DLS U4, ULTIMATE series
THE KIT CONTAINS:
q 2 pcs 4" (10 cm) bass/midrange speakers without grilles
q 2 pcs tweeters RC1 with mounting accessories
q 2 pcs crossover boxes
CONNECTION:
Connection of a 2-way system to one channel. The other channel
is connected in the same way.
FACTS ABOUT DLS ULTIMATE U4
4" element RC1 tweeter
Size 4" (10 cm) 1,25" (3 cm)
Impedance 4 ohm 4 ohm
Nom. power (RMS) 80 Watts 60 Watts
Freq. range 65 Hz-5 kHz 1,8 kHz - 22 kHz
Sensitivity 92 dB / W / m 91 dB / W / m
Outer diameter 104 mm 80 mm
Magnet diameter 70 mm 28 mm
Mounting depth 48 mm 16 mm
Mounting hole 95 mm 45 mm
Fs / Qts / Vas 80 Hz / 0,59 / 4,08 l 950 Hz
X-max +-2 mm
SPEAKER PHASING
To be sure to have the correct speaker polarity (phase) you
can check this by using a 1,5 Volt battery.
Connect a cable from the battery plus-pole to the speaker
plus, and a cable from the battery minus to the speaker minus.
If the speakers are correctly connected the speaker cone
should move outwards on both right and left channel.
This check must be made on the cables going from the
speakers, to the output terminals of your car stereo or
amplifier.
If you have any questions about this product, contact
your local dealer or DLS customer support center.
Speaker connection and tweeter level select:
The filters coming with the system should be connected as in
the drawing. Select tweeter level Hi / Lo by moving the small
jumper inside the filter. Make your own tests for best result.
Sometimes the midrange can be improved by phase reversing
the tweeter. Try it and judge yourself.
NOTE! The filters must be used. If the tweeters are
connected without filter they will be damaged and the
sound reproduction becomes bad.
Thank you for buying DLS ULTIMATE U4 2-way system.
This instruction will help you to do a correct installation.
If you want to get the best sound from your speakers we advice
you to read and follow this instruction. If possible mount the
speakers in a baffle of MDF-board or similar to avoid rattling.
For best result use high quality speaker cables, minimum 1,5 mm
2
.
For example the DLS SC 2 x 1,5.
MOUNTING:
Mount the speakers in the door or in the dashboard of your car.
Two different types of mounting clips are included. There are eight
clips, four for each element, to be used for surface mounting with
four screws (in some cars you use only two clips). Attach the clips
to the upper edge of the element. There are also six clips to be
used for "drop-in mounting" in some dashboards. Attach three
clips to each element. Use three of the five small holes situated
on the basket sides for attaching the clips.
Normally they will fit in the cars original mounting hole. If possible
reinforce with a baffle of MDF-board or similar. An installation high
up on the door side is to be prefered. An alternative installation is
in so called kick panels down on each side of the floor with the
speakers facing up- and inwards towards the listener. A tweeter
mounting close to the bass/mid element is to be prefered. The
tweeter can be installed on the dash-board, or recessed in the
door with the accessories in the tweeter box.
It is important to fasten the speakers properly in order to avoid
bad sound and rattling. The filters included with the speakers must
also be fastened properly to avoid rattling. Don´t install them
close to the cars internal cabling, this can cause interference.
Make sure the cables don´t get jammed causing a short circuit to
ground. This can damage the amplifier circuits.
DLS Svenska AB
P.O. Box 13029
S-402 51 Göteborg, Sweden
Tel. +46 31 840060
Fax +46 31 844021
www.dls.se
INPUT WOOFER TWEETER
+ - + - + -
Bass/mid
Tweeter
Car stereo /
amplifier
_
FILTER DIAGRAM U4:
11Ω
2,7 µF
0,4
mH
3,3Ω
15 µF
Bass element Tweeter RC1
+
NOTE!
Cables are NOT included in the kit.
Grilles for the 4" elements are NOT included in
the kit.
BUILDING BOXES
If you want to build a box to your
speaker a sealed type is to be
prefered. The box volume can vary
depending on how much bass you
want from your speakers. For
fullrange use of the speakers,
follow the recommended box
volumes in the table. If you want to
limit the reproduction at for ex. 100
Hz, divide these volumes by half.