DLS DLS CAD11 Specifications

Hints and advices for car sound builders using DLS amplifiers and speakersDLS Svenska ABP.O. Box 13029, SE-402 51 Göteborg, SwedenTel. +46 31 84 00 60

THE CABLES - AN IMPORTANT LINKNo chain is stronger than it´s weakest link !It´s not unusual that people buy expensive amplifiersand speakers but forge

INSTALLATIONTHE HEAD UNITThe heart in a car stereo installation is the car ste-reo, often called head unit. Today it´s normally a tunerwith an externa

An important part of the installation is of course thespeakers.How they are installed varies from car to car anddepends upon the possibilities in each

DLS SOUND HANDBOOK - INSTALLATIONCENTER CHANNEL SPEAKERA center channel speaker can be used to improve thesound image in installations where the speak

HAT-RACK MOUNTINGThe best sound stage for front seat listeners isachieved with door- or kick-panel mounting. Incompetition cars the front system combi

WHY DO WE NEED SPEAKER BOXES?A Hi-Fi speaker for home use is always mounted in abox to reproduce the best possible sound.Traditional mounting in cars

BANDPASS BOXESIn all bandpass boxes the speakers are hiddeninside the box, all sound is coming out through theports. There are different types of band

7:th order bandpass boxSpeaker mounted in a vented box playing intoanother vented box. All ports going out.What is valid for 6:th order boxes is also

++--+2 ohm Two 4 ohm speakers in parallel Two speakers in series.8 ohm+++---We don´t recommend this connection. Four speakers in series/parallel to 4

DLS SOUND HANDBOOK - TROUBLE SHOOTING GUIDE18Installing car sound can sometimes causeproblems. If you are not satisfied with the soundyou could have m

INTRODUCTIONWe have made this handbook as a small help forthoose who want to do a first class car sound instal-lation.This book advices the reader in

DLS SOUND HANDBOOK - SPEAKER BOXESBASS BOXES IN DIFFERENT TYPES OF CARS1. SMALL CARS LIKE VW GOLF, PEUGOT 306 AND SIMILARIn this car type the bass bo

Most boxes should be damped inside with syntetic(acoustic) wool (do not use any rockwool types).Attach the damping material on the wall opposite fromt

BASS BOXES FOR OLDER SUBWOOFERSSome bass box examples for old DLS subwoofersSPEAKER & CAR TYPE: STATIONTYPE OF BOX: SEDAN/SMALL WAGON DLS 5508: Mu

W108B W308B W310B W312BSize 20 cm (8") 20 cm (8") 25 cm (10") 30 cm (12")Impedance 4 ohm 4 ohm 4 ohm 4 ohmNom. power (RMS) 100 W

TECHNICAL SPECIFICATIONS FOR DLS CLASSIC SUBWOOFERSOA10 OA12Size 25 cm (10") 30 cm (12")Impedance 4 ohm 4 ohmNom. power (RMS) 180 W (max 36

W610 W612 W710 W712Size 25 cm (10") 30 cm (12") 25 cm (10") 30 cm (12")Impedance 4 ohm 4 ohm 4 ohm 4 ohmNom. power (RMS) 180 W (m

TECHNICAL SPECIFICATIONS FOR DLS REFERENCE SUBWOOFERSMW110 MW112 MW10 MW12Size 25 cm (10") 30 cm (12") 25 cm (10") 30 cm (12")Impe

UR10 UR12 UR15Size 25 cm (10") 30 cm (12") 35 cm (15")Impedance 2 x 4 ohm 2 x 4 ohm 2 x 4 ohmNom. power (RMS) 400 W (max 700) 500 W

TECHNICAL SPECIFICATIONS FOR DLS ULTIMATE SUBWOOFERSSP12 SP15Size 30 cm (12") 35 cm (15")Impedance 2 x 2 ohm 2 x 2 ohmNom. power (RMS) 500

Technical specifications for DLS ULTIMATE Iridium 10Iridium 10Size 25 cm (10")Impedance 2 x4 ohmNom. power (RMS) 500 W (max 800)Frequency range

FORMULASIt´s easier to understand some parts in this book ifyou know some of the formulas on this page. Theyare also useful at many other occasions.Bo

Technical specifications for DLS ULTIMATE Nobelium 10Size 25 cm (10")Impedance 2 x4 ohmNom. power (RMS) 500 W (max 800)Frequency range 25 Hz -

Nobelium12 (VC:s in parallel to 2 ohm)Vb1 Vb2 Port Vb224,46 32,12 2 x10,2 x 27 cm0,86 ft31,13 ft32 x 4" x 10,6" (US)F3 Vb1: 45 Hz, Vb2: 94 H

31SOME USEFUL TABLES Speaker sens- 88 91 dB 95 dB 100 dB 105 dB 110 dB 115 dB 120 db 125 dB itivity in dB 95 98 dB 102 dB 107 dB 112 dB 117 dB 122 dB

DECIBEL - dBExamples of fixed dB relations:For voltage and current:dB Amplification0 dB 1 time1 dB 1,1 times3 db 1,4 times6 dB 2 times (double)10 dB 3

4DLS SOUND HANDBOOK - AMPLIFIER FACTSDLS REFERENCE RA20 RA25 RA30 RA40 RA50FILTER CONFIGURATION RA50Ch. 1 & 2High-pass 50 - 140 Hz*Low-pass 250

5FILTER CONFIGURATION CA 41& CA 51Ch. A & BHigh-pass 15 - 500 Hz*Low-pass 50(500) - 500(5k) Hz*(x 10 switch)Ch. C & DHigh-pass 15(150)

CROSSOVERSThe ideal speaker, able reproduce all frequencies fromlowest bass to highest treble, is not yet invented.Instead we have to use two or more

7PASSIVE 6 dB LOW-PASSPASSIVE 6 dB HIGH-PASSA 6 dB x-over filter has a 6 dB slope / octave. Theoutput from an amplifier is only a quarter after fallin

PASSIVE 12 dB LOW-PASS PASSIVE 12 dB HIGH-PASSA 12 dB x-over filter has a 12 dB slope / octave. A 12 dB filter is a combination of a coil and acapacit