Dynaudio SUB 250 SAT, SUB 250 COMPACT, SUB 250 MC User Manual
Dynaudio Sub 250
Owners Manual/Bedienungsanleitung
Sub 250 Sub 250 Compact Sub 250 SAT Sub 250 MC
Home Systems | Professional | Automotive | Multimedia
Contents/Inhaltsverzeichnis
English 1
Safety........................................................................................... 2
Important Safety Instructions .................................................2
Before operation......................................................................... 3
About this operating manual .................................................. 3
Unpacking ..............................................................................5
Controls and connections....................................................... 6
Operation..................................................................................... 7
Connecting the subwoofer ..................................................... 7
Switching the subwoofer on/off (POWER ON/OFF).............. 9
Adjusting the volume (GAIN)................................................ 10
Selecting the subwoofer cut-off frequency (SUB Lowpass) .10
Setting the phase (PHASE).................................................. 11
Setting the satellite cut-off frequency (SAT Highpass)......... 11
Positioning the subwoofer .................................................... 12
Optimizing settings/Troubleshooting ..................................... 14
General tips.......................................................................... 14
Volume (GAIN)..................................................................... 14
Cut-off frequencies............................................................... 15
Troubleshooting ................................................................... 18
Technical Information/Warranty.............................................. 18
Care and Maintenance......................................................... 18
Warranty............................................................................... 19
Technical Specifications....................................................... 20
Deutsch 21
Sicherheit ..................................................................................22
Sicherheitshinweise.............................................................. 22
Vor dem Betrieb........................................................................ 23
Zu dieser Anleitung ..............................................................23
Auspacken ........................................................................... 24
Anschluss- und Bedienelemente..........................................25
Betrieb .......................................................................................26
Den Subwoofer anschließen ................................................26
Den Subwoofer ein-/ausschalten (POWER ON/OFF)..........28
Die Lautstärke einstellen (GAIN)..........................................29
Die Subwoofer-Grenzfrequenz wählen (SUB Lowpass) ......29
Die Phase einstellen (PHASE)............................................. 30
Die Satelliten-Grenzfrequenz anpassen (SAT Highpass) ....30
Den Subwoofer aufstellen ....................................................31
Einstellungen optimieren/Fehlersuche................................... 33
Generelle Tipps.................................................................... 33
Lautstärke (GAIN) ................................................................33
Grenzfrequenzen.................................................................. 34
Fehlersuche.......................................................................... 37
Technische Informationen/Garantie .......................................38
Pflege und Wartung.............................................................. 38
Garantie ............................................................................... 39
Technische Daten ................................................................40
Dynaudio Sub 250
English
Dear Music Lover,
Thank you for purchasing this Dynaudio subwoofer. With it, you have
chosen for the latest in audio technology and engineering, culminating
into the finest in audio reproduction.
Dynaudio is one of the very few companies who can realize such
loudspeaker concepts through it's own in-house development and
production facilities. These facilities are so advanced and the quality
control is so strict that Dynaudio is likely the only speciality audio
company to have exceeded ISO 9000 and earned QS 9000 certification.
Each Subwoofer model is constructed by Dynaudio's master craftsmen in
Denmark to these high standards of quality.
With their dynamic, accurate performance and ease of integration into
even elaborate systems, Dynaudio subwoofers are ideally suited to
obtain maximum enjoyment from high-resolution formats such as DVDAudio and SACD. These characteristics in combination with sustained
high volume level capabilities make Dynaudio subwoofers also an ideal
choice for demanding home theater and multimedia set-ups.
In order to obtain the best possible performance from your Dynaudio
subwoofer, please carefully read and follow the instructions.
We wish you many musical and exciting moments with your subwoofer,
Dynaudio
Dynaudio Sub 250 1
Safety
Safety Important Safety Instructions
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the
manufacturer's instructions.
8. Do not install near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including amplifiers) that produce heat.
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.
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.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the
manufacturer, or sold with the apparatus. 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 power-supply
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.
15. WARNING: To reduce the risk of fire or electric shock, this apparatus
should not be exposed to rain or moisture and objects filled with liquids,
such as vases, should not be placed on this apparatus.
16. To completely disconnect this equipment from the mains, disconnect the
power supply cord plug from the receptacle. The mains plug of the power
supply cord shall remain readily operable.
WARNING
Risk of Electric Shock. Do Not Open.
