Triangle Solstice 3 & Solstice 8 Speaker Review
Here’s our review of the new Triangle Solstice 3 and Solstice 8 loudspeakers:
There is a certain kind of loudspeaker engineering you normally expect to find much further up the price ladder: horn-loaded tweeters, substantial mechanical isolation and cabinet structures designed specifically to control unwanted vibration.
Triangle has brought many of those ideas into its new Solstice range.
The Solstice 3 is the compact standmount model and the direct successor to the long-running Comète, while the larger Solstice 8 takes the same design philosophy into a three-way floorstanding speaker. Together, they mark the beginning of a new generation for the French manufacturer.
At £999 per pair for the Solstice 3 and £1,999 per pair for the Solstice 8, the aim is to bring technologies developed for Triangle’s more ambitious designs into a considerably more accessible range.
Buy Triangle Solstice 3 at Premium Sound — £999
Premium Design Without the Flagship Price
The first thing that stands out about the Solstice range is how much attention Triangle has paid to the cabinetry.
Both models are available in four finishes: Teak, Birch, White and Black Ash. Sculpted silicone surrounds frame the drivers, champagne-coloured trim adds a more premium finish, and magnetic grilles keep the front baffle clean when removed.
The wood finishes use a strong vertical grain that gives the speakers a warm, contemporary appearance, while the rounded cabinet edges are not purely decorative. By reducing sharp transitions around the front baffle, Triangle aims to minimise edge diffraction and improve stereo imaging.
A Ground-Up Cabinet Redesign
Solstice is not simply a cosmetic update of the outgoing Esprit designs. Triangle has redesigned the enclosure around its DVAS — Driver Vibration Absorption System.
Internally, the drivers are mechanically tied into the cabinet structure so that unwanted energy generated behind the cones is absorbed before it can transfer into the enclosure walls.
That matters because the cabinet itself should contribute as little as possible to what you hear. Uncontrolled enclosure vibration can blur stereo imaging and add unwanted character through the mid-bass. By controlling that energy more effectively, Triangle is trying to make the cabinet quieter and allow the drivers themselves to dominate the presentation.
The Two-Degree Base Is More Important Than It Looks
One of the most distinctive parts of both speakers is the base.
Triangle combines a cast-iron honeycomb structure with a thick silicone layer, creating a substantial mechanical interface between the cabinet and the floor or stand.
More unusually, the entire cabinet is tilted backwards by two degrees.
That angle helps acoustically align the drivers. Because the tweeter sits recessed inside its horn, its acoustic centre is positioned differently from the larger cone drivers. Tilting the cabinet helps compensate for that difference so that output from the drivers reaches the listening position more coherently.
The same principle is used on both the Solstice 3 and Solstice 8, so the two-degree inclination is a range-wide acoustic decision rather than a styling feature specific to one model.
The base also hides Triangle’s downward-firing laminar bass-reflex port. Its wide, flat shape is designed to keep airflow smooth and reduce audible port noise.
This allows the Solstice 3 to extend down to 48Hz, while the larger Solstice 8 reaches 38Hz. The downward-firing arrangement also makes placement near a rear wall less troublesome than with a conventional rear-facing port.
A New Magnesium Horn Tweeter
At the top of both speakers sits Triangle’s new TZ2540MG tweeter.
It uses a 25mm aluminium-magnesium dome mounted inside a compact horn. Magnesium adds damping while retaining the stiffness required for clean high-frequency reproduction, helping to move unwanted resonances beyond the audible range.
Triangle has long been associated with horn-loaded tweeters, but the Solstice implementation borrows ideas from significantly more expensive models in the company’s catalogue.
The tweeter is partnered with Triangle’s O.S.-S.E.W. waveguide — an Oblate Spheroid Super Elliptical Waveguide — with a barrel-shaped mouth and a single-piece phase plug.
In practical terms, the aim is wider and more consistent high-frequency dispersion rather than forcing the listener into an extremely narrow sweet spot. Behind the dome, a neodymium ring magnet and rear absorption chamber help control back-wave energy and reduce distortion.
Solstice 3 vs Solstice 8
This is where the two models begin to separate.
