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model
550.6
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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 Variable 12 dB bass EQ function power supplies and complimentary and optional remote subwoofer bipolar outputs. level control (ch 5-6). Thermal, DC offset, reverse polarity, Two, four, and six channel input and short circuit protection. allows full access to source or processor output functions. Top-mounted controls located under illuminated Viper snake logo trim Summed stereo full-range RCA piece. outputs with variable two-way crossover. The Vipe
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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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speaker load, the more heat is 10. Due to the high-frequency MOSFET generated. For low impedance switching power supply, filtering the speaker applications or restricted power cable is not generally ventilation installations, an external required (remember that the amp cooling fan may be advisable. can’t deliver full output if the power supply is restricted). Proper 9. Battery and ground connections to grounding of the signal source is the vehicle should be made with mandatory for the amplifier
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FRONT PANEL CONNECTIONS/STATUS LED 1. R RC CA A IIn np pu ut t J Ja ac ck ks s - Accepts line level amplifier shuts down due to short outputs from head units or signal circuit, DC offset, or overheating processors at voltages between detected by the on-board protection 150mV and 8 volts. circuitry. 2. R RC CA A O Ou ut tp pu ut t J Ja ac ck ks s - These pass 4. R Re em mo ot te e S Su ub b L Le ev ve ell C Co on nt trro oll - Controls through RCA jacks can be used to the gain of channels five an
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REAR PANEL CONNECTIONS R Re em mo ot te e T Tu urrn n O On n 1. - This terminal terminal through a FUSE or CIRCUIT turns on the amplifier when (+) 12 BREAKER to the positive terminal of volt is applied to it. Connect it to the vehicle battery or the positive the remote turn on lead of the head terminal of an isolated audio unit or signal source. If a (+) 12 system battery. volt remote turn on lead is not W WA AR RN NIIN NG G:: Always protect this power wire by installing a fuse available, the R
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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 4. 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 - amplifier sensitivity and is used to Adjusts the crossover point for the match the input level of the amplifier on-board active crossovers. to the output level of the signal 5. V Va arriia ab blle e B Ba as ss s E EQ Q - Adds 0 to12db of source. additional boost to channels five 2. C Crro os ss so ov ve err S Se elle ec
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TOP PANEL FEATURES Control Panel Cover 2. Apply two of the precut pieces of adhesive tape to the corners of the The amplifier’s gain and filter controls window that don't have tape. Make are mounted under the elliptical control sure to apply the tape to the side panel cover. Magnets hold the cover that makes contact with the cover. snugly and allow easy access. Save the other two precut pieces of T To o iin ns st ta allll t th he e c co ov ve err - Place the tape for future use. straight end of
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SPEAKER WIRING DIAGRAMS Stereo operation (bottom view) Four Channel Stereo with Mono Sub Six Channel Stereo Bridged operation (bottom view) Three Channel N NO OT TE E:: When wiring the 550.6 for three channel operation, connect the left audio signal to both channels one and two RCA jacks and the right audio signal to both chan- nels three and four RCA jacks using RCA Y adapters. 12 © 2002 Directed Electronics, Inc
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Tri amp operation (bottom view) Stereo/mono operation (bottom view) 13 © 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 550.6 Ch 1-4 Ch 5-6 RMS continuous power per channel, Channels 1-4 driven 50 75 watts watts into 4 ohms from 20 to 20,000 Hz, with less than 0.08% total Harmonic Distortion @ 14.4 VDC. Channel 5-6 driven into 4 ohms from 20-250 Hz, with less than 0.08% THD @ 14.4 VDC. RMS continuous power per channel, Channels 1-4 driven 75 125 watts watts into 2 ohms from 20 to 20,000 Hz, with less than 0.1% Total Harmonic Distortion @ 14.4 VDC. Channel 5-6 driven into 2 ohms from 20
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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 Directed Electronics, Inc. technology, Directed is ISO 9001 registered. Vista, California 92083 Directed® is committed to delivering world-class quality products and services that excit
