Operation Manual
LYD Series
Dynaudio LYD Series
Operation manual
Personal Reference Monitor
Table of contents
Important safety information
Positioning the speakers
Connecting the speakers
Adjusting the volume
DSP settings
Listening tests
Final tweaks
Dynaudio LYD Series
Personal Reference Monitor
Welcome and congratulations on your purchase of Dynaudio Personal
Dynaudio meter app
Dynaudio has created an iOS app that contains
a source of pink noise, SPL meter, and RTA
spectrum analyzer. This app is designed to assist
you in positioning and calibrating your speaker
system in the listening room.
Reference Monitors. Each loudspeaker is constructed by Dynaudio
in Denmark to meet very high standards. The speakers are only one
part of your monitoring system. Speakers work together with how
they are placed in the room to create a playback system that delivers
Other resources
Please also visit our web site
accurate sound reproduction.
You will find additional information including:
In this manual you will find information on how
best to position both the speakers and listener
to get the best performance from your Dynaudio
loudspeakers. When your speakers are properly
setup and the rear panel settings are optimized,
your mixes will translate better to other playback
systems including home theaters, car stereos,
and headphones.
Things you will need
Tape Measure
White String
Dynaudio Meter app for iOS devices
Questions and answers about Dynaudio products
and technical information
Dynaudio events and news
Figure 1: Dynaudio Personal Reference Monitors
Dynaudio LYD Series
Personal Reference Monitor
The lightning flash with an arrowhead symbol
within an equilateral triangle, is intended to alert
the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that
may be of sufficient 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 the
To reduce the risk of fire or electrical shock, do not
expose this equipment to dripping or splashing
and ensure that no objects filled with liquids, such
as vases, are placed on the equipment
This apparatus must be earthed.
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
9. Do not defeat the safety purpose of
the polarized or grounding-type plug. A
polarized plug has two blades with one
wider than the other. A grounding type
plug has two blades and a third grounding prong. The wide blade or the third
prong are provided for your safety. If the
provided plug does not fit into your outlet,
consult an electrician for replacement of
the obsolete outlet.
6. Clean only with dry cloth.
7. Install in accordance with the manufacturer’s instructions.
10. Protect the power cord from being
walked on or pinched particularly at plugs,
convenience receptacles, and the point
where they exit from the apparatus.
8. Do not install near any heat sources
such as radiators, heat registers, stoves,
or other apparatus (including amplifiers)
that produce heat.
11. Only use attachments/accessories
specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the
manufacturer. When a cart is used, use
caution when moving the cart/apparatus
combination to avoid injury from tip- over.
13. Unplug this apparatus during lightning
storms or when unused for long periods
of time.
14. Refer all servicing to qualified service
personnel. Servicing is required when
the apparatus has been damaged in any
way, such as powersupply cord or plug
is damaged, liquid has been spilled or
objects have fallen into the apparatus, the
apparatus has been exposed to rain or
moisture, does not operate normally, or
has been dropped.
Use a three wire grounding type line cord like the
one supplied with the product.
Be advised that different operating voltages
require the use of different types of line cord
and attachment plugs.
Always observe the local safety regulations.
Ensure that the factory-set power requirements
for the device (refer to the label on the back of
the monitor) corresponds to the mains supply
in your region.
This equipment should be installed near the
socket outlet and disconnection of the device
should be easily accessible.
To completely disconnect from AC mains, disconnect the power supply cord from the AC
Important safety information
The mains plug of the power supply shall remain
readily operable.
Do not install in a confined space.
Do not open the unit – risk of electric shock inside.
You are cautioned that any change or modifications not expressly approved in this manual could
void your authority to operate this equipment
with the instructions, may cause harmful interference to radio communications. However, there
is no guarantee that interference will not occur
in a particular installation. If the equipment does
cause harmful interference to radio or television
reception, which can be determined by turning
the equipment off an on, the user is encouraged
to try to correct the interference by one or more
of the following measures.
Reorient or relocate the receiving antenna.
There are no user-serviceable parts inside.
Increase the separation between the equipment
and receiver.
All service must be performed by qualified personnel.
Connect the equipment into an outlet on a circuit
different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV
technician for help.
This equipment has been tested and found to
comply with the limits for a Class B Digital device,
pursuant to part 15 of the FCC rules.
These limits are designed to provide reasonable
protection against harmful interference in residential installations. This equipment generates,
uses and can radiate radio frequency energy
and, if not in- stalled and used in accordance
For customers in Canada:
This Class B digital apparatus complies with
Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
Dynaudio LYD Series
Personal Reference Monitor
Product overview
The backplate
The transducers of your Dynaudio LYD speaker will achieve better
sound quality after breaking in. Especially after the first hours of use,
you may notice a significant advance in sound quality, and further
subtle improvements in subsequent hours of use.
