ESTELON FORZA ULTRA
The next-generation 4-way floorstander adds new Accuton drivers, crossover architecture derived from the flagship Extreme Mk II, and Stillpoints Ultra SS V2 isolation
Estelon has unveiled the Forza Ultra, a major evolution of its large-scale Forza floorstanding loudspeaker. While retaining the sculptural proportions and visual identity of the original model, the new version introduces redesigned drivers, crossover networks, internal signal paths and mechanical isolation.
The Forza Ultra remains a 4-way sealed design, but all drivers have been newly developed by Accuton to Estelon’s specifications. It also adopts connector technology first introduced in the flagship Extreme Mk II, along with a revised crossover architecture and Stillpoints Ultra SS V2 isolators as standard.
New Accuton 4-Way Driver System
Low frequencies are handled by two 250mm aluminum-dome woofers using neodymium motor systems and long-excursion designs. Estelon’s Symmetric Driver Loading arrangement is used so that both woofers operate under equivalent acoustic loading conditions.
The lower midrange uses a 190mm Crystalid mid-woofer, while a 90mm Crystalid midrange driver covers the central vocal and instrumental region. Accuton’s Crystalid diaphragm technology combines high stiffness with low moving mass, with the aim of improving transient response and lowering distortion.
High frequencies are reproduced by a new-generation 25mm diamond tweeter with a redesigned surround and multi-cavity rear chamber. Its response extends to 60kHz.
The crossover points are specified at 90Hz, 800Hz and 2.5kHz.
Flat Foil Direct Coupling Crossover
The crossover has also been redesigned around the new driver complement. Estelon says the networks were refined through a combination of measurement and listening, with particular attention paid to phase integration, time alignment and tonal balance.
Each crossover section is housed in its own acoustically isolated chamber to reduce vibration and microphonic effects.
The Forza Ultra also uses Estelon’s Flat Foil Direct Coupling architecture. Components are connected in a star configuration and hand-soldered directly onto dedicated mounting plates, eliminating conventional PCB material from the signal path.
Internal wiring is supplied by Kubala-Sosna.
Connector Technology from the Extreme Mk II
Instead of conventional binding posts, the Forza Ultra uses Estelon’s proprietary spring-loaded terminal system, first developed for the flagship Extreme Mk II.
High-purity copper foil ribbons connect the input terminals directly toward the crossover network, reducing the number of metal interfaces in the signal path.
The terminals accept banana plugs, spades and bare wire, while bi-wiring is also supported.
150kg Composite Cabinet with Stillpoints Isolation
The cabinet is constructed from Estelon’s characteristic marble-based composite material. Internally, the structure minimizes parallel surfaces and separates the drivers into dedicated chambers to reduce resonances and standing waves.
The curved outer profile is also intended to limit diffraction, while the geometry of the upper baffle helps control time alignment and high-frequency dispersion.
Stillpoints Ultra SS V2 isolators are supplied as standard. Using ceramic-bearing structures, they are designed to reduce mechanical energy transfer between the 150kg loudspeaker and the floor.
27Hz to 60kHz Response
The Forza Ultra is specified with a frequency response of 27Hz to 60kHz, with linear response quoted to 33kHz.
Nominal impedance is 3 ohms, with a minimum of 2.3 ohms at 51Hz, while sensitivity is rated at 89dB/2.83V. Power handling is specified at 400W, and Estelon recommends amplifiers rated from 20W upward.
Given the low nominal and minimum impedance figures, amplifier current capability is likely to be more significant in system matching than rated wattage alone.
The loudspeaker measures 1,675 × 617 × 682mm and weighs 150kg each. Estelon recommends listening rooms between 40 and 125 square meters.
Global Launch Begins in October
The Forza Ultra will begin its global rollout in October 2026.
Its first public appearances are scheduled for the Dutch Audio Event on October 10–11, followed by presentations in Luxembourg, the Warsaw Audio Video Show, dealer events in Phoenix, Anaheim and Montana, and the Guangzhou High-End Show in November.
New two-tone finishes will also be available, combining a Deep Dark Grey base with high-gloss colors. Bespoke finishes can be specified on request.
Pricing starts at €159,000 in Europe and US$227,000 in the United States.
By combining new Accuton Crystalid drivers, a 60kHz diamond tweeter, crossover and connector technologies derived from the Extreme Mk II, and upgraded mechanical isolation, the Forza Ultra represents a substantial redesign rather than a minor revision of the original Forza.
Official Website : https://estelon.com/speaker/forza-ultra/
