User manual DLS CLASSICAMPENG03

[. . . ] Contents How to install and operate the DLS CA20, the CA21, CA40 and the CA50 amplifiers. Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CA20 and CA21 speaker wiring: Front speakers. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2 3 3 3 4 5 6 6 7 8 8 Welcome! This owners manual is written in easy english and uses a lot of drawings to simply the installation and use of the above amplifiers. Your DLS amplifiers must be installed correctly in order to work well. [. . . ] With the Hi/Low input swich set to Hi, the amplifier turns on automatically on high input. You dont need to connect a separate remote wire from your head unit. RCA Output Input Output A A Use RCA Outputs to connect additional amplifiers (not available on CA50). B B 5 CA20, 21, 40 & 50 Hi / Low level input switch To ensure best possible performance from the amplifiers a switch have been installed to select between Hi and Low input. The drawings show where the switch is situated on the respective amplifier. When using High Level input: Set the switch to position "Hi / Level" When using Low level input: Set the switch to position "Low / Level" If the switch is set to wrong position, the amplifier still works, but the risk for disturbances or distortion increases. Power Light / Protect light Power (Green) Protect (Red) The power light (green ) comes on when the amplifier is turned on. The protect light ( red ) comes on when the amplifier shuts down from overheating, or a short circuit ( speaker failure) Crossovers All DLS Classic amplifiers include high pass filter ( HPF ) and lowpass filters ( LPF). All filters are continously variable and all filters can be switched on and off. CA20/21 CA40 CA50 High Pass Filter / Subsonic filter HPF Subsonic 40Hz 100Hz 50Hz 220Hz Input Level control Level 2V 0, 7V 5V 0, 25V 15Hz 500Hz 15Hz 150Hz Off On Off On CA20 The input level control, 5V ­ 0, 25 V, matches the output of your radio to the input of the amplifier. Choose the slope and the setting that sounds best in your car. CA20, 21, 40 & 50 Crossovers of CA40 The CA40 is a four channel amplifier. It is mostly used with a front system connected to channels C and D and a subwoofer connected to channel A + B. Please observe the proper settings of the channel A & B LPF multiplier switch and of the channel C & D HPF multiplier switch. The CA40 can also be used to feed a 2­way front system with active crossovers between midbasses and tweeters. This is described in a speaker wiring and filter setting example on page 10. Channel A and B is equipped very much like the CA20 and CA21, however the LPF has a multiplier. Thus the frequency range of the LPF can be varied from 50 Hz ­ 500 Hz in the x1 position or 500 Hz ­ 5 kHz in the x10 position. This way we can use this amplifier to feed a 2-way system, where the midbasses are feed from 80 Hz ­ 4 kHz. The tweeters connected to channel C and D , operate from 4 kHz upwards using the HPF in multiplier position x 10 150 Hz ­ 5 kHz. The Lowpass filter is switched off. LPF Multiply 80/800Hz 200/2(k)Hz Off On 50/500Hz 500/5(k)Hz x1 x10 HPF Multiply 50/500Hz 220/2(k)Hz Off On 15/150Hz 500/5(k)Hz x1 x10 Crossovers of CA50 The CA50 is a five channel amplifier. On channel A, B, C &D the filter confoguration is exactly the same as for CA40. Channel E is a subwoofer mono channel with a lowpass filter adjustable from 50 to 500 Hz. The subsonic filter has a fixed frequency of 25 Hz. 7 CA20, 21 REM Speaker wiring CA 20 & CA21 Two fullrange speakers to CA20 or CA21 One subwoofer connected in bridge mode to CA20 or CA21 Filter settings HPF 50Hz 220Hz NOTE!Filter settings HPF 50Hz 220Hz 15Hz 500Hz Off On With the HPF-filter in OFF position the amplifier allows the speakers to play fullrange. If you for some reason want to limit the low bass reproduction switch on the HPF-filter. The typical setting is then around 25 ­ 40 Hz. LPF 80Hz 200Hz 15Hz 500Hz Off On LPF 80Hz 200Hz The HPF filter is here used as subsonic filter to take away the very deepest frequencies. [. . . ] if not, check wiring connections at amplifier and speakers. 2. Test speaker connections Make sure the speakers are connected right. Use the balance control on the head unit to make sure right channel is on right speaker etc. If speakers don´t play at all, one or both speaker wires may be disconnected. 12 CA20, 21 & 40 Professional Tip: NOISE PROBLEMS WHINING NOISE VARYING WITH ENGINE REVOLUTIONS: Do this: 1. Check quality of earth strap connection from battery negative terminal to chassis. [. . . ]