Devine EQ Series User manual

EQ series (EQ-15X2 Pro, EQ-31X2, EQ-31X2 Pro)
Graphic equalizer
User manual
The information in this user manual is subject to change at any time without notice.
Version: 1.0 Date of creation and author's initials:23-09-2017 RV Revision date and author's initials: -

In roduc ion
Thank you for purchasing this Devine EQ series equalizer. We advise that you read this user manual in its
entirety before unpacking the contents of the box so that you are familiar with all of the functionality that this
product has to offer. Please be sure to check that all of the parts and accessories listed below under 'box
contents' are included in the package. In the event that the product does not function properly or if you have
any issues while operating it please remove the plug from the power socket and contact your dealer for
assistance.
Box con en s:
– Devine EQ series equalizer (EQ-15X2 Pro EQ-31X2 or EQ-31X2 Pro)
– power cable IEC C13 to Schuko
Please inspec he device and he included accessories.
Should you discover that either the device or one or more of the included parts have been damaged or
rendered defective while in transit please contact your dealer directly.
Please note that the pictures in this user manual serve illustrative purposes only and may differ from the
product you receive.
Con ac :
Devine Pro Audio Products
Verrijn Stuartweg 18
4462 GE Goes
The Netherlands
Please do not send any products to this correspondence address.
Should you wish to send in a product for repair or for a refund, please contact your dealer for an RMA
Return Merchandise Authorisation).
The information in this user manual is subject to change at any time without notice.
Version: 1.0 Date of creation and author's initials:23-09-2017 RV Revision date and author's initials: -

Safe y ins ruc ions
Everyone involved with the installation operation and maintenance of this device must:
- Be qualified
- Be skilled
- Have read the instructions in this user manual
- Be sure that neither the device nor the included accessories are damaged. Should the device or the
included accessories be damaged please contact your dealer for more information.
- Ensure that the device is in good working condition and is safe to operate. Please follow the advice and
instructions as they are described in this user manual.
Damage caused by misuse and/or modifications made to the device are not covered by the warranty.
This device does not contain any parts that need to be repaired or replaced by the user. Should maintenance
or repairs be necessary they must be handled by a qualified technician.
Impor an informa ion regarding heal h and safe y:
- Do not remove any labels or stickers from this device.
- Do not leave any cables lying around.
- The device should not be opened up and any hardware or software that may be present should not be
modified.
- To achieve optimal performance inputs on this device should not be fed with a signal higher than
necessary.
- The device should only be used indoors; contact with water rain and moisture should always be avoided.
Do not place any objects containing liquids on top of the device.
- Remove the device from any nearby flames or heat sources; do not place it near flammable liquids gasses
or objects.
- Disconnect this device from the power supply if it will not be used for a longer period of time if maintenance
is necessary or if the device needs to be cleaned.
- Do not pull on the cable to remove a connector as this could cause damage.
- Do not use any cables other than the ones described in this manual. Do not use defective cables. Please
contact your dealer if the included or necessary cables do not function properly with this device.
- Only use this device with power from a grounded power source.
- In the event that the device is exposed to extreme temperature changes (e.g. transported through a cold
outdoor environment into a warm indoor environment) it should not be turned on until it has reached room
temperature. This is necessary to prevent moisture from forming in the device which could lead to electric
shocks.
Guidelines and opera ion of his device:
- This device is intended for adult use only.
- This device is not suitable for use by children and should always be operated by an adult.
- This device may only be used in a suitable environment where no damage to the device can occur. Do not
use the device in moist or dusty environments such as:
- indoor swimming pools where chlorine is used
- beaches where there is sand and salt
- outdoors
- indoors in spaces where intense heat sources are present or where it reaches temperature levels
that would be considered uncomfortable for a person
- Avoid impacts and collisions during use and transport. Do not transport the device while it is in use. Avoid
using excessive force when installing and operating the device.
- The user should become familiar with the functions of this device before using it.
- The user should be able to stop the devices's power supply in case of emergencies. At least one of the
following should therefore be accessible at all times:
The information in this user manual is subject to change at any time without notice.
Version: 1.0 Date of creation and author's initials:23-09-2017 RV Revision date and author's initials: -
WARNING!
Keep his device away from mois ure, wa er and rain o avoid he chance of elec ric shocks.

