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Duo Mezzo Floorstanding Loudspeakers By Avantgarde Acoustic
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Product Summary:
The Duo MEZZO G3 represents Avantgarde's flagship semi-active 2-way horn system, catering to discerning customers seeking unparalleled bass performance within space constraints that preclude the TRIO with SpaceHorns.... Click To Read More
Trial Period NA
Countries Shipped USA
Burn-In Time 200 Hours
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Duo Mezzo Floorstanding Loudspeakers By Avantgarde Acoustic


The Duo MEZZO G3 represents Avantgarde’s flagship semi-active 2-way horn system, catering to discerning customers seeking unparalleled bass performance within space constraints that preclude the TRIO with SpaceHorns.


Product Description

Experience the ultimate in audio performance with the MEZZO G3, a top-tier semi-active 2-way horn system. Perfectly designed for those who desire outstanding bass quality in areas where larger systems might not be suitable. Enhance your listening pleasure with unmatched sound excellence.

Inspired by the best from the past.

Inspired by iconic Avantgarde models of the past, the MEZZO G3 combines powerful woofers with mid and high-frequency horns, embodying a timeless audio concept. This design revives classic audio ideals, enhanced with modern expertise and state-of-the-art technology. Discover an unparalleled full-range horn loudspeaker with the MEZZO G3. This exceptional system strives to match the excellence of the renowned TRIO G3 with SpaceHorns in a smaller package. Experience uncompromising audio quality like never before.

The MEZZO G3 showcases a powerful midrange/treble unit, combining the robust 670mm low-frequency spherical wave horn from the DUO series with the 200mm XT3 super-tweeter from the TRIO series. Redesigned crossovers featuring the advanced NatureCapPlus capacitor and improved circuitry provide precise phase correction. Easily adjust the tweeter position using the rotary knob to achieve the perfect listening experience. Transform your bass experience with the MEZZO G3, featuring a revolutionary design inspired by classic cinema systems. This innovative system projects sound through a large front horn and two substantial 120mm downward-firing bass reflex tubes. With two lightweight 12-inch drivers, including the exceptional XB12 with its 6-inch motor structure, the MEZZO G3 offers unmatched power-to-weight performance. The result is bass power and performance that stands unrivaled by any other speaker system, regardless of price. Experience the pinnacle of audio excellence with the MEZZO G3.


One speaker. Two versions.


Immerse yourself in the semi-active version, designed to seamlessly integrate with your external hi-fi amplifiers. With an impressive efficiency of 107dB/W/m and an impedance of 18 ohms, this speaker operates effortlessly and is ideal for low-power amplifiers. Enhance your audio journey with the perfect companion for the world’s finest high-end amplifiers.


The iTRON version seamlessly integrates amplifiers into the speaker, removing the need for external power amplifiers. Go directly into these amplifiers with an XLR interconnect cable from your phono or digital source.


Driver Technology

For over five years, Avantgarde’s commitment has been to refine, experiment, and enhance the new G3 Evolution driver series. With meticulous measurement and attentive listening, Avantgarde has achieved seamless harmony between the horn and driver, culminating in the Evolution Series—a meticulously crafted unit delivering unmatched sound quality.

Tweeter Unit

200mm tweeter horn

  • Low cut-off frequency with substantially increased acoustic power
  • Redesigned smaller and lighter membrane
  • Linear phase response less than 50 degrees deviation (4,000 – 20,000 Hz)
  • 28,000 Hz cut-off frequency
  • With the innovative MEZZO G3, tweeter phase correction is achieved through a unique rotary mechanism. This allows precise adjustment of the tweeter’s position, forward or backward, based on the listener’s position. A knob on the cabinet’s top enables effortless tweaking for optimal balance between the listener, tweeter, and midrange.

Midrange Driver

  • 670mm spherical wave horn
  • Ultra-low compression ratio
  • Large linear stroke
  • 27 Ohm driver impedance
  • Unique spheric-dome diaphragm with exclusive AirGate frequency filtering technology
  • 107dB/W/m sound pressure level


The perfect crossover.

The passive crossover incorporates cutting-edge technological advancements, including the SphericLowCut filter, AirGate technology, and PolarizationPlus circuit, establishing new standards in innovation. These advancements are paired with premium-quality components. Crafted in Germany with meticulous care, the NatureCapPlus capacitor features a sophisticated design with special foil electrodes and a cellulose fiber compound dielectric impregnated with organic oils. Compared to the previous XD series capacitors, the NatureCapPlus is approximately 25 times larger and securely mounted to the circuit board with specially manufactured brackets.


