Peerless TC7FD04-04

Full-range

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
Discard
Apply

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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
Material
Ferrite

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
Surround material
Fabric

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
Peerless TC7FD04-04 SPL & Impedance
Peerless TC7FD04-04 Dimensions

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