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© 2003 Directed Electronics, Inc 

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.

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

enthusiast with years of high-quality
audio reproduction.

Directed Audio power amplifiers come
with a two-year limited warranty if
installed by an authorized Directed
dealer. If not installed by an authorized
dealer, Directed Audio power amplifiers
are covered by a one-year, parts-and-
labor limited warranty.

Be sure to retain your original sales
receipt and refer to the warranty section
of this guide for full details about your
coverage.

Limited Two-Year Consumer Warranty  . . . . . . . . . . . . . . . . . . . . . . . . .4

Features  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Installation Guidelines  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Front Panel Connections/Status LED . . . . . . . . . . . . . . . . . . . . . . . . . .8

Rear Panel Connections  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Top Panel Controls  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Top Panel Features  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Speaker Wiring Diagrams  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Crossover Settings and Gain Adjustment  . . . . . . . . . . . . . . . . . . . . . . .13

Specifications  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Summary of Contents for 450d5

Page 1: ...model 450d5 ...

Page 2: ...2 2003 Directed Electronics Inc ...

Page 3: ...and delight the mobile sound enthusiast with years of high quality audio reproduction Directed Audio power amplifiers come with a two year limited warranty if installed by an authorized Directed dealer If not installed by an authorized dealer Directed Audio power amplifiers are covered by a one year parts and labor limited warranty Be sure to retain your original sales receipt and refer to the war...

Page 4: ...ct 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 PARTICULAR PURPOSE AND WARRANTY OF NON INFRINGEMENT OF INTELLECTUAL PROPERTY ARE EXPRESSLY EXCLUDED TO THE MAXIMUM EXTENT ALLOWED BY LAW AND DIRECTED NEITHER ASSUMES NOR AUTHORIZES ANY PERSO...

Page 5: ...OSFET outputs sub channel Five channel expandable architec ture supports single or multiple amp system designs Thermal DC offset reverse polarity and short circuit protection with status LED Top mounted controls are easily accessed for system tuning Dual continuously variable 12 dB octave active crossovers Remote subwoofer level control and switchable 8 dB bass EQ function Two four and six channel...

Page 6: ...tion within eight to ten inches of the battery terminal Use a fuse or circuit breaker rated slightly more 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 auto sound competition organizations have charts available for this you can also find a chart in the MECP study gui...

Page 7: ...area is what counts soldering the terminals after crimping is also recom mended 10 Due to the high frequency MOSFET switching power supply 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 mandatory for the amplifier to reach its performance peak If the RCA inputs are not gr...

Page 8: ...ndi cate the amplifier is on and oper ating normally Shuts off to indicate thermal shutdown or short circuit condition for channels 1 4 5 P Pr ro ot te ec ct tiio on n L LE ED D Lights RED to indi cate the amplifier is in protection mode due to short circuit or DC offset 6 R Re em mo ot te e S Su ub b L Le ev ve ell C Co on nt tr ro oll Controls the subwoofer amplifier gain controls from a remote ...

Page 9: ...G Always protect this power wire by installing a fuse or circuit breaker of the appropriate size within 12 inches of the battery terminal connection 5 R Re em mo ot te e T Tu ur rn n O On n This terminal turns on the amplifier when 12 volt is applied to it Connect it to the remote turn on lead of the head unit or signal source If a 12 volt remote turn on lead is not available Remote Power Adapter ...

Page 10: ... active crossovers 4 S Su ub b P Ph ha as se e S Sw wiit tc ch h Changes the phase of the subwoofer speaker output by 180 degrees 5 B Ba as ss s E EQ Q S Sw wiit tc ch h Adds 8db of addi tional boost to the subwoofer output when active 6 S Su ub b IIn np pu ut t S Sw wiit tc ch h Controls where the subwoofer section of the ampli fier gets its signal If the SUB INPUT switch is in the ON position th...

Page 11: ...ed under a control panel cover on top of the amplifier The control panel cover must be removed to gain access to the gain and filter controls Remove Install Four Allen head screws hold the control panel cover to the amplifier top panel one at each corner They can be removed with the wrench supplied in the hardware pack TOP PANEL FEATURES ...

Page 12: ...12 2003 Directed Electronics Inc SPEAKER WIRING DIAGRAMS Five channel operation top view Three channel operation top view ...

Page 13: ...me 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 again When you can listen to the music at or slightly above 3 4 on your head unit without audible distortion slowly raise the gain of the amp...

Page 14: ...tortion 14 4 VDC D Dy yn na am miic c p po ow we er r r ra at tiin ng g IHF 202 standard at minimum load Directed model 450d5 Ch 1 4 Sub Ch 35 150 watts watts 50 250 watts watts 100x2 250 watts watts Signal to Noise Ratio Greater than 95 dB Ch 1 4 80dB sub Frequency Response 20 20 000 Hz 0 5 dB Ch 1 4 Damping Factor 4 ohm Greater than 100 Ch 1 4 50 sub Crossover Ch 1 4 Switchable high or low pass ...

Page 15: ...15 2003 Directed Electronics Inc ...

Page 16: ... field of advanced electronic technology Directed is ISO 9001 registered Directed is committed to delivering world class quality products and services that excite and delight our customers Directed Electronics Inc Vista California 92083 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 ...

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