Directed Electronics 600d, 1100d User Manual

models

600d

1100d

2

© 2002 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 perfor­mance, 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-and­labor 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 . . . . . . . . . . . . . . . . . . . . . . . . .3

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Front Panel Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Rear Panel Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

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

Top Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Speaker Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Combining Amplifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Parallel Synced Gain Connections/Settings . . . . . . . . . . . . . . . . . . . . .13

External Synced Bridged Connections/Settings . . . . . . . . . . . . . . . . . . .15

Multiple Amplifier Combinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Crossover Settings and Gain Adjustment . . . . . . . . . . . . . . . . . . . . . . .18

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

LIMITED TWO-YEAR CONSUMER WARRANTY

3

© 2002 Directed Electronics, Inc

Directed Electronics, Inc. promises to the
original purchaser, to replace this product
should it prove to be defective in workman­ship 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 autho­rized 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 rein­stallation 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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© 2002 Directed Electronics, Inc

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 vehi­cles. Use common sense and practice
safe listening habits when listening to or
adjusting your audio system.

WARNING

FEATURES

 Super-efficient Class D PWM design

runs much cooler than conventional
amps.

 High-speed MOSFET switching

power supply.

 High-current complimentary MOSFET

outputs stable into one ohm loads.

 Thermal, DC offset, reverse polarity,

and short circuit protection with
status LED.

 Master/slave RCA jack functions

support two amps bridged to one
load.

 Top-mounted controls easily

accessed for system tuning.

 Continuously variable 18 dB/

octave low-pass crossover.

 Switchable 30 Hz, 24 dB/octave

subsonic filter.

 Switchable 8 dB bass EQ function.

 Switchable phase adjustment.

 Remote subwoofer level control

supplied.

 Variable input sensitivity optimizes

match with different signal sources.

 Gold-plated wire terminals and RCA

connectors ensure maximum signal
transfer.

 Rugged one-piece extruded heat

sink finished with injection-molded
mounting feet.

5

© 2002 Directed Electronics, Inc

INSTALLATION GUIDELINES

1. Please read this owner’s manual
carefully before installing this ampli­fier.

2. Disconnect the battery ground
terminal prior to making any elec­trical connections.

3. Check for any hazards or obstruc­tions 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 venti­lation 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
spotwelded.

7. Always fuse your power connection
within 8 to 10 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
guide. Minimum wire gauge recom­mendations for the individual ampli­fiers 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 neces­sary, upgrade it by adding an addi­tional 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.

8. This amplifier is designed to drive a
speaker load that measures from 1
to 4 ohms. Keep in mind that heat
is the long-term enemy of automo­tive electronics and the lower your

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© 2002 Directed Electronics, Inc

speaker load, the more heat is
generated. For low impedance
speaker applications or restricted
ventilation installations, an external
cooling fan may be advisable.

9. 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, 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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© 2002 Directed Electronics, Inc

1.

RRCCAA IInnppuutt JJaacckkss -

Accepts line level
outputs from head units or signal
processors at voltages between
150mV and 8 volts.

2.

RRCCAA SSyynncc OOuutt// SSllaavvee IInn JJaacckk

Sync Out - This RCA jack sends a
Synced or in-phase gain matched
output signal to a slave amplifier
when connected in the Parallel
Synced Gain combination. It is a
Synced output when the
slave/master switch is in the
MASTER position only.

Slave In - This RCA jack accepts
input from a master amplifier. It is
for use in the Parallel Synced Gain
and External Synced Bridged combi­nations. It is a slave input when the
slave/master control switch is in
the SLAVE position only.

3.

RRCCAA BBrriiddggee OOuuttppuutt JJaacckk

- This output
sends an out-of-phase signal to a
slave amplifier when connected in
the External Synced Bridged combi­nation. (Refer to the

Combined

Amplifiers

section of this guide)

4.

SSllaavvee//MMaasstteerr SSwwiittcchh

- Controls
whether the amplifier is a slave or
master when connected in
combined amplifier configurations.
(Refer to the

Combined Amplifiers

section of this guide.)

5.

RReemmoottee SSuubb LLeevveell CCoonnttrrooll

- Controls
the subwoofer amplifier gain
controls from a remote location for
ease of adjustment during listening.

WWaarrnniinngg::

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.

FRONT PANEL CONNECTIONS

INPUT I/O

R

L

SLAVE MASTER

REMOTE

SLAVE IN
SYNC OUT

BRIDGE OUT

FIGURE 1—AMPLIFIER CONNECTIONS 600d/1100d FRONT

3

1

4

5

2

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© 2002 Directed Electronics, Inc

1.

