model
1100.5
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CONGRATULATIONS
Congratulations for choosing a Viper
Audio power amplifier from Directed
Electronics, the industry leader in high
quality automotive security and audio
equipment since 1990.
delight the mobile sound enthusiast with
years of high-quality audio reproduction.
Viper Audio power amplifiers come with
a two-year limited warranty if installed
by an authorized Viper dealer. If not
installed by an authorized dealer, Viper
Audio power amplifiers are covered by a
one-year, parts-and-labor limited
warranty.
With the introduction of Viper Audio
power amplifiers, Directed Electronics
continues to set new standards of
performance, reliability, and affordability
in the mobile electronics industry.
Be sure to retain your original sales
receipt and refer to the warranty section
of this guide for full details about your
coverage.
Featuring high-efficiency MOSFET power
supplies, flexible on-board crossovers,
and state of the art audio design, Viper
Audio power amplifiers will excite and
TABLE OF CONTENTS
Limited Two-Year Consumer Warranty . . . . . . . . . . . . . . . . . . . . . . . . .4
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Wire Connector Plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Front Panel Connections/Status LED . . . . . . . . . . . . . . . . . . . . . . . . . .8
Rear Panel Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Top Panel Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Top Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Speaker Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Combined Amplifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Parallel Synced Gain Connections/Settings . . . . . . . . . . . . . . . . . . . . .15
External Synced Bridged Connections/Settings . . . . . . . . . . . . . . . . . . .17
Crossover Settings and Gain Adjustment . . . . . . . . . . . . . . . . . . . . . . .19
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
3
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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 CALI-
FORNIA LAWS IN SAN- DIEGO COUNTY,
CALIFORNIA.
4
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FEATURES
„ Dual high-speed MOSFET switching
„ Variable 24 dB/octave subsonic
filter and phase adjustment (sub
channel).
power supplies.
„ Complimentary bipolar outputs (ch
1-4), and high-current MOSFET
outputs (sub channel).
„ Remote subwoofer level control and
variable 12 dB bass EQ function.
„ Five channel expandable architec-
ture supports single or multiple amp
system designs.
„ Two, four, and six channel input
allows full access to source or
processor output functions.
„ Thermal, DC offset, reverse polarity,
and short circuit protection with
status LED.
„ Master/slave function allows
synced bridged or parallel operation
with model d600.1.
„ Top-mounted controls located under
illuminated Viper snake logo trim
piece.
„ Summed stereo full-range RCA
output jacks.
„ Gold-plated screw-block plugs and
RCA jacks ensure maximum signal
transfer.
„ 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).
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.
5
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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
spotwelded.
8. This amplifier is designed to drive a
speaker load that measures from 2
to 8 ohms (sub channel, 1 to 4
ohms). Keep in mind that heat is
the long-term enemy of automotive
7. Always fuse your power connection
within eight to ten inches of the
6
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electronics 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.
WIRE CONNECTOR PLUGS
Power and speaker wire connections on
Viper Audio power amplifiers are
performed with the use of specially
designed connectors that allow for ease
of wire termination and installation
convenience.
2. Cut wires to the minimum length
necessary.
3. Trim the wire ends so bare wire
does not protrude from the
connector after termination.
4. Always tighten the connector
screws firmly at least twice, once
during installation and once more
before returning the car to the
customer.
Poor connections are a common cause
of poor sound quality or amplifier perfor-
mance. Making proper wire connections
is paramount to a reliable, quality sound
system.
CAUTION: Over tightening the screws can cause them to
strip, creating loose connections. Tighten the
screws twice firmly for a permanent, solid connec-
tion.
Please follow these recommendations to
ensure a problem free installation:
1. Always use the proper gauge wire
for the connector.
7
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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
eight volts.
sends an out-of-phase signal to a
d600.1 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 eight 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 d600.1 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 Viper amplifier. Even though the connectors fit
properly, the control knob and connector pin posi-
tions may be different and the amplifier will be
damaged.
FIGURE 1—AMPLIFIER CONNECTIONS 1100.5 FRONT
2
4
5
1
6
7
3
8
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REAR PANEL CONNECTIONS
Remote Turn On
(+) 12 Volt Power
- Connect this
1.
- This terminal
5.
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.
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.
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.
Speaker Out Terminals
2.
3.
4.
- Connect
the speakers to these terminals.
(Refer to the Speaker Wiring
Diagrams section of this guide.)
Sub Out Terminals
- Connect
subwoofers 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.
FIGURE 2—AMPLIFIER CONNECTIONS 1100.5 REAR
1
6
5
4
3
2
9
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TOP PANEL CONTROLS
Input Gain Adjustment
1.
- Controls
used for mid-range speakers and
tweeters. LPF attenuates high
frequencies and is used for
subwoofers speakers.
amplifier sensitivity and is used to
match the input level of the ampli-
fier to the output level of the signal
source.
Sub Input Switch
8.
- Controls where
Crossover Frequency Adjustment
Adjusts the crossover point for the
on-board active crossovers.
2.
3.
4.
5.
-
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.
Sub Phase Switch
- Changes the
phase of the subwoofer speaker
output by 180 degrees
Variable Bass EQ -
Adds 0 to12db of
additional boost to the subwoofer
output when active.
Subsonic Frequency Adjustment
-
Input Parallel Switch
9.
- Controls the
Adjusts the cutoff point for subsonic
frequencies. Frequencies below the
adjustment point will be attenuated
by 24db per octave.
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.
Variable Subsonic Filter Switch
Turns the Variable subsonic filter
control on/off
6.
7.
