DUO SD Floorstanding Loudspeakers By Avantgarde Acoustic

Introducing the Avantgarde G3 Series, where the bionic horn principle reaches new heights. Experience unparalleled horn performance with exceptional efficiency and an extensive transmission range. The Duo SD model features an impressive 670 mm (26.4 in) spherical wave horn, delivering frequencies down to 170 Hz, while the integrated subwoofer extends this range to a deep 18 Hz. In the realm of spherical wave horns, size matters. Larger dimensions mean deeper lower bandwidths, drawing listeners into an immersive world of superior audio performance.

Discover the Evolution XM2 midrange driver, featuring a 170 mm chassis and a powerful Alnico magnet, engineered for expansive linear diaphragm excursion. Its innovative “soft mesh compound” diaphragm is built on a robust mesh framework, with microscopic openings sealed by a damping elastomer coating. This unique blend of rigid mesh and flexible lining creates a broadband absorption effect, effectively damping partial vibrations and minimizing unwanted resonances for superior audio clarity.

The DUO SD is equipped with the advanced XT3 tweeter, also found in Avantgarde’s flagship TRIO G3. Featuring a lightweight annular diaphragm, the XT3 extends the frequency range up to 28,000 Hz with a sensitivity of 107 dB. This results in exceptional clarity, precise focus, and a richer, more natural sound.

The subwoofer features the new high-performance XB12 driver in a bass-reflex configuration. Upgraded from the previous model, the voice coil size has been increased from 100 mm to an impressive 153 mm. This substantial 6-inch motor structure enhances power factor and handling capabilities, while significantly reducing thermal compression for superior performance.

The G3-500 bass amplifier delivers 500 watts of power and features an advanced digital sound processor. Its new user interface enables easy sound customization to match individual preferences and ensures seamless integration into various room environments.

107 dB Efficiency

Introducing the new Evolution driver generation, designed to deliver extended dynamics and an exceptionally pure sound.

200 mm – Supertweeter

Featuring the innovative XT3 tweeter unit, this model boasts a new Long Throw Horn and an extended Supertweeter frequency range, achieving record-low distortion levels.

670 mm Medium tone spherical wave horn

Discover the improved XM2 DUO Evolution driver, offering 107dB efficiency and enhanced with 18 Ohm Omega technology for superior performance.

XB12 BASSTRIMER

Featuring a 12-inch XB12 driver with a 153mm voice coil and 1.15 Tesla flux density over a 480mm coil length, this unit offers exceptional performance. The diaphragm is crafted from a composite of long fiber paper and carbon fiber, ensuring superior sound quality.

Coplanar driver alignment.

In the G3 Series, all drivers are aligned on a single axis, ensuring that the acoustic centers are on the same plane. This precise alignment means the distance from each driver to the listener is identical, allowing signals from the tweeter, midrange, and woofer to arrive simultaneously for accurate sound reproduction.

Modular technology.

The electronics are contained within easily replaceable technology modules, offering effortless system expansion or upgrades even after years of use.

Current amplifier.

Experience the patented iTRON current fully active engine, meticulously designed to achieve flawless control over membrane vibrations, resulting in unparalleled sound quality.

INDIVIDUALIZATION

Every hue within the Avantgarde 12-color collection is thoughtfully chosen to grace your horn speakers. These shades effortlessly blend timeless elegance with expressive allure, seamlessly integrating into your interior design while beautifully accentuating the horns.

One speaker. Two versions.

PASSIVE VERSION.
The passive version is crafted for use with external HiFi amplifiers. Boasting an impressive 107 dB efficiency and 27 ohms impedance, this speaker is remarkably easy to drive, making it perfectly suited for even low-power amplifiers. It’s the ultimate match for top-tier high-end amplifiers worldwide.

