Directed Audio Car Amplifier model 1200 5 User Manual

model  
1200/5  
 
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.  
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.  
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  
Be sure to retain your original sales  
receipt and refer to the warranty section  
of this guide for full details about your  
coverage.  
TABLE OF CONTENTS  
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  
Combined Amplifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13  
Parallel Synced Gain Connections/Settings . . . . . . . . . . . . . . . . . . . . .14  
External Synced Bridged Connections/Settings . . . . . . . . . . . . . . . . . . .16  
Crossover Settings and Gain Adjustment . . . . . . . . . . . . . . . . . . . . . . .18  
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19  
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© 2003 Directed Electronics, Inc  
 
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  
authorized Directed dealer. During this two -  
year period, there will be no charge for this  
replacement PROVIDED the unit is returned  
to Directed, shipping pre-paid. If the unit is  
installed by anyone other than an autho-  
rized Directed dealer, the warranty period  
will be one year from the date of purchase  
by the dealer as indicated by the date code  
marking of the product. During this one-year  
period there will be no charge for this  
replacement PROVIDED the unit is returned  
to Directed, shipping pre-paid. This warranty  
is non-transferable and does not apply to  
any unit that has been modified or used in a  
manner contrary to its intended purpose,  
and does not cover damage to the unit  
caused by installation or removal of the unit.  
This warranty is void if the product has been  
damaged by accident or unreasonable use,  
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 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 PERSON TO ASSUME FOR IT ANY  
LIABILITY IN CONNECTION WITH THE  
SALE OF THE PRODUCT. DIRECTED HAS  
ABSOLUTELY NO LIABILITY FOR ANY AND  
ALL ACTS OF THIRD PARTIES INCLUDING  
ITS AUTHORIZED DEALERS OR  
INSTALLERS. Unit must be returned to  
Directed, postage pre-paid, with: consumer’s  
name, telephone number, and address,  
authorized dealer’s name and address, and  
product description. IN ORDER FOR THIS  
WARRANTY TO BE VALID, YOUR UNIT  
MUST BE SHIPPED WITH PROOF OF  
INSTALLATION BY AN AUTHORIZED  
DIRECTED DEALER. ALL UNITS RECEIVED  
BY DIRECTED FOR WARRANTY REPAIR  
WITHOUT PROOF OF DIRECTED DEALER  
INSTALLATION WILL BE COVERED BY THE  
LIMITED ONE-YEAR PARTS AND LABOR  
WARRANTY. Note: This warranty does not  
cover labor costs for the removal and rein-  
stallation of the unit. BY PURCHASING  
THIS PRODUCT, THE CONSUMER AGREES  
AND CONSENTS THAT ALL DISPUTES  
BETWEEN THE CONSUMER AND Directed  
SHALL BE RESOLVED IN ACCORDANCE  
WITH CALIFORNIA LAWS IN SAN DIEGO  
COUNTY, CALIFORNIA.  
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© 2003 Directed Electronics, Inc  
 
FEATURES  
Dual high-speed MOSFET switching  
Remote subwoofer level control and  
power supplies.  
switchable 8 dB bass EQ function.  
Complimentary bipolar outputs (ch  
1-4), and high-current MOSFET  
outputs (sub channel).  
Two, four, and six channel input  
allows full access to source or  
processor output functions.  
Five channel expandable architec-  
ture supports single or multiple amp  
system designs.  
Master/slave function allows  
synced bridged or parallel operation  
with model 750d.  
Thermal, DC offset, reverse polarity,  
and short circuit protection with  
status LED.  
Summed stereo full-range RCA  
output jacks.  
Gold-plated wire terminals and RCA  
connectors ensure maximum signal  
transfer.  
Top-mounted controls are easily  
accessed for system tuning.  
Dual continuously variable 12  
dB/octave two-way active  
crossovers (ch 1-4).  
Rugged one-piece extruded heat  
sink finished with injection-molded  
mounting feet.  
Continuously variable 24 dB/  
octave low-pass crossover (sub  
channel).  
Switchable 30Hz, 24 dB/octave  
subsonic filter and phase invert  
switch (sub channel).  
WARNING  
High-powered car audio  
systems may produce sound  
pressure levels that exceed the  
threshold at which hearing loss may  
result.  
They may 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.  
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© 2003 Directed Electronics, Inc  
 
