Punch BP 12/250

General Characteristics for 8Ω

Nominal Overall Diameter
318 mm
13 in
Nominal Voice Coil Diameter
65 mm
3 in
Magnet Weight
1450 g
51 oz
Overall Weight
4.8 kg
10.58 lbs
Flux Density
1.15 T
Voice Coil Winding Depth
12 mm
0.47 in
Magnetic Gap Depth
10 mm
0.39 in

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
16.4 Wb/m
Equivalent Acoustic Volume
VAS
73.5 lt.
Maximum Linear Displacement
XMAX
± 3.1 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
Surround Treatment
No

Electrical Characteristics for 8Ω

Nominal Impedance
8 Ω
Rated Power
250 W
Musical Power
500 W
Sensitivity@1W,1m
97.5 dB
BP12250
12",
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.

Lows
Tight
Mids
Firm
Highs
Bright
Bassist Description
Thick and defined.
Specification Sheet
Product Dimensions