6.5″ / 165 mm
Nominal diameter
59 Hz
Resonance
0.63
Q factor
87 dB
Sensitivity
± 5.08 mm
Linear excursion
60 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
Sensitivity (1w, 1m, infinite baffle)
SPL1W
87.3
dB
Frequency response
50 - 10000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
59.0
Hz
Mechanical quality factor
QMS
3.30
Electrical quality factor
QES
0.79
Total quality factor
QTS
0.63
Large signal parameters
Maximum linear excursion
xmax
5.08
mm
Air volume displaced at xmax
VD
67
cm³
Power handling
P
30
W
Program power
Pmax
60
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.0
Ω
Inductance (1kHz)
LE
0.2
mH
VC Diameter
26
mm
Magnet
Force factor
Bl
4.14
N/A
Motor constant
Bl/√RE
2.39
N/√W
Air gap height
HAG
4
mm
Diaphragm
Effective diameter
129
mm
Effective area
SD
131
cm²
Moving mass
MMS
12.2
g
Moving mass (without air load)
MMD
11.1
g
Suspensions
Stiffness
KMS
1.64
N/mm
Compliance
CMS
610
µm/N
Equivalent volume to the compliance
VAS
14.7
L
Mechanical resistance
RMS
1.37
N·s/m
Dimensions
Nominal diameter
6.5
″
165
mm
Volume occupied by the driver (estimated)
0.25
L
Net weight
0.65
kg
Similar woofers to Peerless BC18WG59-04
6.5″Woofer
fS
59 Hz
SD
136 cm²
56 - 8000 Hz
QTS
0.61
xmax
2.5 mm
SPL1W
87 dB
Bl/√RE
2.7
Pmax
180 W
6″Woofer
fS
55 Hz
SD
139 cm²
60 - 5000 Hz
QTS
0.61
xmax
3.0 mm
SPL1W
87 dB
Bl/√RE
2.62
Pmax
180 W
6.5″Woofer
fS
60 Hz
SD
136 cm²
50 - 5000 Hz
QTS
0.60
xmax
5.1 mm
SPL1W
88 dB
Bl/√RE
2.74
Pmax
240 W