AMPLIFIER OWNERS MANUAL - Cerwin-Vega
Contents
1. PIE O alla OO ri T El Status LED s These lights indicate when the amplifier is powered up normally and when there is a protection fault SX500 1 Only See the Troubleshooting section for details on what these useful indicators can tell you if there s a problem HPF Crossover Adjustment Use this adjustment to select the crossover point Remember that you must select the High Pass position HPF of the crossover adjustment switch first The range of adjustment is limited between 50 250 Hz Vega Bass _ This control adds 0 to 12dB of boost at 45Hz On the SX500 1 the frequency is variable Be cautious when adding boost to some subwoofer systems as they may not be able to handle the additional low frequency boost In the OdB position no bass boost is added LPF Crossover Adju2. ae AMPLIFIER OWNERS MANUAL INTRODUCTION Dear Cerwin Vega Mobile Customer Thank you for making Cerwin Vega Mobile your choice for high performance car audio products At Cerwin Vega Mobile our goal is to produce products of unsurpassed quality We believe you will not find a better value anywhere in the mobile audio environment To ensure that your new Cerwin Vega Mobile amplifier provides years of enjoyment you should consider having it installed by a professionally trained technician They have the knowledge to make your new amplifier perform its very best WARNING Prolonged exposure to sound pressure levels in excess of 100dB can cause permanent hearing loss Cerwin Vega Mobile amplifiers can exceed that level so please exercise restraint when listening and enjoying your new amplifier GENERAL PRECAUTIONS This unit is designed for negative ground 12V DC operation only e Total system impedance must not be less than 2ohms for SX220 2 amp SX440 4 1ohm for SX500 1 e Avoid installing the unit where It would be subject to high temperatures such as from direct sunlight or hot air from the heater It would be exposed to rain or moisture It would be subject to dust or dirt Do not cover the unit with carpet or wires Do not use the unit with a weak auto battery Optimum performance depends on a normal battery supply voltage e For safety reasons keep the volume of your car audio system moderate while driving y
3. 18 inches of the positive battery post It is also important to upgrade the connection between the negative battery post and the chassis of the vehicle This greatly reduces possibilities of weak electrical links in the circuit Speaker Output Terminals Connect your speakers to these terminals Stereo connections are connected as labeled Bridged connections use the LEFT and RIGHT as the two connections The 2 and 4 channel amplifiers will perform into 2 Ohm stereo loads or 4 Ohm bridged loads DO NOT run 2 Ohm bridged loads on these amplifiers Remote Level Control SX500 1 Only This port is for the remote level control included The control is intended to allow the user to control the level of gain up to the maximum adjustment level set on the amplifier The control does not add additional boost it only attenuates the setting that is fixed at the amplifier s control panel Phase Adjustment SX500 1 Only This control allows you to adjust the phase of your subwoofer in time with your mids and tweeters 0 or 180 degrees of adjustment capability This is EXTREMELY useful to get the best and most bass out of your system Sub Sonic Adjustment SX500 1 Only This control allows you to remove the unwanted sub sonic frequencies below the tuning frequency of a ported enclosure This helps to protect the woofer from over excursion Warranty Cerwin Vega Mobile warrants all amplifiers and speakers to be free of defects in materi
4. Weak Bass One or more speaker connections and are reversed or are wired out of phase PRODUCT SPECIFICATIONS RMS Power Rating 4 Ohm 14 4v 2 Ohm 14 4v 1 Ohm 14 4v 4 Ohm Bridged Power Supply Topology Frequency Response Battery Voltage Range for Operation S N Ratio Total Harmonic Distortion THD 4 Ohm per Channel THD 2 Ohm per Channel THD 1 Ohm per Channel Input Sensitivity Low Input Level Input Impedance Low Input Level Crossover Variable High Pass Variable Low Pass Fuses Dimensions L X W X H X220 2 n a 220 x 1 Full PWM Class D 20Hz 30KHz 10 8VDC 15 0VDC gt 80dB lt 0 2 lt 0 4 lt 0 7 150mV 5V 22K Ohm 50Hz 250Hz 50Hz 250Hz 6 6 x 7 x 1 85 SX440 4 n a 220x2 Full PWM Class D 20Hz 30KHz 10 8VDC 15 0VDC gt 80dB lt 0 2 lt 0 4 lt 0 7 150mV 5V 22K Ohm 50Hz 250Hz 50Hz 250Hz 2 x 20A 9 35 x 7 x 1 85 SX500 1 n a Full PWM Class D 20Hz 250Hz 10 8VDC 15 0VDC gt 85dB lt 0 2 lt 0 4 lt 0 7 150mV 5V 22K Ohm nla 50Hz 250Hz 2 x 25A 9 35 x 7 x 1 85 2 CHANNEL AMPLIFIER SX220 2 ore 0000
