model d300.
© 2002 Directed Electronics, Inc
CONGRATULATIONS Congratulations for choosing a Viper Audio power amplifier from Directed Electronics, the industry leader in high quality automotive security and audio equipment since 1990. With the introduction of Viper Audio power amplifiers, Directed Electronics continues to set new standards of performance, reliability, and affordability in the mobile electronics industry.
LIMITED TWO-YEAR CONSUMER WARRANTY Directed Electronics, Inc. promises to the original purchaser, to replace this product should it prove to be defective in workmanship or material under normal use, for a period of two years from the date of purchase by the dealer as indicated by the date code marking of the product PROVIDED the product was installed by an authorized Directed dealer.
FEATURES Super-efficient Class D PWM design runs much cooler than conventional amps. High-speed MOSFET switching power supply. High-current N-channel MOSFET outputs stable into 2 ohm loads. Optional remote subwoofer level control feature. Buffered RCA output jacks for biamped operation. Variable input sensitivity optimizes match with different signal sources. Gold-plated screw-block plugs and RCA jacks ensure maximum signal transfer.
INSTALLATION GUIDELINES 1. Please read this owner’s manual carefully before installing this amplifier. 2. Disconnect the battery ground terminal prior to making any electrical connections. 3. Check for any hazards or obstructions such as gas tanks, fuel or brake lines, and wiring harnesses before mounting the amplifier. 4. Pick a mounting location that will provide adequate access and ventilation and protect the amplifier from heat, moisture, and dirt. 5.
lower your speaker load, the more heat is generated. For low impedance speaker applications or restricted ventilation installations, an external cooling fan may be advisable. 9. Battery and ground connections to the vehicle should be made with crimped ring terminals of the appropriate size (surface area is what counts); soldering the terminals after crimping is also recommended. 10.
FRONT PANEL CONNECTIONS/CONTROLS 1. RCA Output Jacks - These pass through RCA jacks can be used to send a signal to a second amplifier. 6. Bass EQ Switch - Adds an additional eight db of boost to the subwoofer output when on. 2. RCA Input Jacks - Accepts line level outputs from head units or signal processors at voltages between 150mV and 8 volts. 7.
REAR PANEL CONNECTIONS 1. Sub out terminals - Connect subwoofers to these terminals. (Refer to the Speaker Connection section of this guide.) 2. Remote Turn On - This terminal turns on the amplifier when (+) 12 volt is applied to it. Connect it to the remote turn on lead of the head unit or signal source. If a (+) 12 volt remote turn lead is not available, a Remote Power Adapter (P/N #55000) can be used to supply a remote turn on signal. DO NOT connect this terminal to constant (+) 12 volt. 3.
TOP PANEL FEATURES Top Panel Cover To install the cover - Place the straight end of the control panel cover into the notched end of the amplifier’s top panel while elevating the curved end. Lower the curved end of the cover until the magnets make contact. To remove the cover - Place a finger on the curved end of the cover while lifting up the straight end with your thumb. When the magnets loose contact, lift and remove the cover.
SPEAKER WIRING DIAGRAMS Single subwoofer connection (bottom view) Two subwoofer connection (bottom view) NOTE: The dual + and -- subout terminals of the d300.1 are paralleled internally and the combined load impedance should be taken into consideration when connecting multiple subwoofers.
CROSSOVER SETTINGS AND GAIN ADJUSTMENT Your Viper Audio power amplifier needs to be adjusted carefully to achieve maximum performance. These are some guidelines to follow when fine-tuning the amplifier. 12 Because this amplifier is only designed for subwoofer applications, the low-pass crossover is active at all times. The crossover point is adjustable to allow more precise system operation.
SPECIFICATIONS Viper model 300.1 RMS continuous power driven into 4 ohms from 20 to 250 Hz with less than 0.4% Total Harmonic Distortion @ 14.4 VDC 200 watts RMS continuous power driven into 2 ohms from 20 to 250Hz with less than 0.6% Total Harmonic Distortion @ 14.
The company behind this system is Directed Electronics, Inc. Since its inception, Directed has had one purpose, to provide customers with the finest vehicle security, car stereo products, rear seat entertainment, and accessories available. The recipient of more than 20 patents in the field of advanced electronic Directed Electronics, Inc. Vista, California 92083 www.directed.com technology, Directed is ISO 9001 registered.
