REFERENCE SERIES 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 dont recommend open air installations for Reference subwooers.
W610, W612, W710, W712 / 2006* MW10, MW12, MW110, MW112
* for W712 produced 2006 -
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 cant 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.

IMPORTANT!

The speaker cone of MW10/110, MW12/112 is 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 dont mount it properly it can get loose.

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 builtin lowpass crossover and possibilities to connect your subwoofer in bridge mode. Two 4 ohm subwoofers are often connected in stereo mode since most amplifiers cant handle bridge mode loads below 4 ohms. If you have a DLS Ultimate amplifier its possible to connect two 4 ohm subs in bridge mode, 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 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: +

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 its 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

C 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.
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.

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TECHNICAL SPECIFICATIONS FOR DLS REFERENCE SUBWOOFERS
Size Impedance Nom. power (RMS) Freq. range Sensitivity Voice coil diameter Voice coil height Re Voice coil inductance, 1 kHz BL product X-max Suspension compliance CMS SD- Effective piston area Resonant freq. (Fs) Vas (liters) Vas (ft3) Qms Qes Qts Cone material Magnet weight Magnet diameter Installation depth Mounting hole Outer diameter Weigth 25 cm (10") 4 ohm 180 W (max 360) 20 Hz- 1 kHz 89,7 dB 50 mm (2) 22 mm (0,87) 3,6 ohm 1,58 mH 15,98 +-9 mm (0,35) 290 314,6 cm2 32,9 Hz 40,3 1,42 3,63 0,23 0,22 PPC 40 oz (1,13 kg) 5,7" (145 mm) 4,29" (109 mm) 9,13" (232 mm) 10,31" (262 mm) 8,16 lb (3,7 kg)
30 cm (12") 4 ohm 210 W (max 400) 20 Hz-1 kHz 89,2 db 50 mm (2) 22 mm (0,87) 3,3 ohm 1,53 mH 15,98 +-9 mm (0,35) 271 452,3 cm2 28,1 Hz 77,9 2,75 3,93 0,32 0,30 PPC 50 oz (1,42 kg) 6,14" (156 mm) 4,72" (120 mm) 11,18" (284 mm) 12,2" (310 mm) 10,14 lb (4,6 kg)
25 cm (10") 4 ohm 200 W (max 400) 20 Hz- 1 kHz 90,8 dB 50 mm (2) 22 mm (0,87) 3,6 ohm 1,49 mH 17,43 +-9 mm (0,35) 308 314,6 cm2 32,4 Hz 42,8 1,51 3,76 0,19 0,18 PPC 80 oz (2,27 kg) 5,7" (145 mm) 5,08" (129 mm) 9,13" (232 mm) 10,31" (262 mm) 11,68 lb (5,3 kg)
W712 /cm (12") 4 ohm 250 W (max 480) 20 Hz-1 kHz 91 dB 50 mm (2) 22 mm (0,87) 3,1 ohm 2,36 mH 16,69 +-9 mm (0,35) 146,5 452,3 cm2 39,8 Hz 54,2 1,91 6,65 0,38 0,36 PPC 100 oz (2,83 kg) 6,14" (156 mm) 5,51" (140 mm) 11,18" (284 mm) 12,2" (310 mm) 13,56 lb (6,15 kg)
RECOMMENDED ENCLOSURES FOR W610, W612, W710 & W712

RUNNING-IN PERIOD

Allow the speaker to play for at least 15-20 hours. After this time the performance is correct. Subwoofer W610 W612 W710 W712 Volume (liters/ft3) vol: 35,6 / 1,25 vol: 41,8 / 1,47 vol: 35,4 / 1,25 vol: 35,9 / 1,27 F3 = approximative lower frequency for vented boxes in Hz. Often called F-3 dB point = the point where the power is 50% lower. Fb = Box resonant frequency Damping Line inside Line inside Line inside Line inside F3 43,4 Hz 45,6 Hz 45,4 Hz 48,5 Hz Fb 43,0 Hz 39,1 Hz 45,0 Hz 45,0 Hz

