Page 1
www.beyma.com
8CMV2
LOW & MID FREQUENCY TRANSDUCER
Preliminary Data Sheet
KEY FEATURES
● High power handling: 500 W program power
● 1.5” CCAW wire voice coil
● High sensitivity: 94 dB (1W / 1m)
● Very linear extended response and low distortion
● Treated double roll cloth surround
● Optimized pressed steel frame
● Ferrite magnet
● Designed for bass and midbass applications in
compact 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
200 mm 8 in
8 Ω
6,4 Ω
250 W
AES
500 W
94 dB 1W / 1m @ ZN
80 - 8.000 Hz
Vb = 20 l
Fb = 74 Hz
38,1 mm 1,5 in
9,6 N/A
0,021 kg
14 mm
6 mm
29 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
213 µm / N
75 Hz
5,1 Ω
14,6 l
1,3 kg / s
1,1 %
0,022 m
5,7 mm
125 cm
0,6 mH
7,7
0,55
0,52
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
8CMV2
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,
210 mm 8,3 in
196 mm 7,7 in
1W @ 1m
[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
180 mm 7,1 in
92 mm 3,6 in
2,4 kg 5,3 lb
2,6 kg 5,7 lb
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