The LYD speaker range features an integrated Class-D amplifier with analog inputs. All connections
and settings are available on the backplate of the amplifier. Please do not remove the amplifier yourself.
In case of service contact your Dynaudio dealer.
1.Power ON/OFF switch 2.AC power Input (100-230V)
3.Balanced analog input (XLR) 4.Unbalanced analog input (RCA) 5.Standby Mode switch – Turns auto-standby ON/OFF
6.Sensitivity switch – Changes max. input voltage
7.Bass Extension switch – Changes cut-off frequency of the speaker
8.Sound Balance switch – Switches between three tilt filter settings
9.Position switch – Turns boundary effect filters ON/OFF
Dynaudio LYD Series
Personal Reference Monitor
Positioning the speakers
Figure 4:
Room diagram,
walls, and ceiling
Figure 5:
Speaker angle,
In order to get the best performance from your Dynaudio speakers,
care must be taken in positioning them in the listening environment. The
room greatly affects the sound so the position and angle of the speakers
relative to the walls, ceiling and floor is critical in any listening environment.
Acoustic axis
The acoustic axis is an imaginary line passing
through the center point on the speaker and
is used for positioning. This point, shown in
Figure 3, should be used for measuring the
distance and angle to the listener. The point is
positioned half the distance between the
boundary of the tweeter and the boundary of
the woofer or midrange driver. LYD 5, 7 & 8 are
designed to be positioned vertically and pointed
directly at the listener, while the LYD 48 is
designed to be used horizontally.
Figure 3 : The acoustic axis
Room boundaries
Each surface in the room constitutes a boundary
for sound; floor, walls, and ceiling. Room boundaries will reflect sound to one degree or another
depending on what their surface is made of;
hardwood, drywall, carpet etc. Placing speakers
very close to any boundary should be avoided.
The closer a speaker is to a room boundary, the
more anomalies there can be in the low frequency
response of the system. Placing a speaker close
to more than one boundary (e.g. in a corner)
creates even worse problems in many cases.
Sometimes this ideal positioning is not possible.
Limitations in space and other equipment or
furniture in the room will dictate some aspects of
the speaker position. The idea is to do the best
you can with the limitations you have.
Listening distance
The LYD 5,7 & 8 speakers are designed as near
field monitors. Near field monitors should be
placed relatively close to the listener, between 1
and 2 meters. LYD 48 can be used both as a near
or mid field monitor. The ideal listening distance
is between 1.5 and 2.5 meters.
Conversely, placing speakers exactly halfway
between room boundaries can over-excite fundamental standing waves in the room, making the
bass response less reliable. This also holds true
for the listening position. These room anomalies
are always present and good placement of the
speaker and listener will reduce their effect.
Speakers on the desk
These loudspeakers are designed to work well
in a variety of positions, even very close, placed
on the work surface in front of you. If they are
resting on a desk or console, they may be tilted
up to aim at ear level with great results.
A good rule of thumb is to place speakers somewhere between one quarter and one third of the
distance between room boundaries as shown in
Figure 4. Also, make sure the listening position is
not right in the center of the room if possible. In
larger rooms, this is less critical than in small rooms.
Speaker stands
If you need to place your speakers on stands
behind your work surface or computer screens
at a greater distance, it is recommended that you
use a subwoofer to augment the low frequency response. This will help the speaker system
achieve a reasonable volume without overdriving
the speakers.
Listening angle
To begin with, the speakers should be placed so
that the drivers are oriented vertically, with the
tweeter directly above the woofer. This orientation
ensures correct time alignment between the high
and low frequencies as they arrive at the listener.
Horizontal angle
The speakers should be placed so that they
create a 60 degree angle between the speakers, as shown in Figure 5. The easiest way to
accomplish this without measuring the angle,
is to create an equilateral triangle between the
speakers and the listener. In other words, the
distance between each speaker should equal
the distance from each speaker to the listener.
The LYD 48 can be positioned with the woofers
inside (recommended) or outside, depending
on how the equilateral triangle can be achieved
best. Make sure to take measurements from the
acoustic axis of the speaker.
Dynaudio LYD Series
An easy method to do this involves the tape
measure and string. With the tape measure, check
to see that the speakers are not placed further
away than 2 meters for the best response.
1. Once you have initially placed the speakers, take the string holding one end at the
speaker’s acoustic axis and stretch it out to the
listening position.
Personal Reference Monitor
Positioning the speakers
Vertical angle
The vertical angle of the speakers should orient the loudspeaker directly toward the listener’s
ear level. If the speaker is placed higher than the listener, they should be angled downward.
Conversely, if the speaker is below the listener’s ear level, they can be angled upward to point
at the ear as shown in Figure 6.