INSTALLATION GUIDELINES  
1. Please read this owner’s manual  
carefully before installing this ampli-  
fier.  
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  
guide. Minimum wire gauge recom-  
mendations for the individual ampli-  
fiers are listed on the specification  
page. Always use the same gauge  
wire for the amplifier ground that  
you use for the power wire. Be sure  
to examine the battery ground  
cable of the vehicle, and if neces-  
sary, upgrade it by adding an addi-  
tional ground wire that is the same  
gauge as the amplifier’s power  
wire. Remember, the amplifier can  
only deliver its rated output when it  
is not current limited by the power  
and ground supply wires.  
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.  
4. Pick a mounting location that will  
provide adequate access and venti-  
lation and protect the amplifier  
from heat, moisture, and dirt.  
5. Avoid sharp metal areas when  
routing cables to the amplifier, and  
run RCA cables away from the  
power cables and other potentially  
noisy car harnesses.  
6. The amplifier should be grounded  
with a short, heavy gauge wire  
connected directly to the car at a  
bare metal surface, preferably  
scraped body sheet metal. Do not  
use factory ground locations, seat  
bolts, or brackets that are spot  
welded.  
8. This amplifier is designed to drive a  
speaker load that measures from 2-  
8 ohms (sub ch 1-4 ohms). Keep in  
mind that heat is the long-term  
enemy of automotive electronics  
7. Always fuse your power connection  
within eight to ten inches of the  
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© 2003 Directed Electronics, Inc  
 
and the lower your speaker load,  
the more heat is generated. For low  
impedance speaker applications or  
restricted ventilation installations,  
an external cooling fan may be  
advisable.  
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 grounded  
adequately via the signal source,  
electrical noise from the vehicle  
may be picked up in the system.  
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); soldering the terminals  
after crimping is also recom-  
mended.  
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© 2003 Directed Electronics, Inc  
 
FRONT PANEL CONNECTIONS/STATUS LED  
RCA Input Jacks -  
RCA Bridge Output Jack  
- This output  
1.  
Accepts line level  
5.  
outputs from head units or signal  
processors between 150mV and 8  
volts.  
sends an out-of-phase signal to a  
750d slave amplifier when  
connected in the External Synced  
Bridged combination. (Refer to the  
Combined Amplifiers section of this  
guide.)  
RCA Sub Input Jacks  
2.  
- Accepts line  
level outputs from head units or  
signal processors between 150mV  
and 8 volts for the subwoofer  
section of the amplifier.  
Status LEDs  
6.  
- The Power LED will  
light GREEN to indicate the amplifier  
is on and operating normally. The  
GREEN LED will turn off and the  
Protection LED will light RED when  
the amplifier has shut itself down  
due to speaker short circuit, DC  
offset or overheating.  
RCA Output Jacks -  
3.  
4.  
These pass  
through RCA jacks can be used to  
send a signal to a second amplifier. It  
is the summed stereo output of the  
one through four channel inputs of  
the amplifier.  
Remote Sub Level Control  
7.  
- Controls  
RCA Sync Out Jack  
- This RCA jack  
the subwoofer amplifier gain  
controls from a remote location for  
ease of adjustment during listening.  
sends a synced, or in-phase, gain  
matched signal to a 750d slave  
amplifier when connected in the  
Parallel Synced Gain combination.  
(Refer to the Combined Amplifiers  
section of this guide.)  
Warning: DO NOT connect a level control knob from other  
manufacturers to the Remote Sub Level Control of  
any Directed amplifier. Even though the connectors  
fit properly, the control knob and connector pin  
positions may be different and the amplifier will be  
damaged.  
FIGURE 1—AMPLIFIER CONNECTIONS 1200/5 FRONT  
4
5
1
2
3
6
7
1+2  
3+4  
SUB  
1-4 OUT  
SUB OUT  
S
SYNC OUT  
R
L
POWER  
REMOTE  
BRIDGE OUT  
PROTECTION  
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© 2003 Directed Electronics, Inc  
 