ITRON VERSION.
In the ITRON version, the speakers are equipped with built-in amplifiers, eliminating the need for additional external power sources. Avantgarde has engineered integrated electronics based on groundbreaking electro-physical principles, setting them apart from any other amplifier available. This pioneering technology marks us as the first manufacturer globally to successfully implement the current amplifier approach, previously deemed technologically challenging. Experience a heavenly sound like no other.

Module technology for diversity & timelessness.

Every model features a replaceable technology module, seamlessly connected to the speaker through a multi-pin power connector. This design facilitates easy upgrades, whether it’s integrating ITRON technology or adding a wireless module to your passive loudspeaker. This ensures that even years down the line, you can effortlessly transition to the latest digital technology available, ensuring a sustainable investment for generations to come.

Driver technology

Over five years of meticulous refinement, experimentation, enhancement, precise measurement, and extensive listening have gone into perfecting the new G3 Evolution driver series. In the Evolution series, the horn and driver seamlessly blend into a harmonious unit of unparalleled quality.

Experience & Innovation

With over 30 years of exclusive and dedicated focus on horn technology, Avantgarde has amassed a wealth of unparalleled expertise. This extensive experience has led to numerous groundbreaking innovations, setting us apart in the industry.

Engineering art.

We exclusively utilize premium materials, adhering to the principles of top-tier German engineering throughout the development and production process.

TWEETER UNIT

200mm tweeter horn

• Lower cut-off frequency with substantially increased acoustic power
• Smaller and lighter membrane
• Linear phase response less than 50 degrees (4,000 – 20,000 Hz)
• 28,000 vibrations per second

MIDRANGE UNIT

670mm spherical wave horn

• Compression ratio tending toward zero
• Large linear stroke
• Impedance of 17 Ohm
• Spheric -Dome diaphragm with AirGate air filter technology
• 107dB sound pressure

The perfect crossover.

Featuring the innovative SphericLowCut filter, Airgate technology, and PolarizationPlus circuit, our passive crossover sets new standards in audio engineering. Crafted with the highest quality components, including the meticulously handcrafted NatureCap capacitor from Germany. Unlike conventional designs, the NatureCap utilizes precisely rolled aluminum foil electrodes and a cellulose fiber compound impregnated with biological oils for superior performance. This capacitor, approximately 25 times larger than those in the XD series, is securely mounted to the circuit board using specially designed brackets.

XB12 bass driver

RADICAL BASS. RADICAL DRIVE.

For the DUO SD, we’ve engineered an entirely new drive system. Compared to its predecessor, the voice coil has been expanded from 100mm to 153mm, boasting a massive 6-inch motor structure that achieves exceptional power factor and handling capabilities while minimizing power compression.

This motor structure features two premium-grade magnets, magnetized in Europe’s largest 200,000-volt facility. With a 1.15 Tesla flux density, the force of the permanent magnet is transmitted to a voice coil circumference of 480mm, marking a remarkable increase of over 50% from the previous model.

Crafted from low-carbon steel, the pole plates designed for the XB12 ensure high linearity even at maximum diaphragm excursion. The centering mechanism boasts a patented dynamic profile with a progressive surround design made of low-loss NBR (acrylonitrile butadiene rubber), ensuring rapid and precise transient response.

The diaphragm is composed of a composite material combining long-fiber paper and carbon fiber, offering exceptional strength and torsional stiffness for accurate pistonic excursion during transient and decay events.

The XB12’s new SingleFrame chassis features robust die-cast aluminum cantilevers that envelop the magnet, creating a stable composite of materials around the motor structure’s moving components. Representing an Avantgarde bass reference, the XB12 exemplifies the uncompromising excellence of the G3 series.

Bass amplifier

STRENGTH IN ALL SITUATIONS.

The active subwoofer of the DUO SD is powered by the G3-500 power module, featuring an integrated 500-watt amplifier that ensures ample headroom, even with complex EQ settings.

