Triangle's Borea BR05 Puts an 8-Inch Paper Cone in a $999-a-Pair Standmount

Triangle has expanded its Borea range with the BR05, a two-way standmount built around a 21cm (8-inch) paper-cone midwoofer, announced on 19 October 2026 and listed as available to order through authorised retailers. The French manufacturer has priced it at $999 per pair, with official regional pricing of £729 (about $970) and €749 (about $840) per pair. Matching S03 stands, finished in black or white, are $299 per pair (£225, about $300; €249, about $280).

At 490mm tall, 300mm wide and 345mm deep, and weighing 14.6kg each, the BR05 is a large standmount rather than anything that will perch on a shelf. Triangle's own recommended room size spans 15 to 45 square metres (160 to 485 square feet), which gives a sense of the scale it is pitched at.

A big paper cone and a horn-loaded silk dome

The headline driver is the 21cm midwoofer, which uses a natural cellulose pulp cone — paper, in other words, a material Triangle has long favoured for its low mass and self-damping behaviour. According to ecoustics, it is driven by a 120mm ferrite magnet and a 40mm voice coil, a fairly traditional motor arrangement for a cone of this size.

Above it sits a 25mm silk dome tweeter from Triangle's EFS (Efficient Flow System) family, fitted with a phase plug and mounted in a shallow horn, with a neodymium motor system. The shallow horn loading is a recurring Triangle signature and contributes to the relatively high sensitivity quoted for the speaker.

The two drivers meet at 1.7kHz through a second-order, 12dB-per-octave crossover. Triangle specifies air-core inductors, polyester film capacitors and oxygen-free copper internal wiring, and the binding posts are arranged for bi-wiring or bi-amping.

Cabinet, ports and the built-in tilt

The enclosure uses high-density MDF panels of up to 21mm thickness with two internal braces. Triangle also applies its DVAS (Driver Vibration Absorption System), which places a high-density EVA foam gasket between the driver motor and the internal bracing — the intention being to stop driver-borne vibration from exciting the cabinet walls.

Bass loading comes from two front-firing reflex ports. Front porting is a practical choice as much as an acoustic one: it loosens the usual requirement for substantial clearance behind the speaker, which matters for a cabinet of this depth carrying a woofer of this diameter.

One of the more distinctive touches is the supplied base, which tilts the speaker back by 8 degrees. The optional S03 stands maintain the same 8-degree angle, so the geometry is consistent whether the BR05 sits on its own base or on the matching stands. Removable magnetic grilles complete the package, leaving the baffle free of visible fixings when they are off.

The numbers Triangle quotes

Manufacturer specifications, as reported by both StereoNET and ecoustics, line up as follows:

• Frequency response: 42Hz – 22kHz (±3dB)
• Sensitivity: 90dB (quoted by ecoustics as 90dB/W/m)
• Power handling: 120W RMS
• Impedance: 8 ohms nominal, 4.7 ohms minimum (ecoustics)
• Crossover: 1.7kHz, second order
• Dimensions: 490 × 300 × 345mm (H×W×D)
• Weight: 14.6kg per speaker
• Recommended room: 15–45 m² (160–485 sq ft)

A 90dB sensitivity figure paired with an 8-ohm nominal load and a 4.7-ohm minimum is, on paper, an undemanding combination — though these are manufacturer figures, and no measurements or listening impressions have been published.

Five finishes and a two-tone look

The BR05 comes in Light Oak, Black Ash, Chestnut, Green and Frosted White. All five use Triangle's two-tone treatment: a wood-effect cabinet paired with a contrasting front baffle and driver surrounds that match the baffle. The combination of a visibly large paper cone, a contrasting baffle and a tilted plinth is where the "retro" framing in the initial coverage comes from — StereoNET's piece leans on exactly that angle, and the look is clearly deliberate rather than incidental.

Where it sits in the Borea line

StereoNET notes that the BR05 follows the Borea BR04, which arrived in 2025, and that the range also includes the BR03 standmount and the BR08 floorstander. Triangle has not published a ship date, and the only availability language given is that the speaker can be ordered through authorised retailers; ecoustics points readers to Triangle's US site.

What is notable about the BR05 within the current market is simply the driver size. An 8-inch woofer in a two-way standmount has become uncommon at any price, let alone at this one, and it brings a specific set of engineering consequences — a large radiating area and high sensitivity on one hand, a 1.7kHz crossover point for a cone of that diameter on the other. How those trade-offs resolve in practice will only be answerable once the speaker has been heard and measured, and neither has happened yet.

For anyone weighing the physical realities: at 14.6kg per cabinet and nearly half a metre tall, the BR05 needs proper support and floor space, which is presumably why Triangle supplies the tilting base in the box and offers the S03 stands to preserve the same angle.

US dollar figures for the UK and European prices are converted at the ECB reference rate of 19 October 2026 and are approximate; the $999 and $299 figures are Triangle's own US prices.

Frequently asked questions

How much does the Triangle Borea BR05 cost?

The Triangle Borea BR05 is priced at $999 per pair in the United States. UK and European pricing works out at roughly $970 and $840 per pair respectively at ECB reference rates for 19 October 2026. The matching Triangle S03 stands are $299 per pair, offered in black or white.

What drivers does the Triangle Borea BR05 use?

The Triangle Borea BR05 is a two-way design using a 21cm (8-inch) midwoofer with a natural cellulose pulp cone, a 120mm ferrite magnet and a 40mm voice coil, plus a 25mm silk dome EFS tweeter with a phase plug, neodymium motor and shallow horn loading. They cross over at 1.7kHz.

What are the Triangle Borea BR05's specifications?

Triangle quotes a frequency response of 42Hz to 22kHz (±3dB), sensitivity of 90dB, power handling of 120W RMS and an 8-ohm nominal impedance with a 4.7-ohm minimum. Each Borea BR05 cabinet measures 490 x 300 x 345mm and weighs 14.6kg, with a recommended room size of 15 to 45 square metres.

What finishes is the Triangle Borea BR05 available in?

The Triangle Borea BR05 comes in five finishes: Light Oak, Black Ash, Chestnut, Green and Frosted White. All use a two-tone treatment combining a wood-effect cabinet with a contrasting front baffle and matching driver surrounds. Removable magnetic grilles are supplied, and the optional S03 stands come in black or white.

Does the Triangle Borea BR05 need stands?

The Triangle Borea BR05 ships with a base that tilts the speaker back by 8 degrees. Triangle also offers optional S03 stands at $299 per pair, which maintain the same 8-degree angle. At 490mm tall and 14.6kg per cabinet, the BR05 is a large standmount rather than a shelf-friendly design.

This article was written by an AI system from Into The HiFi AI Desk, generated from the following sources, with no human editing pass before publication: StereoNET — Triangle Borea BR05 Goes Big on Retro Appeal, ecoustics — Triangle Borea BR05 Brings Back Big Woofer Bookshelf Speakers With Retro Style, av2d — Triangle Borea BR05 standmount luidspreker met 21 cm driver.