- the on/off switch on the back of the unit (if present)
- the power cable connector on the back of the unit
- the power socket the cable is plugged in to
- the power socket switch or extension cable switch
- Should the device not be used in the manner described in this user manual damages or even injuries could
occur. Devine cannot be held responsible for any injuries or damages that occur as a result of improper use
of this product.
S orage and ranspor :
- This product is designed for mobile use. It can be transported separately as long as it’s well-protected
against shocks and collisions.
- This device is not designed for permanent (24/7) use. The expected lifespan of the device will not be
affected by occasionally turning the device off. Disconnect the device or turn off the power when it is not
actively in use.
- If the device will not be used for a longer period of time it should be disconnected and stored in a dust-free
environment.
- Do not expose the device to extreme temperature differences.
Housing
- Inspect the device's housing frequently and always just before use. Avoid operating the device if there are
large dents or cracks or if screws are missing. Do not use the device if the housing is not in good condition.
Contact your dealer or a qualified technician if you are unsure about the state of the device.
- Check the device and the screws for corrosion. Corrosion must not be present on this device. Contact your
dealer or a qualified technician if you find any corrosion on the screws.
Every power and signal connector should be securely mounted. Do not use the device if the connectors are
not secure.
Avoid dust and dirt build-up. Clean the device once a month by disconnecting it from the power supply and
wiping it down with a dry or slightly moist cloth. If the device is used frequently the cleaning intervals should
increase.
Symbol explana ion:
WEEE: Ensure that this device is disposed of properly. This product falls under the WEEE
(Waste Electrical and Electronic Equipment) directive. The requirements of this directive apply
to all manufacturers and producers of electronic devices in the EU. Do not throw this product
away with regular rubbish. Please contact your local authority for more information about how
to recycle and dispose of these products in your region. By recycling this product in the proper
manner we can work together to ensure that we can continue to enjoy these kinds of
products and still protect the environment as much as possible from pollution.
CE: The CE logo indicates that this product meets the European norms and requirements to
which it must legally conform.
Only sui able for indoor use: this product was only designed for indoor use. The maximum
environmental temperature must not exceed 40 degrees Celsius (104 degrees Fahrenheit).
The information in this user manual is subject to change at any time without notice.
Version: 1.0 Date of creation and author's initials:23-09-2017 RV Revision date and author's initials: -

