AER combi-SUB 12 User manual
1
combi-SUB 12/15
User Manual
preliminary
2
User manual
Contents Page
1. Introduction 3
2. Important safety instructions 4
3. Controls and connections
5
4. Starting up 6
4.1 Cabling and switching on 6
4.2 Level adjustment 6
5. Technical data 7
6. Block diagram 8
1. Introduction
Welcome to B!
Thank you for choosing an AER combi-SUB.
AER oers two combi-SUBS 12 and 15 which are
alike in their concept but dier in size, power and
application.
While the combi-SUB 12 is mainly used as
subwoofer (low frequency extension) to an AER amp
no matter if Compact 60, Domino or AP1 the
combi-SUB 15 is additional well suitable as subwoo-
fers to form a sound reenforcement system with
AER AS 281. (Ref. info sheet)
Rugged cabinets with heavy duty speakers, power
amps with high dynamic range and a control section
with adjustable cross-over and notch lter make the
combi-SUB very versatile.
AER quality and sound guaranteed.
4
2. Important Safety Instructions
The following guidelines shall help minimize the risk of injury through re or electric shock.
1. Carefully read these safety notes before you
use the device!
2. Keep these safety notes in a safe place.
3. Pay attention to all warnings, instructions and
additional texts on the unit.
4. This device was only designed for operation
under normal climatic conditions (temperate
climate).
5. Do not install or use your amp in close proximi-
ty to water or if you are wet yourself.
6. Do not subject your device to sudden and
severe temperature changes. This could cause
moisture condensation inside the unit, which
could damage it. In the event of moisture
condensation allow the device to dry out com-
pletely before use.
7. Use your amp in a safe place where nobody can
step on cables or trip over and damage them.
8. Pay attention to an unhindered air circulation
around the amp, never obstruct the air vents or
grilles.
9. Always pull the mains plug before cleaning
your amp or when left unused for a long period
of time. Use only a dry cloth for cleaning. Avoid
the use of detergents and do not let any liquids
seep into the unit.
10. Use only the right fuses with the same current
rating and trigger characteristic as replace-
ments. Never mend fuses! Pull the mains plug
before replacing a fuse. Should a fuse blow
again after a short while, the device needs to
be checked.
11. Never install your amp close to devices with
strong electromagnetic elds such as large
mains transformers, revolving machines, neon
illumination etc. Do not lay signal cables paral-
lel to power current cables.
12. There are no user-serviceable components
inside the unit. To avoid the risk of an electric
shock, the unit must not be opened. All mainte-
nance, adjustment and repair works should be
carried out by qualied sta only. Any unautho-
rized tampering will void the 2-year warranty.
13. In keeping with the EMV regulations screened
cables with correctly tted connectors must be
used for all signal connections.
14. Always use an earthed power supply with the
correct mains voltage. If you are in doubt about
the power outlet ground, have it checked by a
qualied technician.
15. Cable up your amp only when it is powered o.
16. This device should be installed near the socket
outlet and disconnection of the device should
be easily accessible. The mains plug of the
power supply shall remain readily operable.
Protect the power cord from being walked on
or pinched particularly at plugs, convenience
receptacles and the point where they exit from
the apparatus.
17. This product may cause permanent hearing
loss. Do not operate for long periods of time
at a high volume level or at any level that is
uncomfortable. If you experience any hearing
loss or ringing in the ears, you should consult
an audiologist.
18. The product should be located away from heat
sources such as radiators, heat registers or
other products that produce heat.
19. Do not place any open sources of re, like
candles, on the device.
20. Care should be taken so that objects do not fall
onto the device and liquids are not spilled into
the enclosure through openings. Ensure that
no objects lled with liquids, such as vases, are
placed on the device.