Remote activation of the subwoofer is possible via a 12-volt switching voltage input. Direct connection to integrated amplifiers, power amplifiers, or receivers is facilitated through speaker-level input terminals. Additionally, line-level inputs are available via XLR terminals. The signal tap is not only high-impedance but also balanced and transformer-coupled, maintaining a floating circuit ground to prevent hum loops and simplify connection to balanced and bridged amplifier designs.

All electronics are protected by a cutting-edge E-Fuse circuit, offering faster and safer protection compared to conventional fuses, while also optimizing sound quality.

Digital crossover.

EVERYTHING UNDER CONTROL.

The bass power amplifier comes equipped with an advanced digital sound processor, offering precision and bit accuracy unmatched by analog technology. By utilizing a digital crossover, all passive filter elements in the signal path are eliminated, ensuring optimal sound quality.

Adjusting the subwoofer volume is effortless with two buttons on the DSP display. Further customization options, including high and low pass filters, equalizers, and more, can be accessed and programmed using the Avantgarde Control Software. The DSP features 2 x LAN sockets for daisy-chaining multiple subwoofers simultaneously, with an optional USB connection available.

The user interface has undergone a complete overhaul, now providing intuitive and straightforward operation for the customer. This allows easy adjustment of parameters to suit room acoustics or listening preferences. The BASS-BOOST control enables fine-tuning of the low-frequency response, from “linear” to “fat.”

For precise frequency adjustments, the DSP includes an 8-band equalizer, allowing each band to be boosted or cut by up to 4 dB. This feature enables customization of the bass response to match various music genres or reduce broadband room resonances.

The LPF-RANGE slider adjusts the upper crossover frequency of the subwoofer, influencing the system’s tonal balance. Increasing the frequency results in a warmer and fuller sound character, while lowering it creates a more dynamic and punchy audio profile.

FILTER 1 & 2 are narrow-band “notch” filters with level cuts of -3 dB or -6 dB, designed to eliminate or reduce unwanted resonant frequencies in the room. These versatile filters provide precise control over the audio output, ensuring an optimal listening experience.

SYSTEM DATA

• Frequency range satellite: 170-28.000 Hz
• Frequency range subwoofer: 18-350 Hz
• Load capacity: 100 Watt
• Efficiency: (1Watt/1m) > 107 dB
• Crossover frequencies: 170/3.500 Hz
• Nominal impedance: 18 Ohm
• Recommended amplifier power: > 10 Watt
• Recommended room size: > 20 qm
• Coplanar driver alignment: Ja
• OmegaDrive: Ja
• AirGate: Ja
• NatureCap incl. PolarizationPlus circuitry: Ja

HORN

• Horn type Spherical: horn
• Horn opening angle: 180 degree180 Grad
• Horn diameter midrange: 670 mm
• Horn diameter tweeter range: 200 mm

HORN DRIVERS

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

BASS DRIVER

• Treiber Größe: 300 mm / 12 inch
• Driver quantity: 1 x XB12
• Voice coil diameter: 153 mm
• Flux density: 1.15 Tesla / 480 mm
• Pole plate: low carbon steel
• Membrane material: Paper/carbon fiber compound

BASS TUNE

• Output power (RMS): 1 x 500 watt
• Digital crossover: DSP
• Equalizer: 8 Tape
• Digital room adjustment: Yes
• Inputs: 1 x SPKR + 1 x XLR

MODULAR STRUCTURE

• High Performance Multi Contact Connector: Yes
• Partially active design: Yes
• Fully active version with ITRON amplifier: Yes

ITRON ELECTRONICS

• ITRON voltage/current converter technology: patent pend.
• Fully balanced circuit: Yes
• Single stroke circuit: Yes
• Zero feedback: Yes
• Without negative feedback: Yes
• Power: 2 x 100 watt

ABMESSUNGEN / GEWICHT

• Dimensions width: 670 mm
• Dimensions depth: 652 mm
• Dimensions: (+/- 10 mm) 1.552 mm
• Weight: 94.0 kg

 
 
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