Page 1
www.beyma.com
15CMV2
LOW & MID FREQUENCY TRANSDUCER
Preliminary Data Sheet
KEY FEATURES
● High power handling: 700 W program power
● 3” copper wire voice coil
● High sensitivity: 97 dB (1W / 1m)
● Extremely linear response and low distortion.
● Treated double roll cloth surround
● Optimized pressed steel frame
● Ferrite magnet
● Designed for bass and midbass applications in
small vented cabinets
TECHNICAL SPECIFICATIONS
Nominal diameter
Rated impedance
Minimum impedance
Power capacity*
Program power
Sensitivity
Frequency range
Recom. enclosure
(Bass-reflex design)
Voice coil diameter
Bl factor
Moving mass
Voice coil length
Air gap height
X
damage
Notes:
* The power capaticty is determined according to AES2-1984 (r2003) standard. Program power is defined as the transducer’s ability to handle normal music program material.
** 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).
*** The X
(peak to peak)
is calculated as (Lvc - Hag)/2 + (Hag/3,5), where Lvc is the voice coil length and Hag is the air gap height.
max
380 mm 15 in
8 Ω
7,5 Ω
350 W
AES
700 W
97 dB 1W / 1m @ ZN
40 - 4.000 Hz
Vb = 90 l
Fb = 40 Hz
76,2 mm 3 in
18,8 N/A
0,104 kg
17,5 mm
7 mm
35 mm
Resonant frequency, f
D.C. Voice coil resistance, R
Mechanical Quality Factor, Q
Electrical Quality Factor, Q
Total Quality Factor, Q
Equivalent Air Volume to Cms, V
Mechanical Compliance, C
Mechanical Resistance, R
Efficiency, η0
Effective Surface Area, S
Maximum Displacement, X
Displacement Volume, V
Voice Coil Inductance, Le @ 1 kHz
THIELE-SMALL PARAMETERS**
s
e
ms
es
ts
as
ms
ms
d
***
max
d
172 µm / N
37 Hz
188 l
4,4 kg / s
2,3 %
0,088 m
7 mm
616 cm
1,3 mH
6 Ω
5,6
0,42
0,39
2
3
Acústica Beyma SL - P.I. Moncada II, C/ Pont Sec, 1C - 46113 Moncada, Valencia (Spain) - Tel. +34 96 130 13 75 - beyma@beyma.com
Page 2
www.beyma.com
15CMV2
LOW & MID FREQUENCY TRANSDUCER
Preliminary Data Sheet
[dB]
Note: Frequency response measured with loudspeaker standing
MOUNTING INFORMATION
Overall diameter
Bolt circle diameter
on infinite baffle in anechoic chamber, 1W @ 1m
385 mm 15,1 in
367 mm 14,4 in
[Ω]
[Hz]
Frequency response on axis
Frequency response 45º off axis
DIMENSION DRAWING
Baffle cutout diameter:
- Front mount
Depth
Net weight
Shipping weight
Acústica Beyma SL - P.I. Moncada II, C/ Pont Sec, 1C - 46113 Moncada, Valencia (Spain) - Tel. +34 96 130 13 75 - beyma@beyma.com
353 mm 13,9 in
165 mm 6,5 in
6 kg 13,2 lb
7 kg 15,4 lb
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