Jensen Punch BP 12/250

Name: BP 12/250
Brand: Jensen

Bass Guitar Speaker

12″ / 318 mm

Nominal diameter

50 Hz

Resonance

0.32

Q factor

96 dB

Sensitivity

± 3.1 mm

Linear excursion

500 W

Program Power

Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 95.6; dB
Resonance frequency (free air)
f_S: 50.2; Hz
Mechanical quality factor
Q_MS: 5.14
Electrical quality factor
Q_ES: 0.34
Total quality factor
Q_TS: 0.32
Maximum linear excursion
x_max: 3.1; mm
Maximum excursion before damage
x_lim: 5.5; mm
Air volume displaced at x_max
V_D: 152; cm³
Power handling
P: 250; W
Program power
P_max: 500; W
Nominal impedance
Z: 8; Ω
DC resistance
R_E: 6.2; Ω
Inductance (1kHz)
L_E: 0.94; mH
VC Diameter: 65; mm
Winding height
H_VC: 12; mm
Winding material: Copper
Former material: Kapton
Flux density
B: 1.15; T
Force factor
Bl: 16.4; N/A
Motor constant
Bl/√R_E: 6.58; N/√W
Air gap height
H_AG: 10; mm
Weight: 1.45; kg
Material: Ferrite
Effective diameter: 250; mm
Effective area
S_D: 491; cm²
Moving mass
M_MS: 46.6; g
Moving mass (without air load)
M_MD: 38.5; g
Material: Paper
Stiffness
K_MS: 4.63; N/mm
Compliance
C_MS: 216; µm/N
Equivalent volume to the compliance
V_AS: 73.5; L
Mechanical resistance
R_MS: 2.86; N·s/m
Surround material: Treated Cloth
Nominal diameter: 12; ″
: 318; mm
Overall diameter: 318; mm
Volume occupied by the driver (estimated): 2.1; L
Net weight: 4.8; kg
Frame material: Pressed Sheet

Datasheet

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Jensen Punch BP 12/250

Bass Guitar Speaker

Thiele & Small parameters

Large signal parameters

Voice Coil

Magnet

Diaphragm

Suspensions

Dimensions

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