| Content | 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
- BL Product (BL) 10.8 T-M
- Diaphragm Mass inc. Airload (Mms) 40 grams
- Efficiency Bandwidth Product (EBP) 94
- Maximum Linear Excursion (Xmax) 4.4 mm
- Surface Area of Cone (Sd) 538.9 cm²
- Maximum Mechanical Limit (Xlim) 11 mm
MOUNTING Information
- Recommended Enclosure Volume
Sealed 25.5-35.4 liters, 0.9-1.25 cu.ft.
Vented 36.8-139 liters/1.3-4.9 cu.ft.
- Overall Diameter 12.03", 305.5 mm
- Baffle Hole Diameter 10.95", 278.1 mm
- Front Sealing Gasket standard fitted as standard
- Rear Sealing Gasket standard fitted as standard
- Mounting Holes Diameter 0.25", 6.4 mm
- Mounting Holes B.C.D. 11.59", 294.3 mm
- Depth 4.57", 116 mm
MATERIALS of Construction
- Copper voice coil
- Polyimide former
- Ferrite magnet
- Vented and extended core
- Pressed steel basket
- Paper Cone
- Cloth cone edge
- Solid composition paper dust cap
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- Neodymium Coaxial Transducer
- 98 dB Sensitivity 1 W / 1 m
- 500 W + 80 W Power Handling
- 3" Copper Sandwich Voice Coil
- Triple Aluminum demodulating Rings
- Elliptical 80° x 60° Waveguide for precise directivity
- Single Point Source providing coherent Wave Front
- Very high SPL, superb Quaity Sound
- Optimal for compact 2-way Systems
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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. | DELTA-12A Standard American
Recommended for professional audio as a mid-bass or woofer (with high-pass filter) in vented enclosures.
*Good replacement for Yamaha 12″ JAY51200 (1216301A), JAY51100, JAY5120, JAY5110 woofers.
Or Loudspeakers C112V, SM12V, BR12, BR12M, S112V, S112IV, SM121V, SV12, SV12M & more
SPECIFICATION
- Nominal Basket Diameter 12“, 304.8 mm
- Nominal Impedance 8 ohms
- Power Rating Watts 400 W / Music Program 800 W
- Resonance 55 Hz
- Usable Frequency Range 54 Hz - 5 kHz
- Sensitivity 98.3
- Magnet Weight 56 oz.
- Gap Height 0.375“, 9.53 mm
- Voice Coil Diameter 2.5“, 63.5 mm
THIELE & Small Parameters
- Resonant Frequency (fs) 55 Hz
- DC Resistance (Re) 6.3
- Coil Inductance (Le) 0.74 mH
- Mechanical Q (Qms) 5.27
- Electromagnetic Q (Qes) 0.46
- Total Q (Qts) 0.43
- Compliance Equivalent Volume 81.3 liters (Vas) 81.3 liters / 2.9 cu. ft.
- Peak Diaphragm Displacement Volume 125 cc
- Mechanical Compliance of Suspension 0.21 mm/N
- BL Product (BL) 13.5 T-M
- Diaphragm Mass inc. Airload (Mms) 39 grams
- Efficiency Bandwidth Product (EBP) 120
- Maximum Linear Excursion (Xmax) 2.4 mm
- Surface Area of Cone (Sd) 519.5 cm²
- Maximum Mechanical Limit (Xlim) 9.9 mm
MOUNTING Information
- Recommended Enclosure Volume
Sealed N/A
Vented 25.5-85 liters/0.9-3 cu.ft.
- Overall Diameter 12.03“, 305.5 mm
- Baffle Hole Diameter 10.95“, 278.1 mm
- Front Sealing Gasket fitted as standard
- Rear Sealing Gasket fitted as standard
- Mounting Holes Diameter 0.25“, 6.4 mm
- Mounting Holes B.C.D. 11.59“, 294.3 mm
- Depth 5.35“, 136 mm
MATERIALS of Construction
- Aluminum voice coil
- Polyimide former
- Ferrite magnet
- Vented core
- Pressed steel basket
- Paper Cone
- Cloth cone edge
- Solid composition felt dust cap
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- 98 dB sensitivity 1 W / 1 m
- 500 W + 80 W Power Handling
- 3" Copper Sandwich voice Coil
- Triple Aluminum Demodulating Rings
- Single Point Source providing coherent Wave Front
- Very high SPL, superb Quality Sound
- Optimal for compact 2-way Systems
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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
Nominal Diameter
304.8 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
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
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
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
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