Eminence Beta 12 Cx Specification
American Standard series
BETA-12CX
Recommended for professional audio as
a mid-bass in either vented, or sealed
satellite or floor monitor enclosures.
Also works nicely in vented two-way
enclosures used for small coverage areas.
The data for this coaxial woofer was calculated with the ASD:1001 driver screwed into the woofer, but not active.
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
57 Hz – 4.6 kHz
.312”, 7.9 mm
MaterialS of conStruction
Copper voice coil
Kapton former
Ferrite magnet
Tapered Coax
Pressed steel basket
Paper cone
Cloth cone edge
Screened cloth dust cap
8 Ω
250 W
500 W
47 Hz
97.3 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
4.27 cu.ft., 120.94 liters
*
47 Hz
5.42 Ω
0.64 mH
5.64
0.52
0.48
188.6 cc
0.30 mm/N
10.79 T-M
38 grams
90
3.50 mm
538.9 cm2
10.4 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
26.90–70.79 liters,
0.95–2.50 cu.ft.
32.85–158.58 liters,
1.16–5.60 cu.ft.
12.03’’, 305.6 mm
11.07’’, 281.2 mm
Yes
Yes
0.25’’, 6.4 mm
11.59’’, 294.4 mm
4.47”, 113.5 mm
7.80 lbs , 3.54 kg
10.00 lbs , 4.54 kg
Ohm
90
80
70
60
50
40
30
learn more at eminence.com
85
80
75
70
65
20 Hz 50 100 200 500 1K 2K 5K 10K 20K
58: Beta12CX for Catalog Updated 2012
Drivers connected to normal output, tweeter reverse polarity Connecting tweeter to hp cap, leaving L-pad in circuit
sMap
20
10
9
8
7
6
From design and manufacturing to the stage or studio. Once you’ve
experienced the performance of Eminence, you’ll never accept
anything else.
mission statement
footnotes
Eminence is dedicated to providing the best Quality, Value and Service
to meet our customers’ needs.
* Please consult www.eminence.com for specifications of models with alternative
impedances.
** Multiple units exceed published ratings evaluated under EIA 426A specification while
tested in a free-air, non-temperature-controlled environment.
*** The average output across the usable frequency range when applying 1W/1m into the
nominal impedance. i.e: 2.83V/8Ω, 4V/16Ω. 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/baffle | 2 ft. x 2 ft. baffle is built into the wall with
the speaker mounted flush against a steel ring for minimum diffraction | Carver PM-120
amplifier | 2700 cu. ft. chamber with fiberglass on all six surfaces (three with custommade wedges).
**** BETA 8CX, 10CX, and 12CX are coaxial speakers with tweeter sold separately. Published
usable frequency response contingent upon use of ASD:1001 HF Driver.
***** Multiple units exceeded published ratings evaluated under EIA-426A or AES specification
while mounted on Eminence’s H290, H290S, or H2EA horn in a non-temperaturecontrolled environment.
******The average on axis output across the entire usable frequency range when applying
1W/1m into the nominal impedance, i.e. 2.83V/8Ω, 4V/16Ω. 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/baffle | 2ft x 2ft baffle is built
into the wall with horn front mounted | Carver PM-120 amplifier | 2700 cu.ft. chamber
with fiberglass on all six surfaces (three with custom-made wedges).
Prices, specifications and product cosmetics are subject to change without notice.
eminence speaker llc
838 Mulberry Pike, Eminence, KY 40019
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