UNO Series 2

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The UNO is a two-way hornspeaker system with integrated active sub-woofer SUB225 CTRL PRO.

 The M1 is a 100 mm midrange driver with a 65mm dome especially developed for this system. The design of the dome ensures a phase-neutral radiation of the sound-waves into the midrange horn and ultra-wide bandwidth of the extended midrange. The large, linear movement of the M1 allows a very low cut-off frequency. To its low end the M1 runs without being slowed-down in full-range operation, ie. is not limited by any passive frequency filters. The CDC system features a controlled roll-off at 2,500 Hz and allows the use of a phase-correct passive frequency crossover.

 H1 is a high-frequency tweeter providing an extremely wide frequency range reaching down to 1 kHz. Based upon the same design principle of the nearly “legendary” TRIO tweeter H3, the H1 offers very low distortion and excellent transient characteristics. The over-dimensioned magnet structure of the tweeter, weighing 3 kg, results in a sound pressure level of 100 dB (Watt / 1m) at very high power rating.

Subwoofer

Two powerful 10T300 drivers drive the subwoofer module SUB225 CTRL PRO.  Developed exclusively for Avantgarde, these 10” drivers are not simple “off-the-shelf” mass produced woofers. In fact, as you will see, these drivers are finally worthy of comparison to our renowned spherical horn speakers.  The 10” driver is rated at 250 Watts (RMS) and 500 Watts (peak). This power rating is combined with a very high sensitivity of 95.0 dB (2.83V/1m). Both 8-ohm drivers are run in parallel. Therefore, the two 10T300s yield an impressive efficiency of over 99 dB per enclosure, matching well with our spherical horns for dynamics and clarity.

The active module PA101 is integrated on the rear panel of the subwoofer enclosure. The PA101 consists of an active frequency crossover, a powerful 200-Watt amplifier, and a velocity control system to continuously monitor and control driver movement (Real-Time driver feedback) which allow the SUB225 CTRL PRO to achieve an astonishingly flat frequency response of 18 - 250 Hz with only 0.8 dB deviation.  The active module PA101 is driven via high power input terminals for direct connection to integrated amps, power amplifiers or receivers. The signal take-off is not only at high impedance, but is also balanced and transformer-coupled. This floats the subwoofer ground, avoiding hum loops and eases connection to balanced and bridged amplifier designs.

An additional musical benefit arises from an enhanced continuity of sound between the subwoofer and mid-range horn, because the tonal and dynamic characteristics of the amplifier or receiver are kept intact. When the listener ceases to be aware of the disparate character of sounds, the suspension of disbelief is facilitated. And musical enjoyment begins.  Additionally, due to the benign (high impedance) load characteristics of the active module (with its powered subwoofers), music lovers can enjoy using small high quality amplifiers, because - perhaps for the first time - such amplifiers are enabled to deliver extraordinary bass extension, definition and dynamics.

The active crossover allows the adjustment of a number of parameters thus ensuring a very easy and fast installation of the system even in acoustically critical situations. The subwoofer level and the crossover frequency can be adjusted by the means of a potentiometer. A polarity invert switch copes with circumstances where a local standing wave exists at the crossover frequency.

The enclosure is constructed in axial symmetry. Designed with a centrally located reinforcing stabilizer, the box construction is very rigid, avoiding resonances. The enclosure is solidly built with 1.2” MDF (30mm). The total weight of the SUB225 CTRL PRO is 100 lbs. (45 kg).  Finished in elegant black, the subwoofer surface is coated in high quality NEXTEL. Special finishes can be ordered on demand.

The vertical steel-tube frames which support the horns are joined to the bass module via semi-flexible rubber-metal couplings. Due to this specific construction the bass unit is acoustically separated from the horn section and the ground floor of the room. Thus any minor box resonances of the bass unit do not interfere with the midrange and the tweeter.  As the entire loudspeaker system is placed on three self-aligning feet, the sub-woofer is freely-suspended above the ground. This free floating design enables an ideal decoup­ling from the floor boundary.

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The standard version of the UNO come with polished white horns and rear covers. Optionally, the system can be ordered in various metallic lacquers finishes. Special designs are available upon request.

UNO System Data

Avantgarde offer a guarantee of:

10 years for material fatigue
5 years on the lacquer finish
1 year on the electronics.

For full technical details, please contact Aeolian at (011) 487 2254