A sleek design profile featuring a set of 5 1/2” high-performance drivers, engineered to handle demanding power levels with precision.

An unconventional acoustic load is paired with an extremely refined crossover circuit, both in terms of components used and in the seamless blending of sounds with great musicality, all while attentively catering to the amplifier’s needs. The sophisticated cabinet is constructed using various materials through the layer constraint technique, resulting in an almost resonance-free structure, with all hardware designed in-house and manufactured here in Italy.

Enclosure

To ensure an authentic listening experience, sound should come only from the drivers, not the cabinet. Vibrations in cabinet panels cause distortion, so they must be as inert as possible. Rosso’s constrained layer damping, used throughout the ARNO series, minimises internal resonances by combining materials with complementary acoustic properties. This approach enhances rigidity, damping, and overall clarity. Listeners enjoy a purer sound, a more defined soundstage, and better bass response. Additionally, fibrous damping materials and air “cushions” help absorb cabinet resonances, improving energy distribution inside the speaker.

Drivers

We design and develop nearly every aspect of a Rosso loudspeaker in-house. However, Rosso Fiorentino's commitment to advancing audio technology led us to collaborate with specialised manufacturers, crucial for achieving the highest quality. This approach was key in developing our drivers, where partnering with a renowned Italian manufacturer turned our ideas and designs into tangible, premium products. By working closely with them, we optimised every detail of the driver’s design, from materials to manufacturing processes. This meticulous engineering has resulted in a truly unique line of Rosso drivers, crafted exclusively for our ARNO speakers.

Crossover

In our design philosophy, we don’t follow a single electroacoustic approach but select the best technique for each product. Rather than rigidly favoring first-order crossovers, we use the most effective method to achieve our goals. The outcome is key, always guided by our expertise in electroacoustics and hands-on experience. For the ARNO40, the crossover was engineered from scratch with top-quality components and exclusive in-house elements like custom coils. The circuit design focuses on making the impedance more resistive and stable, allowing the amplifier to operate more efficiently and ensuring superior sound quality.

Hardware

All mechanical parts are made here in Italy and designed by us. From aluminum vented ports to spikes and counter-spikes, to front panels milled from 8mm aluminium sheets where the drivers are housed. Even the connectors are made here by Rosso Fiorentino from pure copper, which is then plated in gold and palladium for eternal durability. Not to mention the anodised aluminium bushing with a friction lock to securely hold any type of cable.