Symbiotic Drive concept

This 3-way design is the culmination of Indiana Line’s passion and decades of experience in loudspeaker systems. It is built around our proprietary, holistic Symbiotic Drive approach, in which drive units, cabinet, and crossover are developed from the ground up as one coherent electroacoustic system. Specially selected materials – Curv (woven polypropylene), Al-Mg, MDF, and bamboo – are used throughout. Lira 6 acts as an acoustic sculpture that engages with the listening space, embodying a dual nature: technological precision and artistic soul. The purity of form is underscored by trim rings that conceal mounting hardware and sit perfectly flush with the baffle.

Dynamic, clean form

The gently rear-tilted cabinet provides ideal time alignment of the transducers at the listening position while lending the loudspeaker a dynamic stance. Lira 6 features non-parallel side walls that converge toward the center in the vertical plane (wider at the base, tapering toward the top). This reduces internal standing waves and gives the loudspeaker a slender, weightless look. The MDF enclosure is finished in multiple layers of durable matte lacquer (PE + PU) for long-lasting beauty and toughness. Internal bamboo bracing effectively damps vibration, tying into the side, rear, and notably the 21-mm-thick front.

A loudspeaker shaped like an ancient lyre

The magnetically attached grille is made from an acoustically transparent fabric that does not disturb tonal balance. Fitted, it transforms the loudspeaker into a minimalist monolith. A 10-mm distance between the black grille frame and cabinet edges emphasizes the trapezoidal architecture, accentuating the crisp side profile and subtly recalling the silhouette of the ancient lyre – an instrument famed for harmony yet defined by simple lines. These details allow Lira 6, modern as it is, to tell many musical stories with style.

Advanced tweeter transducer

Our proprietary 28-mm aluminum–magnesium (Al-Mg) dome tweeter offers 21% more radiating area than standard units, translating into higher sensitivity. A narrow surround reduces moving mass, while the precisely formed 50-micron dome ensures exceptionally clean treble. The motor uses a refined neodymium assembly with a copper shorting ring and advanced cooling. A hybrid rear-chamber damping system lowers the resonance frequency, resulting in extremely low distortion.

Tweeter within the Symbiotic Drive philosophy

The 28-mm tweeter is integral to the holistic Symbiotic Drive concept, combining the 3D-Guide waveguide, the EQ-Ring phase corrector and an LC filter within the crossover. The outcome is class-leading high-frequency dispersion and directivity tailored to integrate perfectly with the dedicated midrange driver below. In addition, the inclined baffle and waveguide align the two drivers superbly in phase. Identical neodymium motor topologies keep their voice coils aligned to the listener within 1 mm – an unheard-of level of precision at this price point.

Curv-diaphragm midrange driver

A 4.5-inch midrange of formidable capability operates in its own sealed sub-enclosure. It features a cast-aluminum basket and a ground-up Curv diaphragm, combining high dynamic headroom with mechanical stability and even off-axis dispersion. Drive comes from a neodymium UHVC (Underhung Voice Coil) drive – topologically identical to the tweeter’s. A purpose-designed Dual-Wave suspension for the midrange and a precisely profiled trim ring that masks the basket stabilize the diaphragm and control dispersion. This allows the midrange to shoulder part of the upper band from the tweeter and hand off seamlessly to the pair of woofers operating below.