If you're looking for powerful and impactful bass for your home theater or music system, then the TRIANGLE Thetis 340 subwoofer is the perfect solution. With its impressive design and cutting-edge technology, this subwoofer is designed to deliver deep, clear, and precise bass that will take your listening experience to the next level.

At the heart of the Thetis 340 is a high-performance 250mm (9.84") driver that's capable of delivering bass down to 25Hz, which means you'll hear and feel every note in your music and every explosion in your movies. The driver is also made from a special type of paper that's lightweight yet rigid, which allows it to move quickly and accurately, resulting in faster and more precise bass response.

In addition to its impressive driver, the Thetis 340 also features an advanced amplifier that's capable of delivering up to 250W of power, ensuring that the subwoofer can handle even the most demanding music and movie soundtracks. With its advanced technology, impressive performance, and sleek design, the Triangle Thetis 340 subwoofer is the perfect addition to any home theater or music system.

FEATURES:

High-performance 250mm (9.84") driver
250W Class-D amplifier
Advanced DSP processing
Multiple connection options
Durable construction with a scratch-resistant lacquered finish
Low-frequency extension down to 25Hz for deep, impactful bass

SPECIFICATIONS:

Type:	Bass-Reflex
Woofer Size:	10" (254 mm)
Phase Control:	0–180° (2 positions)
Bandwidth (±3 dB):	25 Hz – 120 Hz
Power Handling (Watts RMS):	250 W – Class D Amplifier
Main Input:	100–240 V / 50–60 Hz
Inputs:	LFE – Line IN (L/R) – Speaker IN
Outputs:	Speaker OUT
Display:	Front panel volume display
Volume Control:	Rotating knob and IR remote
Crossover Cut-Off Frequency:	Rotating knob 30–120 Hz
Auto On / Standby:	ON/OFF switch
Dimensions (H × W × D):	13.4" × 13.4" × 15.1" (340 × 340 × 384 mm)
Net Weight:	35.5 lbs (16.1 kg)

DOWNLOADS:

Triangle - Thetis 340 - Technical Specifications (PDF)

Triangle - Thetis 340 - Owner's Manual (PDF)

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Triangle - Thetis 340 - Hi-Fi Subwoofer (Single)

LIMITED STOCK: Black Ash finish may have limited stock available. Gloss White finish is currently unavailable until February 2026. For more information, please send us a message. Or, call 877-370-1972. Thank you.