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Related Manuals for Directed Audio 250d
Summary of Contents for Directed Audio 250d
- Page 1 250d...
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Page 2: Table Of Contents
CONGRATULATIONS Congratulations for choosing a Directed Audio power amplifier from Directed Electronics, the industry leader in high quality automotive security and audio equipment since 1990. Directed Audio power amplifiers continue to set new standards of perfor- mance, reliability, and affordability in the mobile electronics industry. -
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 amp designs. High-speed MOSFET switching power supply. High-current N-channel MOSFET outputs stable into 2 ohm loads. Thermal, DC offset, reverse polarity and short circuit protection. Continuously variable 12 dB/ octave low-pass crossover. -
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/Controls
Adjusts the crossover point for the on-board active crossover. FIGURE 1—AMPLIFIER CONNECTIONS 250d FRONT © 2002 Directed Electronics, Inc 6. B B a a s s s s E E Q Q S S w w i i t t c c h h - Adds an additional 8 db of boost to the subwoofer output when on. -
Page 8: Rear Panel Connections
4. R R e e m m o o t t e e T T u u r r n n O O n n - This terminal turns on the amplifier when (+) 12 volt is applied to it. Connect it to FIGURE 2—AMPLIFIER CONNECTIONS 250d REAR the remote turn on lead of the head unit or signal source. If a (+) 12... -
Page 9: Speaker Wiring Diagrams
Two subwoofer connection (top view) N N O O T T E E : : The dual + and -- subout terminals of the 250d are paralleled internally and the combined load impedance should be taken into consideration when connecting multiple subwoofers. -
Page 10: 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 11: Specifications
SPECIFICATIONS Directed model 250d RMS continuous power driven into 4 ohms from 20 to 250 Hz with less than 0.4% Total Harmonic Distortion @ 14.4 VDC RMS continuous power driven into 2 ohms from 20 to 250Hz with less than 0.6% Total Harmonic Distortion @ 14.4 VDC... - Page 12 Directed Electronics, Inc. Vista, California 92083 www.directed.com 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 © 2002 Directed Electronics, Inc. - All rights reserved - G45012 02/02 The company behind this system is Directed Electronics, Inc.
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