Punch BP 12/250

General Characteristics for 8Ω
Nominal Overall Diameter318 mm.12 in.
Nominal Voice Coil Diameter65 mm.2.50 in.
Magnet Weight1450 g51.20 oz
Overall Weight10.58 lbs
Flux Density1.15 T
Voice Coil Winding Depth0.47 in.
Magnetic Gap Depth0.31 in.
Thiele-Small Parameters for 8Ω
Voice Coil DC ResistanceRE6.21 Ω
Resonance FrequencyƒS50.2 Hz
Mechanical Q FactorQMS5.14
Electrical Q FactorQES0.34
Total Q FactorQTS0.32
Mechanical Moving MassMMS46.6 g
Mechanical ComplianceCMS216 µm/N
Force FactorBxL16.40 Wb/m
Equivalent Acoustic VolumeVAS73.5 lt.
Maximum Linear DisplacementXMAX±3.10 mm
Excursion LimitXVAR±5.5 mm
Reference EfficiencynO2.64 %
Diaphragm AreaSD490.9 cm2
Voice Coil Inductance @ 1kHzLE0.94 mH
Constructive Characteristics for 8Ω
Voice Coil WindingCopper
Voice Coil FormerKapton
Cone MaterialPaper
Surround MaterialTreated Cloth
Dust Dome MaterialSolid Paper
Basket MaterialPressed Sheet Steel
Cone TreatmentNo
Electrical Characteristics for 8Ω
Nominal Impedance8 Ω
Rated Power250 W
Musical Power500 W
Sensitivity@1W,1m97.5 dB
250 watts
  • Ohms:

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.

Thick and defined.
Sound Samples:
Blues (Walking Groove)00:20https://www.jensentone.com/sites/jensentone.com/files/sound_samples/bp12_blues_walk.mp3
Reggae (Smooth Groove)00:23https://www.jensentone.com/sites/jensentone.com/files/sound_samples/bp12_irie_0.mp3
Rock (Pick Attack)00:41https://www.jensentone.com/sites/jensentone.com/files/sound_samples/bp12_pick_attack_0.mp3
Funk (Slap Attack)00:16https://www.jensentone.com/sites/jensentone.com/files/sound_samples/bp12_slap_stick_0.mp3
Having trouble playing our sound samples? Click here to access the files directly.