X To reduce the risk of electric shock, do not remove the rear panel and do not
expose the apparatus to rain or moisture. No user serviceable parts inside. Refer
servicing to qualified personnel.
2 Dynaudio Sub 250
Before operation About this operating manual
Used signs and symbols
In this operating manual following signs and symbols are used.
Safety signs
General safety sign
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 product.
Dangerous voltage
The lightning flash with 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.
Signal words
Before operation
NOTICE
CAUTION
WARNING
DANGER
Indicates in combination with a safety sign a hazardous situation which, if not avoided,
will result in damage to equipment.
Indicates in combination with a safety sign a potentially hazardous situation which, if
not avoided, could result in minor or moderate injury or damage to equipment.
Indicates in combination with a safety sign a potentially hazardous situation which, if
not avoided, could result in death or serious injury.
Indicates in combination with a safety sign a hazardous situation which, if not avoided,
will result in death or serious injury.
Text markings
Note Additional information is provided, which is important to fully understand the
X The arrow will identify steps to be performed. Please follow the instructions carefully.
1.
2.
3.
italics The result of a step is printed in italics. This may help you verify the success of a
bold Controls are printed in bold type face.
Sub 250 and how to operate it.
Multiple steps that should be performed consecutively are numbered. Please follow
these instructions carefully.
step.
Dynaudio Sub 250 3
Before operation
How this operating manual is structured
This operating manual is divided in three main chapters, in which you can find all the
information needed to operate the Dynaudio Sub 250 successfully:
• Before operation: Learn all about unpacking and connecting the subwoofer. The
controls and connections on the rear panel are also described here.
• Operation: In this chapter you will learn how to operate the subwoofer in general
and how to position it properly for optimum performance.
• Optimizing settings/Troubleshooting: Here detailed explanations can be found
how to optimize the settings in order to achieve the maximum sound quality.
You will find this chapter titles on top of each page for your quick navigation.
4 Dynaudio Sub 250
Before operation
Unpacking
To find the suitable position for the Sub 250 in your listening room, please read the
chapter “Positioning the subwoofer” on page 12.
To unpack the subwoofer
1
2
1. Unpack the subwoofer on a clean, even and soft area; floor carpeting is very
suitable.
2. The packaging should be opened from the top. Remove all accessories that
come packed with the subwoofer (such as AC power cord and grille). Do not
remove the top part of the protective material.
3. With the protective material still in place but with accessories removed, carefully
tilt the packaging on its side and tilt again to turn it upside-down. Ensure that no
part of the top-cover is obstructing the opening at the top.
4. The outer packaging can now be lifted away from the subwoofer itself. Remove
the protective material that now is on top. Through the polyethylene bag you can
now see the underside of the subwoofer.
5. Open the plastic bag and remove such from around the base of the subwoofer.
6. Again, carefully tilt the subwoofer on its side and again to turn it onto its feet. Note
that the top part of the protective material will now come off easily so ensure that
the subwoofer does not drop or slide away in the process.
3
Check that the contents are complete
• Subwoofer: The factory-set power requirements (refer to label on rear of
subwoofer) should correspond for the region where the subwoofer was
purchased. Refer also to chapter “Important Safety Instructions” on page 2.
• Front baffle grille.
• AC mains lead. The supplied lead should be suitable for the region where the
subwoofer was purchased.
• Owners Manual.
Grille
The subwoofer can be operated without the grille. However, it is recommended that
the grille is mounted during normal use to help prevent accidental damage or dirt
settling on the cone of the loudspeaker. With subwoofers, the influence of the grille on
the sound is virtually negligible.
To remove the grille:
X Gently pull the grille at all corners.
To fit the grille:
X Line up the studs with the corresponding front baffle holes.
X Gently push the grille in at all corners.
Note: Be careful when mounting the grille not to touch the cone of the loudspeaker
itself.
Dynaudio Sub 250 5
Before operation
➊
➋
Controls and connections
POWER ON/OFF
➊
Main power switch (to switch the subwoofer manually on and off).
LED: shows operation mode:
• red = subwoofer switched on and in mute mode
• green = subwoofer is activated
AC IN
➋
Main power input.
GAIN
➌
Subwoofer volume level.
SUB Lowpass
➍
Subwoofer lowpass frequency: continuously variable from 50 to 150 Hz.
PHASE
➎
Phase setting: phase can be set to 0° or 180°.
MODE
➏
Subwoofer operation mode LFE or Slave.