XB12 bass driver


Introducing a revolutionary bass concept crafted exclusively for the MEZZO G3. In comparison to its predecessor, the voice coil diameter is increased from 100mm to 153mm, creating a robust 6-inch motor structure. This upgrade delivers impressive force factor and power handling while substantially reducing thermal compression. Meticulously crafted, the motor structure consists of two high-quality magnets magnetized in Europe’s largest 200,000-volt facility. With a significant voice coil, it efficiently transfers the power of the permanent magnet with a 1.15 Tesla flux density to a circumference of 480mm—a remarkable 50% increase from the previous model.

The XB12 employs low-carbon steel pole plates, meticulously crafted for peak performance. Its spider features a patented dynamic profile with a progressive surround design, ensuring exceptional linearity even at maximum diaphragm excursion. The surround, crafted from low-loss NBR (Acrylonitrile Butadiene Rubber), enables swift and accurate transient response. Crafted from a blend of long-fiber paper and carbon fiber, the diaphragm is exceptionally sturdy and resistant to torsion, allowing for precise pistonic excursion during transients and decay. The XB12’s SingleFrame chassis boasts robust die-cast aluminum cantilevers, enclosing the magnet for a solid material bond around the moving parts of the motor structure. Experience unparalleled bass driver technology and performance with the XB12, reinforcing the unmatched and uncompromising nature of the MEZZO G3.


Bass amplifier


The active subwoofer within the MEZZO G3 is driven by the G3-1000 power module, a fully integrated power amplifier delivering 1,000 watts of power, providing ample headroom for detailed EQ settings. Speaker-level input terminals are included for direct connection to integrated amplifiers or power amplifiers. Additionally, XLR connectors are available for line-level inputs. The signal tap features high impedance, balanced, and transformer-coupled characteristics, with a floating circuit ground to eliminate hum and simplify connection to balanced and bridged amplifier designs. All electronics benefit from state-of-the-art E-Fuse circuit protection, ensuring rapid and secure fusing while optimizing sound quality compared to conventional fuses.


Digital crossover.


The bass power amplifier showcases an advanced digital sound processor, providing unparalleled precision and bit accuracy surpassing analog technology. Avantgarde Control Software enables the programming of additional settings like high and low pass filters, equalizers, and more. This newly redesigned user interface ensures intuitive operation, enabling effortless adjustment of parameters to accommodate room acoustics or personal listening preferences. Perfect for enhancing your listening pleasure, it’s a must-have for any music lover looking to optimize their sound.

Unlock the power of precise audio customization with this cutting-edge 8-band equalizer housed within the DSP. Tailor your bass response to perfection, whether you’re fine-tuning for different music genres or optimizing for your unique room acoustics. Experience unparalleled control over your sound, elevating your listening experience to new heights.



  • Frequency range satellite: 170-28,000 Hz
  • Frequency range Subwoofer: 18-350 Hz
  • Power handling: 100 Watt
  • Sensitivity (1 Watt/1 m): > 107 dB
  • Crossover frequencies: 170/3,500 Hz
  • Nominal impedance: 18 Ohm
  • Recommended amplifier power: > 10 Watt
  • Recommended room size: > 20 sqm
  • Coplanar driver alignment: yes
  • OmegaDrive: yes
  • AirGate: yes
  • NatureCapPlus incl. PolarizationPlus circuitry: yes


  • Horn type: spherical horn
  • Horn aperture angle: 180 Degrees
  • Horn diameter midrange: 670 mm
  • Horn diameter tweeter: 200 mm


  • Diameter midrange: 170 mm / 7 inches
  • Diameter tweeter: 25 mm / 1 inch


  • Driver size: 300 mm / 12 inches
  • Number of drivers: 2x XB12
  • Voice coil diameter: 153 mm
  • Flux density: 1.15 Tesla / 480 mm
  • Pole plate: low carbon steel
  • Membrane material: Paper/carbon fiber compound


  • Output power (RMS): 1x 1000 Watt
  • Digital crossover: DSP
  • Equalizer: 8 Band EQ
  • Digital room adjustment: yes
  • Inputs: 1x SPKR + 1x XLR


  • iTRON voltage/current converter technology : patented
  • Fully balanced circuit: yes
  • Single-ended circuit: yes
  • Zero Feedback: yes
  • Without negative feedback: yes
  • Power: 2 x 100 Watt


  • High Performance Multi Contact Connector: yes
  • Semi-active version: yes
  • Fully active version with iTRON amplifier : yes


  • Dimensions width: 670 mm
  • Dimensions depth: 720 mm
  • Dimensions height (+/- 15 mm): 1,714 mm
  • Weight: 298 lbs

Download DUO GT manual


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