Data Sheet

www.beyma.com
THIELE-SMALL PARAMETERS
3
Notes:
1
The power capaticty is determined according to AES2-1984 (r2003) standard.
2
Program power is defined as power capacity + 3 dB.
3
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).
4
The X
max
is calculated as (L
vc
- H
ag
)/2 + (H
ag
/3,5), where L
vc
is the voice coil length and H
ag
is the air gap height.
TECHNICAL SPECIFICATIONS
Nominal diameter
Rated impedance
Minimum impedance
Power capacity
1
Program power
2
Sensitivity
Frequency range
Recom. enclosure
(Bass-reflex design)
Voice coil diameter
Bl factor
Moving mass
Voice coil length
Air gap height
X
damage
(peak to peak)
300 mm 12 in
8 Ω
6,7 Ω
700 W
AES
1.400 W
100 dB 1W / 1m @ Z
N
50 - 4.000 Hz
V
b
= 40 l
F
b
= 72 Hz
101,6 mm 4 in
23,7 N/A
0,074 kg
20 mm
12 mm
52 mm
Resonant frequency, f
s
D.C. Voice coil resistance, R
e
Mechanical Quality Factor, Q
ms
Electrical Quality Factor, Q
es
Total Quality Factor, Q
ts
Equivalent Air Volume to C
ms
, V
as
Mechanical Compliance, C
ms
Mechanical Resistance, R
ms
Efficiency, η
0
Effective Surface Area, S
d
Maximum Displacement, X
max
4
Displacement Volume, V
d
Voice Coil Inductance, L
e
47 Hz
5 Ω
5,2
0,20
0,19
65 l
152 µm / N
4,2 kg / s
3,4 %
0,055 m
2
7,5 mm
412 cm
3
0,9 mH
12P80NdV2
LOW FREQUENCY TRANSDUCER
● 700 W
AES
power handling capacity
● High sensitivity: 100 dB (1W / 1m)
● Wide usable frequency range
● Low harmonic distortion
● Low power compression losses
KEY FEATURES
Acústica Beyma SL - P.I. Moncada II, C/ Pont Sec, 1C - 46113 Moncada, Valencia (Spain) - Tel. [phone] - [e-mail]
● Weatherproof cone with treatment for both sides
● 4” DUO double layer in/out aluminium voice coil
● Conex spider
● Extended controlled displacement: X
max
± 7,5 mm
● 52 mm peak-to-peak excursion before damage
P80 Series