Data Sheet

The Art and Science of Sound
BETA-12CX American Standard Series
Recommended for professional audio as a mid-bass in either vented, or sealed satellite or oor monitor enclosures.
Also works nicely in vented two-way enclosures used for small coverage areas.
Please inquire about alternative impedances.
Multiple units exceed published rating evaluated under EIA 426A noise source and test standard while in a free-air, nontemperature-controlled environment.
The average output across the usable frequency range when applying 1W/1m into the nominal impedance. Ie: 2.83 V/8 ohms, 4 V/16 ohms.
Eminence response curves are measured under the following conditions: All speakers are tested at 1W/1m using a variety of test set-ups for the appropriate impedance | LMS using 0.25” supplied microphone (software
calibrated) mounted 1m from wall/bafe | 2 ft. X 2 ft. bafe is built into the wall with the speaker mounted ush against a steel ring for minimum diffraction | Haer P1500 Trans-Nova amplier | 2700 cu.ft. chamber with
berglass on all six surfaces (three with custom-made wedges)
*
**
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Nominal Basket Diameter
Nominal Impedance*
Power Rating**
Watts
Music Program
Resonance
Usable Frequency Range***
Sensitivity
Magnet Weight
Gap Height
Voice Coil Diameter
12”, 304.8mm
8 ohms
250W
500W
43Hz
66Hz-20kHz*
96.7
38 oz
0.312”, 7.92mm
2”, 50.8mm
Specication
Resonant Frequency (fs)
DC Resistance (Re)
Coil Inductance (Le)
Mechanical Q (Qms)
Electromagnetic Q (Qes)
Total Q (Qts)
Compliance Equivalent Volume (Vas)
Peak Diaphragm Displacement Volume (Vd)
Mechanical Compliance of Suspension (Cms)
BL Product (BL)
Diaphragm Mass inc. Airload (Mms)
Efciency Bandwidth Product (EBP)
Maximum Linear Excursion (Xmax)
Surface Area of Cone (Sd)
Maximum Mechanical Limit (Xlim)
43Hz
5.57
1.01mH
6.69
0.51
0.48
161 ltr/5.7 cu. ft.
186cc
0.40mm/N
10.0 T-M
34 grams
84
3.5mm
532.4cm
2
10.4mm
Thiele & Small Parameters
Recommended Enclosure Volume
Sealed
Vented
Overall Diameter
Bafe Hole Diameter
Front Sealing Gasket
Rear Sealing Gasket
Mounting Holes Diameter
Mounting Holes B.C.D.
Depth
Net Weight
Shipping Weight
42.5-28 ltr/1-1.5 cu. ft.
37-71 ltr/1.3-2.5 cu. ft.
12.03”, 305.5mm
10.95”, 278.1mm
Fitted as Standard
Fitted as Standard
0.25”, 6.4mm
11.59”, 294.3mm
4.47”, 114mm
7.8 lbs, 3.5 kg
10 lbs, 4.5 kg
Mounting Information
Materials of Construction
Coil Construction
Coil
Magnet Composition
Core Details
Basket Materials
Cone Composition
Cone Edge Composition
Dust Cap Composition
Copper
Polyimide
Ferrite
Extended
Pressed Steel
Paper
Cloth
Screened Cloth