SB-Acoustics SB25ADC-C000-4 Metal Dome Tweeter

This tweeter features a  aluminum dome with a large roll  surround.

The dome is strategicaly set into the voice coil former which moves the break up mode beyond the normal hearing range.  If you've resisted metal domes before, you definatley owe this one an audition.

The face plate has been optimized to provide a extended frequency response with exception off axis response. The tweeter has a chambered back designed to provide a lower resonance frequency and reduce back wave reflections from the dome. Copper cap on pole piece. The diffusor provides linear frequency response and protects the dome.

100 mm flange diameter
70 mm cut out hole size (notch for terminals)
3 mm flange thickness
34.14 mm depth

Impedance 4 ohm
DC resistance 3.2 ohm
V.C. inductance 0.05 mH
Effective cone area 6.2 cm2
V.C. diameter 25.4 mm
VC height 1.3
Air gap 2.5
Linear excursion ±1.2 mm
Moving mass incl. air 0.3 g
Free air resonance Fs 700 Hz
Sensitivity 2.83V/1M 91 dB
Qms 1.2
Qes 1.4
Qts 0.8
Force factor BL Product 1.7 Tm
Power 120 W
Magnet flux density 1.25 T
Magnet weight 0.22 kg