➌
➍
➎
➏
➐
➑
➒
➓
• LFE: setting if just one subwoofer is used or for first subwoofer if system
consists of multiple subwoofers. Note that the SUB Lowpass control does
not have an effect when the LFE Mode is selected.
• Slave: setting for second and all following subwoofers. Note that the SUB
Lowpass, PHASE and GAIN controls do not have an effect when the Slave
Mode is selected.
SUB I/O
➐
• LFE/Slave in: input for LFE signal from processor/receiver. Note that the
signal must be a true LFE signal or already have been filtered by the
processor/receiver, as SUB Lowpass does not have an effect in combination
with the LFE input.
• LFE/to Slave: output to next subwoofer if installed.
SAT/SUB Input
➑
Input for full bandwidth signal from processor/receiver. This signal will be
processed according to the SAT Highpass setting and provided at the
SAT Output connection for satellite speakers to be connected.
SAT Output
➒
Output for satellite speakers to be connected. This signal is processed according
to the SAT Highpass setting.
SAT Highpass
➓
Allows cutting off low frequencies of the signal provided at the SAT Output.
• Flat: signal is not processed
• 60: cut-off frequency at 60 Hz
• 80: cut-off frequency at 80 Hz
6 Dynaudio Sub 250
Operation Connecting the subwoofer
Operation
SUB I/O
LFE/Slave In
MODE
Slave
LFE
+
SUB
Lowpass
+
GAIN
PHASE
+
NOTICE
SAT/SUB Input
SAT
Highpass
Damage of device due to improper connection
X Set the mains power switch to OFF before connecting the Sub 250.
X Only switch the subwoofer on (mains power switch to ON) after all connections and
set up steps have been properly completed.
Note: The Dynaudio Sub 250 can be controlled by any source provided with a LFE
or preamplifier output. In the operating manual the expression “processor/
receiver” will be used for all these sources.
Subwoofer inputs
The Dynaudio Sub 250 provides two different signal inputs:
SUB I/O - LFE/Slave In
This input allows the LFE (Low Frequency Effect) channel to be connected, which is
used in Home Cinema systems to reproduce low frequency effects.
The signal is:
• reproduced by the subwoofer
• routed to the SUB I/O - LFE/To Slave output for a second subwoofer to be
connected.
The SUB Lowpass control has no impact on this input.
SAT/SUB Input
This input allows the connection of the full bandwidth signal from the processor/
receiver (preamplifier out).
The signal is:
• reproduced by the subwoofer,
• routed to the SAT Output terminals. Low frequencies are cut-off according to the
SAT Highpass setting,
• routed to the SUB I/O - LFE/To Slave output for a second subwoofer to be
connected. High frequencies are cut-off according to the SUB Lowpass setting.
See figure left for correlations between input, output and settings.
Note: All Sub 250 inputs and outputs are low level terminals. Thus, neither a power
amplifier output must be connected to the subwoofer nor passive
loudspeakers can be driven by the subwoofer directly!
Subwoofer
To Slave
SAT OutputSUB I/O
Dynaudio Sub 250 7
Operation
Pre Out
LFE/SUB Out
Front Out/
Pre Out
➊
➋
Sub 1
(Master)
Connecting a single subwoofer
➊ To connect the SAT/SUB input:
X From the preamplifier output of your processor/receiver, PC or mediaplayer (often
marked as Pre Out or Front Out) connect a stereo RCA cable to the subwoofer
LFE/SUB OutFront Out/
SAT/SUB Input.
This signal should not be already processed by the processor/receiver. Please pay
attention to the settings of your processor/receiver.
➋ To connect the LFE channel:
X From the processor or receiver’s low-level (not a speaker output) subwoofer output
(often marked as “subwoofer out”, “Sub out” or “LFE”), connect a mono RCA-toRCA cable to the subwoofer input SUB I/O - LFE/Slave In.
This signal should not be already processed by the processor/receiver. Please pay
attention to the settings of your processor/receiver.
X Set the MODE switch to LFE.
Note: You also can use both connection types. Both signals will be combined in the
Sub 250 and routed accordingly. This allows the Sub 250 to reproduce both
the LFE channel information as well as the bass range of the connected
satellite speakers
Multiple subwoofer connections
The Dynaudio Sub 250 can be used stand-alone or together with multiple subwoofer
units. Using multiple units may be helpful if the listening room is quite large or has
difficult acoustic conditions (e.g. room-modes, see also “Positioning the subwoofer”
on page 12 for further information).