REAR PANEL CONNECTIONS  
Sub Out Terminals  
1.  
2.  
3.  
- Connect  
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  
(P/N #55000) can be used to  
supply a remote turn on signal. DO  
NOT connect this terminal to  
constant (+) 12 volt.  
subwoofers to these terminals.  
(Refer to the Speaker Wiring  
Diagrams section of this guide.)  
Speaker Out Terminals  
- Connect  
the speakers to these terminals.  
(Refer to the Speaker Wiring  
Diagrams section of this guide.)  
Power Fuses -  
These fuses protect  
the amplifier against internal elec-  
trical damage and are meant to  
protect the amplifier only. All other  
power connections should be fused  
at the source.  
Ground -  
6.  
Connect this terminal  
directly to the sheet metal chassis  
of the vehicle, using the shortest  
wire necessary to make this  
connection. Always use wire of the  
same gauge or larger than the (+)  
12 volt power wire. The chassis  
connection point should be scraped  
free of paint and dirt. Use only  
quality crimped and/or soldered  
connectors at both ends of this  
wire. DO NOT connect this terminal  
directly to the vehicle battery  
ground terminal or any other  
factory ground points.  
(+) 12 Volt Power  
4.  
- Connect this  
terminal through a FUSE or CIRCUIT  
BREAKER to the positive terminal of  
the vehicle battery or the positive  
terminal of an isolated audio  
system battery.  
WARNING: Always protect this power wire by installing a fuse  
or circuit breaker of the appropriate size within 12  
inches of the battery terminal connection.  
Remote Turn On  
5.  
- This terminal  
FIGURE 2—AMPLIFIER CONNECTIONS 1200/5 REAR  
1
6
5
4
2
3
REAR  
R
FRONT  
R
FUSE  
3
SUB OUT  
40A  
x
BATT  
REM  
GND  
L
L
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© 2003 Directed Electronics, Inc  
 
TOP PANEL CONTROLS  
Input Gain Adjustment  
Subsonic Frequency Switch  
- Sets  
1.  
- Controls  
6.  
7.  
amplifier sensitivity and is used to  
match the input level of the ampli-  
fier to the output level of the signal  
source.  
the cutoff point for subsonic  
frequencies at 30 Hz. Frequencies  
below will be attenuated by 24db  
per octave.  
Crossover Selection Switch  
2.  
-
Sub Input Switch  
- Controls where  
Controls the type of filter for the on-  
board active crossovers. FLAT does  
not attenuate any frequencies and is  
for full-range speaker systems. HPF  
attenuates low frequencies and is  
used for mid-range speakers and  
tweeters. LPF attenuates high  
frequencies and is used for  
subwoofers speakers.  
the subwoofer section of the ampli-  
fier gets its signal. If the SUB INPUT  
switch is in the ON position the  
subwoofer section of the amplifier  
will get its signal internally summed  
from the channels one through four  
RCA jacks, and the SUB RCA jacks  
do not need input. If in the OFF  
position the SUB RCA jacks must  
have input.  
Crossover Frequency Adjustment  
3.  
4.  
5.  
-
Adjusts the crossover point for the  
on-board active crossovers.  
Input Parallel Switch  
8.  
- Controls the  
input signal to the indicated chan-  
nels. If the 3+4 switch is ON, chan-  
nels three and four will derive their  
signal from channels one and two  
RCA jacks and no input is needed. If  
the 3+4 switch is OFF, channels  
three and four RCA jacks must have  
input.  
Sub Phase Switch  
- Changes the  
phase of the subwoofer speaker  
output by 180 degrees  
Bass EQ Switch -  
Adds 8db of addi-  
tional boost to the subwoofer output  
when active.  
10  
© 2003 Directed Electronics, Inc  
 
