Reckhorn D-250
Subwoofer
10″ / 250 mm
Nominal diameter
22 Hz
Resonance
0.33
Q factor
86 dB
Sensitivity
± 13 mm
Linear excursion
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.1
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
22.0
Hz
Mechanical quality factor
QMS
4.26
Electrical quality factor
QES
0.36
Total quality factor
QTS
0.33
Large signal parameters
Maximum linear excursion
xmax
13.0
mm
Air volume displaced at xmax
VD
429
cm³
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.8
Ω
Inductance (1kHz)
LE
2.32
mH
Magnet
Force factor
Bl
11.38
N/A
Motor constant
Bl/√RE
5.83
N/√W
Diaphragm
Effective diameter
205
mm
Effective area
SD
330
cm²
Moving mass
MMS
88
g
Moving mass (without air load)
MMD
83.6
g
Suspensions
Stiffness
KMS
1.67
N/mm
Compliance
CMS
600
µm/N
Equivalent volume to the compliance
VAS
91
L
Mechanical resistance
RMS
2.85
N·s/m
Dimensions
Nominal diameter
10
″
250
mm
Overall diameter
260
mm
Baffle cutout diameter
230
mm
Overall depth
145
mm
Flange thickness
8
mm
Mounting depth
137
mm
Volume occupied by the driver (estimated)
2.1
L
Net weight
5.1
kg
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Similar subwoofers to Reckhorn D-250
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10″Subwoofer
fS
21 Hz
SD
352 cm²
QTS
0.31
xmax
12.5 mm
SPL1W
86 dB
Bl/√RE
6.51
Pmax
200 W
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10″Subwoofer
fS
21 Hz
SD
352 cm²
QTS
0.31
xmax
12.5 mm
SPL1W
86 dB
Bl/√RE
6.51
Pmax
350 W