Triangle Solstice Loudspeakers Introduce New Horn Tweeters and French Made Driver Technology

Triangle has replaced its long running Esprit range with Solstice, a new loudspeaker lineup developed and manufactured in Soissons, France. More than a cosmetic refresh, the Triangle Solstice series arrives with a redesigned horn tweeter, new driver architecture, revised cabinet construction, and an integrated base intended to give the French specialist a more cohesive platform for its next generation of stereo speakers.

For more than three decades, Triangle’s Esprit range built a reputation for high sensitivity, natural tonal balance, and strong value. Solstice represents the next chapter, introducing new technologies throughout the lineup while aiming to preserve the musical character associated with Triangle loudspeakers.

Rather than another evolutionary Esprit update, Solstice has been developed from the ground up. Triangle says every major component has been re-engineered, with particular attention paid to frequency coherence, cabinet rigidity, and the reduction of unwanted coloration.

All New Loudspeaker Series

The Solstice line comprises three models: the Solstice 8 floorstander, Solstice 3 bookshelf speaker, and Solstice C3 center channel. Designed as a coherent platform for stereo and home cinema systems, the range shares Triangle’s new driver technologies, crossover approach, and cabinet architecture. Finishes include white, black, teak, and birch, while matching stands are available for the Solstice 3.

Solstice 8: The flagship floorstander uses a three-way bass-reflex design with a 25 mm horn-loaded tweeter, a 16 cm cellulose-pulp midrange driver, and a pair of 16 cm woofers with concave cones. Triangle specifies a frequency response of 38 Hz to 22 kHz and RMS power handling of 130 watts. Its dual terminal arrangement supports conventional single-wire connection, bi-wiring, or bi-amping. The Solstice 8 is intended for rooms measuring roughly 15 to 50 m², or about 160 to 540 square feet.

Solstice 3: The compact standmount uses a two-way bass-reflex design with a 25 mm horn-loaded tweeter and a 16 cm cellulose-pulp midrange/bass driver. Triangle specifies a frequency response of 48 Hz to 22 kHz and RMS power handling of 90 watts. Its cabinet base is designed to integrate directly with Triangle’s matching S05 stand. The Solstice 3 is recommended for rooms measuring roughly 10 to 35 m², or about 108 to 377 square feet.

Solstice C3: The center channel employs a two-way sealed design with a 25 mm horn-loaded tweeter and twin 16 cm cellulose-pulp midrange/bass drivers. It can be positioned horizontally beneath a display or used vertically as a left or right channel. Triangle specifies a frequency response of 50 Hz to 22 kHz, RMS power handling of 120 watts, and 92 dB sensitivity. That sensitivity is closely matched to the Solstice 8 and Solstice 3, helping maintain consistent tonal balance across the front soundstage in a matched home cinema system.

Speaker Drivers

Triangle developed every Solstice driver specifically for the new lineup, rather than adapting existing units from the Esprit range. The goal is greater consistency between models, with shared driver technology and voicing across stereo and home cinema configurations.

Tweeter Innovation

All three Solstice models use Triangle’s new TZ2540MG horn tweeter. According to Triangle, the design combines two acoustic concepts not previously used together in one of the company’s tweeters.

The horn profile follows the OS-SEW (Oblate Spheroid Super Elliptical Waveguide) principle, which Triangle says is intended to promote more even high-frequency dispersion. The claimed benefits include a wider listening area, a more stable soundstage, and more consistent tonal balance beyond the central listening position.

A barrel-shaped cutout at the base of the horn is designed to create volumetric compression near the suspension point. According to Triangle, this improves behavior around the crossover region and supports smoother integration between the tweeter and midrange driver.

The TZ2540MG uses a 25 mm aluminum/magnesium alloy dome that Triangle says builds on materials employed in its Esprit 40th and Magellan 40th ranges. The company says the alloy increases diaphragm stiffness while helping to reduce the metallic coloration sometimes associated with pure aluminum domes.

The tweeter also incorporates a neodymium ring motor with an open center and rear absorption chamber. Triangle says this configuration is intended to limit internal reflections and reduce distortion.

At the horn’s output, Triangle employs a newly designed, one-piece phase plug. Injection-molded as a single component, its geometry draws on the barrel-shaped structure of the horn. The design is intended to promote more even high-frequency dispersion and more consistent off-axis performance.

Midrange and Bass Drivers

The 16 cm drivers use a new arch-shaped, die-cast aluminum basket designed to increase structural rigidity while improving airflow around the rear of the cone. Triangle says the revised structure also helps limit basket resonance that could affect midrange clarity, particularly at higher listening levels.

Triangle continues to use natural cellulose pulp for its midrange cones, a material the company associates with neutral tonal balance and natural reproduction of voices and instruments. A new rear-gluing assembly process is designed to increase the effective radiating surface area and improve linearity across the driver’s operating range.

The Solstice 8 uses twin bass drivers with concave cones and no conventional dust caps. Triangle says the concave profile creates a stiffer radiating surface, helping to reduce distortion at higher excursions while maintaining clean, controlled low-frequency output. It also gives the driver a cleaner, more distinctive appearance.

