Owner’s Manual
Flatsub Stereo-One
audio for Life
The information contained in this manual is subject to change without prior notice.
The most current version of this manual is available on our official website at:
www.dls.se
DLS FLATBOX
since 1979
®
DESCRIPTION OF AMPLIFIER MODULE
Fig. 1, Rear amplifier panel.
1. LINE INPUT
RCA line low level input
2. AUX INPUT
3,5 mm stereo plug
3. HIGH LEVEL INPUT
For connection from the amplifier speaker outputs
4. USB POWER
Power supply for USB devices
5. AUTO ON / ON
- In position AUTO ON the amplifier shuts on / off automatically
when signal appears in any of the inputs.
- In position ON the amplifier is active (ON) all the time.
To shut off the amplifier, the POWER switch (7) must be turned OFF.
6. SATELLITE SPEAKER OUTPUT
For connection to a pair of Flatbox speakers
7. POWER
Main power switch
8. POWER INPUT SOCKET
Power input socket with fuse holder
9. VOLTAGE SELECTOR SWITCH
To adjust amplifier from 230 Volt (standard) to 115 Volt
This product must be returned to the separate collection system for electronic products. Do not dispose
this product together with general household waste.
Marking by the ”CE” symbol indicates compliance of
this device with the EMC (Electromagnetic Compatibility) and LVD (Low Voltage Directive) standards of the
European Community
Introduction!
Please read this manual fully before unpacking and installing the product. It will help you to optimise the performance of your speakers.
Unpacking and maintenance
Your speaker should be treated with the same care you would treat a
piece of furniture. Use only a piece of soft cloth to clean the loudspeakers. After unpacking, we suggest you retain all packing material for
future transports.
Running-in period
The performance of the speaker will change subtly during the listening
period.
Please allow your new speakers to play about 50 hours of music at
normal listening level before doing any critical listening.
System
DLS Flatsub Stereo-One is an efficient, active subwoofer with a built-in
80 W class D power amplifier for the subwoofer and 2x35 Watt amplifier for a pair of Flatbox speakers. The loudspeaker unit is a specially
developed, 7”, long-stroke woofer with a powerful magnetic system
combined with a passive radiator for improved bass sound.
It is designed to use as a single amplifier unit. The subwoofer allows
great freedom in placement. With the controls you can adjust level for
front system, level for subwoofer, crossover frequency and Bass EQ,
which makes it easy to adjust for the acoustics in your listening room.
Connecting power supply
The switch "Power" is the on/off switch for the subwoofer. Normal position is AUTO ON which makes the subwoofer start with the rest of your
system, POWER LED glows green. After a period without input signal
the amplifier atomatically reverts to standby, POWER LED glows red.
The power switch "OFF" position is used when the subwoofer is not in
use for a longer period of time.
CAUTION!
If you hear distortion when you increase the volume this is normally a
sign of overloading the subwoofer and you should immediately reduce
the level. We recommend that you use the volume control with care.
Service
Should your DLS loudspeaker system require service, or if you
have difficulty in achieving the fine performance of which your DLS
loudspeaker system is capable, consult the DLS dealer from whom
the system was purchased. Your dealer has the knowledge required
to provide expert advice and assistance. In case the DLS dealer is
unable to assist you, you are welcome to contact DLS on info@dls.se
Warranty
This DLS loudspeaker is warranted to the original purchaser, against
factory defect in material or workmanship, for a period of one (2) years
from the date of original purchase. This warranty is valid only in the
country of purchase, to the original purchaser and is non-transferable.
DLS loudspeakers are music listening devices and should be used for
listening purposes only
They must not be connected to any other equipment than amplifiers
within the specified power range.
DLS cannot be held responsible for damage or injuries caused by
improper use, or use in violation with the recommendations in this
leaflet.
IMPORTANT!
Before connecting electricity to the power supply, it is important that
the POWER switch is OFF and check that the AC switch 115V - 230V
is set to correct voltage for your country. 230 V is standard setting.
Connect the subwoofers input signals before you switch the POWER
switch to AUTO ON.
fig.1
fig.2
IMPORTANT SAFETY INFORMATION!
1. The AC power cord must be connected to an AC outlet where it
can be easily disconnected from the power source. A fixed instal
lation of the power cord is not allowed.
2. The subwoofer must be connected to an AC outlet with protective
ground.
3. Do not use this subwoofer in damp areas and protect it from water.
4. Do not place objects filled with water, such as vases, on the
subwoofer.
5. Unplug the subwoofer during lightning storms or when unused for
long periods of time.
