Instructions

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)
380 mm 15 in
8 Ω
7,2 Ω
400 W
AES
800 W
98 dB 1W / 1m @ Z
N
35 - 3.000 Hz
V
b
= 75 l
F
b
= 48 Hz
76,2 mm 3 in
17,4 N/A
0,086 kg
17,5 mm
7 mm
30 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
35 Hz
6,4 Ω
8,5
0,40
0,38
267 l
243 µm / N
2,2 kg / s
2,7 %
0,088 m
2
7,25 mm
638 cm
3
1,2 mH
SM-115/N
LOW FREQUENCY TRANSDUCER
● High sensitivity: 98 dB
● High power handling: 400 W
AES
● 3” copper voice coil
● Optimum winding length for increased linear excursion
KEY FEATURES
Acústica Beyma SL - P.I. Moncada II, C/ Pont Sec, 1C - 46113 Moncada, Valencia (Spain) - Tel. [phone] - [e-mail]
● Extremely linear frequency response
● Extended response in the medium frequency range
● Low harmonic distortion
● High power woofer and midbass applications
SM Series