Guidelines and opera ion of he device
Devine's EQ series is equipped with lots of practical features to get the best out of your speaker system. On
this page you can see the possibilities offered on the front of each model and on the next page the back of
each unit is shown. They appear in the following order: EQ-15X2, EQ-31X2, EQ-31X2 Pro
The following list provides an overview of the different
functions. Be aware that all of these functions are not
available on every device.
1. Rotary gain
2. LED VU meter for output signal
3. CLIP LED
4. EQ Bypass
5. Low cut on/off
6. Range +/- 6/12 (+/- 6/15 on 31X2 PRO)
7. equalizer frequency slider
The information in this user manual is subject to change at any time without notice.
Version: 1.0 Date of creation and author's initials:23-09-2017 RV Revision date and author's initials: -
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1. power input
2. balanced 3-pin XLR output channel 2
3. balanced TRS jack output channel 2
4. balanced TRS jack input channel 2
5. balanced 3-pin XLR input channel 2
6. balanced 3-pin XLR output channel 1
7. balanced TRS jack output channel 1
8. balanced TRS jack input channel 1
9. balanced 3-pin XLR input channel 1
10. power switch
11. strip terminals channel 1
12. strip terminals channel 2
EQ-15X2
EQ-31X2
EQ-31X2 Pro
The information in this user manual is subject to change at any time without notice.
Version: 1.0 Date of creation and author's initials:23-09-2017 RV Revision date and author's initials: -
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Opera ing he device
Wha is an equalizer?
An equalizer is a device used to manipulate the sound balance of an audio source. It is typically used to
adjust the audio signal from a sound source like a mixer or DJ controller for optimal sound reproduction by
the speaker system.
Because speakers do not reproduce sounds with 100% accuracy or neutrality and the surrounding
environment also affects the overall sound quality the ability to manipulate certain frequencies can improve
the sound. An equalizer allows you to accurately adjust the sound and tweak it to your preferences.
An equalizer is normally connected directly to the main sound source. In addition to equipment like mixers
and DJ controllers they can also be used with things like computers tablets and MP3 players among
others.
How does an equalizer work?
An equalizer is equipped with different slide controls that each affect a different part of the audible frequency
spectrum. Normally the frequency range goes from 20 to 20 000 Hz and each slider controls a different
frequency range which can vary depending on the total number of controls. Often there are 15 or 31 sliders.
Each slide control is essentially a filter that manipulates the pre-determined frequency range as well as just
below and above the indicated values. It should be noted that from a technical perspective it's virtually
impossible to manipulate the frequencies to an exact number.
Unfortunately, equalizers don't work this way.
In practice therefore the indicated frequency refers to the peak of the curcve which flows off in both
directions. The further below or above the peak a frequency is the less it is affected.
The strength of an equalizer can also be controlled. Normally you can choose between +/- 6 dB although it's
sometimes possible change the range to something like +/- 12 dB.
This means that you can control the volume of each frequency band separately by cutting or boosting its
signal by 12 dB for instance.
By doing this you are lowering or raising a threshold or even creating a dip in your frequency spectrum.
The effect of an equalizer on an audio signal can be compared to driving a car on a road. The smoother the
road the smoother the ride. Bigger bumps and holes will have a bigger effect on the ride in the same way
that more extreme equalizer settings will have a more extreme affect on the sound.
The information in this user manual is subject to change at any time without notice.
Version: 1.0 Date of creation and author's initials:23-09-2017 RV Revision date and author's initials: -

What are the ideal settings?
An equalizer is no an amplifier
When the control for a specific frequency range is turned up (above 0) that part of the signal is given a slight
boost or in other words is lightly amplified. Because an equalizer is not designed to be an amplifier however
it actually makes more sense to dampen other frequencies instead so that they are less prominent.
In this way the equalizer is used more as a limiter which doesn't distort the sound or negatively affect the
dynamics. Listen well to the sound and try to figure out which frequencies are lacking. You can then adjust
other frequencies until the one that's too low becomes more prominent. This gives you a better sound overall
than amplifying certain frequencies.
To summarise: if a device is not an amplifier don't use it as one.
In practice however making small adjustments is unlikely to be detrimental to the overall sound and in
certain situations it may be necessary to quickly boost a frequency to improve the quality of the sound.
No a bass boos er
Equalizers are commonly used to give smaller speakers more low end. This can best be achieved by cutting
some other frequencies (as described above). It can also be done by boosting the low frequencies
themselves but this can be detrimental to the overall sound quality.
You should also be aware of the fact that most small speakers aren't designed to reproduce prominent low
tones especially when they're built to handle a full range of frequencies.
At lower volume levels these types of speakers probably won't be damaged but at higher volume levels the
effect will be more pronounced which can result in audible distortion and possible damage to the speakers.
Many amplifiers are also not designed to handle high levels of low frequencies as a huge amount of power is
needed to amplify them properly. This means that the limit of your amplifier is likely to be reached much more
quickly.
In most situations using a separate subwoofer is the best solution. Contact your retailer if you need more
advice about this.
Slide con rols
The EQ series equalizers are equipped with sliders that can be used to adjust certain frequency ranges. The
greater the number of controls the more accurately the sound can be adjusted.
Func ionali y
The functionality of each equalizer model is different which is why we have specified them separately.
Gain
The gain control is a type of volume knob that can be used to adjust the level of the input signal. In an ideal
situation the signal being sent out will be at the right level (not too quiet or too loud) when the value is set to
0 dB. In these situations it can be left in this position. Adjustments may need to made depending on the
settings of the various frequency slide controls however.
The information in this user manual is subject to change at any time without notice.
Version: 1.0 Date of creation and author's initials:23-09-2017 RV Revision date and author's initials: -

