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OWNER’S MANUAL

Model 250d

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Summary of Contents for 250d

Page 1: ...OWNER S MANUAL Model 250d ...

Page 2: ...d for anyone s budget Featuring high effi ciency MOSFET power supplies flexible on board crossovers and state of the art audio design Directed Audio amplifiers will satisfy every music lover s needs for years to come Your Directed Audio power amplifier comes with a two year limited warranty if it is installed by an authorized DEI dealer Amplifiers not installed by an authorized Directed dealer are...

Page 3: ...also impair a driver s ability to hear traffic sounds or emergency vehi cles Use common sense and practice safe listening habits when listening to or adjusting your audio system WARNING Installation Guidelines Page 2 Amplifier Connections Page 4 Amplifier Controls Page 5 Speaker Wiring Diagrams Page 6 Crossover Setting and Gain Adjustment Page 7 Specifications Page 8 Warranty Page 9 ...

Page 4: ...on at the battery within 8 10 inches of the battery terminal Use a fuse or circuit breaker rated at about 5 10 more amps than the on board fuse s of the amplifier s The gauge of power wire used should take into account the total current draw of the system and the length of wire used IASCA and other autosound competition organiza tions have charts available for this you can also find a chart in the...

Page 5: ...ring terminals of the appropriate size surface area is what counts soldering the terminals after crimping is also recommended 10 Due to the high frequency MOSFET switching power supply used in all Directed Audio amplifiers filtering the power cable is not generally required remember that the amp can t deliver full output if the power supply is restricted Proper grounding of the signal source is ma...

Page 6: ...ot have separate amp remote outputs This input requires a switched 12V signal to activate the amplifier Do not connect this terminal to a constant source of 12V 3 12V POWER TERMINAL connect this terminal to the positive terminal of the car or separate audio system battery Refer to the installation guidelines and specs page for proper gauge of wire YOU MUST PROTECT THIS WIRE WITH A FUSE or circuit ...

Page 7: ...f the amplifier The signal is inverted with the switch set to 180 5 CROSSOVER FREQUENCY controls the frequency range of the ampli fier 6 BASS EQ This switch activates an 8 dB bass boost circuit Use as necessary for low frequency enhancement 7 LED INDICATOR the green Power LED lights to indicate normal opera tion The green LED will shut off to indicate amp shutdown due to thermal short circuit DC o...

Page 8: ...ker nominal impedance must be at least 2 ohm Amplifier parallels the speaker terminals internally Single subwoofer connection Two subwoofer connection Parallel speaker nominal impedance must be at least 2 ohm Amplifier parallels the speaker terminals internally ...

Page 9: ... Start by playing some music you are familiar with With the gain adjust ment on the amplifier in the middle of its rotation bring up the volume on your head unit to the 3 4 volume setting or until you start to hear distortion or clipping If you hear distortion before you reach the 3 4 volume setting of your head unit reduce the gain setting on the amplifier and start to raise the head unit volume ...

Page 10: ...r rating IHF 202 Standard at minimum load 125 watts 300 watts 250 watts model 250d 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 from 30 to 250 Hz Bass Equalization 8 dB centered at 40Hz Input Impedance 20K ohms Input Sensitivity Variable from 150 mV to 8 volt Output Impedance 2 to 4 ohms Supply Volta...

Page 11: ... neglect improper service or other causes not arising out of defects in materials or construction ALL WARRANTIES INCLUDING BUT NOT LIMITED TO EXPRESS WARRANTY IMPLIED WARRANTY WARRANTY OF MERCHANTABILITY FITNESS FOR PARTIC ULAR PURPOSE AND WARRANTY OF NON INFRINGEMENT OF INTELLECTUAL PROPERTY ARE EXPRESSLY EXCLUDED TO THE MAXIMUM EXTENT ALLOWED BY LAW AND DEI NEITHER ASSUMES NOR AUTHORIZES ANY PER...

Page 12: ...L AMPLIFIERS SIGNAL PROCESSORS SINGLE AND DUAL VOICE COIL DIE CAST SUBWOOFERS HIGH PERFORMANCE POWER CABLES PREMIUM SPEAKER AUDIO CABLES AND ADAPTERS POWER CAPACITORS GOLD PLATED POWER DISTRIBUTION AND FUSING BLOCKS GOLD PLATED POWER AND SPEAKER TERMINALS TUBE SUBWOOFERS POWERED SUBWOOFERS SINGLE AND DUAL VOICE COIL SUBWOOFERS COAXIAL SPEAKERS SINGLE AND DUAL VOICE COIL DIE CAST SUBWOOFERS COMPONE...

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