(044)361-05-06 ICQ:495-089-192 (067)469-02-12 ICQ:613-211-859 (099)048-99-03 (093)672-77-76 User's Manual Car amplifier DLS MRA22 2-channel In the online store Winauto you also can buy auto amplifier DLS MRA22 . Delivery in Kiev and throughout Ukraine with payment upon receipt! http://winauto.
Car audio and car goods internet store Winauto Contents Installation…………………….……. Tools and materials needed………. Amplifier installation kit………….... How to install and operate the DLS Marine Audio amplifiers MRA22 MRA31 MRA41 to .u a Wiring Power and Remote……………..…. Input and controls Input wiring Hi & Low level……….. Parallel input.................................. Hi/Low input switch........................ Fuses / Protect light....................... Input level control...........................
Car audio and car goods internet store Winauto MRA22, MRA31, MRA41 Installation Before you begin installation Before you begin you need to read the manual, to have some tools, cables and other material available. There is one such list of material on the following page. Amplifier location Disconnect Battery DLS logo on amplifier cooling flange The DLS logo on top of the amplifier is attached with two 1 mm hex. screws.
Car audio and car goods internet store Winauto MRA22, MRA31, MRA41 Wiring Tools and material needed Connect power and remote Connect the fuse holder as close to the vessel battery + as possible, using AWG 8 = 10 mm2 or heavier cable. Use a ring crimp terminal cable to connect to battery +. Apply silicon grease to the fuse to prevent corrosion. Use a 50 Amp fuse for both amplifiers.
Car audio and car goods internet store Winauto MRA22, MRA31, MRA41 Inputs may be low level from the RCA output of the car stereo or high level from the car stereo speaker output. Low level = RCA is to prefer for the best sound quality. Important On MRA22 use either the low level or high level input, do not use both at same time. Low level input Use a pair of shielded stereo audio cables with RCA type jack. RCA cables are available in different lengths up to 5,5 meters.
Car audio and car goods internet store Winauto MRA22, MRA31, MRA41 Input Level control Low Pass Filter (LPF) The input level control, 5V – 0,25 V, Level 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 5V 0,25V the way ( counter-clockwise at 5V ). 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.
MRA41 in au to .u a Car audio and car goods internet store Winauto w The MRA22 is a two channel stereo amplifier. It has a variable high pass filter, (HPF) 15-500 Hz. It has also a variable low pass filter, (LPF) 50-500 Hz for subwoofer use. HPF LPF 80Hz 200Hz 50Hz 220Hz 50Hz 500Hz 15Hz 500Hz Off On Off On The MRA41 is a four channel amplifier. It is mostly used with a front system connected to channels C/ D and a subwoofer connected to channel A/B.
Car audio and car goods internet store Winauto MRA22 Speaker wiring MRA 22 One subwoofer connected in bridge mode to MRA22 HPF 50Hz 220Hz w Filter settings in au to .u a Two fullrange speakers to MRA22 NOTE! 4 ohm minimum load when using bridge mode connection. Lower impedances may damage the amplifier. In bridge mode the amplifier sees a 4 ohm load as 2 ohm.
Car audio and car goods internet store Winauto MRA31 Speaker wiring MRA 31 Two fullrange speakers to channel A/B One (or two) 4 ohm subwoofers to channel C + + C CH - - HPF in au 90Hz 120Hz 50Hz 150Hz Off On Filter settings channel C w 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 turn on the HPF-filter. The typical setting is then around 60 – 80 Hz. to .
Car audio and car goods internet store Winauto MRA41 Speaker wiring MRA 41 - three different wiring examples 1. Four fullrange speakers to MRA41. One pair in front and one pair in rear. to .u a 2. Two fullrange speakers and one subwoofer to MRA41.
Car audio and car goods internet store Winauto MRA41 Speaker wiring MRA 41 3. One 2-way speaker system to MRA41 using active crossover between tweeter and midrange / bass D Tweeters Filter settings A/B Channels LPF HPF 50Hz 220Hz in au Midrange to .u a C Multiply w 80/800Hz 200/2(k)Hz Off On50/500Hz 15Hz 500Hz x1 x10 500/5(k)Hz Off On We want a crossover point of 4 kHz between tweeter and midrange. If you for some reason want to limit the low bass reproduction switch on the HPF-filter.
Car audio and car goods internet store Winauto MRA22, MRA31, MRA41 Testing Troubleshooting Before you finish the installation, you should do the following tests to make sure the wiring is correct and everything is operating properly. If problems occour during the installation, or later, this guide might help you to find out whats´s wrong. THE AMPLIFIER IS DEAD: 1. Check power lead, ground and remote connections at the amplifier using a multi meter. 2. Check the battery terminal connections. 3.
Car audio and car goods internet store Winauto MRA22, MRA31, MRA41 Professional Tip: Professional Tip: NOISE PROBLEMS SPEAKER POLARITY CHECK. WHINING NOISE VARYING WITH ENGINE REVOLUTIONS: 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. Do this: 1. Rewire the power supply (12 V) to source unit direct from battery.
Car audio and car goods internet store Winauto MRA22, MRA31, MRA41 Specifications MRA 22 MRA41 Number of channels Power output, 4 ohm (0,1% THD) Power output, 2 ohm (0,2% THD) Power output, 4 ohm bridged Signal to noise ratio, A-weighted Damping factor Frequency response Input impedance, low level Input impedance, high level High level input with auto start Low output (RCA output) Input sensitivity Grand bass adjustable frequency Grand bass adjustable gain Filter highpass /subsonic Filter lowpass * can
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