In the event that you need to turn up the gain control in order to get a sufficient signal level it's worth
checking the output volume of the sound source first.
In the event that you need to turn down the gain control in order to prevent the sound from distorting it's
worth checking the output volume of the sound source first.
In practice adjusting the gain signal by small amounts will not be detrimental to the overall signal quality.
Clip LED
This indicator lights up to show a heavily-distorted input signal. The LED will come on as soon as the signal
is just 3 dB below the point of distortion and the closer the signal is to the distortion point the more static the
LED indicator will become. Ideally you want to adjust the gain control the sliders and the volume control to
prevent the Clip LED from coming on at all.
EQ Bypass
The EQ bypass is a function that instantly overrides the settings of the slide controls. Other functions like the
low cut filter the gain control and the level meters are unaffected by the EQ bypass function.
Low cu
All of the equalizers have a low cut filter that can be turned on or off as required. A low cut filter removes low
tones that are barely reproduced by normal speakers leaving more room for the other frequencies.
The low cut filter starts at 50 Hz and dampens the lower frequencies by 12 dB / octave. If you're using a
subwoofer as part of your setup it is not recommended to use the low cut filter.
Ou pu level LED
These LEDs indicate the strength of the output signal which ideally should not exceed the level of 0 dB. This
'ideal' level can be identified when only the 0 dB LED lights up and the +10 and +18 dB LEDs are not
illuminated. If the other LEDs light up it's recommended to turn down the gain control to prevent distortion.
Range
The Range switch can be used to instantly lower or raise the level of all the slide controls simultaneously.
Using a low range gives you a more accurate slide control adjustment. In order to make bigger adjustments
however a bigger range should be used. The range of each channel on the equalizer can be adjusted
separately.
The EQ-15X2 Pro and EQ-31X2 have a range switch that gives settings of either +/- 6 or +/- 12. When the
LED on the switch is illuminated the +/- 12 dB mode is active.
The EQ-31X2 Pro has a range switch that gives adjustable settings from +/- 6 to +/- 15. Each setting has a
separate LED indicator that clearly shows the selected range.
Housing
The EQ series equalizers can all be mounted in front or top-loading 19-inch racks or flight cases.
The equalizers take up either 1 2 or 3 units of rack height space. Each device is equipped with rack ears
that have pre-drilled holes for easy mounting. Rackware is not included as this can be different depending on
the rack or case you have.
Inpu s and ou pu s
The EQ series equalizers are equipped with various inputs and outputs. As standard they have balanced
XLR and balanced TRS jack inputs and outputs.
The PRO versions are equipped with gold-plated connectors and the EQ-31X2 Pro also has screw terminals
for direct wire connections. This is ideal for rack mounting and installations because the ground connector is
then connected to the power supply and housing via a metal strip. It's recommended to leave this setup as it
is unless it causes interference in the audio signal. By removing the metal strip the earthing connection
between the audio signal and the power supply / housing will be broken (ground lift). This will also be the
case if you use connectors other than the screw terminals. When connecting wires via the screw terminals
The information in this user manual is subject to change at any time without notice.
Version: 1.0 Date of creation and author's initials:23-09-2017 RV Revision date and author's initials: -

