Eminence BETA-12A-2 User Manual

American S tandard seri es

BETA-12A-2

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
Nominal Impedance*
Power Rating**
Watts
Music Program
Resonance
Usable Frequency Range
Sensitivity***
Magnet Weight
Gap Height
Voice Coil Diameter

12.0”, 305 mm

43 Hz – 3.8 kHz

.312”, 7.9 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

8 Ω

250 W
500 W

47 Hz

98.0 dB
38 oz.

2.0”, 51 mm

THIELE & SMALL PARAMETERS

Fs
Re
Le
Qms
Qes
Qts
Vas
Vd
Cms
BL
Mms
EBP
Xmax
Sd
Xlim

4.24 cu.ft., 120.10 liters

*

47 Hz

5.00 Ω

0.64 mH

6.00

0.50

0.46

237.0 cc

0.29 mm/N

10.80 T-M
40 grams

94

4.40 mm

538.9 cm2

11.0 mm

FREQUENCY RESPONSE & IMPEDANCE CURVE

dBSPL

105

100

95

90

SPL vs Freq

MOUNTING INFORMATION

Recommended Enclosure Volume
Sealed

Vented

Driver Volume Displaced
Overall Diameter
Baffle Hole Diameter
Front Sealing Gasket
Rear Sealing Gasket
Mounting Holes Diameter
Mounting Holes B.C.D.
Depth
Net Weight
Shipping Weight

*

0.071 cu.ft., 2.00 liters

25.50–35.40 liters,

0.90–1.25 cu.ft.

36.80–139.00 liters,

1.30–4.90 cu.ft.

12.03’’, 305.6 mm

11.07’’, 281.2 mm
Yes
Yes

0.25’’, 6.4 mm

11.59’’, 294.4 mm

4.57”, 116.1 mm

7.50 lbs , 3.40 kg

9.70 lbs , 4.40 kg

Ohm

90

80

70

60

50

40

30

LEARN MOR E AT EMI NEN CE. COM

85

80

75

70

65

20 Hz 50 100 200 500 1K 2K 5K 10K 20K

41: Beta-12A-2 SPLZ

s Map

20

10

9

8

7

6

5