2.5″ / 64 mm
Nominal diameter
210 Hz
Resonance
0.77
Q factor
85 dB
Sensitivity
± 2 mm
Linear excursion
40 W
Program Power
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
85.4
dB
Frequency response
100 - 20000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
210
Hz
Mechanical quality factor
QMS
3.43
Electrical quality factor
QES
0.99
Total quality factor
QTS
0.77
Large signal parameters
Maximum linear excursion
xmax
2.0
mm
Air volume displaced at xmax
VD
4.1
cm³
Power handling
P
20
W
Program power
Pmax
40
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.4
Ω
Inductance (1kHz)
LE
0.02
mH
VC Diameter
19
mm
Magnet
Force factor
Bl
2.56
N/A
Motor constant
Bl/√RE
1.39
N/√W
Air gap height
HAG
3
mm
Diaphragm
Effective diameter
51
mm
Effective area
SD
20
cm²
Moving mass
MMS
1.4
g
Moving mass (without air load)
MMD
1.4
g
Suspensions
Stiffness
KMS
2.56
N/mm
Compliance
CMS
390
µm/N
Equivalent volume to the compliance
VAS
0.229
L
Mechanical resistance
RMS
0.55
N·s/m
Dimensions
Nominal diameter
2.5
″
64
mm
Volume occupied by the driver (estimated)
0.12
L
Net weight
0.33
kg
Frame material
Pressed Steel
Similar speaker drivers to Peerless TC7FD04-04
2″Full-range
fS
212 Hz
SD
17 cm²
200 - 20000 Hz
QTS
0.82
xmax
2.4 mm
SPL1W
85 dB
Bl/√RE
1.28
Pmax
30 W
3″Full-range
fS
215 Hz
SD
21 cm²
150 - 22000 Hz
QTS
0.69
xmax
2.5 mm
SPL1W
86 dB
Bl/√RE
1.64
2″Full-range
fS
210 Hz
SD
17 cm²
200 - 20000 Hz
QTS
0.92
xmax
2.4 mm
SPL1W
84 dB
Bl/√RE
1.28
Pmax
30 W