the contacts should be fitted with ferrules and/or cable lugs.
Because the inputs and outputs are connected to each other it's possible to use a type 1 connector for the
input and another type of connector for the output.
It's even possible to use the inputs and outputs as a sort of splitter where 1 pair of inputs and outputs is used
with other equipment. So long as the sound is not split more than once this is unlikely to have a noticeably
detrimental effect on the sound quality.
Whenever possible the XLR connectors on the device should be used as these are the most robust and the
most reliable. This is especially true when multiple inputs and outputs are being used.
User applica ions
Generally speaking equalizers like this are used in the following situations:
- o manipula e sound sys ems (speaker se s in live or s udio applica ions)
Here an equalizer is used to give the sound a certain character. This can be done simply to accommodate
the preferences of the listener or to eliminate acoustic problems.
- preven microphone feedback loops
The Devine EQ equalizers are equipped with separate inputs and outputs that are independent of each
other. This means the 2 channels can be used for stereo as well as dual mono setups.
With microphones an EQ can be used via your mixer as an insert in your signal chain that comes after the
microphone amplification allowing for further signal processing.
Things like speaker positioning (of PAs and monitors) and differences in microphone sensitivity can cause
certain frequencies to create feedback loops. These will continue until the speaker and microphone are
adjusted or repositioned.
Dampening certain frequency bands on the equalizer can help to solve sound issues by ensuring that
problematic frequencies are not picked up by the microphone.
- manipula ing (floor or side) moni or sys ems
When a floor monitor is used to give a musician their own sound mix in order to hear surrounding musicians
it can be handy to filter out certain frequencies. Low frequencies for instance are often filtered out as these
travel further and tend to reach the musician from other sound sources anyway. The low-cut function is ideal
for this.
Pro ec ion during ranspor
Products in the Devine EQ series are suitable for mobile use but they should be adequately protected during
transport. They are not waterproof and caution is therefore advised if they are taken outside during rain or in
adverse weather conditions. If they are exposed to moisture in any form ensure that they are completely dry
again before use. Failure to do so may result in a short circuit which could cause permanent damage or
injury. Exposure to moisture can also cause visible or invisible corrosion which may cause damage in the
long term.
The information in this user manual is subject to change at any time without notice.
Version: 1.0 Date of creation and author's initials:23-09-2017 RV Revision date and author's initials: -

Solving equalizer problems
If you have a problem with your equalizer please consult this troubleshooting section for possible solutions.
If after consulting this section the problem remains unresolved please contact your dealer for more
information and/or help.
This troubleshooting section contains information on how to solve the most common equalizer problems but
it does not and cannot cover every eventuality. It is possible that you won't find your problem cause and
solution in this section due to differences between products.
Problem Possible cause Solu ion
Equalizer does not turn on with
mains power
Power LED doesn't light up If the equalizer is connected to an
active power socket the fuse has
been checked and the power
switch is ON but the power LED is
not lighting up there may be a
problem with equalizer itself. In
this case the equalizer should be
turned off again and you should
contact your dealer for assistance.
Problem with the power cable Check that the power cable is
plugged into an active power
socket and the equalizer properly.
Try using another cable of the
same type to determine if there's a
problem with the power cable and
if there is replace the faulty cable.
Equalizer doesn't switch on Check whether the switch on the
back of the equalizer is in the 'ON'
position. If it's connected to other
switches check that these are also
in the 'ON' position.
No sound via one of the inputs Cable not connected properly Check to see that the cable
between the audio source device
and the equalizer is connected
properly. A device always needs to
be connected to one of the
equalizer's inputs.
Incorrect settings on source device Check that the source device (e.g
a mixer) is sending out a signal
and that the appropriate channel
fader is set to the correct level.
No sound from the equalizer's
output
Input-related problem Check that the problem isn't
actually being caused by the input
issue above.
Red Clip Limiter LED lights up
often or continually
Volume is too high Lower the equalizer's volume by
using the gain controls or adjust
the settings of the audio source.
Prolonged exposure to distortion
can cause permanent damage to
your speaker system.
Distorted clipping crackling sound Source device is transmitting a
distorted signal
Check if any of the connected
source devices are transmitting a
distorted signal and turn down the
volume on the device if necessary.
The information in this user manual is subject to change at any time without notice.
Version: 1.0 Date of creation and author's initials:23-09-2017 RV Revision date and author's initials: -

