Basus

The Ultimate Subwoofer System

Precision Bass, Redefined
Experience the foundation of music like never before. With cutting-edge motional feedback technology, a 1kW power amplifier, and a precision-engineered sealed enclosure, the Basus redefines low-frequency performance.

Weight

- 130kg

Dimensions

- 450x450x800mm

Power Amplifier

- 1000W

Power requirement

- 115/230V 50/60Hz

Frequency responce

- 20-250Hz

Input impedance

- 47kOhm

Motional Feedback Technology: Real-time correction ensures distortion-free bass, even at extreme volumes.
1kW Power Amplifier: Effortlessly drives the Basus to deliver room-filling, thunderous bass.
Sealed Metal Enclosure: Eliminates resonance for clean, articulate low-end performance.
Active Crossover System: Switch-selectable presets for seamless integration with any speaker or amplifier.
Universal Compatibility: Perfectly pairs with the Thrax Lyra or any high-end audio system.

Need for Better Bass

In music, three core elements form the foundation: rhythm, harmony, and melody. Bass underpins two of these—rhythm and harmony. Studies show that humans are highly sensitive to low-frequency beats, detecting timing errors more accurately in bass than in mid or high frequencies. Bass isn’t just a rumbling noise; it’s the backbone of music. It defines the harmonic structure, shapes emotional tones (sad, bright, or mellow).

The Role of Bass in Music

Sustained Bass: Proper phase alignment creates accurate waveforms, allowing listeners to identify instruments and their textures.
Percussive Bass: Provides the beat and timing. Even slight delays can make music feel offbeat and less impactful.

Precision Timing: Ultra-low group delay ensures percussive bass notes are rendered with stunning clarity and impact.
Sustained Depth: Continuous bass tones are reproduced with texture and richness, revealing the true character of every instrument.
Sealed Enclosure Advantage: Unlike ported designs, the Basus minimizes time distortion, delivering tight, controlled bass free from coloration.

The Basus is as beautiful as it is powerful. Housed in a robust, all-metal enclosure, it’s built to withstand the demands of high-performance audio. Available in black or silver anodized aluminum, the Basus complements the Thrax Lyra and enhances any listening space with its understated elegance.

The Basus isn’t just a subwoofer—it’s a gateway to a new level of musical immersion. Whether you’re listening to the subtle pluck of a double bass or the explosive impact of a cinematic soundtrack, the Basus brings every note to life with unmatched clarity and power.

Speaker Design and Bass Performance
Small ported speakers and home cinema subwoofers often suffer from high group delay, resulting in "murky bass." Large ported enclosures perform better but still struggle at very low frequencies. Sealed enclosures, especially large ones, offer the best performance with minimal group delay. However, sealed systems are less efficient. For every 3dB increase in efficiency, the enclosure size must double.

Here’s the theoretical maximum efficiency for sealed box speakers (SPL per watt at 30Hz):

2 cu ft = 84dB
4 cu ft = 87dB
8 cu ft = 90dB
16 cu ft = 93dB
32 cu ft = 96dB

Conclusion: Deep, powerful bass requires large speakers and significant power.

Cabinet Resonance and Distortion
Speaker enclosures act as resonators, much like drums or organ pipes. A pulse at the opening can trigger unwanted "echoes" from the enclosure itself. Containing this re-radiated energy is a major challenge that is well addressed by Basus.

Harmonic distortion in bass is so common that 5-10% of listeners might miss it if absent. Many systems (e.g., Bose Acoustimass, laptops, TVs) reproduce harmonic structures without accurately rendering the bass note itself by fooling your brain.

Bass Modulation and Its Effects
Bass modulates higher frequencies, shaping the character of music. For example, a low-frequency tone can subtly alter the timbre of a singer’s voice. This modulation is a core principle of music creation, accentuating beats and coloring tones.

However, when bass modulation is unrelated to the music, it becomes noise. The signal-to-noise ratio (SNR) defines a speaker’s ability to minimize such artifacts. Feedback systems, widely used in amplifiers, could improve speaker performance but are rarely applied due to complexity and limited commercial appeal.

Feedback Systems and Speaker Control
Speaker drivers are essentially linear electric motors. When a signal stops, residual kinetic energy and electromagnetic forces (EMF) can cause unwanted cone movement, akin to a drum continuing to vibrate after being struck.

A feedback system measuring cone acceleration and velocity could stabilize the driver, reducing resonance and improving performance within a limited frequency range. While perfection is unattainable, such systems can enhance performance by over 10x in specific bands.

Power and Efficiency
Handling 1kW of power and mechanical stress requires robust, all-metal enclosures. At resonance, a bass driver’s impedance can spike, reducing power delivery. For example, a 100W amplifier might deliver only 10W to the driver at resonance but waste hundreds of watts at higher frequencies.

The Basus Solution
Our research builds on principles developed by Nivox, widely used in their studio monitors. Unlike past efforts focused on making small boxes sound large, we’ve scaled and optimized the concept with custom drivers, electronics, and durable enclosures.

The Basus system integrates seamlessly with existing setups, allowing users to pair a 20W SET amp for mid/highs with thunderous bass. It’s not just good—it’s exceptional.