A pair of floorstanding speakers capable of replacing a traditional hi-fi system: all the electronics fit into just one of the two speakers, which accommodates a turntable, television, or smartphone via Bluetooth. Triangle, a French manufacturer based in Soissons, offers here an all-in-one system calibrated for rooms from 15 to 40 m², with built-in 2 x 80 watts RMS Class D amplification.
A stereo system in two towers
The pair operates on the principle of a main speaker and a secondary speaker. The main one, about one kilogram heavier (14.4 kg versus 13.4 kg), houses the Class D amplification and all the connectors on the rear panel. The signal is sent to the second via a supplied 5-meter speaker cable, which the user can replace with a standard shorter or longer cable depending on the room layout. No external amplifier is required: the system comes down to the two towers and the chosen source.
Three drivers per tower
Each tower integrates three drivers in a 2.5-way configuration. The 25 mm silk dome tweeter handles the treble, while the two 13 cm paper-cone drivers share the midrange and bass. This arrangement delivers a stated frequency response of 47 Hz to 22 kHz at ± 3 dB, reaching reasonably low for speakers of this size (92 cm high, 16.5 cm wide), without making the addition of a subwoofer essential in most cases. For those wishing to reinforce the very low bass, a dedicated output allows the addition of a subwoofer.
Wired inputs and subwoofer output
The main speaker brings together analog and digital inputs to cover most current sources. The built-in, defeatable MM phono preamplifier allows the direct connection of a moving-magnet cartridge turntable, without using a separate preamp. The RCA input doubles this use: when the phono preamp is disabled, it accepts a line-level signal (network player, CD player, computer audio output). A 3.5 mm mini-jack socket is also included for portable sources. On the digital side, the optical and coaxial inputs accept a television, console, or network player equipped with an SPDIF output. The dedicated subwoofer output completes the set.
Wireless streaming via Bluetooth aptX
The Bluetooth 4.0 receiver supports aptX, AAC, and SBC codecs, covering the main audio profiles of current smartphones, tablets, and laptops. The aptX codec, the best of the three on paper, uses 16-bit sampling at 48 kHz provided the source transmits it: most Android smartphones offer it, while iPhones use AAC. The range and stability of the connection remain those of a standard Bluetooth norm, around ten meters indoors without obstacles. No Wi-Fi connection or multi-room protocol is provided in this range: for network streaming, a dedicated player must be connected to one of the wired inputs.
Listening rooms and placement
Triangle recommends this pair for rooms with a surface area of 15 to 40 m². For a smaller space, the LN01A model from the same Active Series, which is more compact, is better suited. The tower format, 92 cm high and 16.5 cm wide, fits against a wall or on either side of a television. Triangle recommends placement slightly away from the rear wall to preserve bass breathing room, and angling the towers toward the listening position to maintain stereo coherence.
Finishes and included accessories
The range comes in three wood finishes: light oak, chestnut, and ashy black. The protective acoustic fabric is magnetic and can be removed in one motion for those who prefer to leave the drivers visible. The box contains the two towers, an infrared remote control that selects sources, adjusts the volume, and sets the bass and treble, the 5 m speaker cable, the bases to be screwed under each speaker, as well as the rubber pads and metal spikes that adapt floor coupling according to the nature of the surface (wood floor, tile, carpet).
Technical specifications
Type and configuration
All-in-one stereo active floorstanding speakers
Designed for rooms from 15 to 40 m²
Connection between main and secondary speaker via speaker cable
Amplification
Built-in Class D amplification
Power: 2 x 80 W RMS
Drivers
3-driver configuration per speaker
25 mm silk dome tweeter
13 cm midrange driver
13 cm woofer
Acoustic performance
Frequency response: 47 Hz to 22 kHz (±3 dB)
Wireless connectivity
Bluetooth 4.0
Supported codecs: aptX, AAC, SBC
Inputs and outputs
Built-in MM phono input for turntable
Analog inputs: RCA, 3.5 mm mini-jack
Digital inputs: optical, coaxial
Dedicated subwoofer output
TV compatibility via optical connection
Included accessories
Infrared remote control
Dimensions and weight
Dimensions per speaker: 165 x 921 x 263 mm
Weight
Main speaker: 14.4 kg
Secondary speaker: 13.4 kg
Frequently Asked Questions
Do I need to buy a separate cable to connect the two speakers?
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No. A 5-meter speaker cable is included in the package and is sufficient in most setups. If the distance between the two columns is greater or if you prefer to use a cable with a larger cross-section, any standard speaker cable (Opéra type or equivalent) can replace it without any special handling.
Does the phono preamplifier accept all turntable cartridges?
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The built-in phono input is intended for moving magnet (MM) cartridges, which equip the majority of entry-level and mid-range turntables. A moving coil (MC) cartridge, with its lower signal output, will require an external MC phono preamplifier placed between the turntable and the speakers’ RCA input, with the internal preamp disabled.
How do you connect the LN05A to a TV?
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The simplest connection is via the optical input (Toslink) using a standard optical cable. This connection transmits digital sound from the TV to the main speaker and works with most recent TVs. The TV’s optical output generally carries stereo PCM and some Dolby Digital 2.0 tracks; multichannel tracks (5.1, Dolby Atmos) are downmixed to stereo by the TV before being sent to the pair.
Does the remote control allow you to control music playback via Bluetooth?
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The supplied infrared remote control controls the functions specific to the speaker: source selection, volume level, bass and treble settings. For playback controls (play, pause, next or previous track), you need to use your smartphone directly or the streaming app being used.
Can a subwoofer be added to this pair?
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Yes. A dedicated subwoofer output is located on the rear of the main speaker. It sends a line-level signal to an active subwoofer equipped with its own amplifier (the vast majority of subwoofers on the current market). The level and crossover frequency are then adjusted directly on the subwoofer. This extension is particularly useful in large rooms, for music rich in sub-bass, or for the reproduction of a home theater system.
What distance should be planned between the two columns?
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When listening to music, spacing the two tower speakers 2 to 3 meters apart, with the listening position placed at roughly the same distance as the speakers are from each other, provides a well-centered stereo soundstage. Triangle recommends angling the tower speakers slightly toward the listening position and keeping them about twenty centimeters away from the rear wall to preserve bass. The included 5-meter speaker cable accommodates even wider setups if the room requires it.
Is there a multi-room or Wi-Fi protocol on the LN05A?
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No. Wireless connectivity is limited to Bluetooth, supplemented by wired inputs (optical, coaxial, RCA, mini-jack). For Wi-Fi streaming, AirPlay, Chromecast, or a multiroom system, you need to add an external network player connected to one of the available analog or digital inputs.
Comment from December 03, 2025 — Experience from November 22, 2025
Automatically translated — Show original (French)
Esthétiques, performantes
A l image de la qualité Triangle
Livraison rapide et soignée
Eco-contribution included in the sale price.
GTIN / EAN: 3660216011022
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