Volume control is too loud Turn the volume down
The tone controls for certain
frequencies are too low or too high
Turn all the tone controls back to
12 o'clock and listen to see if
clipping is still audible.
Speaker or amplifier is faulty If a speaker or amplifier is exposed
to a loud distorted or clipped
signal for a longer period of time
this can cause permanent damage
to its internal components. If you
suspect that this is the case
contact your local dealer for
assistance.
Sound is dull The speaker's tweeter could be
faulty
Turn the speaker to an appropriate
volume (ensure that it's not too
loud) so that you can listen directly
to the tweeter close to your ear. If
the tweeter is not responding it is
probably defective and you should
contact your dealer for assistance.
EQ incorrectly set up (also for
overly sharp sound)
Check that one (or more) of the
EQ slide controls are not set too
high and if they are try returning
them to a more neutral position.
The information in this user manual is subject to change at any time without notice.
Version: 1.0 Date of creation and author's initials:23-09-2017 RV Revision date and author's initials: -

Specifica ions
General specifica ions for all models:
– suitable for manipulating the tone of a wide range of audio signals
– compact 19-inch 1U model to comprehensive 19-inch 3U model
– two-channel setup for dual mono or stereo use
– inputs and outputs with various connectors
– metal construction
– range switch (model specific)
– EQ bypass function (with retention of settings like gain low-cut etc.)
– low cut function works from 50 Hz and dampens the low frequencies by 12 dB / octave
– gain control operated by rotary knob
– LED VU meter shows output level
Technical specifica ions per model:
Model EQ-15X2 Pro EQ-31X2 EQ-31X2 Pro
Frequency bands 15 31 31
Frequency band
division
25 – 40 – 63 – 100 – 160
– 250 – 400 – 630 – 1k –
1.6k – 2.5k – 4k – 6.3k –
16k
20 – 25 – 31.5 – 40 – 50 – 63 – 80 – 100 – 125 –
160 – 200 – 250 – 315 – 400 – 500 – 630 – 830 – 1k
– 1.25k – 1.6k – 2k – 2.5k – 3.15k – 4k – 5k – 6.3k –
8k – 10k – 12.5k – 16k – 20k
Channels 2
Range swi ch +/- 6 and +/- 12 dB +/- 6 and +/- 15 dB
Clip LED indica or yes at -3 dB
Gain con rol Rotary knob
Low cu frequency 50 Hz 12 dB/oct
Frequency band fader
leng h
2.54 mm / 1-inch
with zero point
5.08 mm / 2-inch
with zero point
Ou pu dB VU me er -10 0 +10 +18 dB
Inpu s – TRS jack plug
– 3-pin XLR (locking)
– TRS jack plug
– 3-pin XLR
– TRS jack plug
– 3-pin XLR (locking)
– wire clamp screw
terminals
Ou pu s – TRS jack plug
– 3-pin XLR (locking)
– TRS jack plug
– 3-pin XLR
– TRS jack plug
– 3-pin XLR (locking)
– wire clamp screw
terminals
Size 19-inch 1 U 19-inch 2 U 19-inch 3 U
on/off swi ch none front panel rear
Opera ing vol age 230V AC 50 Hz
Power consump ion 12 W 15 W 24 W
Dimensions 483 x 44.5 x 150 mm 483 x 89 x 130 mm 483 x 133.5 x 200 mm
The information in this user manual is subject to change at any time without notice.
Version: 1.0 Date of creation and author's initials:23-09-2017 RV Revision date and author's initials: -