Напольная акустика — RossoFiorentino Arno 40

The Arno 40 is a passive floorstanding loudspeaker from Rosso Fiorentino, the Italian company whose range also takes in the Elba series 2, the Arno 20 stand-mount monitor, the ARNOcc centre channel, the ARNOsub subwoofer, the Siena series 2, the Pisa and the Florentia. Within that catalogue the Arno 40 is the tower of the Arno family, sharing its name with the smaller Arno 20 and with the centre and subwoofer that complete a multichannel set. The listed US price is USD 14,995 per pair.

Key specs that matter

Rosso Fiorentino describes the Arno 40 as a 2.5-way design with a port that fires rearward and downward. The published frequency response runs from 35 Hz to 25 kHz. Sensitivity is quoted at 90 dB for 2.83 V at 1 m, and the nominal impedance is 8 ohm with a stated minimum of 5 ohm. The maker suggests amplifiers delivering 25 to 150 W into 8 ohm. Each cabinet measures 44.5 inches high, 9.7 inches wide and 15.1 inches deep, and weighs 84 lb, which is roughly 38 kg.

Engineering and use context

Five drivers share the front baffle. A 1 inch silk dome tweeter uses a neodymium magnet, and it works above a 5.5 inch midrange with a treated paper cone. Three further 5.5 inch units with the same treated paper cones act as mid-woofers, so the bass load is spread over several small diaphragms rather than one large cone in a narrow cabinet. In a 2.5-way layout the lower cones are rolled off below the midband, while the upper cone runs on to the tweeter crossover. The enclosure is built from solid HDF combined with rubber and aluminium in a constrained layer damping method, where a flexible layer sits between stiff panels to turn panel vibration into heat. Because the port opening faces the rear and the floor rather than the listener, distance from the back wall and the surface under the speaker both affect how the port output couples to the room. Standard finishes are walnut and high gloss black, and optional finishes cover select leathers and a range of lacquers.

Pairing

A minimum of 5 ohm and a sensitivity of 90 dB leave the Arno 40 an easy load, so modest integrated amplifiers, valve models among them, can drive it. For home cinema the same family offers the ARNOcc centre and the ARNOsub, which keeps driver types and styling consistent across channels.

Alternatives

The Rosso Fiorentino Elba series 2 is the entry-level floorstander in the catalogue, built around two 6.5 inch fibreglass cone woofers and a 26 mm textile dome tweeter.