DLS UR12, SP12, SP18S, SP15S, UR15 User Manual

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DLS UR12, SP12, SP18S, SP15S, UR15 User Manual

ULTIMATE SERIES SUBWOOFERS

UR10, UR12, UR15 SP12, SP15 SP15S, SP18S

WELCOME

Thank you for buying a DLS ULTIMATE 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 dont recommend ”open air” installations for Ultimate 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.

The UR10, 12 & 15 have dual, four ohm, voice coils. Each voice coil has an impedance of 4 ohms. If they are connected in series the resulting impedance is 8 ohms. If they are connected in parallel the resulting impedance is 2 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 voice coils in parallel, these ampliers are 1 ohm stable.

SP12 and 15 have dual, two ohm, voice coils which should be considered when you connect them.

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 2x2,5.

If you have an amplifier without built-in crossover you must use a passive crossover between amplifier and subwoofer like in this example, one crossover for each voice coil.

Component values are for 4 ohms.

+

1234567

 

1234567

 

 

1234567

 

 

L

C

 

 

-

Connected with a 12 dB passive low-pass x-over = 10 mH coil in series and a bipolar capacitor of 300 microFarad in parallel. Crossover frequency is 95 Hz.

Active filter

Amplifier

 

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.

SEALED ENCLOSURES

Sealed enclosures are easy to build. The size is not critical, but it can´t be too small. The speaker data such as Fs, Qts, Vas and X-max decides the size of the enclosure.

Large speakers need larger boxes. Two speakers need a box of the double size etc. The enclosure must be completely airtight.

A sealed enclosure should be filled with acoustic wool up to 75 - 100%.

A sealed enclosure has a lower efficiency than vented enclosures but they can handle high power and are easy to build.

A subwoofer in a sealed enclosure creates a tight bass suitable for the audiophiles listening to classical music, jazz and soft rock. All the Reference subwoofers are recommended NOT to use in sealed enclosures.

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 looses 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.

All DLS subwoofers works well in vented boxes.

BANDPASS ENCLOSURES

In all bandpass enclosures the speakers are hidden inside the enclosure, all sound is coming out through the ports. There are different types of bandpass enclosures and they have in common that they are a bit more difficult to build. Most DLS subwoofers can be used in bandpass enclosures.

IMPORTANT!

Connection in mono bridge mode with an active x-over. Voice coils connected in series. If you have a 1 ohm stable amplifier the voice coils should be connected in parallel for best performance (for example on a DLS monoblock).

The speaker cones of UR10,12 & 15 are made of magnesium, a material of low weight with excellent acoustic qualitys.

We recommend you NEVER to touch the cone body with you fingers. Remaining deformation of the cone body will occour if you push it with your fingers.

Also think of the speaker weight when you mount it. If you don´t mount it properly it can get loose.

Valid from 2003-12-01

TECHNICAL SPECIFICATIONS FOR DLS ULTIMATE SUBWOOFERS

Revised data for UR10 valid from production date 2003-07-01. Revised data for UR12 valid from production date 2003-12-01.

 

UR10

UR12

UR15

 

 

Size

25 cm (10")

30 cm (12")

37,5 cm (15")

 

 

Impedance

2 x 4 ohm

2 x 4 ohm

2 x 4 ohm

 

 

Nom. power (RMS)

400 W (max 700)

500 W (max 800)

500 W (max 800)

 

 

Freq. range

25 Hz- 2 kHz

20 Hz-2 kHz

15 Hz- 2 kHz

 

 

Sensitivity

85,6 dB

87,2 db

90 dB

 

 

Voice coil diameter

75 mm (3”)

75 mm (3”)

75 mm (3”)

 

 

Voice coil height

42 mm (1,65”)

42 mm (1,65”)

42 mm (1,65”)

 

 

Re

1,92 ohm*

1,6 ohm*

1,93 ohm*

* Data measured with

Voice coil inductance, 1 kHz

0,8 mH

0,89 mH

0,89 mH

VC connected in parallel

BL product

13,1

16,1

13,9

 

 

X-max

+-14 mm (0,55”)

+-14 mm (0,55”)

+-14 mm (0,55”)

 

 

Suspension compliance CMS

80,2

82

146

 

 

SDEffective piston area

314,6 cm2

452,3 cm2

854,8 cm2

 

 

Resonant freq. (Fs)

42,3 Hz

36,1 Hz

27,5 Hz

 

 

Vas (liters)

13,9

24

116,7

 

 

Vas (ft3)

0,5

0,85

4,12

 

 

Qms

5,62

4,98

4,31

 

 

Qes

0,40

0,32

0,40

 

 

Qts

0,37* (0,7 with single VC)

0,3* (0,6 with single VC)

0,36* (0,57 with single VC)

Cone material

Magnesium

Magnesium

Magnesium

 

 

Magnet weight

180 oz (5,1 kg)

200 oz (5,67 kg)

200 oz (5,67 kg)

 

 

Magnet diameter

7,1" (180 mm)

8,7" (220 mm)

8,7" (220 mm)

 

 

Installation depth

5,24" (133 mm)

5,9" (150 mm)

6,93" (176 mm)

 

 

Mounting hole

9,29" (236 mm)

11,1" (282 mm)

14,17" (360 mm)

 

 

Outer diameter

10,39" (264 mm)

12,2" (310 mm)

15,35" (390 mm)

 

 

Weigth

20 lb (9,1 kg)

28,66 lb (13 kg)

29,54 lb (13,4 kg)

 

 

 

 

 

 

 

 

RECOMMENDED ENCLOSURES FOR UR10, UR12 & UR15

RUNNING-IN PERIOD

 

F3 = approximative lower frequency for vented

Allow the speaker to play for at least 15-

 

boxes in Hz. Often called F-3 dB point = the point

20 hours. After this time the

 

where the power is 50% lower.

 

performance is correct.

 

Fb = Box resonant frequency

 

 

 

VENTED ENCLOSURE

 

 

 

Subwoofer

Volume (liters/ft3)

Port

Damping

F3

Fb

UR10*

vol: 19 / 0,67

3” x 40 cm/15,75”

Line inside

40,1 Hz

40,0 Hz

UR12*

vol: 27,4 / 0,95

3” x 33 cm/ 13”

Line inside

37,4 Hz

34,0 Hz

UR15/par

vol: 57 / 2,01

4” x 24 cm/9,45”

Line inside

51,2 Hz

39,8 Hz

UR15/ser

vol: 52 / 1,84

4” x 24 cm/9,45”

Line inside

43 Hz

39,8 Hz

* voice coils in either series or parallel

SEALED BANDPASS

The speaker is installed in Vb1 playing into chamber Vb2 where the port(s) are installed.

Vb1=rear, Vb2=front

UR12 (VC in parallel, 2 ohm

Vb1

Vb2

Port Vb2

19,5

11,16

1x6,8x32 cm

0,69 ft3

0,39 ft3

1 x 3" x 12,6" (US)

F3 Vb1: 40,5 Hz, Vb2: 73,6 Hz

UR15 (VC in parallel, 2 ohm)

Vb1

Vb2

Port Vb2

41,13

55,4

1x16x27 cm

1,45 ft3

1,96 ft3

1 x 6" x 10,6" (US)

F3 Vb1: 50 Hz, Vb2: 102,5 Hz

SEALED ENCLOSURE

UR10 single voice coil:

15 liters / 0,53 ft3 F3: 49,9 Hz

UR12 single voice coil:

16 liters / 0,56 ft3 F3: 49,8 Hz

UR15 single voice coil:

55 liters / 1,94 ft3 F3: 52,4 Hz

use only one voice coils in sealed enclosures

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