12” neodymium woofer offers 300Wrms (AES) continuous power handling and 98dB sensitivity
3” high temperature Inside/Outside voice coil efficiently dissipates heat, preventing sensitivity loss through thermal compression
M-roll surround provides progressive excursion control, yielding a smooth response even at extremes of frequency range
Extremely lightweight design combined with a highly efficient magnet assembly results in exceptional power-to-weight ratio
Intelligent heat management in both chassis and magnet assembly design further minimizes distortion
Nominal diameter (mm/in)
305/12
Power Rating (AES, W rms)
300
Nominal impedance (Ω)
8
Voice coil diameter (mm/in)
76.2/3.0
Magnet type
Neodymium
Chassis type
Cast aluminium
Sensitivity (dB)
98
Frequency range (Hz)
50-4000
Coil material
Round copper
Cone material
Kevlar loaded paper
Surround material
Cloth-sealed
Suspension
Single
Xmax (mm/in)
4/0.16
Gap depth (mm/in)
8.0/0.32
Voice coil winding width (mm/in)
16.0/0.63
Small Signal Parameters
D (m/in)
0.26/10.24
Fs (Hz)
56.4
Mmd (g/oz)
54.41/1.92
Mair
6.92/0.244
Qms
2.74
Qes
0.33
Qts
0.29
Re (Ω)
5.77
Vas (lt/ft3)
51.78/1.828
BI (Tm)
19.61
Cms (mm/N)
0.13
Rms (kg/s)
7.921
Le (mH)
0.778
Mounting Information
Overall diameter (mm/in)
310/12.2
Overall depth (mm/in)
137/5.39
Cut-out diameter (mm/in)
286/11.26
Mounting slot dimensions (mm/in)
6.5/0.26 x 9.5/0.37
Number of mounting slots
8
Mounting slot PCD range (mm/in)
294/11.57
Unit weight (kg/lb)
2.6/5.7
Packed Dimensions and Weight
Single pack size W x D x H (mm/in)
-
Single pack weight (kg/lb)
-
Multipack (60) size W x D x H (mm/in)
1080 x 980 x 880/42.5 x 38.6 x 34.6
Multipack (60) weight (kg/lb)
146/321
KAPPA PRO-12A Professional SeriesRecommended for professional audio in a vented mid-bass, and vented bass enclosure incorporating a high-pass filter.
Product type
Loudspeaker Chassis
Type
PA
Nominal Diameter
12 "
Nominal Diameter
304.8 mm
Voice Coil
3 "
Voice Coil
76.2 mm
Overall diameter
314.5 mm
Pitch Circle Diameter
293.8 mm
Cut- out Measurement
281.1 mm
Diameter of fixing holes
6.5 mm
Depth
158 mm
Nominal Impedance
8 Ohm(s)
Nominal Load Capacity
500 W
maximum rated load
1000 W
Sensitivity (1 W / 1 m)
97.1 dB
Frequency response
57 - 2800 Hz
Voice Coil Material
copper
Magnet
Ferrite
Depth of the magnetic gap
9.53 mm
Fs (Resonance Frequency)
37 Hz
Re (DC resistance)
5.46 Ohm(s)
Qms (mechanical quality)
6.93
Le (inductance of the voice coil)
1.22 mH
Qes (electrical quality)
0.25
Qts (overall quality)
0.24
Vas (equivalent volume)
121
Mms (moving mass)
59 g
BL (power factor)
17.3 T/m
Xmax (maximum displacement)
4.8 mm
Cms (elasticity of the suspension)
0.32 mm/N
Sd (membrane area)
519.5 cm²
Weight
7,924 kg
BETA- 12A Series Standard American
Recommended for professional audio and bass guitar applications as a woofer in a vented enclosure. Also
works well for PA in a sealed or bandpass enclosure.
SPECIFICATION
Nominal Basket Diameter 12", 304.8 mm
Nominal Impedance 8 ohms
Power Rating Watts 250 W / Music Program 500 W
Resonance 47 Hz
Usable Frequency Range 43 Hz - 3.8 kHz
Sensitivity 98
Magnet Weight 38 oz.
Gap Height 0.312", 7.92 mm
Voice Coil Diameter 2", 50.8 mm
THIELE & Small Parameters
Resonant Frequency (fs) 47 Hz
DC Resistance (Re) 5.0
Coil Inductance (Le) 0.64 mH
Mechanical Q (Qms) 6.00
Electromagnetic Q (Qes) 0.50
Total Q (Qts) 0.46
Compliance Equivalent Volume (Vas) 120.1 liters / 4.2 cu. ft.
Peak Diaphragm Displacement Volume (Vd) 237 cc
Mechanical Compliance of Suspension (Cms) 0.29 mm/N
Specification Nominal Diameter 320 (12) mm (in) Nominal Impedance (1) 8 Ohm Minimum Impedence 7.5 Ohm Nominal Power Handling (2) 450 W Continuous Power Handling (3) 900 W Sensitivity (1W/1m) (4) 95 dB Frequency Range 40 - 1000 Hz Voice Coil Diameter 76 (3) mm (in) Winding Material Copper Former Material Glass Fibre Winding Depth 22 (0.9) mm (in) Magnetic Gap Depth 10.5 (0.4) mm (in) Flux Density 1.15 T
Thiele & Small Parameters Fs 42 Hz Re 6.1 Ohm Qes 0.22 Qms 3.8 Qts 0.2 Vas 75 (2.6) dm3 (ft3) Sd 522 (80.9) cm2 (in2) Eta Zero 2.4 % Xmax +/- 7 mm Xvar +/- 9 mm Mms 74 g Bl 23.5 Txm Le 2 mH
Mounting and Shipping Info Overall Diameter 316 mm (12.4 in) Bolt Circle Diameter 296 mm (11.6 in) Baffle Cutout Diameter 282 mm (11.1 in) Depth 140 mm (5.5 in) Flange and Gasket Thickness 16 mm (5/8 in) Net Weight 7.6 kg (16.7 lb) Shipping Weight 8.4 kg (18.5 lb) Shipping Box 340x340x170 mm (13.4x13.4x6.7 in) 1For different impedances, please ask. 22 hours test made with continuous pink noise signal (6 dB crest factor). Power calculated on rated minimum impedance. 3Power on Continuous Program is defined as 3 dB greater than the Nominal rating. 4Applied RMS Voltage is set to 2.83V for 8 ohms Nominal Impedance.
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