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Crédit photo: .Kartesian company

Sub250_vHE has been designed to reproduce powerful bass impact and every single detail in low frequency. It integrates several innovation to keep THD below 1% from 25Hz to 300Hz (free air, playing 90dB at 1m).


Suspension are fully balanced by reinforced NBR surround and dual dynamiK spiders, keeping unchanged resonance frequency value, whatever the cone excursion (+/-12mm).


The motor structure uses 2x NdFeB magnets, 2x Aluminum rings and advanced pole pieces design to get strong magnetic field and cool the voice coil. This one is built on Ø82mm glass fiber former, made of only 2 layers (1inner / 1outer) to minimize the inductance value and the related modulation.

T&S parameters

Fs : 26Hz

SPL : 88dB /2,8V /1m

Re : 4,2Ω

Qms : 6.4%

Qts : 0,312%

Bl : 14.9N/A

VAS : 57.3L

Mms : 106g

Sd : 338cm²

Frequency responses

On IEC baffle

Pink noise

Distance: 1m

Signal input: 2,83V

Smoothing: 1/12 octave

Curve below 75Hz is simulated:

60L vented enclosure

Tuning frequency: 25Hz

Impedance measured in free air

Sub250_vHE_Official response + Z.PNG
Sub250_vHE _drawing_edited.jpg

Mechanical drawing

Unit: mm]

Advanced design

Dynamik Spider.png
Konstant Le(X).png
Kombo magnets.png

Treated 6 layers paper cone

Large reinforced NBR surround

Carbon fiber dust cap

Ø82mm Cu voice coil (2 layers)

Reinforced / Vented Glass fiber former

Optimized pole pieces

Inductance non-linearity device

Demodulated by 2 Al rings

Innovative twin .dynamiK spiders

Aluminum frame with vented spiders

Kompund CGF.png
Crédit photo: .Kartesian company

Advanced measurements

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Note: We improve continually our products. No contractual data.
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