VENTED ENCLOSURE

Port 4 x 32 cm/12,x 35 cm/ 13,x 29 cm/11,x 29 cm/11,4
SEALED BANDPASS The speaker is installed in Vb1 playing into chamber Vb2 where the port(s) are installed.
Vb1=rear, Vb2=front SEALED ENCLOSURE
Vb1 Vb2 port Vb2 19,0 18,6 1x10,2x19 cm 0,67 ft3 0,66 ft3 1x4"x7,5" (US) F3 Vb1: 45 Hz, Vb2: 108 Hz
Vb1 Vb2 port Vb2 25,08 18,5 1x10,2x23,5 cm 0,88 ft3 0,65 ft3 1x4"x9,25" (US) F3 Vb1: 40 Hz, Vb2: 106,6 Hz
We dont recommend the use of sealed enclosures for these subwoofers except for W712 that can be used in a 17 liter box with F3 85,8 Hz.
Vb1 Vb2 port Vb2 31,65 38,61 2x10,2x19 cm 1,12 ft3 1,36 ftx 4" x 7,5" (US) F3 Vb1: 45 Hz, Vb2: 96,7 Hz
Vb1 Vb2 port Vb2 27,78 14,93 1x10,2x29,6 cm 0,98 ft3 0,53 ftx 4" x 12,3" (US) F3 Vb1: 40 Hz, Vb2: 120 Hz
Size Impedance Nom. power (RMS) Freq. range Sensitivity Voice coil diameter Voice coil height Re Voice coil inductance, 1 kHz BL product X-max Suspension compliance CMS SD- Effective piston area Resonant freq. (Fs) Vas (liters) Vas (ft3) Qms Qes Qts Cone material Magnet weight Magnet diameter Installation depth Mounting hole Outer diameter Weigth 25 cm (10") 4 ohm 350 W (max 550) 25 Hz- 2 kHz 87 dB 75 mm (3) 24 mm (0,94) 3,2 ohm 1,22 mH 12,58 +-9 mm (0,35) 197 314,6 cm2 36,7 Hz 27,5 0,97 2,34 0,44 0,37 Magnesium 50 oz (1,42 kg) 6,14" (156 mm) 4,33" (110 mm) 9,21" (234 mm) 10,31" (262 mm) 10,6 lb (4,8 kg)
30 cm (12") 4 ohm 350 W (max 550) 20 Hz-2 kHz 90 db 75 mm (3) 24 mm (0,94) 3,34 ohm 0,99 mH 16,35 +-9 mm (0,35) 205 452,3 cm2 31,8 Hz 58,8 2,08 1,71 0,31 0,26 Magnesium 70 oz (1,98kg) 7,09" (180 mm) 4,80" (122 mm) 11,10" (282 mm) 12,2" (310 mm) 14,3 lb (6,5 kg)
25 cm (10") 4 ohm 400 W (max 600) 25 Hz- 2 kHz 89 dB 75 mm (3) 24 mm (0,94) 3,23 ohm 1,26 mH 14,20 +-9 mm (0,35) 202 314,6 cm2 35,1 Hz 28 1,51 2,32 0,36 0,31 Magnesium 100 oz (2,83 kg) 6,14" (156 mm) 5,11" (130 mm) 9,21" (234 mm) 10,31" (262 mm) 14,77 lb (6,7 kg)
30 cm (12") 4 ohm 400 W (max 600) 20 Hz-2 kHz 91 db 75 mm (3) 24 mm (0,94) 3,57 ohm 0,95 mH 18,94 +-9 mm (0,35) 210 452,3 cm2 37,1 Hz 60,2 2,83 2,14 0,24 0,21 Magnesium 140 oz (3,97 kg) 7,09" (180 mm) 5,59" (142 mm) 11,10" (282 mm) 12,2" (310 mm) 19,6 lb (8,9 kg)
RECOMMENDED ENCLOSURES FOR MW10, MW12, MW110 & MW112
Allow the speaker to play for at least 15-20 hours. After this time the performance is correct. Subwoofer MW10 MW12 MW110 MW112 Volume (liters/ft3) vol: 24 / 0,85 vol: 32 / 1,13 vol: 28,8 / 1,01 vol: 34,5 / 1,22 F3 = approximative lower frequency for vented boxes in Hz. Often called F-3 dB point = the point where the power is 50% lower. Fb = Box resonant frequency

