DEI 1100d Manuale utente
Models 600d/1100d
OWNER’S MANUAL
© 1999 Directed Electronics, Inc
CONGRATULATIONS
Thank you for choosing a Directed Audio
power amplifier. Directed has been the
leader in high-quality and innovative
security products in the U.S. since
1990. Now we introduce to the car
audio industry the same winning
formula - products that meet the strin-
gent standards of today’s mobile elec-
tronics enthusiast yet priced 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 covered by a one year parts-
and-labor limited warranty. Please save
your sales receipt and refer to the
warranty section of this manual for
complete details.
1
© 1999 Directed Electronics, Inc
TABLE OF CONTENTS
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.
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
Synced Gain Operation . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 8
External Synced Bridged Operation . . . . . . . . . . . . . . . . . . .Page 10
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 12
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 13
© 1999 Directed Electronics, Inc
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INSTALLATION GUIDELINES
1. Please read the owner’s manual
carefully before you install the
amplifier.
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 amplifiers.
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. Make sure that
the metal area is part of the car
chassis or frame, not a separate
part with poor electrical connection
to the chassis.
7. Always fuse your power connection
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
MECP study guide. Minimum wire
gauge recommendations for the
individual amplifiers are listed on
the specification page. It is a good
idea to 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 upgrade it to a
gauge of wire that can accommo-
date the extra load created by your
amplifier installation. Remember,
the amplifier can only deliver its
rated output when it is not current
limited by the power and ground
supply wires.
8. This amplifier is designed to drive a
speaker load that measures from 1-
4 ohms. Keep in mind that heat is
the long-term enemy of automotive
electronics and that the lower your
speaker load, the more heat
© 1999 Directed Electronics, Inc
INSTALLATION GUIDELINES (continued)
3
is generated. For low impedance
speaker applications or restricted
ventilation installations, an external
cooling fan may be advisable.
9. Your connections to the amplifier’s
speaker and power terminals
should be made with crimped
spade lugs, and the battery and
ground connections to the vehicle
should be made with crimped 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
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.
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© 1999 Directed Electronics, Inc
AMPLIFIER CONNECTIONS
Refer to Figure 1 for details.
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 occu-
pied by factory wires! Make sure
your chassis connection is secure by
removing any paint at the ground
point, and using a crimped, soldered
terminal at both ends of the wire.
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. 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. YOU MUST PROTECT THIS
WIRE WITH A FUSE or circuit breaker
located close to the battery.
4. POWER FUSE - protects the amplifier
against electrical damage. DO NOT
REPLACE THE FUSE WITH LARGER
AMPERAGE FUSES!
5. POWER/PROTECTION LED’S - the
green Power LED lights to indicate
normal operation. The red Protection
LED lights to indicate amp shutdown
due to thermal, short circuit, DC
offset, or over-current conditions.
6. SUBWOOFER OUTPUT TERMINALS
connect the subwoofers to these
terminals. The terminals are paral-
leled internally, but two sets are
provided for convenience in
connecting multiple subwoofers.
FIGURE 1—AMPLIFIER CONNECTIONS
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© 1999 Directed Electronics, Inc
1. RCA INPUT JACKS - accepts line-
level outputs from head units or
signal sources at voltages from 200
mV to 8 volts.
2. RCA INVERT IN JACK - use this jack
to accept signal from another
600d/1100d when operating in
synced slave mode. This jack also
supplies an in-phase output when
the unit is set to “Master”.
3. RCA INVERT OUT JACK - use this
jack to send an inverted phase
signal to another 600d/1100d
operating in synced slave mode.
4. MASTER/SLAVE INVERT SWITCH -
selects operating mode for synced
operation. For normal operation set
to master/0.
5. GAIN ADJUSTMENT - controls the
gain (input sensitivity) of the
amplifier.
6. SUBSONIC FILTER - Switchable vari-
able subsonic filter prevents
damage to subwoofers in vented
and free-air applications.
7. BASS EQ - This switch activates an
8 dB bass boost circuit. Use as
necessary for low frequency
enhancement.
8. CROSSOVER FREQUENCY - controls
the cutoff frequency of the built-in
low-pass crossover.
9. OUTPUT PHASE INVERT SWITCH -
controls the output phase of the
amplifier. The output signal inverts
with the switch set to 180.
10. REMOTE SUB LEVEL - controls gains
of the amplifier.
AMPLIFIER CONTROLS
Refer to Figure 2 for details.
FIGURE 2—AMPLIFIER CONTROLS
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© 1999 Directed Electronics, Inc
SPEAKER WIRING DIAGRAMS
Speaker nominal impedance must be at least 1 ohm.
Single subwoofer connection
Two subwoofer connection
Parallel speaker nominal impedance must be at least 1 ohm. Amplifier parallels the
speaker terminals internally.
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© 1999 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. Refer to the additional instructions on pages - for gain and crossover settings
in external synced mode.
• Because the 600d/1100d are only suited for subwoofer applications, the low-pass
crossover is active at all times. The crossover point is adjustable to allow more precise
system operation.
• Try and keep the setting low enough to prevent 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. It will be to your advan-
tage to spend some extra time with this adjustment, 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 amplifier
operation. 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 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.
• You should take into consideration the effect that gain adjustment has on system
frequency response and staging. 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!
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© 1999 Directed Electronics, Inc
Refer to Figure 3 for details.
FIGURE 3
SYNCED GAIN OPERATION (control panel/inputs)
1. Master/Slave switch - set switch on
the first amp to Master/0 for most
systems. Set switch to Master/180
to invert the phase of both the
master and any synced amplifiers.
Set the Master/Slave switch on all
synced amplifiers to Slave.
2. Connect input signal from the head
unit or processor to the input RCA
jacks of the master amplifier.
3. Connect an RCA cable between the
INVERT IN RCA jack of the master
amplifier and the INVERT IN jack of
slaved amplifiers. Use “Y” adapters
to split the signal to each slaved
amplifier.
4. For best matching of input gains,
connect the unused INVERT OUT
RCA jack of the master amplifier to
the INVERT OUT RCA jack of the
slaved amplifiers. The slaved ampli-
fier ignores the signal supplied to
the INVERT OUT jack, but the addi-
tional RCA cable connection helps
minimize ground potential differ-
ences between the master and
slave amplifier inputs and results in
a more accurate output voltage
match .
5. Set subsonic, EQ, and crossover
controls to the positions for best
results.
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