Revision:3 | Date: 2014-10-11
Full Range
This 2.5 inch 4 ohm member of the PLS family sets a high standard for compact full range drivers intended for applications such as television soundbars and compact music systems. Design features in this family include a stiff steel basket with venting under the spider to aid cooling of the motor, a ferrite magnet motor with copper cap to lower coil inductance, providing low distortion at low frequencies and extended high frequency response. A black anodized aluminium cone is employed, along with a black anodized aluminium dust cap coupled directly to the voice coil. Additionally, the cones come equipped with special-designed large roll rubber surrounds, which allow for a dynamic linear response at high excursion.
MECHANICAL 2D DRAWING
PLS-65F25AL04-04
SPECIFICATIONS
DC Resistance |
Revc |
Ω |
3.61 |
±5.0% |
Moving Mass |
Mms |
g |
2 |
Minimum Impedance |
Zmin |
Ω |
4.33 |
±7.5% |
Suspension Compliance |
Cms |
um/N |
864 |
Voice Coil Inductance |
Le |
mH |
0.03 |
– |
Effective Cone Diameter |
D |
cm |
5.2 |
Resonant Frequency |
fs |
Hz |
120.6 |
15% |
Effective Piston Area |
Sd |
cm2 |
21.2 |
Mechanical Q Factor |
Qms |
– |
4.14 |
– |
Equivalent Volume |
Vas |
L |
0.55 |
Electrical Q Factor |
Qes |
– |
0.82 |
– |
Motor Force Factor |
BL |
T•m |
2.53 |
Total Q Factor |
Qts |
– |
0.69 |
– |
Motor Efficiency Factor |
β |
(T•m2)/Ω |
1.8 |
Ratio |
fs/Qts |
– |
176.05 |
– |
Voice Coil Former Material |
VCfm |
– |
ASV |
Half Space Sensitivity |
dB@2.83V/1m |
dB |
85.59 |
±1.01 |
Voice Coil Inner Diameter |
VCd |
mm |
25.73 |
Sensitivity |
1W/1m |
dB |
82.9 |
±1.01 |
Gap Height |
Gh |
mm |
3 |
Rated Noise Power (IEC 268-5 18.1) |
P |
W |
25 |
– |
Maximum Linear Excursion |
Xmax |
mm |
1.7 |
Test Spectrum Bandwidth |
|
12 dB/Oct |
100Hz~20KHz |
– |
Ferrofluid Type |
FF |
– |
|
Energy Bandwidth Product |
EBP |
(1/Qes)•fs |
|
– |
Transducer Size |
– |
– |
2.5 in |
|
|
|
|
– |
Transducer Mass |
– |
Kg |
0.34 |
FREQUENCY & IMPEDANCE RESPONSE
© 2015 Tymphany HK Ltd. | Address: 1307-8 Dominion Centre, 43-59 Queen's Rd. East., Wanchai, Hong Kong | Email: sales@tymphany.com