21. Do not place this device on an unstable
cart, stand, tripod, bracket or table. The
device may fall, causing serious injury
to you and serious damage to the
device itself.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
ATTENTION
RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR
The lightning ash with
the arrow head symbol
within an equilateral
triangle is intended to alert the
user to the presence of unisolated
´dangerous voltage´ within this
product´s enclosure that may
be of sucient magnitude to
constitute a risk of electric shock
to persons.
The exclamation point
within an equilateral
triangle is intended to
alert the user to the presence
of important operating and
maintenance (servicing)
instructions in the literature
accompanying this product.
5
3. Controls and connections
Rear (from left to right)
1gnd lift Signal ground/protective ground
disconnecting switch
to avoid hum loops
2input Signal input, combi socket, for
6.3 mm mono jack plugs and
XLR connector (female)
2a link Signal link,
symmetrical, XLR-socket
(to connect any other unit)
2b clip Overload indicator
2c level (gain) Level control to
adjust the gain level
3crossover Adjustable low-pass-lter
(100 - 300 Hz)
4notch Switch to turn the notch-lter
o/on
5notch freq. Range from 50-300 Hz.
Notch lter subjects frequencies
of a certain frequency-range (here
50 and 300Hz) to severe reduction
(-14 dB) in a very narrow bandwidth
(quality 2). This helps to reduce
feedback and other annoying
resonances.
6phase Switch to invert the phase
norm. (normal)
inv (inverted)
power section
7power on/o-status indicator
8a combi-SUB 12:
power on/o switch with mains
socket and fuse holder
8b combi-SUB 15:
powercon mains in/out ,
power on/o switch and fuse holder
(ref. to technical data: mains fuse)
combi-SUB 15
combi-SUB 12
2
1
2a
2b 345
2c
6
8b
8a mains in power on
fuse
mains out
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6
4. Starting up
4.1 Cabling and switching on
Connect your line-out or premaster-out signal of
your source (amp, desk)
to the input of the
comb-SUB.
The relevant specs
and safety symbols are
printed on the rear side
of the unit.
Make sure crossover position is at 100Hz (left turn),
notch lter is in o position (button stands out)
and phase switch is in normal position button
stands out).
4.2 Level adjustment
By setting the level correctly we mean the signal
level in one or several devices in a signal chain is
neither too high nor too low. This applies equally
to all circuits in a complete circuit design (EQs,
preamps etc.)
Consequently, care must be taken that no part of
the circuit is overloaded or that distortion is unin-
tentionally added to the signal.
We have carefully designed the circuit to achieve
this objective whilst also providing controls for
’manual’ intervention.
As soon as you raise the gain level the combi-SUB
will be heard. It oers a wide range of features to
enhance and dene low-end and avoid feedback:
ground-lift, adjustable crossover, notch-lter and
phase-inversion.
A) combi-SUB 12 and 15
as extension to an amp:
A line-out signal is unltered and full range. This
is why you can adjust the range the combi-SUB
covers individually to adjust the amount of bass and
midrange the combi-SUB should add.
The phase switch inverts the signal phase by 180°.
Make sure your amp and the combi-SUB are in
phase, than you will hear the low frequencies full
and strong.
According to the overall volume you desire you
may encounter resonance/feedback problems that
can be actively addressed by making use of the
Notch Filter. Witch it on and identify the resonance
frequency by turning the frequency potentiometer.
B) combi-Sub 15
as subwoofer to AS 281:
Besides the above
You may use a 2.1 setup:
Two AS 281 plus one combi-SUB 15
- connect your left and right signal from your source
(desk) to left and right AS 281 inputs and one AS
281 link out to feed the signal to the combi-SUB 15.
In case you have a full 2.2 setup:
Two AS 281 and 2 combi-Subs
- connect left and right to the sub left and right and
feed the signal through to the AS 281.
Make use of phase, crossover and notch lter as
explained above.
As a small , easy-to-use PA solution it is
ideal for small clubs, jazz and acoustic
concerts and art events.
