VOXATIV AC-X Fieldcoil-Drivers

Smooth, detailed and elegant...

In search of the rediscovery of natural sound, Voxativ has now gone one step further.

With respect to the old Voigt, Jensen and Klangfilm drivers, this type of transducer is now revived using completely new technology and materials.

Our suspensions are made of genuine goat leather. This saves a lot of motional cone energy which suddenly becomes available for sound reproduction. The result is incredible detail resolution.

The AC-X is driven by a large field coil instead of permanent magnet. With this magnetic force, the driver reaches the physical maximum dynamic performance. The housing of the AC-X is made from carbon-free steel and additional Permendur plates. The AC-X has a Qts between 0.25 and 0.6 contingent on the supply voltage which can be set from 6 to 18 volts.

It enables the user to adjust the driver to all installation conditions and playback requirements. The optimal value in our experience is 12V. Delivery includes a standard power supply. A high-end battery power supply may be delivered upon request.

Different to the designs of the 1940s or current DIY projects, the field coil of our AC-X is completely shielded to avoid a radiated field and improve its performance. The reduction in supply voltage of approximately 100V in vintage designs to now 12V and a maximum of 18V has the AC-X conform to all modern security and energy conservation issues to perform without concerns in your living room.

Enclosure possibilities:

  1. full-range mode in a back-loaded horn for bass radiation down to 25Hz
  2. ‘open baffle’ (plans are delivered with the driver)
  3. as a 2-way freely radiating driver with dipole woofers and/or loaded into a front horn.

If you are able to visit our Berlin studio, we would be delighted to demonstrate this extraordinary experience for you.

Technical data:

Frequency response:
20 Hz - 20.000 Hz
Efficiency: max. 108 dB
Capacity: 50 W nom.
Impedance [R]: 10,7 Ohm
Complex impedance [Z]: 16,0 Ohm
Resonance frequency: 29,12 Hz
Mech. Q-factor [Qms]: 3,1 / 12V
Electr. Q-factor [Qes]: 0,4 / 12V
Q-factor [Qts]: 0,354 / 12V
Equivalent volume [VAS]: 148,0 Ltr.
Xmss: 8 mm
Depth: 166 mm
Installed diameter: 190 mm
Weight: 12 kg





VOXATIV AC-X delivers great performance in all enclosures