Active bass-reflex subwoofer with laminar ventilation.
Woofer: 25 cm | Class D amplifier: 250W RMS / 400W peak
Frequency response: 25 Hz - 120 Hz
Adjustments: volume, crossover (30-120 Hz), phase (0° / 180°)
Remote control + front LED display
Inputs: LFE, stereo RCA, high level loudspeaker
Outputs: speaker (pair)
If you make the payment via bank transfer, you will receive an extra 3% discount on your order.
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The Triangle THETIS 340 is more than just a subwoofer — it’s the key component to completing your sound system, whether you’re building a high-fidelity stereo setup or a multichannel home cinema. Equipped with a powerful 25 cm driver and a Class D amplifier delivering up to 250 W RMS (and 400 W peak), the THETIS 340 is a true engine of emotion. Compact, versatile, and highly musical, this subwoofer delivers impressive low-end depth without compromising space or aesthetics.
Performance-Optimized Design
The THETIS 340 features a bass-reflex design with a laminar port, allowing for extended, dynamic, and precise bass reproduction. This design eliminates the airflow noise commonly found in less refined systems.
Its robust yet compact construction (only 34 cm per side) lets it blend effortlessly into any room, offering disproportionately powerful performance for its size.
Powerful Technology and Precise Control
Class D Amplifier – 250 W RMS / 400 W peak: More than enough power to add impact to any cinematic scene or music track with deep, extended bass.
Frequency range: 25 Hz – 120 Hz: Deep, defined lows that complement your main speakers without overwhelming the mix.
Comprehensive controls: Adjustable crossover frequency (30–120 Hz), phase selector (0° / 180°), and volume control, all accessible via the rear panel or included remote control.
A discreet front LED display shows current settings, making it easy to adjust in dark or minimalist spaces.
Maximum Compatibility with Any System
Thanks to a wide range of input options, the THETIS 340 integrates seamlessly into all kinds of setups:
LFE input: Perfect for AV receivers with dedicated bass management.
Stereo RCA inputs: Ideal for traditional Hi-Fi systems.
High-level speaker inputs: Designed for amps without dedicated subwoofer outputs.
It also features speaker outputs, making it even easier to incorporate into more complex or upgraded systems.
A Subwoofer for Every Scenario
From action-packed movie scenes to subtle jazz on vinyl, the THETIS 340 adapts effortlessly, always delivering the necessary low-frequency support with depth, control, and realism.
This subwoofer doesn’t just complete your system — it transforms your listening experience into something far more immersive, both physically and emotionally.
Type: Bass reflex with laminar port
Driver: 1 x 25 cm (10")
Frequency response (±3 dB): 25 Hz – 120 Hz
Power: 250 W RMS / 400 W peak – Class D
Inputs:
LFE
Stereo RCA (L/R)
High-level speaker input
Outputs:
Speaker output (pair)
Controls:
Crossover frequency: 30 – 120 Hz
Phase: 0° / 180°
Volume: Rotary dial / IR remote
Power supply: 100–240V / 50–60 Hz
Dimensions (W x H x D): 340 × 340 × 380 mm
Weight: 16.1 kg
With the Triangle THETIS 340, every bass note becomes a tangible experience, completing your system with authority and elegance.
