Estelon Introduces Forza Ultra Four-Way Loudspeaker.
Estonian loudspeaker manufacturer Estelon has introduced the Forza Ultra, a new four-way passive loudspeaker that builds on the company’s existing Forza platform. The model incorporates technologies developed for Estelon’s flagship range, including new Accuton drivers, a redesigned crossover network, a proprietary connector system and Stillpoints Ultra SS V2 isolation.
According to the manufacturer, development of the Forza Ultra focused on retaining the original Forza’s scale, tonal balance and sculpted cabinet design while improving transparency, dynamic performance and bass control.
“Music carries memory and human expression. Our work is to protect those qualities as the signal moves through the loudspeaker,” says Alfred Vassilkov, Co-founder and Chief Designer of Estelon. “With the Forza Ultra, every engineering change serves the same purpose: the loudspeaker should draw less attention to itself, so the connection between listener and performance becomes more immediate.”
The Forza Ultra uses two custom 250 mm (11 inch) aluminium dome woofers with neodymium motor systems. Estelon’s Symmetric Driver Loading technology is designed to provide both woofers with the same acoustic load. A custom 190 mm (8 inch) midwoofer and 90 mm (5 inch) midrange driver use Accuton’s Crystalid membrane technology, while a 25 mm (1 inch) diamond tweeter handles the highest frequencies. According to Estelon, the tweeter extends to 60 kHz.
The redesigned crossover operates at 90 Hz, 800 Hz and 2.5 kHz. Estelon says the networks were tuned using measurements and critical listening, with attention to phase integration, time alignment and tonal balance. The crossover components are housed in acoustically isolated chambers.
Estelon’s Flat Foil Direct Coupling connects crossover components in a star configuration, with short cable runs and hand-soldered connections on a purpose-developed mounting plate. The signal enters through the company’s spring-loaded connector system, originally developed for the Extreme Mk II. The system supports banana plugs, spade connectors and bare wire, as well as bi-wiring.
Stillpoints Ultra SS V2 isolators are supplied as standard. According to Estelon, the system is intended to reduce the transfer of micro-vibrations between the 150 kg (330 lb) loudspeaker cabinet and the floor.
The cabinet is made from a proprietary marble-based composite and uses non-parallel internal surfaces and dedicated driver chambers. Its curved exterior is designed to reduce diffraction, while the front-panel geometry aligns the upper drivers and controls high-frequency dispersion.
The Forza Ultra measures 1,675 x 617 x 682 mm (66 x 24 x 27 inches) and weighs 150 kg (330 lb) per loudspeaker. Estelon specifies a frequency response of 27 Hz to 60,000 Hz, with linear response to 33,000 Hz, a nominal impedance of 3 ohms and a sensitivity of 89 dB at 2.83 V.
Estelon Forza Ultra Availability and Pricing
The Forza Ultra has an MSRP starting at €159,000 or US$227,000 per pair. Market introductions are scheduled to begin in October 2026, with demonstrations planned in Europe, the United States, Turkey and China.