FIGURE 3—AMPLIFIER CONTROLS 1200/5 TOP  
5
6
4
PHASE  
BASS EQ  
SUBSONIC  
0
180  
FREQ  
OFF  
ON  
OFF  
ON  
FREQ  
FREQ  
3
2
50Hz50Hz305H0z0Hz500Hz250Hz  
1+2  
3+4  
SUB  
LPF  
HPF  
LPF  
HPF  
FLAT  
FLAT  
GAIN  
GAIN  
GAIN  
1
MIN  
MAX  
MIN  
ON  
MAX  
MIN  
ON  
MAX  
7
8
OFF  
3+4  
INPUT  
OFF  
SUB  
INPUT  
TOP PANEL FEATURES  
Control Panel Cover  
Remove/Install  
The gain and filter controls are located  
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.  
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.  
11  
© 2003 Directed Electronics, Inc  
 
SPEAKER WIRING DIAGRAMS  
Five channel operation (top view)  
Three channel operation (top view)  
12  
© 2003 Directed Electronics, Inc  
 
COMBINED AMPLIFIERS  
External Synced Bridged  
The Directed 1200/5 channel five  
subwoofer section can be combined with The External Synced Bridged combination  
a 750d in a master/slave combination includes a master amplifier and a slave  
for increased power and accurate level amplifier.  
matching. They are the Parallel Synced  
In this master/slave combination the  
Gain and External Synced Bridged combi-  
master amplifier’s pre-amp controls  
nations.  
remain active and the slave amplifier’s  
pre-amp is bypassed. This allows the  
master amplifier to control gain, filter,  
and sub-level on both amplifiers.  
NOTE:  
The Directed 1200/5 is always the master amplifier  
in these combinations.  
Parallel Synced Gain  
The Parallel Synced Gain combination  
includes a master amplifier and a slave  
amplifier.  
This combination allows the amplifiers to  
drive common subwoofer loads while  
being synced together via an out-of-  
phase audio pre-amp signal from the  
master amplifier. In this wiring configura-  
tion the master amplifier sends the posi-  
tive signal to the speaker while the slave  
amplifier sends the negative signal,  
making an externally bridged speaker  
combination. (Refer to External Synced  
In this master/slave combination the  
master amplifier’s pre-amp controls  
remain active and the slave amplifier’s  
pre-amp is bypassed. This allows the  
master amplifier to control gain, filter,  
and sub-level on both amplifiers.  
The Parallel Synced Gain combination Bridged section of this guide for ampli-  
allows the amplifiers to drive their own fier and speaker connection diagrams.)  
separate subwoofer(s) while being  
Combined Amplifiers Gain  
and Filter Settings  
synced together via an in-phase audio  
pre-amp signal from the master amplifier.  
Set the Subsonic, EQ, and other filter  
Woofer wiring connections to the ampli-  
settings on the master amplifier to the  
fier subwoofer outputs in this combina-  
positions that achieve the best sound  
tion should be standard in-phase configu-  
quality. Follow the adjustment guidelines  
rations, creating a parallel speaker  
discussed in the Crossover and Gain  
combination. (Refer to Parallel Synced  
Adjustment section of this guide.  
Gain section of this guide for amplifier  
and speaker connection diagrams.)  
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© 2003 Directed Electronics, Inc  
 
