53 NDT
Thiele Small parameters:      
Nominal impedance Zn (ohm) 4
Minimum impedance/at freq. Zmin (ohm/Hz) 3.7/3162
Maximum impedance Zo (ohm) 5.6
DC resistance Re (ohm) 3.4
Voice coil inductance Le (mH) 0.1
Resonance Frequency fs (Hz) 1413
Mechanical Q factor Qms   2.17
Electrical Q factor Qes   3.48
Total Q factor Qts   1.34
Mechanical resistance Rms (Kg/s) 1.18
Moving mass Mms (g) 0.29
Suspension compliance Cms (mm/N) 0.04
Effective cone diameter D (cm) 2.8
Effective piston area Sd (cm²) 6.2
Force factor Bl (N/A) 1.6
Reference voltage sensitivity
Re 2.83V 1m at 3162 Hz (Measured)
  (dB) 91.7


53 NDT
53 NDT 26 25 SF FF 4 ohm    -    Order ID: 811434

The new neodymium dome tweeter from Peerless is based on an original soft dome fabric which so far has only been used to produce Peerless High End tweeters. The soft fabric material guarantees very smooth and extended frequency response combined with the well known sound quality from our other tweeters.

The powerful magnet system has been designed with emphasis on high temperature performance. The voice coil is cooled by ferrofluid to achieve low power compression. Furthermore, it is possible when dealing with very high power handling applications to fit a heat sink.
Magnet and voice coil parameters:    
Voice coil diameter d (mm) 26
Voice coil length h (mm) 1.3
Voice coil layers n   2
Flux density in gap B (T) 1.02
Total useful flux   (mWb) 0.1
Height of the gap hg (mm) 2.5
Diameter of magnet dm (mm) 25
Height of magnet hm (mm) 3
Weight of magnet   (kg) 0.01