Port 3 x 26 cm/10,x 37 cm/ 14,x 22 cm/8,x 33 cm/13
Damping Line inside Line inside Line inside Line inside
F3 46,3 Hz 49,1 Hz 40,9 Hz 45,2 Hz
Fb 40,0 Hz 45,0 Hz 38,2 Hz 44,4 Hz
BANDPASS ENCLOSURES The speaker is installed in Vb1 playing into chamber Vb2 where the port(s) are installed. MW10, MW12 & MW112 have ports also in Vb1. MW110
Vb1 Vb2 Port Vb2 16,81 13,48 1x10,2x34 cm 0,59 ft3 0,48 ft3 1x4"x13,4" (US) F3 Vb1: 45 Hz, Vb2: 110,9 Hz

Vb1=rear, Vb2=front

SEALED ENCLOSURE
Vb1 Vb2 Port Vb2 19,02 10,53 1x10,2x31 cm 0,67 ft3 0,37 ft3 1x4"x12,2" (US) Port Vb1: 1 x 6,cm (1 x 3"x11" ) F3 Vb1: 47,8 Hz, Vb2: 109,5 Hz
We dont recommend the use of sealed enclosures for these subwoofers
Vb1 Vb2 Port Vb2 27,02 18,18 3x6,8x20 cm 0,95 ft3 0,64 ftx 3" x 7,8" (US) Port Vb1: 1x10,2x37 cm (1x4"x14,5") F3 Vb1: 56 Hz, Vb2: 94 Hz
Vb1 Vb2 Port Vb2 29,62 17,51 3x6,8x23 cm 1,05 ft3 0,62 ftx 3" x 9" (US) Port Vb1: 1x6,8x17 cm (1x3"x6,7") F3 Vb1: 49,7 Hz, Vb2: 98,8 Hz
HINTS & TIPS FOR DO IT YOURSELF ENCLOSURE BUILDERS
ABOUT THE RECOMMENDED ENCLOSURES
The performance of these recommended enclosures will vay 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 of the vehicle. In this case a bandpass box could be a better choise. - All volumes are inside measures. - Volumes occupied by speaker and ports have already been added to the given enclosure volumes. - Use conical bass ports for best result. (DLS BP-75 or BP-110). If the ports are too long for the box you can use a bend. Either cut the tube and glue it together in angle, or use factory made tube bends. Its easier to use the factory made ones. The total length must be the same as for a straight tube. Make the measure in the center of the tube. The port opening inside the enclosure must not be closer to an interior wall than 3 (75 mm), otherwise it will have negative effects on the airflow. - The enclosure must be very steady and completely airtight. Use 22 mm particle board or 19 mm MDF-board. The particle board has a self resonant frequency of 14 Hz while the MDF has a resonant frequency of approx. 400 Hz. Its important to do some type of bracing inside the enclosure to avoid vibrations. Volume taken up by bracing should be added to the enclosure volumes.

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 ENCLOSURE

Box volumes: When caculating the volume of an enclosure you simply multiply the width (W) x heigth (H) x depth (D). Use measures in dm and you will get the answer in liters. A trapezoid box is calulated as below: Vol=width (W) x heigth (H) x upper depth (UD) + lower depth (LD) 2 W UD H LD Be sure to measure the inside dimensions.