PARALLEL SYNCED GAIN CONNECTIONS/SETTINGS  
Input/Output Signal  
Slave/Master Switch  
- Set the  
1.  
- Connect these 4.  
RCA jacks as described in the Front  
Panel Connections/Controls section  
of this guide.  
slave/master switch of the 750d to  
the slave position. This will put the  
I/O RCA jack in the SLAVE IN mode  
so it will accept the audio signal  
from the 1200/5’s sync out RCA  
jack.  
Remote Sub Level Control  
2.  
- Connect  
the Remote Sub Level control to the  
1200/5 only. The 1200/5 control  
panel subwoofer adjustments are 5.  
used first to set the overall gain for  
all synced amplifiers, then the  
Remote Sub Level control can adjust  
the gain of all synced amplifiers by  
adjusting its control knob.  
Subwoofer Speaker Connection  
- In  
this amplifier combination each  
amplifier must drive its own separate  
subwoofer(s). Connect the speaker  
terminals of each amplifier to any  
combination of one or more  
subwoofers that results in nominal  
impedance between 1 and 4 ohms.  
Make sure that each amplifier sees  
the same speaker impedance.  
Signal Connection  
3.  
- Connect an RCA  
cable between the SYNC OUT RCA  
jack of the 1200/5 and the SLAVE  
IN RCA jack of the slaved 750d as  
shown in Figure 5.  
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© 2003 Directed Electronics, Inc  
 
FIGURE 5—PARALLEL SYNC GAINED 750d/1200/5  
Master (1200/5)  
1
Do Not Use  
1+2  
3+4  
SUB  
1-4 OUT  
SUB OUT  
SYNC OUT  
R
L
POWER  
REMOTE  
BRIDGE OUT  
PROTECTION  
2
Slave (750d)  
MIN  
MAX  
SUB LEVEL  
3
INPUT  
I
SLAVE  
MASTER  
SLAVE IN  
SYNC OUT  
R
L
REMOTE  
BRIDGE OUT  
Do Not Use  
4
Do Not Use  
Speaker Wiring (top view)  
MASTER  
1200/5  
-
SUB  
SUBWOOFER  
+
-
+
SLAVE  
750D  
-
-
5
+
-
+
+
NOTE:  
The dual + and -- sub-out terminals of the 750d are paralleled internally and the  
combined load impedance should be taken into consideration when connecting multiple  
subwoofers.  
15  
© 2003 Directed Electronics, Inc  
 
Input/Output Signal  
1.  
2.  
- Connect  
these RCA jacks as described in the  
Front Panel Connection/Controls  
section of this guide.  
Remote Sub Level Control  
- Connect  
the Remote Sub Level control to the  
1200/5 only. The 1200/5 control  
panel subwoofer adjustments are  
used first to set the overall gain for  
all synced amplifiers, then the  
Remote Sub Level control can  
adjust the gain of all synced ampli-  
fiers by adjusting its control knob.  
Signal Connection  
3.  
4.  
- Connect an RCA  
cable between the BRIDGE OUT  
jack of the 1200/5 and the SLAVE  
IN jack of the slaved 750d as  
shown in Figure 6.  
Slave/Master Swj 1 Tr T* (u)Tj 0 Tr 0.3607 0 TD (t)T552R61ront Panel Connection/Cont  
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© 2003 Directed Electronics, Inc  
FIGURE 6—EXTERNAL SYNC BRIDGED 600d/1100d5  
Master (1200/5)  
1
Do Not Use  
1+2  
3+4  
SUB  
1-4 OUT  
SUB OUT  
SLAVE  
MASTER  
SYNC OUT  
R
L
POWER  
REMOTE  
BRIDGE OUT  
PROTECTION  
2
Slave (750d)  
MIN  
MAX  
SUB LEVEL  
3
INPUT  
I
SLAVE  
MASTER  
SLAVE IN  
SYNC OUT  
R
L
REMOTE  
BRIDGE OUT  
Do Not Use  
Do Not Use  
4
Speaker Wiring (top view)  
MASTER  
1200/5  
SUB  
-
+
SLAVE  
750D  
12 gauge  
+
-
5
+
-
-
12 gauge  
+
NOTE:  
The dual + and -- sub-out terminals of the 750d are paralleled internally and the  
combined load impedance should be taken into consideration when connecting multiple  
subwoofers.  
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© 2003 Directed Electronics, Inc  
 