Cabinet Construction

Triangle says the Solstice enclosure was engineered for acoustic neutrality, with the goal of minimizing the cabinet’s contribution to the reproduced sound.

The company’s DVAS (Driver Vibration Absorption System) integrates the drivers into the speaker structure to help reduce vibration. Triangle says the approach increases cabinet rigidity and attenuates vibrations generated by the midrange driver, with the intended benefits of greater clarity, detail, and dynamic expression.

Solstice cabinets are constructed from high-density MDF. The Solstice 3 weighs 12.9 kg (28.4 lb), the Solstice C3 weighs 11.75 kg (25.9 lb), and each Solstice 8 weighs more than 30 kg (66 lb). All external cabinet edges are rounded to help reduce diffraction and support more even sound dispersion, which Triangle says contributes to more precise stereo imaging.

Crossover and Connectivity

The crossover network uses air-core inductors, MKT capacitors, and cement-coated resistors, with OFC (oxygen-free copper) internal wiring throughout.

The Solstice 8 features dual binding posts for bi-wiring or bi-amping, while the Solstice 3 and Solstice C3 use single terminal blocks. All models accept standard speaker cable terminations, including banana plugs and spade connectors.

Integrated Base

The Solstice 8 introduces Triangle’s new integrated base, which combines mechanical isolation, vibration control, and bass-reflex loading in a single structure.

Its Hidden Laminar Bass-Reflex Port is routed through the base rather than the cabinet itself. Triangle says the laminar-flow design is intended to reduce turbulence and port noise while eliminating visible port openings from the enclosure.

The base uses a dual-material construction that combines a cast-iron honeycomb structure with a thick silicone outer layer. The cast iron adds mass and rigidity, while the silicone layer is intended to absorb vibration and help mechanically decouple the loudspeaker from the floor.

Triangle has also built a 2-degree rearward tilt into the base to better align the tweeter’s output with a seated listening position and widen the usable listening area.

The Solstice 8 includes adjustable spikes and counter-spikes for hard floors or carpeted rooms. Triangle-logo caps conceal the hardware once installed.

Exterior Finishes

Solstice speakers are available in four finishes: Teak, Birch, White, and Black Ash. The wood-effect options use a vertical grain orientation, and each model includes color-matched magnetic grilles.

Sculpted silicone surrounds frame each driver and are matched to the cabinet finish, while champagne-finish aluminum trim rings add a more polished visual detail around the drivers.

The optional S05 stands are designed specifically for the Solstice 3 and are available in Black, White, Teak, and Greige, the latter intended to complement the Birch finish. The speaker’s base locks directly into the stand’s top plate for a more secure and visually integrated installation.

Triangle Solstice Series Specifications

The Bottom Line 

Triangle is not treating Solstice as a routine Esprit refresh with a new veneer and some upgraded crossover parts. The new line is built around a redesigned acoustic platform that includes the TZ2540MG horn tweeter, new 16 cm cellulose-pulp drivers, DVAS cabinet construction, revised crossovers, and, in the Solstice 8, an unusually ambitious integrated base that combines mechanical isolation, a hidden laminar bass-reflex port, and a 2-degree listening-axis tilt.

That makes Solstice most compelling for music listeners who want a properly engineered, visually distinctive French loudspeaker system rather than another generic rectangular box with a familiar driver complement. The Solstice 8 should appeal to buyers building a serious two-channel system in a medium to larger room, while the Solstice 3 and C3 offer a logical route into a matched stereo or three-channel front soundstage.

The limitation, at least for now, is system breadth. Triangle has launched Solstice with a floorstander, standmount, and center channel, but no dedicated surround, on-wall, height speaker, or matching subwoofer. That makes it a strong fit for stereo and front-stage home cinema systems, but less complete for buyers planning a fully matched Dolby Atmos installation.

Competition will come from Focal’s Theva series, DALI’s SONIK range, Perlisten’s A-Series, and Elipson’s Prestige Facet II lineup. Focal offers French design and Slatefiber driver technology; DALI SONIK provides a broader home cinema ecosystem; Perlisten brings more overtly performance-driven engineering and dedicated on-wall surround options; and Elipson offers the widest model selection, including surround, Atmos, LCR, center, bookshelf, and floorstanding options.

Triangle’s advantage is that Solstice feels like a more comprehensive acoustic redesign than a simple replacement range, with the horn tweeter, cabinet engineering, and Solstice 8 base doing most of the heavy lifting.

Price & Availability

The Triangle Solstice speaker line is available through Triangle and authorized Triangle retailers, with the following suggested retail pricing.

• Solstice 8 Floorstanding Speaker (Pair): €1,999, £1,999, $2,799
• Solstice 3 Bookshelf/Standmount Speaker (Pair): €999, £999, $1,349
• Solstice C3 Center Channel Speaker (Each): €575, £579, $750
• S05 Speaker Stand (Pair): $499 at Amazon

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