DLS RA20 How To Install And Operate Download | Manualshive

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DLS Svenska AB

P.O. Box 13029

SE-40251 Göteborg, Sweden

Tel: +46 31 840060

Fax: +46 31 844021

E-mail: [email protected]

www.dls.se

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Summary of Contents for RA20

Page 1: ...n the conditions in the country where it is sold If the amplifier is returned for service please include the original dated receipt with the product Technical Assistance For technical assistance ask the shop where the product was sold or the distributor in your very coun try You can always phone the DLS Helpdesk in Sweden 46 31 84 00 60 or send an e mail to info dls se Information can also be foun...

Page 2: ...ve a compact design that allows great flexibility in mounting You can mount it under a seat or in the trunk 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 Do not cover the amplifier with carpets or hide behind trim panels Do not mount the amplifier in an inverted or upside down position Check a...

Page 3: ...u buy the items separately 20 25 feet 6 7 5 meter power cable minimum AWG 5 16 mm2 or heavier 1 pc of fuseholder to install close to the car battery fuse 50 Ampere 20 feet of AWG 15 1 5 mm2 wire for remote turn on off cable from radio RCA cable for input from radio 20 feet or 5 meter for trunk installations 12 feet or 2 3 meter for under seat installations Two ring crimp terminals one for connecti...

Page 4: ... position Low level Connect the radio power antenna lead remote turn on off from the car stereo to the amplifier remote connection This turns on the amplifier whenever the car stereo is turned on You can either use the built in remote cable in the RCA cable itself or use a separate cable as seen on page 4 Sometimes a small disturbance may enter the amplifier coming from the remote voltage through ...

Page 5: ... from the car stereo speaker output Low level RCA is to prefer for the best sound quality RA40 high level input for ch 3 4 The RA40 four channel amplifier is connected likewise however we have four channels You can feed all four channels using high level in put or feed two channels from RCA and two channels using high level input from rear speaker cables 5 RA20 RA40 CH2 CH1 CH4 CH3 Hi level input ...

Page 6: ...her frequencies A typical setting is 50 80 Hz The filter can be switched IN OUT and is available on both RA20 and RA40 6 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 Turn the volume control down just a bit On the amplifier increase the input level control clockwise or to the right until you...

Page 7: ...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 Filter settings NOTE 4 ohm minimum load when using bridge mode connection Lower impedances may damage the amplifier In bridge mode the amp...

Page 8: ...on The typical setting is then around 60 80 Hz The LP filter switch should be in OUT position Filter settings channel 3 4 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 on the HP filter The typical setting is then around 60 80 Hz RA40 Filter settings channel 1 2 The LP filter will allow lo...

Page 9: ...l ation 2 Install one or two fans to cool down the heat sink 3 Overheating can also be caused by an impedance load below the level permitted NO OUTPUT FROM ONE OR MORE SPEAKERS Check the following 1 Balance control position 2 Fader control position 3 Speaker cable connections to both amplifier and drivers 4 Signal lead plugs and cables 5 Change left and right signal lead plugs in the amplifier to ...

Page 10: ...attery 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 tr...

Page 11: ...w pass 40 125 Hz No Phase shift 0 180 degrees contiously Yes No Grand bass adjustable gain 40 Hz 0 18 dB No Pre amp configuration on Rear channel Filter highpass No 20 150 Hz Filter lowpass No 40 125 Hz Phase shift 0 180 degrees contiously No Yes Grand bass adjustable gain 40 Hz No 0 18 dB can be switched in out Filter slope 12 dB octave 12 dB octave Protection current thermal current thermal Max ...

Page 12: ...DLS Svenska AB P O Box 13029 SE 40251 Göteborg Sweden Tel 46 31 840060 Fax 46 31 844021 E mail info dls se www dls se ...

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