Fig.2
Front panel behind the speaker grille
SATELLITES
Volume control for Flatbox speakers
SUBWOOFER
Volume control for subwoofer
SUB FREQUENCY
Control for adjusting the crossover frequency to
the subwoofer
BASS EQ
Switch for increasing the bass level +5 dB @ 35 Hz in
ON-position
2
3
Date Description ApprovalsIssue #
230V
CAUTION
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,
REPLACE ONLY WITH SAME TYPE FUSE AND RATING
ATTENTION
UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE ET CALIBRE
2.1 Channel AmpliÞer
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING:SHOCK HAZARD DO NOT OPEN
AVIS:RISQUE DE CHOC ELECTRIQUE-NE
PAS OUVRIR
AF 5025
LEFT RIGHT
-
+
-
+
LEFT RIGHT
-
+
-
+
HIGH LEVEL INPUT
SATELLITE OUT
USB +5V
CHARGE
AUTO ON / ON
AUX IN
LEFT RIGHT
LINE LEVEL INPUT
~115V/60Hz T2,0A/250V
~230V/50Hz T1,0A/250V
POWER
ON
OFF
978
1
2
5
4
6
3
INPUT SIGNAL, CONNECTION ALTERNATIVES:
2-CHANNEL STEREO CONNECTIONS
fig 3
Output power subwoofer amplifier : 80 Watts class D
Woofer unit : 7" + passive radiator 7"
Low frequency performance : 32 Hz @ -6dB
Crossover subwoofer amplifier: : 50 - 250 Hz low pass
BASS EQ switch : +5 dB @ 35 Hz
Output power satellite amplifier : 2 x 35 W class D
Crossover Satellite amplifier :12 dB high pass @80 Hz
Technical data for amplifier module AF-5025
Flatbox
Speaker
Flatbox
Speaker
+
+
- L CH + + R CH -
RightLeft
2
3
Date Description ApprovalsIssue #
230V
CAUTION
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,
REPLACE ONLY WITH SAME TYPE FUSE AND RATING
ATTENTION
UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE ET CALIBRE
2.1 Channel AmpliÞer
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING:SHOCK HAZARD DO NOT OPEN
AVIS:RISQUE DE CHOC ELECTRIQUE-NE
PAS OUVRIR
AF 5025
LEFT RIGHT
-
+
-
+
LEFT RIGHT
-
+
-
+
HIGH LEVEL INPUT
SATELLITE OUT
USB +5V
CHARGE
AUTO ON / ON
AUX IN
LEFT RIGHT
LINE LEVEL INPUT
~115V/60Hz T2,0A/250V
~230V/50Hz T1,0A/250V
POWER
ON
OFF
CONNECTION OF STEREO SPEAKERS:
SOUND ADJUSTMENTS
SATELLITES VOLUME control
This control is used to adjust the volume for Flatbox speakers
connected to the SATELLITE OUT terminals. Trust your ears and
your personal taste to find the correct setting.
SUBWOOFER VOLUME control
This control is used to adjust the balance between the subwoofer
and front or satellite / Flatbox speakers. Trust your ears and your
personal taste to find the correct setting.
SUB FREQUENCY control.
The crossover can be continuously adjusted from 50 to 250 Hz. This
frequency is the split frequency between the subwoofer and the
satellite / Flatbox speakers. Trust your ears and your personal taste
to find the correct setting.
BASS EQ switch
This control is used for increasing the BASS level at 35 Hz
centre frequency with + 5dB in ON position. Trust your ears and
your personal taste to find the correct setting.
2
3
Date Description ApprovalsIssue #
230V
CAUTION
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,
REPLACE ONLY WITH SAME TYPE FUSE AND RATING
ATTENTION
UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE ET CALIBRE
2.1 Channel AmpliÞer
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING:SHOCK HAZARD DO NOT OPEN
AVIS:RISQUE DE CHOC ELECTRIQUE-NE
PAS OUVRIR
AF 5025
LEFT RIGHT
-
+
-
+
LEFT RIGHT
-
+
-
+
HIGH LEVEL INPUT
SATELLITE OUT
USB +5V
CHARGE
AUTO ON / ON
AUX IN
LEFT RIGHT
LINE LEVEL INPUT
~115V/60Hz T2,0A/250V
~230V/50Hz T1,0A/250V
POWER
ON
OFF
1. LINE LEVEL INPUT
If your amplifier have separate pre-amplifier
outputs, connect those to LINE LEVEL INPUT,
left (L) and right (R).
2. SPEAKER LEVEL INPUT
Connect the speaker outputs from the stereo
power amplifier to ”left (L) & right (R) "HIGH
LEVEL INPUT".
This alternative is normally used if you have a
signal source without low level signal outputs.
3. AUX INPUT
The AUX IN is a 3,5 mm stereo socket used for
connecting various sources.
You can connect signal from:
- A stereo receiver
- A computer or laptop
- Your TV
- Your mobile phone or tablet
- Any other unit with an Audio output
4. USB POWER
If you want to use a Bluetooth device or similar,
use this USB socket for powering the device.
For powering a Bluetooth device or any other
kind of receiver, the AUTO ON / ON switch (5)
must be in position ON all the time.
4
2
3
1
Placement in the room
The Flatsub Stereo-One is designed for hanging on a wall. A wall bracket
is included with the Flatsub Stereo One. The wall bracket is attached
on the wall as in the drawing below.
Another way is to place it lying under a furniture, for example a sofa.
Horisontal or vertical placement on the wall
The hanging direction of Flatsub Stereo-One can be changed by moving
the wall bracket as described below.
1. This photo shows the original placing of the wall bracket. Fig 1.
2. Remove the bracket by removing it from the rear side using a
T30 torx screw driver.
Remove the lower right (or left)removable foot. See figure. 1& 2
3. Remount the bracket and adjustable foot as in figure 3.
Choose the alternative that suits the wall and your taste.
2
3
Date Description ApprovalsIssue #
Horizontal adjustmentVertical adjustment
Wall bracket
Fig.3
Fig.1
Fig.2
Contact:
DLS Svenska AB
P.O. Box 13029,
SE-402 51 Göteborg
SWEDEN
Phone: +46 31 840060,
Fax: +46 31 844021
e-mail: info@dls.se, www.dls.se
Copyright© DLS Svenska AB. All rights reserved
Remove
Remove
Remount the
bracket here
Remount the
foot here
3
Date Description ApprovalsIssue #
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