| Retail price | Estimated $650 |
| 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
77 / 90
High level excursion weighted distortion
171 / 300
1v baseline broadband distortion
30 / 40
BL window width & flatness
115 / 130
BL symmetry
61 / 70
Cms window width & flatness
75 / 90
Cms symmetry
41 / 50
Le(x) level & flatness
85 / 90
Le(i) stability
38 / 40
Qts(x) stability
78 / 100
Total performance snapshot rating
996 / 1250
Marketing materials accuracy to our measurements
100 / 100
Not applicable, but I think it goes without saying.
96dB - takes 400 watts in a 0.65 cubic foot enclosure to hit the 17.1mm 70% BL xmax at 20Hz
96dB - takes 500 watts in a 0.5 cubic foot enclosure to hit the 17.1mm 70% BL xmax at 20Hz
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: 0.65
T/S parameters
| Re | 2.17 ohms (parallel) |
| Le | 0.49 mH |
| Fs | 16.91 Hz |
| Qts | 0.35 |
| Qes | 0.36 |
| Qms | 11.89 |
| BL | 13.276 N/A |
| Mms | 277.657 g |
| Cms | 0.32 N/mm |
| Sd | 346.36 cm2 |
| Vas | 53.7803 l |
| Sensitivity 1 watt/1 meter SPL | 80.5 dB |
| Xmax (one way) | 18 mm |
| Xmech (one way) | 21 mm |
| Re | 2.15 Ω (parallel) |
| Le | 0.49 mH |
| Fs | 21.56 Hz |
| Qts | 0.430 |
| Qes | 0.440 |
| Qms | 11.350 |
| BL | 13.276 |
| Mms | 277.657 |
| Cms | 0.20 mm/N |
| Sd | 346.36 cm2 |
| Vas | 34.2157 l |
| Xmax @ BL 70% | 18.37 mm |
| Xmax @ Cms 50% | 17.17 mm |
| Xmax @ Le 17% | >18.55 mm |
| Re | 2.17 ohms |
| Le | 0.49 mH |
| Fs | 16.91 Hz |
| Qts | 0.35 |
| Qes | 0.36 |
| Qms | 11.89 |
| BL | 13.276 N/A |
| Mms | 277.657 g |
| Cms | 0.32 N/mm |
| Sd | 346.36 cm2 |
| Vas | 53.7803 l |
| Xmax @ BL 70% | 18.37mm |
| Xmax @ Cms 50% | 17.17mm - will be fixed on revision 2 |
| Xmax @ Le 17% | >18.55mm - Not reached within our ±17 mm evaluation window on this sample |