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. A sealed enclosure should be filled up to 70-100% with acoustic wool. In a vented enclosure the speaker and port should be on the same side, otherwise a fade-out of some frequencies can occour. In most vehicles, except for SEDAN cars, the speaker and port should be directed backwards for best result.

THE SUBWOOFER

speaker cone chassis voice coil magnet dust cap

upper suspension

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.

spider

pole plate T-yoke
Technical Assistance DLS Svenska AB
P.O. Box 13029 SE-40251 Gteborg, Sweden Tel: +840060 Fax: +844021 E-mail: info@dls.se www.dls.se 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 + 840060 or send an e-mail 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.

IMPORTANT!

The speaker cone is made of magnesium, a material of low weight with excellent acoustic qualitys. We recommende you to NEVER 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 dont mount it properly it can get loose.

MOUNTING:

I THE HAT RACK OR BEHIND THE REAR SEAT.
To avoid rattle use a baffle of MDF or particle board, min 19 mm, for speaker mounting. Attach screws to all screw holes and tighten them even to avoid the speaker basket to get inclined.

CONNECTION:

+ Connected with a 6 dB passive low-pass x-over = 6,3 mH coil in series. X-over frequency 100 Hz.

BOX MOUNTING:

A speaker box is normaly made of MDF or particle board, min 19 mm. The box must be air-tight. Use sealing compound in all joints and at the cable entry. Mount screws every 10 cm. Both sealed, vented and most types of bandpass boxes are suitable for DLS MAGNESIUM subwoofers. The sealed box is good for hard rock and disco music and gives a good control of the cone. The vented box is more efficient and gives a 3 dB higher level than the sealed type. In small vented boxes the ports can become rather long. You can angle the port inside the box or mount it out from the box, for example when the ports are mounted through the hat rack. There must be a free space of at least the port diameter behind the port opening inside the box. Use ports with conical openings to avoid noise at low frequencies caused by air turbulence at the port edge.
Connected with a 12 dB passive low-pass x-over = 10 mH coil in series and a bipolar capacitor of 300 F in parallel. X-over frequency 95 Hz.

Active filter

DIRECTION OF THE BOX:
In a SEDAN-type car the best result is achieved when the box with both speaker and port is directed towards the rear seat. The port should not be directed up through the hat rack if the speaker is directed towards the back of the rear seat. In a large hat rack both speakers and ports can be mounted up through the hat rack with a box under it. A bandpass box is normally installed with all port openings up through the hat rack. In a small car like VW GOLF or similar, and also in station wagon types the box should be directed towards the back of the car. You can find more ideas about boxes in the DLS sound handbook which can be ordered from your dealer. It is also available in PDF-format on our WEB site On the back of this page you find some box examples for DLS MAGNESIUM subwoofers. If you have any questions about this product, contact DLS customer support center.
Mono bridge mode with an active low-pass filter before the amplifier. Read your amplifiers manual about connecting a sub in bridge mode. Two 4 ohm subs are normally connected in stereo since most amplifiers cant handle bridge mode connections below 4 ohms. We recommend the use of a subsonic highpass filter. This gives a better bass reproduction with less "rumble". In DLS and GENESIS amplifiers this feature is built-in. If you want to connect one or more subs in some other way, contact your local dealer for advice.

FACTS ABOUT DLS MAGNESIUM SUBS
Size Impedance Nom. power (RMS) Maximum power Frequency range Sensitivity Resonant freq. (Fs) Vas (liters) Qts Magnet diameter Mounting depth Mounting hole Outer diameter Weigth
P Box 13029.O. S-Gteborg, Sweden Tel. +840060 Fax +844021 E-mail: info@dls.se www.dls.se

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Amplifier
25 cm (10") 30 cm (12") 4 ohm 4 ohm 400 Watts 400 Watts 600 Watt 600 Watt 25 Hz- 2 kHz 20 Hz-2 kHz 89 dB 91 db 35,1Hz 31,7 Hz 28 60,2 0,31 0,mm 100 oz 180 mm 140 oz 130 mm 142 mm 234 mm 282 mm 262 mm 310 mm 6,7 kg 8,9 kg
BOXES FOR DLS SUBWOOFERS MW10 & MW12