When using two or more subwoofers, the first one (designated “Master”) controls the
following subs (designated “Slave”) via a subwoofer cable.
To connect multiple subwoofers:
1. Connect the first subwoofer with the processors/receiver as described before.
2. Set MODE switch of first subwoofer to LFE.
3. From the SUB I/O - LFE/To Slave output of the first subwoofer connect a mono
RCA-to-RCA cable to the SUB I/O - LFE/Slave In input of the following
subwoofer. This now becomes the slave.
4. Set the MODE switch of the second subwoofer to Slave.
X Further subwoofers can be connected in the same way. Set the MODE switch of
all following subwoofers to Slave respectively.
Note: In order to avoid interference and noise, we recommend you use quality, well
shielded cables.
When using multiple subwoofers in a Master-Slave setup, it is recommended
that the subwoofers are all the same model.
If you wish to use multiple subwoofers with full individual control, set the Input
switch for all to the “Master” position. From the Amplifier, processor or
receiver’s subwoofer output, use a Y-connector.
Sub 2
(Slave)
Sub...
(Slave)
8 Dynaudio Sub 250
Front Out/
Pre Out
LFE/SUB Out
Operation
Connecting loudspeakers
In Home Cinema systems the bass management - meaning the distribution of the low
frequencies to the subwoofer and the speakers - is handled by the settings of the
processor/receiver. If your equipment does not provide bass management, or if you
want to use the Sub 250 together with a common stereo, the low frequency
adjustment of the connected speakers can be managed by the Sub 250. This not only
improves the sound by matching subwoofer and speakers, but also by freeing the
power amplifier and connected speakers from the effects of sound-compromising
bass reproduction. Also refer to the further explanations in the chapter “Connecting
the subwoofer” on page 7.
To connect speakers:
1. Connect the subwoofer with the processor/receiver as explained in “Connecting a
single subwoofer” on page 8.
2. From the Subwoofer SAT Output connect a RCA cable to the Main In of the
power amplifier you use for your speakers.
Note: Stereos do not have a LFE channel. In this case just connect the front outputs
of the processor/receiver (Front Out/Pre Out) with the subwoofer.
The signals connected to the SAT/SUB Input are provided at the SUB I/O -
LFE/To Slave output for connecting another subwoofer. See page 8 to learn
more about connecting multiple subwoofers.
Switching the subwoofer on/off (POWER ON/OFF)
Once you have ensured yourself that all necessary connections have been made, the
subwoofer and the connected components can be switched on.
X Switch the subwoofer ON with the main POWER switch on the rear panel.
The status LED on the rear of the subwoofer will light up red.
Automatic mode
After switching on the Sub 250 is in Automatic mode:
• When a music signal is detected, the internal amplifier is activated automatically.
The status LED on the rear of the subwoofer will light up green.
As long as a signal is available on the subwoofer’s input, it will remain switched on.
• After 15 to 20 minutes of not sensing any input signal, the subwoofer will switch
itself to Mute mode automatically.
The status LED on the rear of the subwoofer will light up red.
Note: To switch the subwoofer completely off, set the main POWER switch to the
OFF position.
Dynaudio Sub 250 9
Operation
Adjusting the volume (GAIN)
CAUTION
High Sound Levels
X To avoid auditory defects do not listen to high sound levels
over a longer period of time.
The correct volume setting is an important aspect in achieving a well balanced
speaker combination. Please also refer to “Specific tips” on page 16 for further
information or ask your local Dynaudio dealer for assistance.
X Adjust the GAIN control, until correct setting is reached.
Note: You can not adjust the volume, when subwoofer is in slave mode. In this case
the volume is controlled by the setting of the master subwoofer.
Selecting the subwoofer cut-off frequency (SUB Lowpass)
The SUB Lowpass control allows the frequency range of the subwoofer to be
defined. Above the selected frequency the sound level decreases rapidly. The correct
setting of this cut-off frequency is important for a well balanced combination of
subwoofer and speakers.
To select the cut-off frequency:
X Set the SUB Lowpass control to the desired frequency between 50 and 150 Hz.
Note: In most audio-video-systems the subwoofer cut-off frequency is already set in
the bass management of your processor/receiver. Please refer to the
operating manual of your processor/receiver for further information. If
possible, switch off any settings. If your processor/receiver does not allow to
switch off the bass management, set it to the desired frequency and set SUB
Lowpass to its maximum value (turn to the very right, 150 Hz).
