12CX
12CX
PROFESIONAL LOUDSPEAKERS
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KEY FEATURES
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Considerable power handling: 100 w AES (low frequencies)
and 15 w AES (high frequencies)
Combination of a 12" bass loudspeaker and a compression
tweeter
L.F. unit: 2" (52 mm) copper voice coil
H.F. unit: 1" (25.8 mm) copper voice coil
Aluminium diaphragm tweeter
The concentric mounting reduces phasing problems in the
crossover region
Linear and coherent response
GENERAL DESCRIPTION
This dual loudspeaker includes, in a single unit, a 12” bass driver and a concentrically mounted compression tweeter.
This provides a single point source and reduces phasing problems in the crossover region. The bass driver features a
2” (52 mm) voice coil diameter, attached to a lightweight curvilinear cone, and shows a smoothly extended frequency
response up to 7 kHz. The tweeter has excellent efficiency and fast response to transient attacks.
FREQUENCY RESPONSE AND DISTORTION CURVES
FREQUENCY RESPONSE AND DISTORTION CURVES, L.F. UNIT
Note: on axis frequency response measured with loundspeaker standing
on infinite baffle in anechoic chamber, 1w @ 1m.
PREDICTED LOW FREQUENCY RESPONSE
Note: Bass-reflex cabinet, Vb=50 I, fb=50 Hz
FREQUENCY RESPONSE AND DISTORTION CURVES, H.F. UNIT
12CX
12CX
PROFESIONAL LOUDSPEAKERS
Coaxial
TECHNICAL SPECIFICATIONS
DIMENSION DRAWINGS
L.F. UNIT
Nominal diameter
300 mm. 12 in.
Rated impedance
8 ohms.
Minimum impedance
7.8 ohms.
Power capacity*
100 w AES
Program Power
200 w
Sensitivity
104 dB 2.83v @ 1m @ 2␲
Frequency range
45-7000 Hz
Recom. enclosure vol.
30 / 100 l 1.06 / 3.53 ft.3
Voice coil diameter
52 mm. 2 in.
Magnetic assembly weight
3.85 kg. 8.5 lb.
BL factor
13 N/A
Moving mass
0.039 kg.
Voice coil length
11 mm.
Air gap height
7 mm.
X damage
16 mm.
H.F. UNIT
Rated impedance
Minimum impedance
Power capacity
Frequency range
Sensitivity 1w @ 1m
Voice coil diameter
Flux density
BL factor
Dispersion
MATERIALS
8 ohms.
8.2 ohms. @ 7kHz
15 w AES
3500 - 20000 Hz
154 dB
25.8 mm. 1 in.
1.45 T
4 N/A
90°
THIELE-SMALL PARAMETERS**
Resonant Frequency, fs
D.C. Voice Coil Resistance, Re
Mechanical Quality Factor, Qms
Electrical Quality Factor, Qes
Total Quality Factor, Qts
Equivalent Air Volume to Cms, Vas
Mechanical Compliance, Cms
Mechanical Resistance, Rms
Efficiency, ηo (%)
Effective Surface Area, Sd (m2)
Maximum Displacement, Xmax
Displacement Volume, Vd
Voice Coil Inductance, Le@ 1kHz
42 Hz
6.22 ohms.
3.5
0.38
0.34
146.4 l
373 µm/N
2.91 kg/s
2.65
0.053 m2
2 mm.
106 cm.3
0.7 mH
Notes:
* The power capacity is determined according to AES2-1984 (r2003)
standard. Program power is defined as the transducer's ability to handle
normal music program material.
L.F. UNIT
Basket: Die cast aluminium
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Cone: Paper
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Surround: Plasticised cloth
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Voice coil: Copper
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Magnet: Ferrite
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H.F. UNIT
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Diaphragm: Aluminium
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Voice coil: Copper
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Voice coil former: Kapton
MOUNTING INFORMATION
Overall diameter
Bolt circle diameter
Baffle cutout diameter:
-Front mount
-Rear mount
Depth
Volume displaced by driver
Net weight
Shipping weight
320 mm. 12.6 in.
299 mm. 11.77 in.
282 mm. 11.10 in.
280 mm. 11.02 in.
157 mm. 6.18 in.
5.5 l 0.16 ft.3
5.26 kg. 11.57 lb.
5.9 kg.
13 lb.
** T-S parameters are measured after an exercise period using a
preconditioning power test. The measurements are carried out with a
velocity-current laser transducer and will reflect the long term parameters
(once the loudspeaker has been working for a short period of time).
acústica beyma, s.a.
Polígono Industrial Moncada II . C/. Pont Sec, 1c . 46113 MONCADA - Valencia (Spain)
. Tel. (34) 96 130 13 75 . Fax (34) 96 130 15 07 . http://www.beyma.com . E-mail: beyma@beyma.com .
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