NE25VTS-04 Rev1_0
Transducer Specification Sheet
Model Number: NE25VTS-04
Description: Vifa RM 25mm Tweeter "Silk"
Revision: rev 1_0
Date: Sep 4 09
AR
Y
The Vifa NE product line has leading-edge transducer technology
packaged in a cutting edge, stylistic design. The tweeters in this
product line finite element analysis designed Neodymium-Iron-Boron
magnet (NdFeB) motors, with copper caps for extended frequency
response and reduced distortion. The aluminium rear chambers offer
extended low frequency performance, while doubling as heat sinking.
The butterfly supporting the tweeter diaphragm is made of a high
temperature plastic, consistent with the product’s high temperature
performance rating, and features supporting terminals. The dome
material in this design is silk, and the design has been optimized for
sound quality and clarity. Rounding out the design is an aluminium face
plate and plastic grille, which offers protection for the tweeter
diaphragm.
EL
IM
IN
Mechanical 2D Drawing:
Specifications:
Revc
Zmin
Le
fs
Qms
Qes
Qts
DC Resistance
Minimum Impedance
Voice Coil Inductance
Resonant Frequency
Mechanical Q Factor
Electrical Q Factor
Total Q Factor
Ratio fs / Qts
Half Space Sensitivity @ 2.83V
Rated Noise Power (IEC 2685 18.1)
(1/Qes)·fs
3.1
3.56
0.01
777
6.4
1.14
0.96
806
Energy Bandwidth Product
Moving Mass
Suspension Compliance
Effective Cone Diameter
Effective Piston Area
Equivalent Volume
Motor Force Factor
Motor Efficiency Factor
EBP
Mms
Cms
F
Ω
Ω
mH
Hz
fs / Qts
BL
β
(T·m )/Ω
685
0.35
119.0
3.2
8.0
0.01
2.17
1.52
dB@2.83V/1m
P
dB
W
92.0
na
Voice Coil Former Material
Voice Coil Inner Diameter
Maximum Linear Excursion
VCfm
VCd
Xmax
mm
mm
Al
25.8
0.10
-
kg
0.1
Test Spectrum Bandwidth
2k-20kHz
12 dB/Oct
Transducer Mass
D
SD
Vas
g
um/N
cm
2
cm
L
T·m
2
Frequency and Impedance Response:
60 Deg
Imp
SPL[dB] @ 2.83Vrms/1m
50
90
40
80
30
70
20
60
10
50
10
100
1000
10000
Impedance [Ohms] @ 1.415Vrms
30 Deg
PR
On Axis
100
0
100000
Frequency [Hz]
F088-0713A
Tymphany HK Ltd
Address : Room 1307-8 Dominion Centre, 43-59 Queen's Rd East, Wanchai, Hong Kong
E-mail: sales@tymphany.com
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