Beyma SM-115N User Manual

www.beyma.com

SM-115/N

LOW FREQUENCY TRANSDUCER

SM Series

KEY FEATURES

● High sensitivity: 98 dB

● High power handling: 400 W

AES

● 3” copper voice coil

● Optimum winding length for increased linear excursion

● Extremely linear frequency response

● Extended response in the medium frequency range

● Low harmonic distortion

● High power woofer and midbass applications

TECHNICAL SPECIFICATIONS

Nominal diameter
Rated impedance
Minimum impedance
Power capacity
Program power

1

2

Sensitivity
Frequency range
Recom. enclosure
(Bass-reflex design)
Voice coil diameter
Bl factor
Moving mass
Voice coil length
Air gap height
X

damage

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

(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

7,2 Ω

400 W

AES

800 W

98 dB 1W / 1m @ ZN

35 - 3.000 Hz

Vb = 75 l

Fb = 48 Hz

76,2 mm 3 in

17,4 N/A
0,086 kg

17,5 mm

7 mm

30 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, L

THIELE-SMALL PARAMETERS

s

e

ms

es

ts

as

ms

ms

d

4

max

d

e

3

35 Hz

6,4 Ω

0,40
0,38

267 l

243 µm / N

2,2 kg / s

2,7 %

0,088 m

7,25 mm

638 cm

1,2 mH

8,5

2

3

Acústica Beyma SL - P.I. Moncada II, C/ Pont Sec, 1C - 46113 Moncada, Valencia (Spain) - Tel. [phone] - [e-mail]

www.beyma.com

09/14

SM-115/N

LOW FREQUENCY TRANSDUCER

SM Series

[dB]

MOUNTING INFORMATION

Overall diameter

Bolt circle diameter

[Ω]

[Hz]

Note: Frequency response measured with loudspeaker standing

on infinite baffle in anechoic chamber, 1W @ 1m

DIMENSION DRAWING

388 mm 15,3 in

370 mm 14,6 in

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. [phone] - [e-mail]

352 mm 13,9 in

156 mm 6,1 in

6,5 kg 14,3 lb

7,4 kg 16,3 lb