ArtSound HPRO820 (pack of 2)

An 8-inch woofer, a pivoting tweeter, and a splash-resistant design: the HPRO820 is the most capable model in the Happi series. This round in-ceiling speaker embraces ArtSound’s signature minimalist philosophy — a frame barely 1 mm thick, a smooth, paintable magnetic grille — while pushing acoustic performance towards deeper bass and a wider sound dispersion, able to fill spaces of up to 60 m².

From living room to covered terrace

The Happi range takes its name from the Finnish word for oxygen and the outdoors. This is no coincidence: the choice of aluminium for the woofer cone and grille gives the HPRO820 a level of moisture resistance that extends its use well beyond conventional living spaces. Kitchen exposed to cooking vapours, bathroom, pool house, or covered terrace: all environments where a traditional speaker would quickly suffer from condensation. The HPRO820 is, however, only water-repellent, not waterproof — it must be protected from direct rain or heavy splashes.

In a living room or office, the 20 cm woofer delivers a frequency response starting at 50 Hz, providing a much more substantial low-end foundation than the 5.25” or 6.5” models in the same series. The aluminium-dome tweeter with neodymium magnet can be manually pivoted to direct the highs towards the main listening area, a valuable advantage when the speaker is not positioned directly above the listeners.

Discreet, seamless integration

Installing the HPRO820 requires only a circular cut-out of 245 mm in a suspended ceiling or hollow partition wall. ArtSound’s patented mounting system relies on self-clamping screws that pull the speaker tight against the mounting surface with just a few turns of a screwdriver. Once the speaker cable is connected and the unit is in place, the grille snaps on magnetically, with no visible screws or clips.

This aluminium grille has a satin, slightly textured finish that blends naturally into a white ceiling. For darker interiors or specific décors, a black version is available as an accessory (reference GRILLHPRO820B). The grille can also be repainted in a colour of your choice, provided you apply thin coats to avoid clogging the perforations.

Warm, engaging sound reproduction

Speakers designed to withstand humidity often have a nasal tone, a side effect of the protective coatings applied to the diaphragms. ArtSound avoids this pitfall by combining a treated aluminium cone, a separate tweeter, and a passive crossover tuned to smooth the transition between the two drivers. The result, according to the manufacturer, is a warm sound, with full-bodied bass and detailed yet precise reproduction of the upper frequencies.

With a sensitivity of 87 dB at 8 ohms, the HPRO820 works well with modest amplifiers — from 15 W per channel — while handling up to 100 W for more demanding setups. In large rooms or noisy environments, it may be wise to install a pair of speakers rather than a single one, in order to distribute the sound more evenly and avoid pushing the amplifier to its limits.

Technical specifications

Acoustic characteristics

• 2-way coaxial system
• Woofer: 8 inches, aluminum cone with rubber surround
• Tweeter: 0.75 inch, aluminum dome with neodymium magnet, adjustable
• Frequency range: 50 Hz - 20 kHz
• Sensitivity: 87 dB
• Impedance: 8 Ω

Power

• Recommended amplifier power: 15 - 100 W

Dimensions and weight

• Dimensions: 280 x 106 mm (Ø x depth)
• Unit weight: 1.95 kg

Construction

• Materials: ABS / aluminum grille
• Shape: round

Installation

• Cutout diameter: 245 mm
• Coverage area: < 60 m²

General information

• Available options: black grille (reference GRILLHPRO820B)
• Properties: paintable grille, resistant to water splashes