2. Mark this point with a marker.
3. Do this again for the other speaker to
ensure that they are both the exact same
distance from the listener.
4. Use the string to measure the distance between each speaker. This should also be the same, forming and equilateral triangle between the two speakers and the listener.
5. Make adjustments as necessary to place
the listener and speakers at the same distance
from each other
Figure 6: Listening angle vertical
Dynaudio LYD Series
Personal Reference Monitor
Audio signals
Ensure that you have the correct mains cable
for your region. The power supplies in the loudspeaker have switching inputs that automatically
detect the incoming voltage and will adjust to
either 120V or 220V, depending on your location.
There are two physical inputs you can choose:
Plug in the provided AC cable to the loudspeaker
and then to the outlet. Turn the speaker on to
ensure that they power up correctly by looking to
see that the power LED is lit on the back panel.
Once this is confirmed, turn the speakers off
before connecting audio signals.
The balanced XLR connection is preferable as it
can reduce noise and hum from the surroundings
but both connections can provide a high quality
input signal. Connect the outputs of your mixer,
audio interface or monitor controller to the loudspeaker inputs.
• RCA-type unbalanced
• XLR balanced or unbalanced
Standby mode
The loudspeakers have a standby mode that
helps conserve energy when they are not in use.
On – When set to ON, the speakers remain
powered on until the mains switch is turned off.
Before sending audio to the loudspeakers, set
the sensitivity to -6dB and adjust the outputs of
your mixer or audio interface to a low setting and
gradually turn up the signal until you get a reasonable volume. This will prevent any accidental
overload of the loudspeakers.
Connecting the speakers / Adjusting the volume
There is a three-position switch that adjusts the
input sensitivity for the loudspeaker.
Depending on the output level of your audio mixer,
interface, or monitor control system, you can
choose a setting that optimizes the gain staging
into the loudspeaker.
• +6dB = 0dBu /.775V max
• 0dB = +6dBu /1.5V max
• -6dB = +12dBu /3.1V max
If you are using a professional interface with a max
output of +20dBu or more, then a setting of -6dB
on the loudspeaker is the most appropriate. If you
are using equipment that runs at a consumer or
domestic output level (-10dBV nominal), then the
+6dB setting is better.
Auto – When set to AUTO, the speakers will
automatically enter a power-saving mode when
not in use that shuts down the amplifier section
until audio is detected at the input.
Dynaudio LYD Series
Personal Reference Monitor
Dynaudio engineers have painstakingly created a DSP controller
for these speakers that lets you tailor the sound to your particular
environment. The DSP settings provide precision adjustments that
optimize the speakers for the listening space.
DSP settings
Sound balance
The sound balance, or tilt filter, represents
a refined way to affect the overall tone of the
speaker. Depending on the room treatment
among other factors, it may be necessary to make
the loudspeaker darker or brighter than the normal
setting. A dead sounding room with a great deal
of treatment might need a brighter setting than a
live room with many reflective surfaces.
If you have positioned your speakers within 50cm
of a back wall boundary, the position switch should
be placed in the “Wall” setting. This will help with
anomalies created by reflections coming off the
back wall, especially in the lower frequencies. If
your speakers are placed further than 50cm from
any wall surface, use the “Free” setting.
Bass extension
• -10 Hz (greatest low frequency extension, -
5 dB output)
Low frequencies take an exponentially larger
amount of energy to reproduce than high frequencies. That is why the bass extension setting
affects how loud the speaker will respond.
• 0 Hz Sound Balance has three settings:
• +10 Hz (loudest output with least low frequency extension, +5 dB output)
• Bright (20 Hz -1,5dB, 20kHz +1,5dB)
At its lowest setting (-10 Hz), the low frequency range is extended by 10Hz. This will also
reduce the maximum volume that the speaker
can achieve. The default setting of 0 Hz limits the
range of low bass while increasing the maximum
volume of the loudspeaker. The +10 Hz setting
has the least amount of bass extension but the
loudest volume possible from the loudspeaker.
As most professional mixers tend to mix at rela-
• Neutral
tively low volumes (~70-85 dB SPL), the greatest
amount of bass extension (-10 Hz) can be used.
As you increase the playback volume, you may
need to reduce the amount of bass extension
in order to prevent overdriving the loudspeaker.
• Dark (20 Hz +1,5dB, 20 kHz -1,5 dB)
What this filter actually does is tilt the entire spectrum by 1,5 dB at either end using minimal phase
or linear phase filters to either brighten or darken
the overall response. This minimal filter alters the
tonality without inducing audible phase anomalies,
thereby maximizing the linearity of the loudspeaker.