VENTED BOX

SEALED BOX
Volume in liters and port size for different car- and music types, one speaker element.
Port diameter 3" (75 mm) outer diameter. One port. Car type: Music: Hard rock Port length Disco Port length Normal Port length Deepbass Port length Small car 16 liter 34 cm 19 liter 32 cm 22 liter 29 cm 24 liter 28 cm Sedan type 16 liter 33 cm 18 liter 32 cm 21 liter 30 cm 24 liter 29 cm Combi type 17 liter 33 cm 20 liter 31 cm 23 liter 29 cm 26 liter 27 cm Station wagon 18 liter 32 cm 21 liter 31 cm 24 liter 28 cm 28 liter 27 cm
Volume in liters for different car- and music types for one speaker element in a sealed box. Most suitable for hard rock and disco music.
Car type: Music: Hard rock Disco Small Sedan car type 15 liter 15 liter 18 liter 17 liter Combi type 16 liter 19 liter Station wagon 17 liter 20 liter
Car type: Music: Hard rock Disco Small Sedan car type 24 liter 24 liter 28 liter 27 liter Combi type 25 liter 29 liter Station wagon 27 liter 31 liter
Port diameter 3" (75 mm) outer diameter. One port. Car type: Music: Hard rock Port length Disco Port length Normal Port length Deep bass Port length Small car 24 liter 22 cm 28 liter 22 cm 32 liter 20 cm 37 liter 18 cm Sedan type 24 liter 22 cm 28 liter 21 cm 32 liter 20 cm 36 liter 19 cm Combi type 26 liter 22 cm 30 liter 20 cm 35 liter 20 cm 39 liter 18 cm Station wagon 27 liter 21 cm 31 liter 20 cm 37 liter 18 cm 42 liter 18 cm
3-CHAMBER BANDP ASS BOX WITH TWO DLS MW10
You can shorten the port length up to10% if neccesary. If you dont know what music type to choose use DISCO, its suitable for most listeners.
If you want to calculate som other box types than these you can use the DLS-box 98 computer program for bass box design. This is free to download from the DLS website www.dls.se or www.audiophiles.com. You will find it under the SUPPORT pages.

Speakers: 2 pcs of DLS MW10 Vb1 = 27 liters (Fb1 = 41 Hz) Vb 2 = 10 liters (Fb2 = 82 Hz) Port P1 = 1 pc 3" (75 mm), length 27 cm Port P2 = 1 pc 4" (110 mm), length 21 cm F-3dB = 44,1 Hz Car type: SEDAN, music type: NORMAL, SPL: 131 dB
2-CHAMBER BAND PASS BOX WITH TWO DLS MW10
P2 Vb2 Vb1 P1 NOTE! The number of speakers and ports are not correct in the drawing.
3-CHAMBER BANDPASS BOX WITH TWO DLS MW12
The box is identical with the box in the example above. (The number of ports are different)
Speakers: 2 pcs of DLS MW10 Vb1 = 27 liters (Fb1 = 41 Hz) Vb 2 = 13 liters (Fb2 = 82 Hz) Port P1 = 1 pcs 3" (75 mm), length 28 cm Port P2 = 3 pcs 3" (75 mm), length 21 cm F-3dB = 44,5 Hz Car type: SEDAN, music type: NORMAL, SPL: 131 dB
Speakers: 2 pcs of DLS MW12 Vb1 = 40 liters (Fb1 = 43 Hz) Vb 2 = 16 liters (Fb2 = 86 Hz) Port P1 = 1 pc 3" (75 mm), length 16 cm Port P2 = 2 pcs 4" (110 mm) in each chamber, length 25 cm F-3dB = 46,3 Hz Car type: SMALL, music type: NORMAL, SPL: 134 dB