General Report




Driver Name: PSM 120

Driver Comment:

Measurement: LSI nonlin. Parameters

Measurement Comment: Automatic Noise adjustment provides sufficient energy about resonance.
Optimal for precise measurement of nonlinear parameters Bl(x), Cms(x), Le(x).
Not optimal for measurement of thermal parameters (use other template)

Force factor Bl (X)
Mechanical compliance Cms (X)
Stiffness of suspension Kms (X)
Electrical inductance Le (X)
Total loss factor Qts (X)
   
 Symbol   Large + Warm   Large + Cold   Small Signal   Unit   Comment 
 Delta Tv = Tv-Ta   20   0   -0   K   increase of voice coil temperature during the measurement  
 Xprot   4.1   4.1   2.2   mm   maximal voice coil excursion (limited by protection system) 
   
 Re (Tv)   3.29   3.06   3.06   Ohm   (imported) voice coil resistance considering increase of voice coil temperature Tv 
 Le (X=0)   0.15   0.15   0.15   mH   voice coil inductance at the rest position of the voice coil 
 L2 (X=0)   0.14   0.14   0.14   mH   para-inductance at the rest position due to the effect of eddy current 
 R2 (X=0)   0.72   0.72   0.69   Ohm   resistance at the rest position due to eddy currents 
 Cmes (X=0)   340   340   332   µF   electrical capacitance representing moving mass 
 Lces (X=0)   6.60   6.60   4.41   mH   electrical inductance at the rest position representing driver compliance 
 Res (X=0)   21.80   21.80   22.12   Ohm   resistance at the rest position due to mechanical losses 
   
 Qms (X=0, Tv)   4.95   4.95   6.07       mechanical Q-factor considering Rms only 
 Qes (Tv)   0.64   0.59   0.73       electrical Q-factor considering Re (Tv) only 
 Qts (X=0, Tv)   0.56   0.53   0.65       total Q-factor considering Re (Tv) and Rms only 
 fs   106.3   106.3   131.5   Hz   driver resonance frequency 
   
 Mms   6.540   6.540   6.540   g   (imported) mechanical mass of driver diaphragm assembly including voice-coil and air load 
 Rms (X=0)   0.883   0.883   0.890   kg/s   mechanical resistance of total-driver losses 
 Cms (X=0)   0.34   0.34   0.22   mm/N   mechanical compliance of driver suspension at the rest position 
 Bl (X=0)   4.75   4.75   4.75   N/A   (imported) force factor at the rest position (Bl product) 
 Sd   n/a               IMPORT Sd at Driver page to display Vas, N0, and Lm 
   

Report generated:
  Date: 02/01/06
  Time: 16:31:12
  Username: kirschke

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