Acoustic Elegance TD8M-8

Mid-range

8″ / 203 mm
Nominal diameter
76 Hz
Resonance
0.26
Q factor
95 dB
Sensitivity
± 3 mm
Linear excursion
400 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
Sensitivity (1W, 1m, infinite baffle)
SPL1W
95.2
dB
Frequency response
50 - 6000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
75.9
Hz
Mechanical quality factor
QMS
7.89
Electrical quality factor
QES
0.27
Total quality factor
QTS
0.26

Large signal parameters

Maximum linear excursion
xmax
3.0
mm
Maximum excursion before damage
xlim
6.0
mm
Air volume displaced at xmax
VD
57
cm³
Power handling
P
200
W
Program power
Pmax
400
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
6.7
Ω
Inductance (1kHz)
LE
0.15
mH

Magnet

Force factor
Bl
15.5
N/A
Motor constant
Bl/√RE
5.99
N/√W

Diaphragm

Effective diameter
156
mm
Effective area
SD
190
cm²
Moving mass
MMS
20
g
Moving mass (without air load)
MMD
18
g

Suspensions

Stiffness
KMS
4.55
N/mm
Compliance
CMS
220
µm/N
Equivalent volume to the compliance
VAS
11.3
L
Mechanical resistance
RMS
1.2
N·s/m

Dimensions

Nominal diameter
8
203
mm
Volume occupied by the driver (estimated)
0.85
L
Acoustic Elegance TD8M-8 SPL

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