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SWR 269 |
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SWR 269 |
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Thiele Small parameters: |
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|
Free air |
Common |
Baffled |
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Nominal impedance |
Zn |
(ohm) |
|
4 |
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|
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Minimum impedance/at freq. |
Zmin |
(ohm/Hz) |
|
2.4/133 |
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Maximum impedance |
Zo |
(ohm) |
|
28.5 |
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DC resistance |
Re |
(ohm) |
|
1.8 |
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Voice coil inductance |
Le |
(mH) |
|
1.5 |
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Capacitor in series with 4 ohm |
Cc |
(µF) |
|
32 |
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Resonance Frequency |
fs |
(Hz) |
39.4 |
|
38.8 |
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Mechanical Q factor |
Qms |
|
6.37 |
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6.47 |
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Electrical Q factor |
Qes |
|
0.42 |
|
0.43 |
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Total Q factor |
Qts |
|
0.39 |
|
0.40 |
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F (Ratio fs/Qts) |
F |
(Hz) |
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96 |
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Mechanical resistance |
Rms |
(Kg/s) |
|
4.55 |
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Moving mass |
Mms |
(g) |
117.0 |
|
121.0 |
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Suspension compliance |
Cms |
(mm/N) |
|
0.14 |
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Effective cone diameter |
D |
(cm) |
|
20.6 |
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Effective piston area |
Sd |
(cm²) |
|
333 |
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Equivalent volume |
VAS |
(ltrs) |
|
21.4 |
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Force factor |
Bl |
(N/A) |
|
11.0 |
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Reference voltage sensitivity |
|
(dB) |
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|
92.2 |
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Magnet and voice coil parameters: |
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Voice coil diameter |
d |
(mm) |
51 |
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Voice coil length |
h |
(mm) |
33 |
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Voice coil layers |
n |
|
4 |
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Flux density in gap |
B |
(T) |
1.04 |
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Total useful flux |
|
(mWb) |
2.50 |
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Height of the gap |
hg |
(mm) |
8 |
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Diameter of magnet |
dm |
(mm) |
147 |
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Height of magnet |
hm |
(mm) |
35 |
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Weight of magnet |
|
(kg) |
2.42 |
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