User manual AUDIOVOX JXA8BA

[. . . ] With its deep-bass reproduction and plenty of reserve power, low harmonic distortion and neutral reproduction, the Power series of amplifiers takes Mobile Hi-Fi to new heights. Like all Jensen products, when it comes to accurate sound reproduction the Power series takes a back seat to no one. Jensen will bring your Hi-Fi experience to new heights with the following features: · 525 x 1 Watts, 2-Ohm Specifications subject to change without notice. Before you begin the installation of your Power series amp remember, there are two ways to do things ­ right and twice! [. . . ] place the amplifier in the mounting location and mark the positions of the holes with a marker , pen or pencil. Carefully drill the mounting holes in the marked positions, then use the supplied mounting screws to securely fasten the amplifier to the mounting surface. WARNING: Do not cover the amplifier with carpets or enclose it behind interior trim panels, and do not mount the amplifier in an inverted or upside down configuration. Be sure the mounting location and the drilling of pilot holes will not damage any wires, control cables, fuel lines, fuel tanks, hydraulic lines or other vehicle systems or components. For installation assistance, call 1-800-323-4815 during normal business hours, or visit www. It is best to make sure you have everything you need before you start. If wiring connections are made incorrectly, the unit will not operate properly and could become permanently damaged. Follow the installation instructions carefully, or have the amplifier installed by an experienced technician. Cordless drill with assortment of bits Flat-head and Philips screwdrivers Wire cutters/strippers Crimping tool 12-volt test light or digital multimeter Wire brush, sandpaper or scraping tool (ground connection to vehicle should be a clean, unpainted metal surface) Check the battery ground (there should be two (2) ground wires coming from the battery ­ one going to the starter mounting bolt or engine block and another 3 In some cases, the installation of just one (1) amplifier could be enough to overload your factory electrical system (i. Depending on the state of your electrical system and overall condition of your vehicle, you may need to upgrade your alternator and battery. After the vehicle is started, the alternator provides the power to your electrical system, not the battery. Play a tape or CD (make sure bass and treble settings or Bass EQ are flat) and turn the volume up slowly until you just start to hear distortion. On the amplifier, slowly turn up the input level control (clockwise or to the right) until you just start to hear distortion, then back it down a bit. Adjusting the Bass Boost level allows different subwoofer/enclosure combinations to be equalized. Use this control to increase the level of low bass available from your subwoofer/enclosure combination. Ported and Band Pass enclosures should be limited to about +6dB to +9dB of boost. Sealed enclosures should be able to accept the full +12dB of boost, if necessary. The full +12dB of boost should be reserved for special applications since improper use of the Bass Boost could damage your subwoofers at high volumes. The 760 and 920 come equiped with a 2/3/4 MODE switch and can be configured for three different input modes: 2 channel, 3 channel or 4 channel. Bandpass boxes will typically use a higher crossover setting between 125Hz and 150Hz. Since musical tastes vary, you should play music that you would normally listen to in your vehicle, with the above settings as a starting point. The high pass filter will limit the low frequencies being transmitted to your speakers. [. . . ] If speakers don't play at all, one (or both) speaker wires may be disconnected. Problem Amplifier does not turn on Possible Cause No power to +12V terminal No power to REM terminal Blown main fuse at battery Blown fuse at amplifier Faulty ground Corrective Action Check fuse(s) Check head unit fuse(s) and wiring Replace fuse and identify cause of failure Replace fuse and identify cause of failure Re-ground main power ground to bare metal chassis Re-adjust the input level (refer to page 8) Re-adjust the input level (refer to page 8) Reconnect power wires properly Take unit for service Use good quality shielded RCA cables Re-ground amp to clean bare metal chassis Re-ground head unit to clean bare metal chassis Re-route RCA and/or speaker wires away from factory harnesses Re-adjust input level (refer to page 8) If the amplifier "thermals" frequently while driving subwoofers, install fan to keep amp cool. Volume control too sensitive Distorted sound Input level control adjusted too high Input level control adjusted too high Blows fuse(s) at amp Power wires connected backwards Internal problem with amp Engine noise / Ground loop(s) Alternator whine Faulty ground at amp Faulty ground at head unit Inductive coupling Blown speakers Speaker wire(s) shorting to ground Defective crossover Amp connected to improper load Amp will not drive a 1 ohm mono load, 2 ohm minimum in mono configuration Speakers defective/ blown Faulty passive crossovers Speakers out of phase Check speakers Check crossovers Check speaker polarity; reverse the connection to one speaker only if two subwoofers are connected to the amplifier. NOTE: If the protection light is activated with no speakers connected to the amplifier, and all the power connections are correct, this would indicate an internal problem with the amplifier. [. . . ]