The Solstice 3 is a two-way design. Its single 16cm natural-cellulose driver handles both midrange and bass, crossing over to the tweeter at 2.8kHz.
The larger Solstice 8 is a three-way speaker. It uses one dedicated 16cm cellulose midrange driver together with two additional 16cm concave paper-cone woofers handling the bass.
That gives the floorstander considerably more radiating area and greater low-frequency scale.
Both models use newly developed die-cast aluminium driver baskets designed to maximise airflow behind the cones and minimise unwanted resonance. Triangle has also revised the way the cones are attached to increase the effective radiating surface area.
Crossover Design
The Solstice 3 crosses from its midwoofer to the tweeter at 2.8kHz, lower than the older Comète’s 3.5kHz crossover point.
That allows the larger driver to hand over to the tweeter before its dispersion begins to narrow significantly, helping the two drivers integrate more coherently through the crossover region.
The three-way Solstice 8 uses crossover points at 250Hz and 3.7kHz.
Triangle uses components including air-core inductors and film capacitors, while both models retain a single pair of rear speaker terminals finished in champagne gold.
The Solstice 3 S05 Stand
Triangle has also produced a dedicated stand for the Solstice 3 called the S05.
Rather than simply placing the speaker on a generic top plate, the Solstice 3 base fits directly onto the stand. The aluminium column and heavy glass base provide the rigid support a standmount speaker of this size needs.
The S05 stands are priced at £279 per pair.
They are not essential, but they make sense if you want the speaker operating at the intended listening height with maximum stability.
Amplifier Matching
One of the attractive things about the Solstice 3 is that it is relatively easy to drive.
Sensitivity is rated at 90dB, with an 8-ohm nominal impedance and a minimum impedance of 5.3 ohms. That makes it a considerably more amplifier-friendly load than some compact loudspeakers.
The Solstice 8 increases sensitivity to 91dB, although its minimum impedance falls to 3.6 ohms. That means the larger floorstander benefits more from an amplifier capable of providing solid current delivery, particularly when controlling its twin bass drivers.
Neither speaker necessarily requires enormous amplifier power. What matters more is tonal matching.
The revealing horn tweeter means aggressively bright electronics are unlikely to be the most natural partner. Warmer or neutral amplification tends to make more sense, allowing the cellulose drivers to retain their natural midrange character without making the treble overly prominent.
How Do the Triangle Solstice Speakers Sound?
The overall presentation combines the qualities Triangle is known for with noticeably improved refinement.
Vocals have a particularly natural character through the cellulose drivers, while the horn tweeter gives the presentation plenty of openness and energy.
Bass is quick rather than artificially heavy, with the downward-firing laminar port helping the speakers maintain control while still producing convincing extension.
The Solstice 8 unsurprisingly adds considerably more scale and low-frequency authority, making it the stronger choice for larger rooms.
The Solstice 3 offers much of the same character in a considerably smaller enclosure and is particularly attractive where space is limited.
Stereo or Home Cinema
Triangle has also designed the range with home cinema in mind.
Both models can be combined with the matching Solstice C3 centre speaker, which uses the same magnesium horn tweeter alongside a pair of 16cm cellulose drivers in a sealed enclosure.
That means a system can begin as a conventional stereo setup and later expand into a tonally matched multichannel installation.
Triangle Solstice 3 & Solstice 8: Our Verdict
The interesting thing about the Solstice range is not any single headline specification. It is how many relatively serious engineering ideas Triangle has combined at these prices.
You get a newly developed magnesium horn tweeter, DVAS cabinet vibration control, a substantial cast-iron and silicone base, acoustic alignment through the two-degree cabinet angle and a cleverly integrated downward-firing port.
The Solstice 3 is the more compact and accessible option, and at £999 per pair it offers a lot of engineering for a standmount speaker.
The Solstice 8, at £1,999 per pair, takes the same concept and adds the scale, bass extension and room-filling capability expected from a proper three-way floorstander.
For anyone who enjoys Triangle’s energetic presentation but wants something more refined than the company’s previous generation, both deserve an audition.
