| Retail price | Estimated $799 |
| Acquired from | Us :) |
| Condition | Brand new, hand made pre-production prototype |
| Break-in | Standard 20 to 500 Hz band-limited pink noise until T/S stabilized, then fully cooled; testing performed after cool-down |
| Intake checks | Visual inspection passed; small-signal T/S check passed; functional sweep clean |
| Test date | November 2025 |
| Notes |
This is just a pre-production prototype. Since this is not a production unit, I will not be doing a full write up, but will at least show the scores and the images. The full write ups will be done for production units when they are tested. |
Overall summary
This is just a pre-production prototype. Since this is not a production unit, I will not be doing a full write up, but will at least show the scores and the images. The full write ups will be done for production units when they are tested.
We set out to create the very best line of subwoofers for when the requirements are: Small sealed enclosure with ultra low and authoritative frequency extension, extremely low distortion, all with a relatively shallow mounting depth. To summarize the end results, we are smashing that goal based on the data from the prototypes.
CLICK HERE for more info on the ResoNix GUS Subwoofers.
Overall performance snapshot
This is our subjective interpretation of the objective data. How we derive these scores can be found on the home page of the testing section.
High level broadband distortion
225 / 250
Distortion shape stability
80 / 90
High level excursion weighted distortion
221 / 300
1v baseline broadband distortion
30 / 40
BL window width & flatness
122 / 130
BL symmetry
60 / 70
Cms window width & flatness
79 / 90
Cms symmetry
41 / 50
Le(x) level & flatness
84 / 90
Le(i) stability
36 / 40
Qts(x) stability
90 / 100
Total performance snapshot rating
1068 / 1250
Marketing materials accuracy to our measurements
100 / 100
Not applicable, but I think it goes without saying.
100.5 dB – takes 900 watts in a 0.77 ft³ enclosure to reach the 20.7 mm 70 percent BL xmax at 20 Hz.
100.5 dB – takes 1000 watts in a 0.7 ft³ enclosure to reach the 20.7 mm 70 percent BL xmax at 20 Hz.
Distortion & frequency response - TRF measurements
Motor & suspension linearity - LSI measurements
Bl(x)
Bl(x) window and shape
Bl(x) symmetry
Cms(x)
Cms(x) window and shape
Cms(x) symmetry
Inductance - Le(x) and Le(i)
Level and shape
Current dependence
Qts(x)
Qts stability
Enclosure alignment calculations
Sealed volume required for 0.707 QTC on this sample: 0.75 cubic feet
T/S parameters
| Re | 1.705 Ω (parallel), 6.82 Ω (series) |
| Le | 0.4925 mH (parallel), 1.97 mH (series) |
| Fs | 14.54 Hz |
| Qts | 0.28 |
| Qes | 0.28 |
| Qms | 9.08 |
| BL | 13.634 N/A (parallel), 27.268 N/A (series) |
| Mms | 339.842 g |
| Cms | 0.35 mm/N |
| Sd | 490.87 cm2 |
| Vas | 119.3473 l |
| Sensitivity 1 watt/1 meter SPL | 83dB |
| Xmax (one way) | 20 mm |
| Xmech (one way) | 23 mm |
| Re | 1.725 Ω (parallel), 6.90 Ω (series) |
| Le | 0.465 mH (parallel), 1.86 mH (series) |
| Fs | 19.50 Hz |
| Qts | 0.370 |
| Qes | 0.380 |
| Qms | 13.65 |
| BL | 13.634 N/A (parallel), 27.268 N/A (series) |
| Mms | 339.842 g |
| Cms | 0.20 mm/N |
| Sd | 490.87 cm2 |
| Vas | 68.1162 l |
| Xmax @ BL 70% | 20.69 mm |
| Xmax @ Cms 50% | >20.89 mm |
| Xmax @ Le 17% | >20.89 mm |
| Re | 1.705 Ω (parallel), 6.82 Ω (series) |
| Le | 0.4925 mH (parallel), 1.97 mH (series) |
| Fs | 14.54 Hz |
| Qts | 0.28 |
| Qes | 0.28 |
| Qms | 9.08 |
| BL | 13.634 N/A (parallel), 27.268 N/A (series) |
| Mms | 339.842 |
| Cms | 0.35 mm/N |
| Sd | 490.87 cm2 |
| Vas | 119.3473 l |
| Xmax @ BL 70% | 20.69mm |
| Xmax @ Cms 50% | >20.89mm - Not reached within our ±20.89 mm evaluation window on this sample |
| Xmax @ Le 17% | >20.89mm - Not reached within our ±20.89 mm evaluation window on this sample |