DLS Reference MW10D User manual

REFERENCE SERIES
SUBWOOFERS
MW10D
MW12D
WELCOME
Thank you for buying a DLS Reference subwoofer.
The subwoofer must be installed correctly in order to work well.
This manual will show you how to install it like a pro. Please
read the entire manual before beginning the installation.
Install the subwoofer yourself if you feel confident with our
instructions and if you have the proper tools. However if you
feel unsure, turn over the installation job to someone better suited
to it.
The speakers are designed for enclosure mounting. In "open
air" installations the power handling capacity is reduced by 30%
from the nominal value. We don’t recommend ”open air”
installations for Reference subwooers.
CONNECTION OF SUBWOOFER
How to connect depends on what type of amplifier you use.
The best is to follow the instructions given in the manual for the
amplifier. Most amplifiers today have built-in lowpass crossover
and possibilities to connect your subwoofer in bridge mode.
Two 4 ohm subwoofers are often connected in stereo mode since
most amplifiers can´t handle bridge mode loads below 4 ohms.
Make sure to connect in a way that don´t ruin the amplifier. If
you have a DLS Ultimate amplifier it´s possible to connect the
two subwoofers in parallel, these ampliers are 1 ohm stable.
We also recommend the use of a subsonic highpass filter. This
gives a better bass reproduction with less "rumble". In most DLS
amplifiers this feature is already built-in.
For wiring use high class speaker wires, min AWG13 (2.5 mm2).
For example DLS SC 2x4.
ENCLOSURE DAMPING
Most enclosures should be damped inside with syntetic
(acoustic) wool or damping mat (line). Attach the damping ma-
terial on the wall opposite from the speaker and port.
In a vented enclosure the speaker and port should be on the
same side, otherwise a fade-out of some frequencies can occur.
In most vehicles, except for SEDAN cars, the speaker and port
should be directed backwards for best result.
SUBWOOFER ENCLOSURES, GENERAL
Build your enclosure in a stable and airtight material. The best
is MDF-board, 19 mm, or particle board, 22 mm. Larger
enclosures must have bracing inside to avoid vibrations. The
enclosure must be completely airtight. Use sealing compound
in all joints, also around the cable terminals. The size of the
enclosure is decided by the speaker data.
VENTED ENCLOSURES
A speaker in a vented enclosure has a higher efficiency (+3 dB)
and higher power handling capacity than in a sealed enclosure.
In a vented enclosure the sound from the speaker and the port
work together creating a higher sound level. The sound from
the port must come out in the same phase as from the speaker
otherwise the result is bad.
The size of the vented enclosure is decided by the speaker data
just as for the sealed one.
The size of the vehicle often decides the practical size of the
enclosure. A smaller enclosure has a higher resonant frequency
than the larger one. The size of the enclosure should not be so
big that the speaker plays below it´s own free air resonance
(Fs), then it loose in power handling capacity.
The port does not have to be fully inside the enclosure as long
as the area and length are correct. Sometimes you need two or
more ports in an enclosure. You can convert from one to two or
more ports as long as the total port area is the same.
MW10D & MW12D works well in vented enclosures. We don’t
recommend sealed enclosures for these subwoofers.
IMPORTANT!
Think of the speaker weight when you do your install. Use heavy
bolts when fastening the sub to the enclosure baffle.
DLS Svenska AB
P.O. Box 13029
SE-40251 Göteborg, Sweden
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
www.dls.se
WARRANTY SERVICE
This speaker is covered by warranty, depending on the conditions
in the country where it is sold. If the speaker is returned for
service, please include the original dated receipt with the product.
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 Technical Assistance
For technical assistance ask the shop where the product was
sold or the distributor in your very country.You can always phone
the DLS Helpdesk in Sweden + 46 31 840060 or send an e-mail
to [email protected]
Information can also be found on our WEB-site www.dls.se
We follow a policy of continuous advancement in development.
For this reason all or part of specifications & designs may be
changed without prior notice.
RUNNING-IN PERIOD
Allow the speaker to play for at least 15-20 hours. After this
time the performance is correct.