5. of your amplifier Connect the ground directly to the car chassis to minimize resistance and avoid any noise problems 5 Add an external fuse on the amplifier s positive power lead and connect it as close as possible to the vehicle s battery terminal Use a rating that equals the total current consumption at full output of all amplifiers in the system This external fuse will protect the vehicle from short circuits that can cause a fire WIRING INSTRUCTIONS Power Connection The main power cable must be connected to the positive terminal of the vehicle battery to provide an adequate voltage source and minimize noise There must be an inline fuse within 18 inches of the battery Connecting the battery terminal lead to any other point will reduce the power output and may cause noise and distortion Use only 4 gauge or larger wire for this lead and connect it to the terminal of the battery with system fuse inline Do not install the fuse in the fuse holder until the entire installation is completed Ground Connection The ground terminal GND connection is also critical to the correct operation of the amplifier Use a wire of the same gauge as the power connection and connect it between the ground terminal GND of the amplifier and a metal part of the vehicle close to the mounting location This wire should be as short as possible and any paint or rust at the grounding point should be scraped away to provide a clean metal surface to
6. which the end of the ground wire can be screwed or bolted Remote Turn On Connection The amplifier is turned on by applying 12V to the remote turn on terminal REM The wire lead to this terminal should be connected to the remote lead from the car stereo which will provide the 12V only when the car stereo is turned on If the car stereo does not provide a remote lead the remote turn on lead may be wired to an accessory terminal in the car s fuse block This will turn the amplifier on and off with the ignition key regardless of whether the car stereo is on or off Speaker Connections Depending on the type and number of speakers used with the amplifier wire them to the speaker terminals as per the appropriate wiring diagram see below For most applications 18 gauge wire is adequate for the speaker leads For leads in excess of ten feet 16 gauge wire is recommended When wiring the speakers pay careful attention to the polarity of the terminals on the speakers and make certain they correspond to the polarity on the amplifier Do not ground any speaker leads to the chassis of the vehicle Please see your authorized Cerwin Vega Mobile dealer for specific wire recommendations TYPICAL SPEAKER CONNECTIONS TO YOUR CERWIN VEGA MOBILE AMPLIFIER Most aftermarket source units will provide you with at least one pair of RCA outputs to provide a clean low level input for your amplifier RRFULLRANGE LRFUI SET UP INST
7. Level Control Will allow you adjust the sub level from the front of the vehicle SX500 1 only STATUS LED S Power After the orderly connection of the three power terminals the LED indicator shines green and goes out when the amplifier is switched off Protect Your Cerwin Vega Mobile amplifier is equipped with overload protection Immediately upon overloading due to short circuit or extreme temperature the protection is activated and the red LED indicator is illuminated The amplifier is now protected against damage In case of thermal protection a short cooling time must be allowed after which the amplifier automatically resumes operation QUICK TROUBLESHOOTING GUIDE No Power Check that all the fuses are good If so check to be sure that the remote turn on lead is properly connected and that both Power and Ground connections are secure No Sound Check to make sure input cables RCA are installed properly Also check all speaker connections both at the amplifier and at the speaker itself No Sound Red LED Check that the speaker leads are not touching each other or the vehicle chassis Be sure the total impedance of the speakers is not too low for the configuration Poor Sound Quality Distortions Check the amplifier Input Sensitivity setting It may need to be turned down counter clockwise Check that the speaker wires are not touching the vehicle chassis Verify that the vehicle battery is properly charged
8. RUCTIONS Input Level Control The input level control is used to match the input level of your Cerwin Vega Mobile amplifier with the output level of your source unit Contrary to belief turning the gain up does not give your any more power whatsoever While it may appear to get louder when you turn your input sensitivity up in reality you are just taking away from the working range of volume on your source unit To set the input level control properly start with the input sensitivity all the way counter clockwise Use a music source you are familiar with so you can tell when it starts to distort Turn the volume on your source unit 3 4 of the way to full volume then slowly turn the input sensitiv ity clockwise until you can hear the music start to distort Then simply just turn back a bit counter clockwise until the distortion is no longer audible Crossover Your Cerwin Vega Mobile amplifier is equipped with a internal crossover for easy system set up High Pass Control The amplifier will send frequencies above the cutoff point to pass through to your speakers Low Pass Control The amplifier will send frequencies below the cutoff point to pass through to your speakers Phase Control Lets you control the output phase to your speakers 0 180 degrees Available on SX500 1 only Subsonic Filter Controls the lowest frequency that will pass through to the speaker Available on SX500 1 only SPECIAL FUNCTIONAL FEATURES Wired Sub
