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Summary of Contents for Directed Audio 750d 1500d
- Page 1 750d models 1500d...
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Page 2: Table Of Contents
Featuring high-efficiency MOSFET power supplies, flexible on-board crossovers, and state of the art audio design, Directed Audio power amplifiers will excite and delight the mobile sound TABLE OF CONTENTS Limited Two-Year Consumer Warranty ......3 Features . -
Page 3: Limited Two-Year Consumer Warranty
LIMITED TWO-YEAR CONSUMER WARRANTY Directed Electronics, Inc. promises to the original purchaser, to replace this product should it prove to be defective in workman- ship 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... -
Page 4: Features
FEATURES Super-efficient Class D PWM design runs much cooler than conventional amps. High-speed MOSFET switching power supply. High-current complimentary MOSFET outputs stable into one ohm loads. Thermal, DC offset, reverse polarity, and short circuit protection with status LED. Master/slave RCA jack functions support two amps bridged to one load. -
Page 5: Installation Guidelines
INSTALLATION GUIDELINES 1. Please read this owner’s manual carefully before installing this ampli- fier. 2. Disconnect the battery ground terminal prior to making any elec- trical connections. 3. Check for any hazards or obstruc- tions such as gas tanks, fuel or brake lines, and wiring harnesses before mounting the amplifier. - Page 6 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 appro- priate size (surface area is what counts);...
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Page 7: Front Panel Connections
FRONT PANEL CONNECTIONS 1. R R C C A A I I n n p p u u t t J J a a c c k k s s - - Accepts line level outputs from head units or signal processors at voltages between 150mV and 8 volts. -
Page 8: Rear Panel Connections
REAR PANEL CONNECTIONS 1. S S u u b b O O u u t t T T e e r r m m i i n n a a l l s s - Connect subwoofers to these terminals. (Refer to the Speaker Wiring Diagrams section of this guide.) 2. - Page 9 FIGURE 2—AMPLIFIER CONNECTIONS 750d REAR FIGURE 3—AMPLIFIER CONNECTIONS 1500d REAR © 2003 Directed Electronics, Inc...
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Page 10: Top Panel Controls
TOP PANEL CONTROLS 1. I I n n p p u u t t G G a a i i n n A A d d j j u u s s t t m m e e n n t t - Controls the amplifier’s sensitivity and is used to match the input level of the amplifier to the output level of the... -
Page 11: Speaker Wiring Diagrams
SPEAKER WIRING DIAGRAMS Single subwoofer connection (top view) Two subwoofer connection (top view) N N O O T T E E : : The dual + and -- subout terminals of the 750d/1500d are paralleled internally and the combined load impedance should be taken into consideration when connecting multiple subwoofers. -
Page 12: Combining Amplifiers
COMBINING AMPLIFIERS The Viper 750d/1500d subwoofer amplifiers have the capability of connecting two or more amplifiers of the same power rating together in a master/slave combination for increased power with accurate level matching. They are the Parallel Synced Gain and External Synced Bridged combinations. -
Page 13: Parallel Synced Gain Connections/Settings
PARALLEL SYNCED GAIN CONNECTIONS/SETTINGS 1. I I n n p p u u t t S S i i g g n n a a l l - Connect these RCA jacks as described in the Front Panel Connection section of this guide. 2. - Page 14 FIGURE 5—PARALLEL SYNC GAINED 750d/1500d Master Do Not Use Slave Do Not Use Subwoofer Wiring (top view) SUB LEVEL Do Not Use N N O O T T E E : : The dual + and -- subout terminals of the 750d/1500d are paralleled inter- nally and the combined load impedance should be taken into consideration when...
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Page 15: External Synced Bridged Connections/Settings
EXTERNAL SYNCED BRIDGED CONNECTIONS/SETTINGS 1. I I n n p p u u t t S S i i g g n n a a l l - Connect these RCA jacks as described in the Front Panel Connection section of this guide. - Page 16 FIGURE 6—EXTERNAL SYNC BRIDGED 750d/1500d Master Do Not Use Slave Do Not Use Subwoofer Wiring SUB LEVEL Do Not Use N N O O T T E E : : The dual + and -- subout terminals of the 750d/1500d are paralleled internally and the combined load impedance should be taken into consideration when connecting multiple subwoofers.
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Page 17: Multiple Amplifier Combinations
MULTIPLE AMPLIFIER COMBINATIONS The Directed 750d/1500d subwoofer amplifiers can also be used in multiples of the master/slave combinations allowing for unlimited expansion to a systems subwoofer section. To use multiples of amplifier combinations the following directions must be adhered to for best results. -
Page 18: Crossover Settings And Gain Adjustment
CROSSOVER SETTINGS AND GAIN ADJUSTMENT Your Directed 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. -
Page 19: Specifications
SPECIFICATIONS Directed model 750d RMS continuous power driven into 4 ohms from 20 to 250 Hz @ 14.4 VDC at rated power/load. RMS continuous power driven into 2 ohms from 20 to 250 Hz @ 14.4 VDC at rated power/load. RMS continuous power driven into 1 ohm from 20 to 250 Hz @ 14.4 VDC at rated power/load. - Page 20 Directed Electronics, Inc. Vista, California 92081 www.directed.com Directed is a proud member of Quality Directed products are sold and serviced throughout North America and around the world Call 800 274 0200 for more information about our products and services © 2003 Directed Electronics, Inc. - All rights reserved - G45013/15 11/03 The company behind this system is Directed Electronics, Inc.
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