SSuubb OOuutt TTeerrmmiinnaallss

- Connect
subwoofers to these terminals.
(Refer to the

Speaker Wiring

Diagrams

section of this guide.)

2.

SSttaattuuss LLEEDDss

- 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.

3.

PPoowweerr FFuusseess -

These fuses protect
the amplifier against internal elec­trical damage and are meant to
protect the amplifier only. All other
power connections should be fused
at the source.

4.

((++)) 1122 VVoolltt PPoowweerr

- 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.

WWAARRNNIINNGG::

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.

RReemmoottee TTuurrnn OOnn

- 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 (P/N #55000) can
be used to supply a remote turn on
signal. DO NOT connect this terminal
to constant (+) 12 volt.

6.

GGrroouunndd -

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.

REAR PANEL CONNECTIONS

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© 2002 Directed Electronics, Inc

REM GND

SUB OUTPUT

BATT

30A x 2

FUSE

POWER

PROTECTION

FIGURE 2—AMPLIFIER CONNECTIONS 600d REAR

15

3

6

2

REM GND

SUB OUTPUT

BATT

30A x 3

FUSE

POWER

PROTECTION

FIGURE 3—AMPLIFIER CONNECTIONS 1100d REAR

4

15

3

6

2

4

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© 2002 Directed Electronics, Inc

TOP PANEL CONTROLS

GAIN FREQ

MIN 30HzMAX 250Hz

PHASE

BASS E Q SUBSONIC

OFF OFF

0

ON ON

180

FIGURE 4—AMPLIFIER CONTROLS TOP

1.

IInnppuutt GGaaiinn AAddjjuussttmmeenntt

- Controls
the amplifier’s sensitivity and is
used to match the input level of the
amplifier to the output level of the
signal source.

2.

CCrroossssoovveerr FFrreeqquueennccyy AAddjjuussttmmeenntt

­Adjusts the crossover point for the
on-board low-pass crossover.

3.

SSuubbssoonniicc FFrreeqquueennccyy SSwwiittcchh

- Sets

the cutoff point for subsonic

frequencies below 30Hz. Frequen­cies below 30Hz will be attenuated
by 24db per octave.

4.

BBaassss EEQQ SSwwiittcchh

- Adds 8db of addi­tional boost to the subwoofer
output when active.

5.

SSuubb PPhhaassee SSwwiittcchh

- Changes the
phase of the subwoofer output by
180 degrees.

4

1

2

3

5

Control Panel Cover

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.

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

SPEAKER WIRING DIAGRAMS

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© 2002 Directed Electronics, Inc

Single subwoofer connection (top view)

Two subwoofer connection (top view)

NNOOTTEE::

The dual + and -- subout terminals of the 600d/1100d are paralleled internally and the combined load impedance should be
taken into consideration when connecting multiple subwoofers.

12

© 2002 Directed Electronics, Inc

The Viper 600d/1100d subwoofer
amplifiers have the capability of
connecting two or more amplifiers of the
same power rating together in a
master/slave combination for increased
power with accurate level matching. They
are the Parallel Synced Gain and External
Synced Bridged combinations.

WWAARRNNIINNGG::

DO NOT attempt to combine amplifiers of different
power ratings. These amplifier combinations work
correctly only if the Master and Slave amplifiers are
identical models.

Parallel Synced Gain

In this master/slave combination the
master amplifier pre-amp controls remain
active and the slave amplifier pre-amp is
bypassed. This allows the master ampli­fier to control gain, filter, and sub-level
on both amplifiers.

This combination allows the amplifiers to
drive their own separate subwoofer(s)
while being synced together via an in­phase audio pre-amp signal from the
master amplifier. Wiring connections to
the amplifier subwoofer outputs in this
combination should be standard in-phase
configurations, creating a parallel
speaker connection. (Refer to

Parallel

Synced Gain

section of this guide for
amplifier and speaker connection
diagrams.)

NNOOTTEE::

One master amplifier can control up to three slave

amplifiers in this combination. Multiple identical
master/slave combinations can be added to any
given system.

External Synced Bridged

In this master/slave combination the
master amplifier pre-amp controls remain
active and the slave amplifier pre-amp is
bypassed. This allows the master amplifier
to control gain, filter, and sub-level on both
amplifiers. 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 subwoofer wiring
configuration the master amplifier sends the
positive signal to the subwoofer while the
slave amplifier sends the negative signal,
making an externally bridged speaker
connection. (Refer to

External Synced

Bridged

section of this guide for amplifier

and speaker connection diagrams.)