Technical specifications for DLS Reference MW12D
MW12D
Size 30 cm (12")
Impedance 4 ohm
Nom. power (RMS) 400 W (max 600)
Freq. range 20 Hz - 2 kHz
Voice coil, diameter 75 mm (3”)
Voice coil, length 20 mm (0,79”)
X-max +-9 mm (0,35”)
Cms 162
SD 531 cm2
Cone material Magnesium one cone body
Magnet weight 140 oz (3,97 kg)
Magnet, diameter 180mm (7,09”)
Installation depth 153 mm (6”)
Mounting hole 282 mm (11,1”)
Outer diameter 313 mm ( 12,32”)
Weigth 9,7 kg (21,3 lbs)
Single voice coil
Re, DC-resistance 3,5 ohm
BL product 17,5
Sensitivity (SPL 1W/1m) 93,5 dB
Resonant freq. (Fs) 39,8 Hz
Vas (litre) 64,9
Vas (ft3) 2,29
Qms 3,16
Qes 0,28
Qts 0,26
ABOUT THE RECOMMENDED ENCLOSURES
The performance of these recommended enclosures will vary from vehicle
to vehicle. It is more difficult to get a tight and well defined bass in a
SEDAN vehicle because of the tightness between trunk and interior. In
most cases the recommended enclusures below is the best choise. The
vented box is to be preferred.
- The given enclosure volume is the inner volume.
- Volumes occupied by speaker and ports have already been added to
the given enclosure volumes so don’t add any more volume.
- Use DLS bass port kits for best result.
There are two flanges coming with this kit. The larger one is for the
outside, and the smaller one should be attached to the tube inside the
enclosure.
Make a round hole in the box where you want to mount the bass port.
The larger flange should beattached to the outside of the box. Fasten
it to the box with screws or with some glue. There are prepared drill
holes on the back of the flange.
The smaller flange is for the inner end of the tube. Use a PVC-glue to
attach it to the tube.
Then glue the tube to the port mounted in the box.
Use sealing compound round the flange to make the box as airtight as
possible.
ENCLOSURE PLACING IN DIFFERENT TYPES OF
VEHICLES
In small vehicles like VW Golf, Peugeot 306 and similar the bass box
should be installed with both speaker and port directed backwards.
Alternatively booth speaker and port can be directed upwards. This way
of mounting is valid for all types of vehicles where the trunk is incorporated
with the inner compartment.
In sedan vehicles with the passenger compartment separated from the
trunk, the enclosure should be installed with booth speaker and port
directed towards the rear seat. Some cars have an opening in the middle
of the rear seat for loading skis etc. You can install the enclosure behind
this opening and direct speaker or port through this opening. There
must be some free space in front of the port, (between the rear seat and
the port opening).
In large vehicles like station wagons the best sound is achieved with
the enclosure installed behind the rear seat with booth speaker and port
directed backwards. Alternatively you can install the enclosure on one
side of the luggage compartment.
CALCULATE YOUR OWN ENCLOSURE
Box volumes:
When calculating the inner volume of an enclosure you just multiply the
width (W) x height (H) x depth (D).
Use measures in dm and you will get the answer in liters.
A trapezoid box is calulated as this:
Vol=width (W) x height (H) x upper depth (UD) + lower depth (LD)
2
Be sure to measure the
inside dimensions.
W
H
UD
LD
Technical specifications for DLS Reference MW10D
MW10D
Size 25 cm (10")
Impedance 4 ohm
Nom. power (RMS) 400 W (max 600)
Freq. range 25 Hz - 2 kHz
Voice coil, diameter 75 mm (3”)
Voice coil, length 20 mm (0,79”)
X-max +-9 mm (0,35”)
Cms 137
SD 363 cm2
Cone material Magnesium one cone body
Magnet weight 50 oz (1,42 kg)
Magnet, diameter 156 mm (6,14”)
Installation depth 125 mm (4,92”)
Mounting hole 236 mm (9,29”)
Outer diameter 266 mm ( 10,47”)
Weigth 5,3 kg (11,68 lbs)
Single voice coil
Re, DC-resistance 3,5 ohm
BL product 17,3
Sensitivity (SPL 1W/1m) 87,4 dB
Resonant freq. (Fs) 36,9 Hz
Vas (litre) 25,7
Vas (ft3) 0,91
Qms 2,33
Qes 0,36
Qts 0,31

RECOMMENDED ENCLOSURE
MW12D
Vented enclosure:
Wiring : Single voice coil
Volume : 35 / 1,24 (liter / ft3)
Port* : 4”(10,2 cm) x 20 cm / 7,87”
Damping : Line inside
F3 : 54 Hz
* Use the BP 110 port kit coming with the
subwoofer. The tube is already cut to it’s
correct length.
Outside box dimensions:
Width : 550 mm (21,65”)
Height : 350 mm (13,78”)
Lower depth : 307 mm (12,09”)
Upper depth : 207 mm (8,15”)
Material : MDF 19 mm (0,75”)
RECOMMENDED ENCLOSURE
MW10D
Vented enclosure:
Wiring : Singe voice coil
Volume : 23 / 0,81 (litre / ft3)
Port* : 3”(6,8 cm) x 20 cm / 7,87”
Damping : Line inside
F3 : 40,1 Hz
* Use the BP 75 port kit coming with the
subwoofer. The tube is already cut to it’s
correct length.
Outside box dimensions:
Width : 500 mm (19,69”)
Height : 320 mm (12,60”)
Lower depth : 265 mm (10,43”)
Upper depth : 165 mm (6,5”)
Material : MDF 19 mm (3/4”)
For best result, use the recommended
enclosure.
If you want to modify the dimensions,
use the calculation methods
described on previous page. As an
alternative the port can also be
mounted on the side of the enclosure.
Technical drawing for a
23 litre enclosure.
The MW10D can work well in a
23 litre vented enclosure.
Here is the drawing for the box
and the separate boards needed
to build a suitable enclosure.
Technical drawing for a
35 litre enclosure.
The MW12D can work well in a
35 litre vented enclosure.
Here is the drawing for the box
and the separate boards needed
to build a suitable enclosure.
VENTED
Width
Height
Lower
depth
Upper
depth
VENTED
Width
Height
Lower
depth
Upper
depth
For best result, use the recommended
enclosure.
If you want to modify the dimensions,
use the calculation methods
described on previous page. As an
alternative the port can also be
mounted on the side of the enclosure.