Scan-Speak Revelator 12M/4631G00

Mid-range

4.5″ / 120 mm
Nominal diameter
75 Hz
Resonance
0.33
Q factor
86 dB
Sensitivity
± 3 mm
Linear excursion
70 W
Program Power
Scan-Speak 12M/4631G00 Mid-rangeScan-Speak 12M/4631G00 Mid-rangeScan-Speak 12M/4631G00 Mid-range
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
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
86.4
dB
Frequency response
85 - 10000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
75.0
Hz
Mechanical quality factor
QMS
5.57
Electrical quality factor
QES
0.35
Total quality factor
QTS
0.33

Large signal parameters

Maximum linear excursion
xmax
3.0
mm
Maximum excursion before damage
xlim
7.0
mm
Air volume displaced at xmax
VD
15
cm³
Power handling
P
40
W
Program power
Pmax
70
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.2
Ω
Inductance (1kHz, estimated)
LE
0.14
mH
VC Diameter
38
mm
Winding height
HVC
10
mm

Magnet

Force factor
Bl
5.3
N/A
Motor constant
Bl/√RE
2.96
N/√W
Air gap height
HAG
4
mm
Material
Neodymium

Diaphragm

Effective diameter
79
mm
Effective area
SD
49
cm²
Moving mass
MMS
6.5
g
Moving mass (without air load)
MMD
6.2
g
Material
Sliced

Suspensions

Stiffness
KMS
1.45
N/mm
Compliance
CMS
690
µm/N
Equivalent volume to the compliance
VAS
2.3
L
Mechanical resistance
RMS
0.55
N·s/m

Dimensions

Nominal diameter
4.5
″
120
mm
Volume occupied by the driver
0.14
L
Net weight
0.6
kg
SPL & Impedance
Scan-Speak 12M/4631G00 SPL & Impedance
Scan-Speak 12M/4631G00 Dimensions
DatasheetDatasheet

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