Accuton C25-4-158 Tweeter 4 Ohm 1 piece

The Accuton C25-4-158 is a tweeter with an ultra-hard 25mm ceramic cone in a 58mm aluminum enclosure. A proprietary clamping technique allows easy mounting and adaptation to various front panel designs. Since the diaphragm's breakup frequency is above the audible range and well damped, no diaphragm cutouts are required. A unique FEA-optimized underhang design with vented titanium voice coil former and dual neodymium magnet ensures low energy storage, excellent heat transfer and high excursion for low compression and extremely low distortion. The redesigned soft fabric surround centers the moving parts with improved linearity. We recommend our Accuton C25-4-158 in an application above 2000 Hz.

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Short Description :

25 mm tweeter with ceramic cone. A magnet system with neodymium magnets drives the speaker. The underhang voice coil remains completely in the magnetic field during linear operation.

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Mechanical data :

Total diameter front panel 576 mm

Hole cut-out 58 mm

Minimum front panel thickness 6 mm

Overall height 28 mm

Weight 0,3 Kg

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Thiele Small Parameter:

Sensitivity : Spl : 92.5 dB

Impedance : 4 Ohm

Resistance(DC) : Re : 5.69 Ohm

Free air resonance frequency : Fs 905 Hz

Mechanical quality : Qms 2.87 Electrical Q : Qes 0.97

Overall quality Qts : 0.73

Effective diaphragm area : Sd 5.94 Cm2

Moving mass Mms : 0.28 G

Membrane stress compliance : Cms 0.235 Mm/N

Mechanical resistance Rms : 0.86 Kg*S

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Voice coil parameters:

Power handling : P 100 W RMS

Impedance 4 Ohm

Linear excursion : Xmax : +/-0.9 Mm

Voice coil carrier material : Ti

Conductor material : Cu Voice coil inductance : Le 0.02 Mh

Force factor : Bl 3.27 N/A

Drive type : Underhung

Ferrofluid in air gap : No