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5. Technical data
4. Technical data
Input connections
input
Electronically balanced line input
Unbalanced jack connection also possible
Combo socket, XLR + jack ¼” (6.35 mm)
Nominal input voltage: 1 V (0 dBV)
Min. input voltage:
Combi Sub 12: 360 mV (–9 dBV)
Combi Sub 15: 400 mV (–8 dBV)
Max. input voltage: 9 V (+19 dBV)
Input impedance: 20 k
Equivalent input noise voltage (A-weighted):
6.5 µV (–104 dBV)
link
XLR output, directly connected to input
clip
indicator
Headroom 6 dB
Active crossover
Filter type
Butterworth lowpass, 12 dB/oct.
Crossover
frequency
Adjustable, 70 –200 Hz
Notch filter
Notch
frequency
Adjustable, 50 –300 Hz
Notch
attenuation
-14 dB
Bandwidth
0.7 octaves between –6.5 dB points
Notes
Switchable
Power
Power amp
Combi Sub 12: 200 W / 8 (1% THD)
Combi Sub 15: 250 W / 8 (1% THD)
Discrete bipolar transistor output
Residual noise (A-weighted):
260 µV (–72 dBV)
Dynamic range (A-weighted):
104 dB
Mains power
Mains voltage (depending on model):
100, 120, 230, or 240 V AC, 50–60 Hz
Power consumption:
Combi Sub 12: max. 500 W
Combi Sub 15: max. 600 W
Mains fuse
Size: 5 x 20 mm
Rating:
For 230 and 240 V models: T 3.15 A L / 250 V
For 100 and 120 V models: T 6.3 A L / 250 V
General
Distortion
(electrical)
THD + N < 0.1 % at 25 W / 8
Signal
processing
Subsonic filter, RMS limiter
Limiter
threshold
Combi Sub 12: 160 W / 8
Combi Sub 15: 220 W / 8
Speaker
system
Combi Sub 12: 300 mm (12”) woofer
Combi Sub 15: 380 mm (15”) woofer
Bass reflex enclosure
Cabinet
18 mm (0.71“) birch plywood
M20 thread for speaker stand on top side
Finish
Waterbased acrylic, black spatter finish
Dimensions and weight
Dimensions
Combi Sub 12:
430 mm (16,92“) high
490 mm (19,29“) wide
350 mm (13,77“) deep
Combi Sub 15:
490 mm (19.29“) high
560 mm (22.05“) wide
440 mm (17.32“) deep
Weight
Combi Sub 12: 19,55 kg (43,1 lbs)
Combi Sub 15: 29 kg (64 lbs)
NOTES
Rated conditions:
Input signal: 100 Hz sine, nominal input voltage applied
Crossover (frequency) control fully clockwise.
Notch filter off.
Level adjusted such that the rated output power is obtained
if the limiter is disabled (Level in center position
approximately).
Signal voltages stated as RMS values.
0 dBV corresponds to 1 V RMS.
Min. input voltage: Input voltage required for rated output
power (without limiter) with level fully clockwise
Max. input voltage: Input voltage that does not cause more
than 1% THD+N, suitable control settings provided
THD + N: Total harmonic distortion + noise, with input and
output levels 10 dB below rated conditions.
Equivalent input noise voltage: Noise voltage at speaker
output divided by gain of amplifier at 100 Hz. Control
settings as stated under rated conditions. Measurement
range: 20 Hz –20 kHz. Input shorted.
Residual noise: Output noise when the level control is set to
minimum.
Dynamic range: Ratio of nominal output voltage to residual
noise voltage
Specifications and appearance subject to change without
notice.
TD20130827
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6. Block diagram
B130827_130827
INPUT
LINK
GAIN CROSSOVER
FREQ.
NOTCH
FREQ.
OFF/ON
SUBSONIC LIMITER POWER AMP SPEAKER
CLIP DETECTION
CLIP
1
2
3
1
2
3
TR
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www.aer-amps.com
02092013
20131007
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