Dynaudio LYD Series
Reference material
Personal Reference Monitor
Once you have your speakers properly positioned, its time to start
listening to them. Subjective listening tests can be made with reference
material that you are familiar with; a favorite album, movie or other
You may discover that a reflective surface is causing a high frequency
app or more sophisticated acoustic measurement system.
in the room.
• RTA Spectral Analyzer
Dynaudio has created an iOS app with these
tools built in so you can quickly test and calibrate
your LYD speakers using your iPhone, iPad or
iPod touch. In the Apple App Store, search for
“Dynaudio Meter” to locate and download this
free app.
Pink noise
For an objective test of the speaker’s response,
you will need a metering system. This consists
of a device that can measure the spectral output
of the loudspeaker in real time and a source of
pink noise that can be played back through the
Play the pink noise through one speaker at a time
at a reasonable level (~80-85dBA) and place the
iPhone or iPad at the listening position. Change
the Sound Balance filter to see how the response
changes the response curve in the RTA. Pink
noise is a balanced level of noise across the entire
spectrum. In the RTA display, the reading should
be as level and even as possible.
If you notice excessive levels in the low frequencies, try setting the Sound Balance filter to Bright
(B) and check the results. If the spectrum analyzer
shows a greater degree of high frequencies, set
the tilt filter to dark (D) and check the results.
Once you have the tilt filter set for the flattest
response curve in the RTA, return to your reference material to see how it sounds. Through
this process of objective tests with the RTA and
subjective listening tests with you ears, you will
arrive at the best setting for your Dynaudio loudspeakers.
First reflection treatment
Sound reflecting off of hard surfaces that are
close to the listening position can cause problems
in the high frequency response and imaging of
the loudspeakers. These first reflections can be
relatively easy to fix in many cases. Figure 7 shows
some common causes of first reflections in a
typical control room.
First reflections can be located easily by using a
mirror placed on various surfaces in the studio
to check if you can see either loudspeaker in
the mirror when sitting in the listening position.
If you can see either loudspeaker in the mirror, it
follows that upper frequencies will bounce off that
surface directly back to the listening position and
potentially cause response problems.
Placing absorptive material on these surfaces will
reduce the effect of first reflections and improve
the sound of the system. The thicker the acoustic
material is, the more effective it will be. Also, creating an air space behind the material will improve
its effectiveness. Place as much absorption that
is practical at the first reflection points to improve
the response of the system.
Bass trapping
Figure 7: Reflection diagram
desired to improve the response of the system and room environment.
anomaly or perhaps room modes are disturbing the bass response
You can connect the device directly to the speakers using a conventional headphone to RCA
adapter. Play the pink noise from the Dynaudio
Meter and adjust the level for a reasonable playback volume. If you wish to play pink noise from
your computer workstation, a WAV file containing
pink noise is available at:
The whole point to a good loudspeaker is to
get accurate representation of the sound, good
or bad, so that mix decisions can effectively be
made. Adjust the tilt filter to the setting you are
most comfortable with.
Beyond the settings for the loudspeakers, additional tweaks may be
recording. Objective tests can be made simply with a smartphone
• Pink Noise Source
Play some recorded material that you are familiar
with through the speakers to see if the sound
is what you expect. Adjust the tilt filters both
directions to hear the different tonalities that are
possible. It is also suggested that you listen to
material you know actually sounds bad or has
defects in the recordings. A truly neutral loudspeaker will reveal these defects clearly.
Listening tests / Final tweaks
If you notice any peaks or dips in the low frequency response curve of the RTA (20-250 Hz),
they may be caused by room modes. Room
modes occur at specific low frequencies that
have wavelengths that are equal to or multiples
of the dimensions of the listening room.
For example, if the listening room is 4 meters
long, there may be a room mode at 43 Hz since
its wavelength is about 8 meters. What this means
is that for this frequency, the room response will
change dramatically depending on the position
of the listener and the loudspeaker. You may hear
a more of this frequency or less of it depending
on the listening position in the room. Modes
can be formed from all dimensions of the room;
length, width, and height. The solution is to place
sound absorption designed for low frequencies
in the most effective places to reduce the effect
of room modes.
Many manufacturers make sound absorptive
devices called bass traps that are designed to
be placed in or near corners and will reduce the
amount of reflected low frequency energy in the
room. By dampening the resonance of the modes,
the low frequency response of the room may be
smoothed out.
When placing bass traps, always check the resulting frequency response curve with pink noise and
an RTA to ensure that the loudspeaker response
is improving. Then listen to your favorite reference
material to see how this affects it.
Dynaudio LYD — Series / Connecting Speakers
LYD Series
and assembled
in Denmark
Dynaudio A/S
8660 Skanderborg
LYD Series Owner’s Manual,
EN - Item no. 455625D
All text and image copyrights reserved.
Subject to change without notice.