X Please also heed the instructions given in the operating manual of your
loudspeakers, and refer to “Cut-off frequencies” on page 14 for further information.
10 Dynaudio Sub 250
Setting the phase (PHASE)
Operation
Combined frequency response
Subwoofer
Main speakers
Level
Frequency
With the phase settings you can adjust the timing relationship between the subwoofer
and main speakers. If either subwoofer or main speaker are slightly delayed in
response in relation to the other, it can result in decreased bass output in the
frequency response area where they overlap each other.
The phase relationship between subwoofer and satellite speakers is very dependent
on relative distance, construction and working principles of the main speakers. The
figure on the left shows a case whereby phase of the subwoofer and main speakers
are incorrect in the critical overlap area, thus significantly reducing acoustic output in
the listening room in that area.
To find the correct phase setting:
1. Play a bass-rich track which also covers the overlap area.
2. Toggle the PHASE switch between 0° and 180°.
Choose the setting for which you experience the most bass.
Note: You can not set the phase if the subwoofer is in slave mode. In this case the
phase is controlled by the setting of the master subwoofer.
Setting the satellite cut-off frequency (SAT Highpass)
Depending on the bass capabilities of the speakers, the frequency range of
subwoofer and speakers can overlap between 50 Hz and 150 Hz. A bump or a gap in
the frequency response and thus a lower sound quality will be experienced if the
system is not matched properly. In addition, small speakers and low powered
amplifiers will particularly be affected by the low frequency signals, which again has
an negative effect on the sound quality. Therefore it makes sense to limit the bass
range of the connected speakers (called “satellites” in this case) by a highpass filter.
The Dynaudio Sub 250 provides three settings to achieve this:
• Flat = no limitation
• 60 Hz = frequencies below 60 Hz are cut-off
• 80 Hz = frequencies below 80 Hz are cut-off
To set the cut-off frequency:
X Switch SAT Highpass control to needed position.
Note: In most audio-video-systems the satellite cut-off frequency is already set in the
bass management of your processor/receiver. Please see the operating
manual of your processor/receiver for further information. You can decide
whether you use the processor/receiver or the subwoofer for setting the cut-off
frequency. Just take care, not to set it twice by setting either of them to Flat.
Dynaudio Sub 250 11
Operation
1/4
1/4
1/2
3/4
1/2 3/4
Listening Room
Positioning the subwoofer
Although it is often said that the location of a subwoofer in a listening room is not
critical (as the human ear can not locate direction at very low frequencies), we
recommend that you choose its position carefully. Thus the subwoofer can integrate
seamlessly with the other speakers in the system and interact correctly with the room
acoustics.
All of the following should be taken as rough guidelines; bass response in general is
very dependent on the acoustics of the listening environment. Finding the best
position often involves a lot of trial-and-error experimentation. Always trust your ears,
even if the position of the subwoofer seemingly goes against the guidelines.
Contradictory as it may seem, good integration of subwoofers has been achieved
when one isn’t aware that a subwoofer is present at all in the system, yet performance
involves fast, deep and solid bass without sounding stressed, even at loud levels.
Choose adequate music material
When experimenting to find the optimal location, use a couple of music tracks with
repetitive bass across a large spectrum. The tracks should be sufficiently different
from each other and each should cover a wide bass-range. Musical instruments, such
as a double-bass, bass guitar, church organ, etc. cover a wide spectrum in the bass
region and are therefore very suitable. Using non-music (such as action movies)
material to position and adjust the subwoofer with, may lead to spectacular results
with such material but almost always it will result in overblown and excessive bass
when playing music with the same setting.
Impact of room-modes
Every listening environment will have specific “room-modes”, whereby in some
specific locations in the room and at particular frequencies, the bass may be too much
or too lean. This effect will be stronger in square and “shoe-box” shaped rooms. With
a single subwoofer, the better position for the subwoofer relative to the listening
position will be the one where bass is perceived to be neither too much nor too lean
at any given frequency.
X Avoid placing the subwoofer at 1/4, 1/2 or 3/4 of either the length or width of the
room as at these locations the room-modes are likely to be strongest (the dashed
lines in the figure)
Note: Always position subwoofers at least 1 mtr/3 ft away from a CRT television as
the magnetic field emanating from the subwoofer may otherwise distort the
picture. If you see discoloration on the television screen, try moving the
subwoofer and other speakers close by away from the television.
12 Dynaudio Sub 250
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