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© 1999 Directed Electronics, Inc 

1.

GROUND TERMINAL

- connect this

terminal to the car chassis with a
short heavy gauge wire, DO NOT
CONNECT TO THE NEGATIVE
TERMINAL OF THE CAR BATTERY or
to factory chassis ground points
already occupied by factory wires! If
you are grounding multiple ampli-
fiers, you may use a high-current
distribution block with proper gauge
cables, or use individual grounds for
each amp attached to the vehicle at
separate but close ground points.

2.

REMOTE  TERMINAL

- connect this

terminal to the amplifier remote
output from your head unit or signal
source, if it provides one. You may
also use the power antenna output
wire from decks that do not have
separate amp remote outputs.  This
input requires a sw12V
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
breaker located close to the battery.  

4.

POWER FUSE

- protects the ampli-

fier against electrical damage. DO
NOT REPLACE THE FUSE OR FUSES
WITH LARGER AMPERAGE FUSES !
If the fuse(s) blows, check your
system for wiring problems or see
your dealer.

5.

SPEAKER OUTPUT  TERMINALS

connect the speakers to these termi-
nals.  Refer to the speaker wiring
diagrams (pg.6) for different wiring
options.

AMPLIFIER CONNECTIONS

Refer to Figure 1 for details.

FIGURE 1—AMPLIFIER CONNECTIONS

Summary of Contents for 150

Page 1: ...OWNER S MANUAL Models 150 250 400 ...

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: ...is for high pass mid bass midrange outputs FLAT is used for full range or mixed stereo mono applications 4 LED INDICATOR the green Power LED lights to indicate normal opera tion The green LED will shut off to indicate amp shutdown due to short circuit DC offset or over current conditions detected by on board protection circuits Thermal protection is also indicated by the green LED shutting off 5 C...

Page 8: ...6 1999 Directed Electronics Inc SPEAKER WIRING DIAGRAMS Stereo operation Mono operation Simultaneous stereo mono operation ...

Page 9: ...roper signal match for clean quiet amplifier operation For full range and simultaneous stereo mono bass applications start by playing some music you are familiar with With the gain adjustment 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...

Page 10: ... power rating IHF 202 Standard bridged into 4 ohms 50 75 125 watts watts watts 75 125 200 watts watts watts 150 250 400 watts watts watts 200 325 550 watts watts watts model 150 250 400 Signal to Noise Ratio Greater than 95 dB Frequency Response 20 20 000 Hz 0 5 dB Damping Factor 4 ohm Greater than 200 Crossover Switchable high or low pass 12 dB octave continuously variable from 50 to 500 Hz Bass ...

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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