Jensen Punch Sound BP 12/250 8Ω 12" Bass Speaker


Jensen Punch Sound BP 12/250 8Ω 12" Bass Speaker


Jensen Punch Sound

   Made in Italy - The Jensen®  name is synonymous with classic vintage tone, and is the pioneer in modern state-of-the-art speakers today.

Punch Sound speakers offer great dynamics and super-fast response, giving the player an extremely solid bass sound. Equipped with ferrite magnets and steel baskets, they are ideal for classic styles where a clean, tight and bright sound is required.



Bassist Description: Thick and defined.


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General Characteristics for 8Ω
Nominal Overall Diameter 318 mm. 12 in.
Nominal Voice Coil Diameter 65 mm. 2.50 in.
Magnet Weight 1450 g 51.20 oz
Overall Weight 10.58 lbs
Flux Density 1.15 T
Thiele-Small Parameters for 8Ω
Voice Coil DC Resistance RE 6.21 Ω
Resonance Frequency ƒS 50.2 Hz
Mechanical Q Factor QMS 5.14
Electrical Q Factor QES 0.34
Total Q Factor QTS 0.32
Mechanical Moving Mass MMS 46.6 g
Mechanical Compliance CMS 216 µm/N
Force Factor BxL 16.40 Wb/m
Equivalent Acoustic Volume VAS 73.5 lt.
Maximum Linear Displacement XMAX ± 3.10 mm
Excursion Limit XVAR ± 5.5 mm
Reference Efficiency nO 2.64 %
Diaphragm Area SD 490.9 cm2
Voice Coil Inductance @ 1kHz LE 0.94 mH
Constructive Characteristics for 8Ω
Magnet Ferrite
Voice Coil Winding Copper
Voice Coil Former Kapton
Cone Material Paper
Surround Material Treated Cloth
Dust Dome Material Solid Paper
Basket Material Pressed Sheet Steel
Electrical Characteristics for 8Ω
Nominal Impedance 8 Ω
Rated Power 250 W
Musical Power 500 W
Sensitivity@1W,1m 97.5 dB