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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 technology, Directed is ISO 9001 registered. Directed Electronics, Inc. Vista, California 92083 Directed® is committed to delivering world-class quality products and services that excit
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model
d300.1
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2 © 2002 Directed Electronics, Inc
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CONGRATULATIONS Congratulations for choosing a Viper delight the mobile sound enthusiast with Audio power amplifier from Directed years of high-quality audio reproduction. Electronics, the industry leader in high Viper Audio power amplifiers come with quality automotive security and audio a two-year limited warranty if installed equipment since 1990. by an authorized Viper dealer. If not With the introduction of Viper Audio installed by an authorized dealer, Viper power amplifiers, Directed Elec
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LIMITED TWO-YEAR CONSUMER WARRANTY Directed Electronics, Inc. promises to the WARRANTY OF NON-INFRINGEMENT OF original purchaser, to replace this product INTELLECTUAL PROPERTY ARE EXPRESSLY should it prove to be defective in workman- EXCLUDED TO THE MAXIMUM EXTENT ship or material under normal use, for a ALLOWED BY LAW, AND DIRECTED period of two years from the date of NEITHER ASSUMES NOR AUTHORIZES purchase by the dealer as indicated by the ANY PERSON TO ASSUME FOR IT ANY date code marking of t
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FEATURES Super-efficient Class D PWM design Optional remote subwoofer level runs much cooler than conventional control feature. amps. Buffered RCA output jacks for bi- High-speed MOSFET switching amped operation. power supply. Variable input sensitivity optimizes High-current N-channel MOSFET match with different signal sources. outputs stable into 2 ohm loads. Gold-plated screw-block plugs and Thermal, DC offset, reverse polarity RCA jacks ensure maximum signal and short circuit protect
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INSTALLATION GUIDELINES 1. Please read this owner’s manual battery terminal. Use a fuse or carefully before installing this ampli- circuit breaker rated slightly more fier. than the on-board fuse(s) of the amplifier(s). The gauge of power 2. Disconnect the battery ground wire used should take into account terminal prior to making any elec- the total current draw of the trical connections. system, and the length of wire used. IASCA and other auto sound 3. Check for any hazards or obstruc- compet
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lower your speaker load, the more 10. Due to the high-frequency MOSFET heat is generated. For low imped- switching power supply, filtering the ance speaker applications or power cable is not generally restricted ventilation installations, required (remember that the amp an external cooling fan may be can’t deliver full output if the power advisable. supply is restricted). Proper grounding of the signal source is 9. Battery and ground connections to mandatory for the amplifier to the vehicle shou
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FRONT PANEL CONNECTIONS/CONTROLS R RC CA A O Ou ut tp pu ut t J Ja ac ck ks s - B Ba as ss s E EQ Q S Sw wiit tc ch h 1. These pass 6. - Adds an additional through RCA jacks can be used to eight db of boost to the subwoofer send a signal to a second amplifier. output when on. 2. R RC CA A IIn np pu ut t J Ja ac ck ks s - Accepts line level 7. S St ta at tu us s L LE ED D - Will light GREEN to indi- outputs from head units or signal cate the amplifier is on and oper- processors at voltages betwee
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REAR PANEL CONNECTIONS 1. S Su ub b o ou ut t t te errm miin na alls s - Connect terminal through a FUSE or CIRCUIT BREAKER to the positive terminal of subwoofers to these terminals. (Refer to the Speaker Connection the vehicle battery or the positive terminal of an isolated audio section of this guide.) system battery. 2. R Re em mo ot te e T Tu urrn n O On n - This terminal turns on the amplifier when (+) 12 W WA AR RN NIIN NG G:: Always protect this power wire by installing a fuse or circuit
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TOP PANEL FEATURES Top Panel Cover sure to apply the tape to the side that makes contact with the cover. T To o iin ns st ta allll t th he e c co ov ve err - Place the Save the other two precut pieces of straight end of the control panel tape for future use. cover into the notched end of the amplifier’s top panel while 3. Turn the illuminated window so the elevating the curved end. Lower the Viper snake logo will be in an curved end of the cover until the upright position when the cover is magn
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SPEAKER WIRING DIAGRAMS Single subwoofer connection (bottom view) Two subwoofer connection (bottom view) N NO OT TE E:: 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. 11 © 2002 Directed Electronics, Inc
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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. 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. Try and keep the setting low enough to prevent image smearing (you should not be able to hear male voices
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SPECIFICATIONS Viper model 300.1 RMS continuous power driven into 4 ohms from 200 watts 20 to 250 Hz with less than 0.4% Total Harmonic Distortion @ 14.4 VDC RMS continuous power driven into 2 ohms 300 watts from 20 to 250Hz with less than 0.6% Total Harmonic Distortion @ 14.4 VDC Dynamic power rating (IHF-202 Standard) at 350 watts minimum load Signal-to-Noise Ratio Greater than 80 dB Frequency Response 20-250 Hz +0, -1 dB Damping Factor 50 (typical) Crossover Low-pass 12 dB/ octave variable
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