Tesseract 18
The New Reference
Ultra low distortion, hi-fi subwoofer
The Tesseract 18 is not a refinement of existing subwoofer design — it is a complete rethinking of how low frequencies should be reproduced in a true Hi-Fi system. Built for uncompromising two-channel listening, it delivers clean bass that is fast, articulate, and transparent, allowing music to breathe with a natural sense of scale and foundation.
Every detail of the Tesseract 18 was engineered to eliminate distortion, resonance, and coloration. From the advanced motor topology to the multi-layered enclosure and custom vibration isolation, nothing was compromised — everything was re-invented for absolute clarity.
Application
High end 2 channel
Recommended Configuration
One, two, or more per space, distribed to counteract room modes.
Details
Proprietary 7-conductor locking connector with silver contacts
Custom umbilical with integrated multi-conductor audio and thermal data lines
Direct voice coil temperature monitoring for precise, real-time assurance
Underhung MASS motor topology for symmetry and control
Four-layer enclosure with advanced damping, mass loading, and zero-fastener construction
Single-point driver mounting with cabinet vibration isolation
Designed for 2-channel integration — sits gracefully on custom isolation feet, with optional stacking for dual-sub setups
Specifications
Performance
| Specification | Details | Notes |
|---|---|---|
| Impedance (per coil) | 3.80 ohm | DCR |
| Coil Configuration | Single voice coil | |
| Sensitivity | 96.0 dB | 2.83v/1m, 2π anechoic |
| Max SPL (Peak) | 137.6 dB | 1m, 2π, anechoic |
| Max SPL (Continuous) | 134.6 dB | 1m, 2π, anechoic |
| Frequency Response (-3dB) | 28.7Hz – 343Hz | No DSP |
| Frequency Response (-3dB) | 23.7Hz – 343Hz | With Linkwitz Transform |
| Low Frequency Extension (-3dB) | 23.70Hz | With Linkwitz Transform |
| Low Frequency Extension (-6dB) | 17.00Hz | With Linkwitz Transform |
| Low Frequency Extension (-10dB) | 9.70Hz | With Linkwitz Transform |
| Cone Breakup Frequency | 409Hz | |
| Xmax | 32 mm / 1.26 in | One way, 82% BL |
| Group Delay at f3 | 11.8 ms | With Linkwitz Transform |
| System Qtc | 0.6 | With Linkwitz Transform |
| Enclosure Alignment | Sealed | |
| Low Frequency Rolloff | 12dB/oct |
CTA 2010 data (preliminary)
| Amp Voltage (RMS) | 1m Peak | 2m Peak | 2m RMS | THD |
|---|---|---|---|---|
| 42v | 118.5 dB | 112.5 dB | 109.5 dB | 2.16% |
| 42v | 123.6 dB | 117.6 dB | 114.6 dB | 1.45% |
| 65v | 131.3 dB | 125.3 dB | 122.3 dB | 1.61% |
| 97v | 136.4 dB | 130.4 dB | 127.4 dB | 3.74% |
| 65v | 132.7 dB | 126.7 dB | 123.7 dB | 1.01% |
| 140v | 137.6 dB | 131.6 dB | 128.6 dB | 2.74% |
| 140v | 137.0 dB | 131.0 dB | 128.0 dB | 1.88% |
| 140v | 136.5 dB | 130.5 dB | 127.5 dB | 2.31% |
| 140v | 135.8 dB | 129.8 dB | 126.8 dB | 3.35% |
| 140v | 132.9 dB | 126.9 dB | 123.9 dB | 0.97% |
| 140v | 127.1 dB | 121.1 dB | 118.1 dB | 0.55% |
Design
| I/O | Proprietary 7 conductor locking connector with silver contacts |
|---|---|
| Cables (Included) | Custom umbilical with proprietary multi conductor audio cable plus thermal data cable |
| Customization Options | Custom color, configured for stacking (up to 3 per stack), custom umbilical length |
| Integrated Proprietary Technologies | Direct voice coil temperature measurement, underhung magic radio, Ti Tie, super special 6 layer enclosure with custom damping and mass loading, single point driver mounting, zero fastener enclosure, extensive driver vibration isolation |
| Patents | TBD |
| Mounting | Sits on ground on custom vibration isolation feet. Multiple units may be stacked with custom enclosure insert. |
| Warranty (Default / With Registration) | 3 years / 5 years |
| Dimensions (Metric) | 521.2 mm × 567 mm × 551.2 mm |
| Dimensions (Imperial) | 21.7 in × 22.3 in × 21.7 in |
| Shipping Dimensions (Crated, Imperial) | TBD |
| Weight (Net, Assembled) | 0 lbs |
| Weight (Gross, Shipping) | 0 lbs |
