User manual AUDIOVOX POWER AMPLIFIERS 920

[. . . ] Exposure to loud sounds or music can permanently damage your hearing. Unfortunately, in many cases, the damage is not noticeable until years later. In addition, loud music may hinder your ability to hear traffic, police, and fire or emergency vehicles. Please be responsible and have respect for other people by listening at moderate volumes! [. . . ] A fuse or circuit breaker must be installed to prevent a possible electrical fire should the main power wire short to ground. Connect the power antenna or amplifier turn-on lead from the receiver to the amplifier remote terminal. Make the ground lead as short as possible, leaving enough length to complete the installation and to allow for any service that may be needed at a later date. To ensure a good ground, scrape away any paint or undercoating to expose bare metal. Use a "ring" terminal of the proper gauge and an "outside star washer" (between the chassis and ring terminal) when making your ground connection. Although you've scraped away the paint to expose bare metal, the outside star washer will help to "bite into" the chassis for a tight, secure ground. NOTE: Power amplifiers can drive speakers with a nominal impedance range of 2~ 4-ohms. For maximum power, configure your speakers for a nominal 2-ohm load. NOTE: Do not overlook the use of the proper gauge speaker wire. Most trunk/hatchback installations will require a 15-20 foot RCA cable, while pickup trucks and under-seat mounting will require a 6-12 foot RCA cable. Connect an RCA cable from your receiver to the RCA input on your amplifier. The Power 760 and 920 can be configured for three different input modes: 2 channel, 3 channel or 4 channel. NOTE: The use of good quality RCA cables is just as important as power and speaker wire. Choose a high quality low capacitance cable for the best results. Pass-Thru RCA connectors are provided to connect additional amplifiers without the need to purchase "Y" adapters. The power indicator provides a visual indication that the amplifier is turned on. Select LPF (low pass filter) when the amplifier will be driving woofers or subwoofers. Choose FULL when crossover mode is not active and the amplifier is in "full range" mode. Select HPF (high pass filter) when the amplifier will be driving full-range or separate speakers, and you want to limit the "bass" being transferred to these speakers. After the installation is complete, make sure the input level control on the amplifier is turned down all the way (counter-clockwise or all the way to the left). 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. [. . . ] This Warranty does not cover the following: · Damage incurred during shipping or transporting the product to the Company or a service center · Damage caused by improper installation, mishandling, misuse, neglect, accident, blown fuse, battery leakage, theft or improper storage; burned voice coils caused by over-driving the speaker; or mechanical failures due to punctures or tears · products whose factory serial number/bar code label(s) or markings have been removed or defaced · Damage resulting from moisture, humidity, excessive temperature, extreme environmental conditions or external natural causes Please review the "Care and Maintenance" section of your Installation and Operation Manual for additional information regarding the proper use of your product. This Warranty is in lieu of all other express warranties or liabilities. No person or representative is authorized to assume for the Company any liability other than expressed herein in connection with the sale of this product. Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damage so the above limitations or exclusions may not apply to you. [. . . ]