DLS Reference RCS8.D2 8 Inch Slim Subwoofer User Manual
- October 30, 2023
- DLS Reference
Table of Contents
Reference RCS8.D2 8 Inch Slim Subwoofer
User Manual
RCS8.D2 8 Inch Slim Subwoofer
Welcome to DLS!
Thank you for buying a DLS Reference RCS8.D2 subwoofer. For us, it’s all about
the sound experience. We care deeply about sound and construction quality. In
order for your experience to be as optimal as possible, it is important that
you fully read this manual, preferably before you start your installation.
Keep the manual in a safe and accessible place for future reference.
Your subwoofer must be installed correctly in order to work as intended. Make
sure you have all necessary tools nearby before starting and that you are
completely confident in how to proceed. If you feel the slightest uncertainty;
feel free to take the help of
an experienced installer or a car audio dealer.
Warranty
This subwoofer is covered by warranty, depending on the conditions in the
country where it is sold. If the product is returned for service, please
include the original dated receipt with the product.
DECLARATION OF CONFORMITY
DLS subwoofers for vehicles are manufactured in accordance with the EU
directive EEC 95/54 (72/245/ EEC) and are marked with the approval number.
They are also marked in accordance with the WEEE-directive 2012/19/EC. The
products are also produced
in accordance with the EU RoHS directive 2015/863/EU.
Installation
Your RCS8.D2 subwoofer has a dual 2 ohm voice coil. How to connect the
subwoofer depends on what type of amplifier you use and it’s optimum load.
The best way to do a correct connection is to follow the instructions given in
the manual for the amplifier. Most amplifiers today have built-in low pass
crossover and possibilities to connect your subwoofer in bridged mode.
When designing a subwoofer system, consider the following:
- Subwoofers being used in the same enclosure or powered by the same amplifier should be identical. Do not use different types of subwoofers that will play in the same frequency range.
- If you are designing a multiple sub woofer system, be sure to configure the subwoofers so that they each receive the same amount of power from the amplifier.
- Do not mix serial and parallel connected woofers, voice coils or pairs. If you plan to use an odd number of subwoofers, be sure to connect all the woofers in either series or parallel connection.
- For wiring, use high class speaker wires, min AWG16(1.5 mm²).
Wiring diagram
Warning! Do not expose your amplifier to loads below the manufacturer’s
recommendations. Below you will find some examples of different wiring
schematics. Use the following examples to determine the required impedance
load of your connection.
Parallel connection
One 2 Ohm subwoofer =1 Ohm load
Running-in time
Allow the subwoofer to play for at least 15-20 hours in order to perform at its absolute best. This run-in can be made with bass tone sweep or with just music. Start at a moderate volume and increase the volume step by step during the running-in period. After the 15-20 hour run in session the performance and characteristics will be in the correct condition.
DLS support
For technical assistance, ask your car audio dealer where the product was sold or the distributor in your country. You can always contact the DLS Helpdesk in Sweden at this e-mail: info@dls.se. 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 and designs may be changed without prior notice.
Enclosure info
This subwoofer is normally designed for enclosure mounting. In “open air”
installations the power handling capacity is reduced by more than 30% from
the nominal value. We do not recommend using an “open air” installation for
the RCS8.D2 subwoofer.
General
Build your enclosure in a stable and airtight material. MDF-board or
particle board, 19-25mm is two good choices. 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 and calculated by the electro-acoustic parameters
of the woofer.
DLS recommends that you should choose the enclosure you will use based on the
type of music you listen to, how much amplifier power you will use for the
subwoofer and how much space inside the vehicle you can devote to a subwoofer
enclosure.
Note! RCS8.D2 has a design with “open voice coil” for improved cooling. This
construction gives the best sound performance. To prevent dirt from entering
the voice coil gap, follow these instructions:
- Keep the subwoofer in the plastic bag until it is time for installation.
- Carefully clean the enclosure inside with a vacuum cleaner before mounting the subwoofer.
Sealed enclosures
Sealed enclosures constructions is straight forward and are easy to build. The
size is not critical, but it can’t be too small. The speaker data such as Fs,
Ots, Vas and X-max decides the size of the enclosure. A large subwoofer needs
larger boxes. Two woofers need a box of the double size etc. The enclosure
must be completely airtight.
