Active Audio SB115 User manual
User Manual
SB115
User manual –SB115
DOP_1156_A 2sur 13 02-2020
User manual –SB115
DOP_1156_A 3sur 13 02-2020
Contents
1. Introduction................................................................................................................................................... 4
2. Requirements and installation..................................................................................................................... 5
3. Wiring ............................................................................................................................................................. 6
4. Recommended equalization.................................................................................................................. 7
4.1 Excursion limitation ................................................................................................................................... 8
5. Technical data ............................................................................................................................................. 9
5.1 Mechanical drawings............................................................................................................................ 10
6. Warranty ...................................................................................................................................................... 11
7. Troubleshooting .......................................................................................................................................... 11
8. Declaration of conformity ......................................................................................................................... 12
User manual –SB115
DOP_1156_A 4sur 13 02-2020
1. Introduction
The SB115 subwoofer is designed to extend the bass response of column loudspeakers Step-
Array. It is passive, has no filter, and therefore requires filtering upstream of the amplifier
SB115 is very compact and can be positioned both horizontally and vertically for optimal
visual integration.
The high-end 15-inch loudspeaker is loaded with an enclosure operating in interactive dual
volume mode. It achieves a remarkably low cut-off in a small volume, while yielding sharp
and dynamic sound.
The SB115 subwoofer can be used for background and foreground music, audiovisual
programs, small live, in :
-Meeting and conference rooms
-Amphitheaters
-Places of worship
-…
User manual –SB115
DOP_1156_A 5sur 13 02-2020
2. Requirements and installation
We recommended that the SB115 be positioned far enough away from the audience, so
that the sound coverage is uniform over the entire audience. The distance separating the
SB115 from the closest listeners must be greater than the reverberation distance. Thus,
practically speaking, the SB115 must be placed at least 3 meters from the closest
audience members.
In terms of maximum sound level, the SB115 is designed to be aligned Step-Array column
loudspeakers. To maximize the power of the column loudspeakers, we recommend:
-As many SB115 as there are SA180, SA250, R210
-1 SB115 for 2 SA100 or 2 R110
When several SB115 are used to deliver the same signal, theoretically 3dB efficiency and
SPL may be gained by positioning them together (e.g. side by side or one on top of the
other). The maximum sound level obtained with two adjacent SB115s will then be 6dB
greater than that obtained with a single SB115. On the other hand, the sound coverage
may be more uniform if they are distributed around the room.
The SB115 can be placed horizontally on the floor, or vertically against a wall.
User manual –SB115
DOP_1156_A 6sur 13 02-2020
3. Wiring
For SB115, use 2 x 1,5mm² cable when the distance between the amplifier and the SB115
is less than 50m: 2 x 2,5mm² for greater distances.
The SB115 connector can be used to connect several subwoofers in daisy chain
configuration as shown in figure 2. This naturally presupposes that a suitable amplifier is
used. Thus, for N subs connected to the amplifier a daisy chain configuration:
-In low impedance mode: the amplifier must withstand a load impedance of 8/N
Ohms and must deliver sufficient maximum power.
Figure 2: Connecting multiple SB115 in a daisy chain configuration
User manual –SB115
DOP_1156_A 7sur 13 02-2020
4. Recommended equalization
Table 1 gives the recommended equalization and crossover settings for the SB115 used
with Step-Array column loudspeakers. The corresponding response curves are given in
figure 3.
SB115
HPF freq (Hz)
40.3
HPF shape (dB/oct)
But18
LPF freq (Hz)
160
LPF shape (dB/oct)
LR24
Gain OEM (dB)
6
DA Gain OEM
0
EQ1 freq (Hz)
44
EQ1 width (Oct)
0.479
EQ1 gain (dB)
6
Tableau 1: Recommended equalization when using the SB115 with Step-Array
loudspeakers
Figure 3: curves corresponding to the equalization in Table 1 (in blue, right-hand scale);
response curve of the SB115 in ½ spaces with this equalization (in red, left-hand scale)
User manual –SB115
DOP_1156_A 8sur 13 02-2020
4.1 Excursion limitation
High-amplitude signals with very low frequencies cause large membrane
excursion. Excessive excursion causes harmonic distortion, which degrades
the sound quality and causes a risk of damage to the loudspeaker.
It is desirable to limit the amplitude of the deflections either by reducing the amplitude of
the applied signal or by placing a high pass filter upstream of the amplifier, for example, a
second order Butterworth at 80Hz.
User manual –SB115
DOP_1156_A 9sur 13 02-2020
5. Technical data
Acoustical
SB115
Loudspeaker
15’’ neodyme
Load type
Interactive dual chamber
Long-term power1
1100W
Sensitivity2
100dB SPL / 1W / 1m
Low-cut frequency2
High-cut frequency2
40Hz at -10dB, 43Hz at -3dB
215Hz at -10dB, 180Hz at -3dB
Directivity
Omnidirectional
Max continuous sound level at 1m3
142dB SPL
Nominal impedance
8Ω
Recommended amplifier
1100W to 2000W depending on max SPL
Filtering
Equalization and connection
5 x 2nd order cells
Physical
Dimensions
580 x 575 x 395mm
Volume
38,7 litres
Net / shipping weight
33.0kg / 34.0kg
Colour
White (RAL9016), Black (RAL9005)
Matte finish
Connection
Speakon
1: As per EN60268-5, with recommended EQ.
2: With continuous pink noise, crossover at 180Hz and recommended EQ.
3: Noise as per EN60268-1, voltage corresponding to the long-term power, with
recommended EQ.
User manual –SB115
DOP_1156_A 10 sur 13 02-2020
5.1 Mechanical drawings
General and front views
Top view
Back view
User manual –SB115
DOP_1156_A 11 sur 13 02-2020
6. Warranty
The SB115 has a 5-year warranty, in accordance with the General Conditions of Sale.
Malfunction problems must be reported to the manufacturer prior to any return.
7. Troubleshooting
Symptom
Possible causes
Solution
The product does not emit
any sound
Connector incorrectly wired
No signal is sent
Check the connection
Check the source and the amplifier
The sound is distorted
Excessive membrane
excursion
Decrease the bass level by
decreasing the gain and/or adding
a high-pass filter (see above
“Equalization”)
Presence of unwanted
vibrations
Objects are vibrating in the
room due to the effect of
low frequencies emitted by
the SB115
Identify and secure the objects that
are vibrating
User manual –SB115
DOP_1156_A 12 sur 13 02-2020
8. Declaration of conformity
We,
ACTIVE AUDIO SAS,
332 Boulevard Marcel Paul 44800 St Herblain, France,
Declares under our sole responsibility that the following products
SB115,
complie with the council directive 2004/108/CE
Assessment of compliance is based on the following standards: EN50081-1, EN61000, EN60065
Established on the 1st of June 2017
by Régis CAZIN, CEO.
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