Gradient No Ferro 900 Softdome Tweeter

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RRP 49,90 €

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Gradient No Ferro 900 Softdome Tweeter

This very fast dome without ferrofluid in the air gap with a resonant frequency of only 900 Hz is manufactured in a special selection process. Based on our requirements and ideas, the tweeter has been produced for us by Seas for many years.

In terms of sound, the tweeter is still a sensation today, since usually only much more expensive domes have this sovereign, musical potential, which can convince with the best linearity.
Area of ​​application: Use from 1800 Hz with 12 dB/oct in systems with the highest demands. The NoFerro900 has been used in many kits and has lost none of its quality.

Technical Data:
  • Impedance: 8 ohms
  • Load capacity (nominal/music): 60 / 150 watts
  • Resonant frequency (fs): 900 Hz
  • DC resistance (Re): 4.8 ohms
  • Sensitivity: 92 dB (1W; 1m)
  • Air gap height: 2.0 mm
  • Voice coil (D; length): 26 mm; 1.5mm
  • Force Factor (F/I): 3.80 N/A
  • Voice coil inductance 0.05 mH
  • Effective membrane area: 7.60 qcm
  • Moved mass including air load: 0.29 g

Short data

Usage as Tweeter
Power Handling 60 Watt
Impedance 8 Ohm
Frequency from 1500 Hz
Sound pressure 92 dB


Voice coil Ø 26 mm
Voice coil height 1.5 mm


DC-Resistance Re: 4.8 Ohm
Moving Mass Mms: 0.29 g
BL Product Bl: 3.8 N/A
Membrane Area Sd: 7.6 cm²
Sound pressure dB: 92 SPL


You receive a 2 year warranty from the date of purchase for all of our high quality hifi-products.

If you observe any problem while using the product, you have the possibility to contact our friendly service team.

You can also easily manage your guarantee concern – without being obliged to – under the section My Account.