NNOOTTEE::

Amplifiers in this combination can only be connected
in matched pairs. Multiple matched pairs may be
added to drive separate subwoofer loads in a given
system.

Combined Amplifiers Gain
and Filter Settings

Set the Subsonic, EQ, and other filter
settings on the master amplifier to the
positions that achieve the best sound
quality. Adjustment guidelines are
discussed in the

Crossover and Gain

Adjustment

section of this guide.

COMBINING AMPLIFIERS

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© 2002 Directed Electronics, Inc

1.

IInnppuutt SSiiggnnaall

- Connect these RCA

jacks as described in the

Front Panel

Connection

section of this guide.

2.

SSllaavvee//MMaasstteerr SSwwiittcchh

 Set the slave/master switch

on the master amplifier to the
MASTER position.

 Set the slave/master switch

on the slave amplifier to the SLAVE
position.

 Setting the slave/master

switch on both amplifiers will auto­matically set the I/O RCA jack
configuration according to each
amplifier’s slave or master designa­tion.

NNOOTTEE::

One master amplifier can control up to three slave
amplifiers in this combination. Multiple identical
master/slave combinations can be added to any
given system.

3.

RReemmoottee SSuubb LLeevveell CCoonnttrrooll

- Connect
the Remote Sub Level Control to the
master amplifier only. The master
amplifiers subwoofer gain is used to
set the overall gain for all synced
amplifiers, then the Remote Sub
Level Control can adjust the gain of
all synced amplifiers.

4.

SSiiggnnaall CCoonnnneeccttiioonn

- Connect an RCA
cable between the SYNC OUT RCA
jack of the master amplifier and the
SLAVE IN RCA jack of the slave
amplifier as shown in the Figure 5.

5.

SSuubbwwooooffeerr SSppeeaakkeerr CCoonnnneeccttiioonn

- In
this amplifier combination each
amplifiers 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 one and four
ohms. Make sure that each amplifier
sees the same speaker impedance.

PARALLEL SYNCED GAIN CONNECTIONS/SETTINGS

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© 2002 Directed Electronics, Inc

FIGURE 5—PARALLEL SYNC GAINED 600d/1100d

5

Subwoofer Wiring (top view)

NNOOTTEE::

The dual + and -- subout terminals of
the 600d/1100d are paralleled inter­nally and the combined load impedance
should be taken into consideration when
connecting multiple subwoofers.

SUB LEVEL

MIN MAX

INPUT I/O

R

L

SLAVE MASTER

REMOTE

SLAVE IN
SYNC OUT

BRIDGE OUT

INPUT I/O

R

L

SLAVE MASTER

REMOTE

SLAVE IN
SYNC OUT

BRIDGE OUT

2

2

Do Not Use

3

Do Not Use

Master

Slave

4

1

Do Not Use

15

© 2002 Directed Electronics, Inc

1.

IInnppuutt SSiiggnnaall

- Connect these RCA

jacks as described in the

Front

Panel Connection

section of this

guide.

2.

SSllaavvee//MMaasstteerr SSwwiittcchh

 Set the slave/master switch

on the master amplifier to the
MASTER position.

 Set the slave/master switch

on the slave amplifier to the SLAVE
position.

 Setting the slave/master

switch on both amplifiers will auto­matically set the I/O RCA jack
configuration according to each
amplifiers slave or master designa­tion.

NNOOTTEE::

Amplifiers in this combination can only be
connected in matched pairs. Multiple matched
pairs may be added to drive separate subwoofer
loads in a given system.

3.

RReemmoottee SSuubb LLeevveell CCoonnttrrooll

­Connect the Remote Sub Level
control to the master amplifier
only. The master amplifier gain
control is used to set the overall
gain for both amplifiers, and
then the Remote Sub Level
control can adjust the gain of
both amplifiers.

4.

SSiiggnnaall CCoonnnneeccttiioonn

- Connect an RCA
cable between the BRIDGE OUT RCA
jack of the Master amplifier and the
SLAVE IN RCA jack of the Slave
amplifier as shown in Figure 6.

5.

SSuubbwwooooffeerr SSppeeaakkeerr CCoonnnneeccttiioonn

- In
this amplifier combination the
Subwoofer speaker terminals of
both amplifiers drive common
subwoofer(s). Use the following
speaker connection diagram when
connecting the subwoofers to the
amplifiers. Connect the amplifiers
speaker terminals to any combina­tion of one or more subwoofers that
results in a nominal impedance
between 2 and 4 ohms. DO NOT
connect loads of less than 2 ohms
when connecting to amplifiers in
the External Synced Bridged combi­nation.

