The THETIS 380 subwoofer is Triangle’s most powerful model. Triangle paid particular attention to the depth
and punch in order to meet the requirements of the most demanding dedicated listeners.

The engineering team developed a new 12-inch (30cm) driver to make the listener feel the full intensity of the low frequencies from a film or a music track.


A new enclosure has been designed using laser sensors to measure the cabinet distortions in order to avoid unwanted vibrations and sound coloration.

The development went further than just the drivers. The class-D amplifier has been designed from the ground up and now offers an output of 350 watts RMS (500 W peak) ensuring a large energy reserve.


The THETIS subwoofers are versatile and feature various inputs and extensive settings.

They include an LFE input enabling parameters to be set directly from the home theatre amplifier, and standard RCA inputs for hi-fi amplifiers. They also feature high-level inputs to connect amplifiers that have no subwoofer output.

Triangle THETIS 380 Subwoofer

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