Dls RMW10 User Manual

REFERENCE SERIES

RMW10

SUBWOOFERS

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 mm
For example DLS SC 2x4.

2

RMW12

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.
RMW10 & RMW12 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.

ENCLOSURE DAMPING

Most enclosures should be damped inside with syntetic
(acoustic) wool or damping mat (line). Attach the damping ma­terial 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.

RUNNING-IN PERIOD

Allow the speaker to play for at least 15-20 hours. After this
time the performance is correct.

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Technical Assistance

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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 e­mail to info@dls.e
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.

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.

DLS Svenska AB

P.O. Box 13029

SE-40251 Göteborg, Sweden

Tel: [phone]

Fax: [phone]

E-mail: [e-mail]

www.dls.se

Technical specifications for DLS Reference RMW10

RMW10

Art.no 10-21410
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 cm
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)

2

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

Single voice coil

Technical specifications for DLS Reference RMW12

Art.no 10-21412
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 cm
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)

RMW12

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

2

Qes 0,28
Qts 0,26

Single voice coil

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)

W

2

UD

Be sure to measure the

H

inside dimensions.

LD