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+12
8
4
2
MEQ-115/SW
0 dB
2
4
8
-12
Hz 25
25
40
63
100
160
15-Band Stereo Equalizer
These operating instructions are intended for
users with basic knowledge in audio technol-
ogy . Please read the instructions carefully prior
to operating the unit and keep them for later
reference .
1 Operating Elements
and Connections
1.1 Front Panel
1 Controls to boost and attenuate the re-
spective frequency band level
2 Buttons EQ with LEDs to activate the equal-
izer adjustments
Button pressed:
the adjustments for the
respective channel are
effective
Button released:
the respective channel
is by-passed
3 PEAK LED
4 Selector switches RANGE with LEDs for the
control ranges of the equalizer controls (1)
Button released:
control range ±6 dB
Button pressed:
control range ±12 dB
5 Subsonic filters On / Off (Low Cut) 20 Hz /
–3 dB with LEDs
Button pressed:
Filter switched on
Button released:
Filter switched off
6 Controls LEVEL for the input levels
7 POWER switch
1.2 Rear Panel
8 Mains cable for the connection to 230 V/
50 Hz
9 Groundlift switch to separate the signal
ground from the housing ground to avoid
ground loops
Position LIFT : Separation of signal ground
and housing ground
Position GND: Connection of signal ground
and housing ground
10 Unbalanced inputs via RCA jacks
11 Unbalanced outputs via RCA jacks
12 Balanced outputs via 6 .3 mm jacks
13 Balanced outputs via XLR jacks
14 Balanced inputs via 6 .3 mm jacks
15 Balanced inputs via XLR jacks
6
+12
ON
8
4
2
0 dB
2
4
8
-12
EQ
250
400
630
1 k
1.6 k
2.5 k
4 k
6.3 k
10 k
16 k
Channel 1
+12
8
4
2
0 dB
2
4
8
-12
Hz 25 25
40
63
100
160
250
400
2 Safety Notes
This unit corresponds to all required directives
of the EU and is therefore marked with
WARNING This unit uses dangerous mains
•
Caution! Extensive boosting of the fre-
quency band levels, especially in the bass
and tweeter ranges, may quickly overload
and damage the speakers .
•
The unit is suitable for indoor use only . Pro-
tect it against dripping water and splash
water, high humidity and heat (ambient
temperature range 0 – 40 °C) .
•
Do not place any vessels filled with liquid,
e . g . drinking glasses, on the unit .
•
Do not operate the unit and immediately
disconnect the mains plug from the mains if:
1 . there is visible damage to the unit or the
mains cable,
2 . a defect might have occurred after a drop
or similar accident,
3 . there are malfunctions .
The unit must in any case be repaired by
skilled personnel .
•
A damaged mains cable must only be re-
paired by skilled personnel .
•
Never pull the mains cable to disconnect the
mains plug from the mains socket, always
seize the plug .
•
For cleaning only use a dry, soft cloth; never
use water or chemicals .
•
No guarantee claims for the unit and no li-
ability for any resulting personal damage or
material damage will be accepted if the unit
is used for other purposes than originally
intended, if it is not correctly connected or
operated, or if it is not repaired in an expert
way .
•
Important for U. K. Customers!
The wires in this mains lead are coloured in
accord-ance with the following code:
blue = neutral
brown = live
As the colours of the wires in the mains lead
of this appliance may not correspond with
the coloured markings identifying the termi-
nals in your plug, proceed as follows:
CH A
PEAK
+6
+12
±12 dB ±6 dB
ON
5
8
4
4
2
2
0 dB
0 dB
2
2
4
4
8
8
-∞
-12
RANGE L-CUT
LEVEL
Hz 25
25
40
63
100
160
250
630
1 k
1.6 k
2.5 k
4 k
6.3 k
10 k
1
voltage . Leave servicing to
skilled personnel only and do
not insert anything into the air
vents . Inexpert handling may
result in electric shock .
PEAK
+12
ON
±12 dB ±6 dB
8
4
2
0 dB
2
4
8
-12
EQ
RANGE L-CUT
400
630
1 k
1.6 k
2.5 k
4 k
6.3 k
10 k
16 k
Channel 2
CH A
PEAK
+12
+6
8
ON
±12 dB
±6 dB
ON
5
4
4
2
2
0 dB
0 dB
2
2
4
4
8
8
-12
-∞
EQ
RANGE L-CUT
LEVEL
16 k
2 3
4
5
6
1 . The wire which is coloured blue must
be connected to the terminal which is
marked with the letter N or coloured
.
black .
2 . The wire which is coloured brown must
be connected to the terminal which is
marked with the letter L or coloured red .
If the unit is to be put out of oper-
ation definitively, take it to a local
recycling plant for a disposal which
is not harmful to the environment .
3 Applications
The equalizer MEQ-115 / SW is mainly designed
to match a HiFi system to the room acoustics .
For this, two channels with 15 controls each
are provided to boost and attenuate frequency
band levels in the range between 25 Hz and
16 kHz . The range of the controls can be se-
lected: ±6 dB or ±12 dB . Offering various ad-
justment options, the equalizer MEQ-115 / SW
can also be used for other frequency response
adjustments of units with line level .
4 Installation
The equalizer is designed for installation into
a rack (482 mm / 19"), but may also be used as
a tabletop unit or placed into a shelving unit /
wall system . For rack installation, a height of
1 rack space (= 44 .5 mm) is required
5 Connection
The equalizer can be inserted as required, e . g .
between preamplifier and power amplifier,
between mixer and power amplifier or into
an effect way of a mixer .
Separate inputs and outputs are provided
for the channels 1 and 2 . In order to make
sure that the channels are not mixed up in
stereo mode, it is recommended to always use
channel 1 for the left channel and channel 2
for the right channel .
5.1 Inputs
The input signal should have line level . The
XLR jacks (15), the 6 .3 mm jacks (14) or the
RCA jacks (10) can be used as input for each
channel . The XLR jacks and 6 .3 mm jacks are
balanced; however, they can also be used for
unbalanced connections: Connect the pins 1
and 3 at the XLR plug or connect the con-
tacts for "GND" (ground) and signal "–" at
the 6 .3 mm plug .
CH B
ON
+6
ON
5
4
2
0 dB
2
4
8
-∞
LEVEL
POWER
➀
7
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