Triangle Solstice 3 is a 2-way Passive Bass Reflex Bookshelf speaker by Triangle. It was released in June 2026. It features a 1" Horn-Loaded Tweeter and 1 x 6.5" Natural cellulose pulp Woofer.
The Solstice 3 succeeds the Comete, the stand-mount Triangle has built since the 1980s. A 25 mm magnesium-alloy tweeter in a barrel-shaped horn with a new phase plug sits above a single 16 cm natural cellulose pulp midwoofer, crossed at 2800 Hz. The bass-reflex vent is a laminar slot hidden in the plinth rather than a port on a baffle, and the cabinet carries Triangle's DVAS bracing, which contacts the rear of the driver through damping material. Minimum impedance is 5.3 ohms, an easier load than the Comete Ez it replaces.
The speaker has a frequency range of 48-22k Hz and a sensitivity of 90 dB. Triangle Solstice 3 has an MSRP of 1349$ per pair.
Room Size Suitability
The size of the room where you plan to use the Triangle Solstice 3 is a crucial factor in your decision. We have assessed its suitability for various room sizes based on its dimensions and maximum power output:
| Listening Environment* |
Suitability |
| Near-field | Average |
| Small Room | Good |
| Mid-size Room | Average |
| Large Room | Poor |
| Very Large Room | Bad |
(* Approximate Room sizes: Small < 100sq. ft / 9 m2, Mid-size: 100-220 sq. ft / 9-20 m2, Large 220-400 sq. ft / 20-36 m2, Very Large: > 400 sq. ft / 36 m2.
Average Floor Height: 9" / 2.7m. Typical room sizes differ from country to country, and the actual listening experience changes depending on floor height, room shape, surface materials, listening position, speaker locations, etc.)
Triangle replaced the older Comete Ez with this model. Follow the link to read our detailed comparison of these models:
Compare Triangle Solstice 3 vs Triangle Esprit Comete Ez
Triangle's Solstice Series of Loudspeakers
Solstice 3 is a member of Triangle's Solstice series of Passive speakers. Below you can see the main specs of these speakers.
Triangle Solstice Series Speakers
Frequency Response of the Triangle Solstice 3 Speaker
Triangle Solstice 3 has a Frequency response range of 48-22k Hz at ±3dB and Power Range of 25-130 watts. With a minimum frequency of 48 Hz, Solstice 3 delivers moderate bass depth so depending on your use case, you might want to consider adding a subwoofer to your system.
Here we have a comparison of how Solstice 3's Low frequency value compares with the average, max and min Low frequency values in its class.
Low Frequency
Bookshelf Speakers
Thinking about a subwoofer for the Triangle Solstice 3?
Crossover frequency of the Triangle Solstice 3?
The crossover frequency of the Solstice 3 is set to 2800Hz. This is the threshold frequency where the higher frequency signals over this level are sent to the tweeter and the lower-frequency signals are sent to the woofer by the crossover component.
Impedance and Sensitivity
Triangle Solstice 3's nominal impedance level is
8 ohms but can go down to as low as
5.3 ohms, and has a sensitivity of
90 dB.
Sensitivity
Bookshelf Speakers
8 Ohms is pretty much the standard nominal impedance amongst stereo speakers and amplifiers so Triangle Solstice 3 is not considered a difficult to drive speaker from nominal Impedance perspective.
Sensitivity
90dB of the Triangle Solstice 3 is an average sensitivity for stereo speaker so it is neither easy nor difficult to drive Sensitivity wise. Work out how loud the Triangle Solstice 3 plays in your room →
Minimum Impedance of the Triangle Solstice 3
Even though the nominal impedance of the Solstice 3 is 8 ohms, the minimum impedance level of this speaker according to Triangle is 5.3 ohms Triangle Solstice 3 so while choosing an amplifier, you should ideally check if the unit you are considering can provide this impedance level.
What amplifier does the Triangle Solstice 3 need?
At normal listening levels in a medium room, about
7.5–90 W
per channel into 8 ohms.
Set your own conditions and we will rank every amplifier we cover.
Prefer to browse? Integrated amplifiers under $1,500, or every amplifier we cover.
Input Type
Solstice 3 features type connectors.
Triangle Solstice 3 External Dimensions and Weight
Triangle Solstice 3 has external dimensions of (Height x Width x Depth) 16-7/16 x 8-11/16 x 14-9/16inch (418.0 x 221.0 x 370.0mm ).
Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base area of Triangle Solstice 3 is approximately 817.7cm2 / 126.7inch2.
Find speakers that fit your shelf or alcove → · Work out where they should sit in the room →
WeightThe Triangle Solstice 3 weighs 12.90kg / 28.4lbs per piece. Here is a comparison of how Solstice 3's weight compares with the average, max and min weights in its class.
Weight
All Bookshelf Speakers
Weight
Bookshelf Speakers under $1500
Cabinet type and Materials
Triangle Solstice 3 has a
Bass Reflex type cabinet. Bass Reflex type loudspeakers (aka Ported, Vented or Reflex Port) have enclosures that uses a port, hole or vent cut into the cabinet. Ported designs are generally more efficient than the Sealed designs.
Port Position
Triangle Solstice 3 is a front-firing port speaker, which gives you more flexibility compared to rear firing speakers when you need to place it close against a wall or other surfaces.
Available colors
Triangle Solstice 3 is available in Teak, Birch, Black Ash and White.
Wall Mounting
Solstice 3 doesn't sport any built-in mounting bracket, so you need an external structure to mount it on walls.
Does the Triangle Solstice 3 come with a Grille?
Solstice 3 comes with grilles. The purpose of the grille is to protect the delicate driver elements from external impacts while still allowing the sound to pass as clearly as possible.
Recommended Accessories
Here is a list of accessories that we think you may need for the Triangle Solstice 3.
- Speaker Cable and Connectors
- Vibration Isolators: IsoAcoustics isolators are our favorite isolators but you may find more affordable options too.
- Acoustic Panels and Treatments: Your room is as important as your stereo equipment so acoustic treatments goes a long way in improving the overall performance.
- Speaker Stands: Stands bring your bookshelf speakers to ideal height (rule of thumb is to have the tweeter level with your ear in your listening position), helps stability and acoustical isolation.
Official Product Page
Official manufacturer's product page for the Triangle Solstice 3 speaker can be found below:
Official Product Page for Triangle Solstice 3
Warranty
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.