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model
400.2
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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 Dual high-speed MOSFET switching Continuously variable 12 dB/ power supplies and complimentary octave two-way active crossover. bipolar outputs. Variable 12 dB bass EQ function. Stereo, mono, or simultaneous Buffered stereo full-range RCA stereo/mono operation. output jacks. Thermal, DC offset, reverse polarity Gold-plated screw-block plugs and and short circuit protection. RCA jacks ensure maximum signal Top-mounted controls located under transfer. illuminated Viper snake logo
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INSTALLATION GUIDELINES 1. Please read this owner’s manual terminal. Use a fuse or circuit carefully before installing this ampli- breaker rated slightly more than the fier. 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- competition or
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generated. For low impedance 10. Due to the high-frequency MOSFET speaker applications or restricted switching power supply, filtering the ventilation installations, an external power cable is not generally cooling fan may be advisable. required (remember that the amp can’t deliver full output if the power 9. Battery and ground connections to supply is restricted). Proper the vehicle should be made with grounding of the signal source is crimped ring terminals of the appro- mandatory for the ampl
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FRONT PANEL CONNECTIONS/STATUS LED 1. R RC CA A O Ou ut tp pu ut t J Ja ac ck ks s - These pass 3. S St ta at tu us s L LE ED D - Will light green to indi- through RCA jacks can be used to cate the amplifier is on and oper- send a signal to a second amplifier. ating normally and will be off if the amplifier shuts down due to short R RC CA A IIn np pu ut t J Ja ac ck ks s 2. - Accepts line level circuit, DC offset, or overheating outputs from head units or signal detected by on-board protection p
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4. ( (+ +) ) 1 12 2 V Vo ollt t P Po ow we err - Connect this wire necessary to make this terminal through a FUSE or CIRCUIT connection. Always use wire of the BREAKER to the positive terminal of same gauge or larger than the (+) the vehicle battery or the positive 12 volt power wire. The chassis terminal of an isolated audio connection point should be scraped system battery. free of paint and dirt. Use only quality crimped and/or soldered W WA AR RN NIIN NG G:: Always protect this power wire by
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TOP PANEL CONTROLS 1. IIn np pu ut t G Ga aiin n A Ad djju us st tm me en nt t - Controls is used for mid range speakers and amplifier sensitivity and is used to tweeters. LPF attenuates high match the input level of the ampli- frequencies and is used for fier to the output level of the signal subwoofers speakers. source. C Crro os ss so ov ve err F Frre eq qu ue en nc cy y A Ad djju us st tm me en nt t 3. - 2. C Crro os ss so ov ve err S Se elle ec ct tiio on n S Sw wiit tc ch h - Adjusts the c
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TOP PANEL FEATURES Control Panel Cover cracking the window. The amplifier’s gain and filter controls 2. Apply two of the precut pieces of are mounted under the elliptical control adhesive tape to the corners of the panel cover. Magnets hold the cover window that don't have tape. Make snugly and allow easy access. 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
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SPEAKER WIRING DIAGRAMS Stereo operation (bottom view) Mono operation (bottom view) Simultaneous stereo/mono operation (bottom view) 12 © 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. For full-range and simultaneous stereo/mono bass applications, the crossover selection switch should be set to FLAT. If the amplifier is driving your subwoofers, set the switch to LPF, and for mid-bass/midrange output, set to HPF. The crossover frequency control needs to be adjusted to suit you
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SPECIFICATIONS Viper model 400.2 RMS continuous power per channel, both chan- 125 watts nels driven into 4 ohms from 20 to 20,000 Hz, with less than 0.08% Total Harmonic Distortion @ 14.4 VDC RMS continuous power per channel, both chan- 200 watts nels driven into 2 ohms from 20 to 20,000 Hz, with less than 0.1% Total Harmonic Distortion @ 14.4 VDC RMS continuous power bridged into a 4 ohm 400 watts load from 20 to 20,000 Hz, with less than 0.1% Total Harmonic Distortion @ 14.4 VDC Dynamic power
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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