WWAARRNNIINNGG::

Two wires of 12AWG minimum must be
connected between the negative sub out termi­nals of the master and slave amplifiers.

EXTERNAL SYNCED BRIDGED CONNECTIONS/SETTINGS

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© 2002 Directed Electronics, Inc

FIGURE 6—EXTERNAL SYNC BRIDGED 600d/1100d

5

Subwoofer Wiring

NNOOTTEE::

The dual + and -- subout terminals of the
600d/1100d are paralleled internally
and the combined load impedance
should be taken into consideration when
connecting multiple subwoofers.

The audio signal to the slave amplifier is
180° out of phase. The subwoofer’s
negative terminal must be connected to
the slave amplifier’s positive terminal.

SUB LEVEL

MIN MAX

INPUT I/O

R

L

SLAVE MASTER

REMOTE

SLAVE IN
SYNC OUT

BRIDGE OUT

INPUT I/O

R

L

SLAVE MASTER

REMOTE

SLAVE IN
SYNC OUT

BRIDGE OUT

2

2

Do Not Use

3

Do Not Use

Master

Slave

4

1

Do Not Use

MULTIPLE AMPLIFIER COMBINATIONS

17

© 2002 Directed Electronics, Inc

The Directed 600d/1100d subwoofer
amplifiers can also be used in multiples
of the master/slave combinations
allowing for unlimited expansion to a
systems subwoofer section. To use
multiples of amplifier combinations the
following directions must be adhered to
for best results.



AAuuddiioo ssiiggnnaall

- Divide the head unit
or processor audio signal to the
master amplifiers by using RCA Y
adapters. Be sure to divide them an
even number of times to ensure the
input level at each master amplifier
is matched.



RReemmoottee SSuubb LLeevveell CCoonnttrrooll

- The
Remote Sub Level Control cable can
be divided several times to connect
to each master amplifier. This can
be accomplished by using one or

more Directed Remote Sub Level
cable splitters. Standard single-to­double phone line splitters and
accessories from a local electronics
store can also be used.

For systems with more than two
master/slave combinations, use
multiple single-to-double splitters.
Do not use phone splitters that
divide the signal more than once
per splitter, or splitters designed for
multiple uses.



AAmmpplliiffiieerr ccoonnffiigguurraattiioonn

- Set up
each master/slave amplifier combi­nation as described for the combi­nation type being used. (Refer to
the

Parallel Synced Gain

or the

External Synced Bridged

section of
this guide for amplifier and speaker
connection descriptions.)

CROSSOVER SETTINGS AND GAIN ADJUSTMENT

18

© 2002 Directed Electronics, Inc

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.

 Because this amplifier is only designed 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
advantage 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 ampli-

fier operation. 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.

 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!

SPECIFICATIONS

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© 2002 Directed Electronics, Inc

275 425
watts watts

0.4% THD 0.5%

Directed model 600d 1100d

Signal-to-Noise Ratio Greater than 80 dB
Frequency Response 20-250 Hz +0, -1 dB
Damping Factor 50 (typical)
Crossover Low-pass 18 dB/octave,

variable from 30 to
250 Hz

Subsonic Filter Switchable 30 Hz,

24 dB/octave

Bass Equalization Switchable 8 dB,

centered at 40Hz
Input Impedance 20K ohms
Input Sensitivity Variable from 150 mV

to 8 volt
Output Impedance 1 to 4 ohms
Supply Voltage 10 to 16 VDC
Fusing and Power 60A 90A
Minimum Cable Requirements (AWG) #8 #4

(Per amp, trunk mounted)

750 1500

watts watts

400 800
watts watts

0.6%

THD 0.7%

600 1100
watts watts

0.8%

THD 0.9%

800 1600
watts watts

1200 2200

watts watts

RMS continuous power driven into 4 ohms from 20 to 250
Hz @ 14.4 VDC at rated power/load.

RMS continuous power driven into 2 ohms from 20 to 250
Hz @ 14.4 VDC at rated power/load.

RMS continuous power driven into 1 ohm from 20 to 250
Hz @ 14.4 VDC at rated power/load.

Dynamic power rating (IHF-202 Standard) minimum load.

RMS continuous power driven into 4 ohms from 20 to 250

Hz @ 14.4 VDC in synced bridge mode (bridged pair).

RMS continuous power driven into 2 ohms from 20 to 250
Hz @ 14.4 VDC in synced bridge mode (bridged pair).

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® 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 more information about our products and services

© 2002 Directed Electronics, Inc. - All rights reserved - G45014/16 02/02