power: 30 – 150 W
  • Sensitivity: 92 dB (2,8 V / 1 m)
  • Dimensions (H x W x D): 890 x 180 x 300 mm
  • Weight: 13,7 kg


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