A sealed enclosure provides the most control over the woofer’s movement, a
woofer mounted in a sealed enclosure will handle more power than a woofer
mounted in a vented enclosure type.
Sealed enclosures provide more accurate sonic reproduction than other
enclosure types when mounted inside a vehicle, so they are well suited to all
types of music.
An optimum sealed enclosure is always smaller than vented enclosures optimized
for a particular subwoofer, so they require the smallest amount of space
inside the vehicle.
Damping
Most enclosures should be damped inside with synthetic (acoustic) wool or
damping mat (line). In a sealed box we recommend the use of damping wool and
should be filled with acoustic wool up to 75%.
In a vented enclosure attach the damping material on the wall opposite from
the subwoofer and port.
If you require more damping it’s also possible to add sides and top/bottom. Do
not place any damping material in the port or at its openings.
Recommended enclosures
The recommended enclosure volume refers to the inner volume and includes the
driver displacement volume.
| Type | Volume | Qtc | F3 | Fb | Port |
|---|---|---|---|---|---|
| Sealed | 8-13L | ||||
| 0.28 – 0.46 cu ft | 0.885 – 0.747 | 57Hz – 55Hz | – |
We don’t recommend using RCS8.D2 in a vented enclosure.
Note! The performance of the recomb mended 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 separated space between the trunk and the
passenger compartment.
Enclosure placement
In smaller vehicles of different models (like a VW Golf, Peugeot 206, 306,
etc. the enclosure should be installed with the subwoofer directed backwards
or 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 where the passenger
compartment is separated from the trunk, one option is to install enclosure
with the subwoofer directed towards the rear seat. Some cars have an opening
in the middle of the rear seat for storage. You can install the enclosure
behind this opening and direct speaker through this opening. Be sure you seal
the sides of the enclosure with additional covering so no pressure will slip
between the opening and your subwoofer and into the trunk area. The floor and
sides in the trunk area can also be good alternatives for the enclosure
placement.
In large vehicles like station wagons the best sound is achieved with the
enclosure installed behind the rear seat with subwoofer directed backwards.
You can also install the enclosure on one side of the luggage compartment.
Calculate enclosure volume
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 litres.
Specifications
| Art no | CS-RCS8.D2 |
|---|---|
| Size: | 8″/ 200mm |
| Impedance: | 2+2 Ohm |
| RMS power: | 250W |
| MAX power: | 500W |
| Sensitivity: | 83dB 1W/1M |
| Voice coil size: | 2″ I 50mm |
| Voice coil material: | 4-layer copper voice coil/ TIL former |
| Cone material: | Sandwich Composite I PP dust cap |
| Magnet: | 40Oz Ferrite |
| Freq. range: | 30Hz-500Hz |
| Weight: | 3.5kg |
Electro-Acoustic Parameters
| Fs: | 44Hz |
|---|---|
| Re: | 3.8(1.9+1.9) Ohm |
| Oms: | 544.50% |
| Qes : | 0.726 |
| Qts : | 0.641 |
| Cms: | 0.13mm/N |
| Mms: | 94.8g |
| BI: | 11.8 |
| Vas: | 9.5L |
| Sd: | 213.8cm? |
| Xmax: | ± 6mm |
| Vd: | 0.84L |
Product markings
The crossed-out wheelie bin symbol means that the product, literature
and packaging included must be taken to separate collection at the end of
their working life. Do not dispose of these products as unsorted municipal
waste: take them for recycling. For info on your nearest recycling point,
check with your local waste authority.
This product has been granted with the CE certification mark to show
that the product follows the health, safety, and environmental protection
standards for products sold within the European Economic Area (EEA).
DLS products complies with the relevant provisions of the RoHS Directive for
the European Union. In common with all Electrical and Electronic Equipment
(EEE) the product should not be disposed of as household waste. Alternative
arrangements may apply in other jurisdictions.
DLS is a global partner of the European Mobile Media Association, an
organization that focus on promoting the custom made mobile media
installations to consumers.
We follow a policy of continuous advancement in development. For this reason
all or part of specifications & designs may be changed without prior notice.
We reserve for possible typos, factual or numeric errors that may have been
printed on any products, package designs, user manuals and/or other included
accessories.