Estelon Forza Speakers

Timeless design, powerful performance

The Estelon Forza is a statement of elegant power and refined performance. Standing at almost 1.7 metres, it perfectly balances aesthetic beauty with acoustic precision. Incorporating the finest materials and technologies from Estelon’s flagship models, the Forza offers a lifelike soundstage and an emotionally captivating listening experience.

Forza, as the name already suggests, is full of unimaginable refined power. As the electric current passes through the driver elements, the Forza becomes alive. Every nuance dances through the air creating a realistic soundstage and fills the listener with rich emotions. The Forza is bound to impress everybody.

Cabinet Technology

The Estelon Forza features a cabinet unlike any traditional box design. There are no parallel walls, and every surface, inside and out, is curved or contoured for acoustic benefit. After years of research and testing, Estelon developed their own proprietary marble-based composite material, along with a specialised moulding process, to achieve this complex and highly rigid structure.

The cabinet is extremely dense and stable, which minimises resonance and provides an ideal foundation for the drivers. Each driver is placed within its own carefully engineered enclosure, optimised for its specific function. The result is a structure that supports the drivers without adding its own character to the sound.

Inside, advanced dampening techniques were used with both natural and synthetic materials, chosen and positioned through rigorous testing. These materials absorb unwanted energy, supporting a clean and natural sound across the full musical spectrum.

Premium Driver System

Each Forza loudspeaker uses a precise combination of five drivers: two woofers, one mid-woofer, one midrange, and one tweeter. All are custom-designed in collaboration with Accuton, a world-renowned German driver manufacturer.

The two 250 mm aluminium sandwich woofers deliver powerful and accurate low-end performance, aided by their long linear excursion and high-stiffness membranes. The 190 mm mid-woofer, also using a stiff aluminium sandwich membrane, extends into the midrange with clarity and speed.

The 168 mm ceramic membrane midrange driver combines lightness and rigidity, producing natural and transparent sound across vocals, strings, and other instruments. At the highest frequencies, a 25 mm diamond membrane tweeter delivers exceptional resolution and microdetail, with an extended range up to 60 kHz.

All drivers are placed in dedicated chambers, with careful attention to geometry and bracing. The woofer chamber, with no parallel walls and internal curvature, helps eliminate standing waves and resonances. The mid-woofer and tweeter also have isolated chambers, shaped to control reflections and preserve clarity.

Symmetric Driver Loading

Forza features a symmetrical driver layout, where the woofers are identically loaded both inside and outside the cabinet.

This symmetry allows both woofers to move together without interference, resulting in cleaner, more accurate bass reproduction. We refer to this as Symmetric Driver Loading (SDL) technology.

Crossover Design

Forza uses second-order filters for the mid-woofer, midrange, and tweeter, and a third-order filter for the woofers. Crossover points are set at 75 Hz, 150 Hz, and 2 kHz.

Each crossover is designed to optimise time alignment, frequency integration, and tonal accuracy. Components are carefully selected, including capacitors from Mundorf and Jantzen, air-core copper foil inductors from Goertz, and steel-core inductors from Mundorf. All components are mounted on a custom plate, using a star-wired configuration and flat foil direct coupling to preserve signal integrity. Every connection is hand-soldered, and cable lengths are kept minimal for the cleanest signal path.

Custom Finishing

Forza cabinets are available in a wide selection of gloss finishes with custom options available.

Each cabinet undergoes a meticulous twelve-layer painting and polishing process, with every layer wet sanded and polished by hand. This finishing process takes several weeks and is performed by highly skilled artisans to ensure a flawless result.

Specification

Type: 4-way passive loudspeaker, sealed box

Frequency response: 27 – 60,000 hz (linear to 33,000 hz)

Power rating: 400 w

Nominal impedance: 3 ohms (min 2.3 ohms at 51 hz)

Sensitivity: 89 db/2.83 v

Minimum amplifier power: 20 w

Internal cabling: Kubala-Sosna

Cabinet material: Marble-based composite

Drivers:

Woofers: 2 x 250 mm cell aluminium sandwich (custom)

Mid-woofer: 190 mm cell aluminium sandwich (custom)

Midrange: 168 mm cell ceramic membrane

Tweeter: 25 mm cell diamond membrane

Dimensions: height: 1675 mm, width: 617 mm, depth: 682 mm

Net weight: 150 kg per piece

Recommended room size: 40 – 125 m²