9. al or workmanship for a period of 1 year Warranty Procedure Cerwin Vega Mobile strongly suggests all warranty claims should be handled through an authorized dealer Because of the technical nature of our products performance problems can often be the result of improper usage or installation An authorized retailer can help determine if this is the case and will save you the time of returning an item that is not actually defective For all VEGA subwoofer models the cone is to be removed from the basket as com pletely as possible Cut the surround and then the spider After this the cone should lift out For VEGA coaxial models the tweeter needs to be broken off and sent in with the cone All returns must have the serial number taped to the cone The serial number can be found on the basket on all speakers and underneath the spider attached to the top of the magnet plate Please remove the sticker and tape it to the cone This process will save everyone on shipping costs and allow us to check and replace speakers much faster For all VMAX models as well as all amplifier models the defective unit needs to be returned For speaker systems such as VMAX component models only return the defective part i e midbass tweeter or crossover Shipping Once you have your RA number ship your return to Cerwin Vega Mobile ATTN Customer Service Dept 6915 W Frye Road Chandler AZ 85226 When we receive your return we will process your o
10. our vehicle so that you can still hear normal traffic sounds outside your car MOUNTING PRECAUTIONS Although Cerwin Vega Mobile amplifiers incorporate heat sinks and protection circuits mounting the amplifier in a tight space without any air movement can still damage internal circuitry over time Choose a location that provides adequate ventilation around the amplifier For easy system set up mount the amplifier so the side panel controls will be accessible after installation In addition ob serve the following precautions 1 For the most efficient cooling mount the amplifier so that air runs along the length of the fins rather than across them Remember any moving air across the amplifier will reduce heat 2 Mount the amplifier on a solid surface Avoid mounting to subwoofer enclosures or areas prone to vibration Do not install the amplifier on plastic or other combustible materials 3 Prior to mounting the amplifier make sure not to cut or drill into the fuel tank fuel lines brake lines under chassis or electrical wiring WIRING PRECAUTIONS 1 Before installation make sure the source unit power switch is in the OFF position 2 Disconnect the negative lead of the battery before making any power connections 3 When making connections be sure that each one is clean and secure Insulate all of your connec tions Failure to do so may damage your equipment 4 Asecure clean ground connection is critical to the performance
11. rder Please make sure that you clearly mark the RA number on the outside of the box and on the shipping label If the RA number is not on the outside of box label it will be returned to sender Specifications subject to change without notice lt gt Y mobile 6915 W Frye Road Chandler AZ 85226 480 838 9422 480 491 1201 fax 121807 www cerwinvegamobile com
12. stment Use this adjustment to select the crossover point Remember that you must select the Low Pass position LPF of the crossover adjustment switch first The range of adjustment is limited between 50 250 Hz Crossover Selection Switch This switch allows you to select the crossover Use High Pass for midrange or high frequency speakers Use Low Pass for subwoofers In the FLAT position neither crossover adjustment knob has an affect Input Gain Adjustment This control matches the preamp stage of the Cerwin Vega Mobile amplifier to your source unit This is NOT a volume control The range is between 150mV and 5V RCA Input and Pass Thru Output These RCA jacks allow for a normal Left and Right channel signal input Simply connect to the source unit using RCA type audio cables keeping them away from power wiring wherever possible Power Input Connections These connections are for input power chassis ground and remote turn on Use a minimum of 4 gauge wiring for power and ground connections The terminals will handle up to 4 gauge wiring with no problem whatsoever Be sure any wiring that passes through metal has a grommet Power Fuses Standard automotive type ATC ATO fuses are used on Cerwin Vega Mobile amplifiers Always replace with the correct fuse size Never insert fuses of higher values Doing so will void the warranty of your Cerwin Vega Mobile amplifier Also include a main fuse at the connection to the vehicle battery within
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