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.  
For full-range and simultaneous stereo/mono bass applications, the crossover  
selection switch should be set to FLAT. If the amplifier is driving your subwoofers,  
set the switch to LPF, and for mid-bass/midrange output, set to HPF.  
The crossover frequency control needs to be adjusted to suit your particular system.  
For subwoofer applications, try to keep the setting low enough to prevent the  
image smearing (you should not be able to hear male voices from the subwoofer)  
but not so low as to create a gap between the subwoofer and the mid-  
bass/midrange speakers. For mid-bass/midrange settings, try to keep the setting  
low enough to keep your sound stage in front of you, without overdriving the  
speaker. It will be to your advantage to spend some extra time with this adjust-  
ment, listening to familiar music or system set-up discs to achieve the kind of  
musical reproduction that you prefer.  
The gain adjustment allows you to set proper signal match for clean, quiet ampli-  
fier 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 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 amplifier until distortion is  
heard, then back off the gain until the distortion is not audible. This setting will  
allow you to reach full output with all but the quietest of source material, while  
avoiding excessive noise in the system.  
For systems using the Remote Sub Level Adjustment, increase the subwoofer gain  
on the amplifier by 25% and set the Remote Sub Level knob to the center position  
after making all system gain and filter adjustments. This will give the Remote Sub  
Level Control a wider range of adjustment to the subwoofer output.  
The same procedure should be used for adjusting the amplifier when the on-board  
crossover is set to LPF or HPF, but you will also have to take into consideration the  
effect that gain adjustment has on system frequency response and imaging.  
Again, plan on spending some time with music that you know, getting the gain  
and crossover settings the way you like. Test discs and analyzers may help with this  
process, but in the end it's your ears that count - listen to the music!  
18  
© 2003 Directed Electronics, Inc  
 
SPECIFICATIONS  
Directed model 1200/5 Ch 1-4 Sub Ch.  
75  
watts  
275  
watts  
RMS continuous power per channel, Channels 1-4 driven into  
4 ohms from 20 to 20,000 Hz, with less than 0.08% total  
Harmonic Distortion @ 14.4 VDC. Sub channel driven into 4  
ohms from 20-250 Hz, with less than 0.4% THD @ 14.4 VDC.  
RMS continuous power per channel, Channels 1-4 driven into  
2 ohms from 20 to 20,000 Hz, with less than 0.1% Total  
Harmonic Distortion @ 14.4 VDC. Sub channel driven into 2  
ohms from 20-250 Hz, with less than 0.6% THD @ 14.4 VDC.  
125  
watts  
400  
watts  
RMS continuous power, 3-channel operation, channels 1-4  
bridged into 4 ohms from 20 to 20,000 Hz, with less than  
0.1% Total Harmonic Distortion @ 14.4 VDC. Sub channel  
driven into 1 ohm from 20-250 Hz, with less than 0.6% THD  
@ 14.4 VDC.  
250x2  
watts  
600  
watts  
Dynamic power rating (IHF-202 Standard) at minimum load  
1300 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  
12 dB/octave, continuously  
variable 50 to 500 Hz  
Subwoofer Crossover  
Low pass 24 dB/octave,  
variable 30 to 250Hz  
Bass Equalization  
Input Impedance  
Input Sensitivity  
Switchable 8 dB/octave,  
20K ohms  
Variable from 150 mV to  
8 volt  
Output Impedance  
(ch 1-4)  
2 to 8 ohms, stereo  
4 to 8 ohms, bridged  
1 to 4 ohms  
(Sub ch.)  
Supply Voltage  
Fusing and Power  
10 to 16 VDC  
120A  
Minimum Cable Requirements (AWG)  
(Per amp, trunk mounted)  
#4  
19  
© 2003 Directed Electronics, Inc  
 
The company behind this system is Directed Electronics, Inc.  
Since its inception, Directed has had one purpose, to provide customers with the  
finest vehicle security, car stereo products, rear seat entertainment, and accessories  
available. The recipient of more than 20 patents in the field of advanced electronic  
technology, Directed is ISO 9001 registered.  
Directed Electronics, Inc.  
Vista, California 92081  
Directed® is committed to delivering world-class quality  
products and services that excite and delight our customers.  
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  
-
G45059 11/03  
 

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