User manual DLS AMPD1000E

[. . . ] OWNERS MANUAL CAR AUDIO AMPLIFIER D 1000 Digital class "D" mono amplifier for subwoofer use 1000 watts output power into 1 ohm load ly ugh oro tall s al th anu rt to in m this u sta ead re yo R o bef TE!NO DLS Svenska AB Box 13029 SE-402 51 Göteborg Sweden Phone +46 31 84 00 60 Fax +46 31 84 40 21 E-mail: info@dls. se www. dls. se TABLE OF CONTENTS Congratulations, you have just purchased the finest Car Audio amplifier that today´s technology can offer. DLS offers a series of high quality car audio products for real music lovers, and we are sure that you will enjoy a high class car sound for many years. Read the owners manual first! To maximize the performance of your system, we recommend that you thoroghly acquaint yourself with it´s capabilities and features. Please take your time to study this manual before starting the installation. [. . . ] High quality cables normally requires a separate wire for this. Connect between the head units remote cable (often the same cable that´s used for automatic power antennas) and the REM-terminal on the amplifier. If you want to start more than one amplifier using the remote output, the current load might be too high for som head units. High currents may damage the head unit, check in the manual for the head unit. Sometimes you must add a relay to the remote circuit that takes care of the higher current. If you are uncertain of how to connect the relay, ask your local DLS dealer for advice. PROTECT YOUR CABLES! To prevent the cable insulation from beeing damaged over sharp metal edges we recommend the use of cable protection tubes or similar. A damaged cable insulation could cause serious damage to the amplifier not covered by any guarantee. SPEAKER POLARITY CHECK. All speakers in a car audio system should be connected in phase (the same polarity). All speaker cones must move in the same direction. Out of phase speakers will cause a lack of bass, and a poor stereo soundstage. Checking polarity: Hold the - connection of the speaker wire to the terminal of a 1, 5 Volt flashlight battery. Tap the + wire on to the + terminal of the battery, and observe the movement of the cone. The cone should move outwards when the wire touches the battery, and inwards when the battery is removed. If it is the other way around, the speaker has been connected backwards and it must be removed and connected correctly. If your system also has a subwoofer connected through a passive 6 or 12 dB crossover, try to connect this with various polarity and judge what sounds best. The phase shift in passive crossovers sometimes makes it necessary to change polarity. + Battery 1, 5 Volt + - NOTE!Tweeters can not be tested this way, double check the connections instead. 2. 4 SPEAKER CONNECTION There are double speaker connections internally connected to each other. The reason for having double connections is for making it easier to connect more than one speaker. The gold plated terminals will directly recieve speaker cables up to 6 mm 2 (9AWG). Always use high quality speaker cables such as DLS SC 2x2, 5 or SC 2x4. Connect the speaker + (marked with + or a red dot) to the amplifier + terminal, and the speaker - to the amplifier -. When fitting the cables to the terminals, remove only 10 mm of the insulation. Twist the wire strand together and insert the wire after loosening the terminal screw. [. . . ] Ensure that all equipment is grounded at the same place. Check quality of earth strap connection from battery negative terminal to chassis. Disconnect signal cables from amplifier to see if noise disappears. Test this by laying a new cable over the seats and reconnecting to the amplifier. [. . . ]