28mm Textile Dome Treble
D2905/970000 is a true high-end tweeter, with a magnet system using Scanspeak's Symmetric Drive technology, which almost eliminates electrical phase shift. A carefully designed chamber under the surround minimises air noise and compression and the Symmetric Drive copper caps also act as heat conductors.
The D2905/970000's high power handling is thanks to Ferro fluid in the air gap, which also improves micro-dynamic linearity and helps to reduce distorton.
The tweeter is characterised by a smooth, slightly rising frequency response, with excellent detail and clarity.
Faceplate Diameter: 104mm
Sensitivity (2.83v/1m): 89.5dB
Nominal impedance: 6 ohm
Frequency range: 2-30kHz
Free air resonance: 500Hz
DC resistance (Re): 4.7 ohm
Voice coil inductance (Le): 0.01mH
Effective piston area (Sd): 8.5cm
Moving Mass (Md): 0.45g
Force factor (BL): 3.5Tm
Excursion (lin-max): +/-0.4 - +/-1.5mm
Voice coil diameter: 28mm
Nominal power handling: 225w
Faceplate diameter: 104mm
Overall depth (front of faceplate to rear of chamber): 44mm
Faceplate thickness: 3mm
Fixing holes: 4 x 5mm diameter on 90mm PCD
Rear chamber diameter: 73.5mm
Price per single unit excluding VAT