A specially tuned Class-D amplifier with an integrated DSP controller delivers up to 1,000 watts of power to the drivers. The digital control enables precise tuning to the room and listening environment – creating a bass performance that is not just heard, but physically felt.

What sets it apart: the downfiring configuration of both drivers, combined with oversized, downward-facing reflex ports. These generate an acoustically in-phase air mass that increases efficiency in the low bass region by up to 6 dB – with less excursion and greater dynamic headroom.

The Twin Sub can be used either as a single unit (stereo mode) or in pairs (dual mono), adapting effortlessly to any room concept – whether placed centrally between the TRIOs, next to a wall, or directly alongside the speaker bases.

Available in four elegant wood veneer finishes and with a custom-paintable front panel, the Twin Sub integrates visually and acoustically with the TRIO G3. A bass solution designed without compromise – for maximum performance in minimal space.

Let’s be clear: the XB12 is quite possibly the most capable driver ever developed for a large horn-loaded bass system.

Its voice coil measures a full 153 mm in diameter. With this massive 6-inch motor structure, we achieve outstanding values in power handling and efficiency, while significantly reducing power compression. The motor assembly features two high-performance magnets, magnetized in Europe’s largest 200,000-volt facility. The enormous voice coil transfers the force of the permanent magnet – with a flux density of 1.15 Tesla – across a coil circumference of 480 mm.

We use low-carbon steel for the pole plates, which have been specially developed for the XB12. To ensure high linearity even at maximum excursion, the suspension spider has a patented dynamic profile with progressive behaviour of its surround. The surround itself is made of low-loss NBR (acrylonitrile butadiene rubber) to achieve a fast and clean transient response. The diaphragm comprises a composite of long-fibre paper and carbon fibre – extremely stable and torsion-resistant for a precise piston movement.

The XB12’s new SingleFrame chassis features robust die-cast aluminium outriggers , which also enclose the magnet to ensure complete mechanical stability of the motor structure’s moving parts.

The XB12 is the ultimate reference in bass driver technology and performance It is a testament to the unique and uncompromising nature of the G3 series.

In stereo configuration, a single Twin Sub handles both channels. This not only saves space but also creates a clean, elegant setup – ideal for living rooms, smaller listening spaces, or anywhere discreet integration is key. Despite its compact nature, the sound remains grand: deep, precise, and impressively present. Thanks to the Twin Sub, even in limited spaces the full potential of the TRIO G3 becomes tangible.

For those seeking the absolute maximum in low-frequency control and spatial imaging, the dual-mono configuration is the answer. Two Twin Subs – one per channel – open up new dimensions of performance: bass is distributed more evenly throughout the room, becomes more tactile, more powerful, and more precise. Especially in larger or acoustically challenging spaces, the benefits are clear: greater control, greater dynamics, and deeper emotional impact. With power shared between two subwoofers, maximum volume increases – without audible distortion, even during quiet passages that suddenly surge with energy.

Whether as a discreet addition or a no-compromise bass duo, the Twin Sub integrates seamlessly into any setup and brings out the full sonic power of the TRIO G3 – wherever music is more than just sound: a deeply moving experience.

Thanks to its space-saving design, the Twin Sub integrates seamlessly into living or listening environments – ideal for a modern, stylish setup. It opens up new possibilities for a room-friendly yet powerful low-frequency solution.

When using a single Twin Sub in stereo configuration, a central placement – for example between the TRIO loudspeakers – is recommended. In dual-mono operation with two Twin Subs, they can be positioned to the sides of the TRIOs, flanking them from the outside, or – using the optional spacers – placed directly alongside the speaker bases.

The Twin Sub is not just an optional subwoofer solution for TRIO satellites – it also serves as a powerful low-frequency extension for a wide range of speaker systems.
It is, moreover, an ideal match for other Avantgarde Acoustic loudspeakers such as the DUO or MEZZO.

Even in full-range systems, a single Twin Sub in stereo configuration can be a highly effective enhancement. With both speaker-level and XLR inputs for left and right channels, it offers versatile connectivity. Thanks to the downfiring layout of its dual drivers and bass reflex ports, the Twin Sub achieves exceptional acoustic coupling to the room. As a result, even a single unit delivers outstanding low-frequency reinforcement across many setups.

Like all Avantgarde Acoustic subwoofers, the Twin Sub features an integrated DSP with a wide range of tuning options. This ensures flexible placement in any room – whether used in stereo or dual-mono mode.

The Twin Sub enclosure rests on a solid, U-shaped cast aluminum base with four solid outriggers.
These not only contribute to acoustic performance – by providing the defined ground clearance required for the downfiring design – but also establish a clear visual connection to the TRIO G3. The leveling spikes are identical to those of the TRIO and allow for precise, tool-free adjustment on any surface.

For seamless integration, the Twin Sub comes with a spacer set that allows it to be positioned closely against the TRIO’s aluminum base profile. The spacing is designed so that the subwoofer nearly disappears into the visual shadow of the loudspeaker – understated in appearance, present in sound. The result is a setup that blends discreetly into the room while delivering a remarkably powerful low-frequency foundation.