User manual DLS RA40

[. . . ] There is one such list of material on the following page. Disconnect Battery Before starting the installation, always disconnect the negative terminal of the battery. Amplifier location Important Allow air circulation around the amplifier. The DLS Reference series of amplifiers have a compact design that allows great flexibility in mounting. When you select a location, do remember that the amplifier generates a lot of heat. Choose a location where air can circulate freely around the amplifier. [. . . ] When using High Level input: Push in the button to position "High Level" When using Low level input: Push out the button to position "Low Level" Hi level auto start switch To ensure best possible performance from the amplifiers when used with high level input a switch is installed to select between Automatic amplifier start and remote wire start. When using High Level input with automatic start: Push the button to position IN When using High level input with remote wire start: Push out the button to position OUT NOTE!Some head units use BTL output IC:s that have a constant 12 Volt + on the speaker terminal, also when shut off (the Power LED indicator lights constantly even when the head unit is off). In this case you have to use a separate remote wire connected to the REMOTE-terminal instead. 5 CH2 CH1 Hi level input socket on amp. Automatic turn on when using high level input. With the "Input selector switch" set to High level and the "High level Auto Start" switch set to IN, the amplifier turns on automatically on high input. You don´t need to connect a separate remote wire from your head unit. If you want to use high level input but use a remote start wire, just set the "High level Auto Start" switch to OUT. RA20 & RA40 Input Level control The input level control, 7V ­ 0, 2 V, matches the output of your radio to the input of the amplifier. After installation is complete, make sure the input of the amplifier is turned down all the way ( counter-clockwise at 7V ). GAIN Crossovers TheDLS Reference amplifiers include high pass filter ( HP) and low pass filters (LP). All filters are continously variable and all filters can be switched on and off. The filter can be switched off if you want to run the amplifier in full range mode. This is the crossover configuration on RA20 & RA40: RA20: LP-filter 40 - 125 Hz HP-filter 20 - 150 Hz RA40 CH1 & 2: HP-filter 20 -150 Hz RA40 CH3 & 4: HP-filter 20 - 150 Hz LP-filter 40 - 125 Hz 7V 0, 2V Play a tape or CD, make sure all bass or treble settings or equalizer are flat, and turn the volume of the radio up until you just start to hear distortion. Filter settings The HP-filter is here used as subsonic filter to take away the very deepest frequencies from the subwoofer. The typical setting is around 25 ­ 40 Hz. Filter settings With the HP-filter in OUT position the amplifier allows the speakers to play fullrange. If you for some reason want to limit the low bass reproduction switch IN the HP-filter. The typical setting is then around 60 ­ 80 Hz. The LP-filter will allow low frequencies only and blocks higher frequencies. BASS is used to increase the bass volume with a center frequency of 40 HZ. You can select the amplification between 0 dB ( no amplification ) and +18 dB (full amplification). This is very useful when you want to adjust the bass sound for best front stage image. Start on 0 and turn the control slowly clockwise until you experience that the bass sound is coming from the front. If you dont get the result you want, also try to phase reverse the subwoofer connections and make a new adjustment. 7 The LP-filter should be OFF (switch in OUT-position). RA40 Speaker wiring RA40 RA40 is a 4-channel stereo amplifier. [. . . ] you will have to remove the door sill trim and the carpet. Professional Tip: Securing wires Use wire ties to bundle together when possible. (But never bundle speaker wires or signal cables together with power wires. Professional Tip: Crimp connections Purchase crimp connectors and crimping tool. Crimp tightly 10 Professional Tip: Speaker and power wires Do not run speaker and power wires next to each other. Run speaker and power wires on opposite sides of the car. RA20 & RA40 Specifications DLS CLASSIC RA20 RA40 4 AB Number of channels 2 Working mode AB Power output at 13, 8 Volt, 20 Hz - 20 kHz, max 0, 1 % THD RMS power out, 4 ohm RMS power out, 2 ohm RMS power out, 4 ohm bridged THD @1 W Signal to noise ratio, A-weighted Damping factor Frequency response +/- 0, 5 dB Input impedance, low level Input impedance, high level High level input with auto start Input sensitivity Pre amp configuration on Front channel: Filter high pass Filter low pass Phase shift 0- 180 degrees contiously Grand bass adjustable gain @ 40 Hz Pre amp configuration on Rear channel: Filter highpass Filter lowpass Phase shift 0- 180 degrees contiously Grand bass adjustable gain @ 40 Hz * can be switched in/out Filter slope Protection Max cable size, DC input Max cable size, speakers Power consumption: Idle Maximum Fuse Dimensions HxWxD(mm) Dimensions (inch) Weight 2 x 130 W 2 x 220 W 1 x 440 W < 0, 1% >100 dB >200 10 Hz - 50 kHz >10 kohm 330 ohm Yes 0, 2 - 7V 20 - 150 Hz* 40 - 125 Hz* Yes 0 - +18 dB No No No No 12 dB/octave current & thermal 4 AWG, 21 mm2 5 AWG, 16 mm2 0, 6 A 50 A 2 x 25 A 59x359x245 2, 33x14, 1x9, 65 3, 8 kg (8, 4 lbs) 4 x 75 W 4 x 110 W 2 x 220 W < 0, 1% >100 dB >200 10 Hz - 50 kHz >10 kohm 330 ohm Yes 0, 2 - 7V 20 - 150 Hz* No No No 20 - 150 Hz* 40 - 125 Hz* Yes 0 - +18 dB 12 dB/octave current & thermal 4 AWG, 21 mm2 7 AWG, 10 mm2 0, 9 A 50 A 2 x 25 A 59x359x245 2, 33x14, 1x9, 65 4, 0 kg (8, 8 lbs) NOTE! 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