Precision Devices PD.155NR1

Mid Bass

15″ / 381 mm
Nominal diameter
37 Hz
Resonance
0.23
Q factor
96 dB
Sensitivity
± 12 mm
Linear excursion
2000 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
95.7
dB
Frequency response
45 - 2000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
37.0
Hz
Mechanical quality factor
QMS
6.10
Electrical quality factor
QES
0.24
Total quality factor
QTS
0.23

Large signal parameters

Maximum linear excursion
xmax
12.0
mm
Air volume displaced at xmax
VD
1074
cm³
Power handling
P
1000
W
Program power
Pmax
2000
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.4
Ω
Inductance (1kHz)
LE
2.35
mH
VC Diameter
127
mm
Winding height
HVC
30.5
mm
Winding material
Copper
Former material
Glass Fibre

Magnet

Flux density
B
1.18
T
Force factor
Bl
28.6
N/A
Motor constant
Bl/√RE
12.3
N/√W
Air gap height
HAG
13
mm
Material
Neodymium

Diaphragm

Effective diameter
338
mm
Effective area
SD
895
cm²
Moving mass
MMS
154
g
Moving mass (without air load)
MMD
134.9
g
Material
Paper

Suspensions

Stiffness
KMS
8.12
N/mm
Compliance
CMS
123
µm/N
Equivalent volume to the compliance
VAS
140
L
Mechanical resistance
RMS
5.87
N·s/m

Dimensions

Nominal diameter
15
381
mm
Overall diameter
408
mm
Baffle cutout diameter
415
mm
Overall depth
210
mm
Flange thickness
11
mm
Mounting depth
199
mm
Volume occupied by the driver (estimated)
5.6
L
Net weight
10.0
kg
Precision Devices PD.155NR1 Impedance
Precision Devices PD.155NR1 SPL

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