-
Crossover Selection Switch
-
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
10
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FIGURE 3—AMPLIFIER CONTROLS TOP
5
6
4
3
2
1
7
8
9
11
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TOP PANEL FEATURES
Control Panel Cover
2. Apply two of the precut pieces of
adhesive tape to the corners of the
window that don't have tape. Make
sure to apply the tape to the side
that makes contact with the cover.
Save the other two precut pieces of
tape for future use.
The amplifier’s gain and filter controls
are mounted under the elliptical control
panel cover. Magnets hold the cover
snugly and allow easy access.
To install the cover
„
- Place the
straight end of the control panel
cover into the notched end of the
amplifier’s top panel while
elevating the curved end. Lower the
curved end of the cover until the
magnets make contact.
3. Turn the illuminated window so the
Viper snake logo will be in an
upright position when the cover is
re-attached to the amplifier. Press
the window onto the underside of
the control panel cover using the
positioning pins for alignment.
To remove the cover
„
- Place a finger
on the curved end of the cover
while lifting up the straight end
with your thumb. When the
magnets lose contact, lift and
remove the cover.
Viper Badge Mounting
The Viper Badge can be rotated in 90-
degree increments to accommodate the
amplifier’s final mounting position.
Illuminated Window
Alignment
1. Determine the final mounting posi-
tion of the amplifier.
The illuminated window comes attached
to the control panel cover with a light
adhesive tape. An additional supply of
precut adhesive tape is included in the
hardware pack.
2. Determine the position required for
the badge to be viewed horizontally.
3. Remove the protective cover for the
adhesive tape on the under side of
the badge.
1. Firmly hold the control panel cover
while gently pressing against the
window from the top. If the
window will not release easily use a
small flat tool to pry it loose. Pry
slowly and evenly from several
points to avoid deforming or
cracking the window.
4. Align the badge guideposts with the
holes in the amplifier top panel.
5. Press down firmly until the logo is
securely attached to the amplifier.
12
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SPEAKER WIRING DIAGRAMS
Five channel operation (bottom view)
Three channel operation (bottom view)
NOTE:
The dual + and -- subout terminals of the 1100.5 are paralleled internally and the combined load impedance should be taken
into consideration when connecting multiple subwoofers.
13
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COMBINED AMPLIFIERS
External Synced Bridged
The External Synced Bridged combination
includes a master amplifier (1100.5)
and a slave amplifier (d600.1).
The Viper 1100.5 channel five
subwoofer section can be combined with
a d600.1 in a master/slave combination
for increased power and accurate level
matching. They are the Parallel Synced
Gain and External Synced Bridged combi-
nations.
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.
NOTE:
The Viper 1100.5 is always the master amplifier in
these combinations.
Parallel Synced Gain
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
The Parallel Synced Gain combination
includes a master amplifier (1100.5)
and a slave amplifier (d600.1).
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.)
14
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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 d600.1
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 1100.5’s sync out
RCA jack.
Remote Sub Level Control
2.
- Connect
the Remote Sub Level control to the
1100.5 only. The 1100.5 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 1100.5 and the SLAVE
IN RCA jack of the slaved d600.1 as
shown in Figure 5.
15
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FIGURE 5—PARALLEL SYNC GAINED d600.1/1100.5
Master (1100.5)
1
Do Not Use
1+2
3+4
SUB
1-4 OUT SUB OUT
SYNC
OUT
R
L
POWER
REMOTE
BRIDGE
OUT
PROTECTION
2
3
MIN
MAX
SUB LEVEL
Slave (d600.1)
INPUT
I/O
SLAVE MASTER
SLAVE IN
SYNC OUT
R
REMOTE
L
BRIDGE OUT
Do Not Use
Do Not Use
4
Speaker Wiring (bottom view)
Sub
5
NOTE:
The dual + and -- subout terminals of the d600.1/1100.5 are paralleled internally and
the combined load impedance should be taken into consideration when connecting
multiple subwoofers.
16
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EXTERNAL SYNCED BRIDGED CONNECTIONS/SETTINGS
Input/Output Signal
1.
- Connect
audio signal from the 1100.5’s
sync out RCA jack.
these RCA jacks as described in the
Front Panel Connection/Controls
section of this guide.
NOTE:
There is only one master when syncing amplifiers.
Remote Sub Level Control
2.
- Connect
Subwoofer Speaker Connection
5.
- In
the Remote Sub Level control to the
1100.5 only. The 1100.5 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.
this amplifier combination the
subwoofer output terminals of both
amplifiers drive a common
subwoofer load. Use the speaker
connection diagram in Figure 6
when connecting the subwoofers to
the amplifiers. Connect the ampli-
fier’s 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.
Signal Connection
3.
4.
- Connect an RCA
cable between the BRIDGE OUT
jack of the 1100.5 and the SLAVE
IN jack of the slaved d600.1 as
shown in Figure 6.
Slave/Master Switch
- Set the
slave/master switch of the slaved
d600.1 to the slave position. This
will put the I/O RCA jack in the
SLAVE IN mode so it will accept the
WARNING: Two wires of 12AWG minimum must be
connected between the negative sub out termi-
nals of the master and slave amplifiers.
17
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FIGURE 6—EXTERNAL SYNC BRIDGED d600.1/1100.5
Master (1100.5)
1
Do Not Use
1+2
3+4
SUB
1-4 OUT SUB OUT
SYNC
OUT
R
L
POWER
REMOTE
BRIDGE
OUT
PROTECTION
2
3
MIN
MAX
SUB LEVEL
Slave (d600.1)
INPUT
I/O
SLAVE MASTER
SLAVE IN
SYNC OUT
R
REMOTE
L
BRIDGE OUT
Do Not Use
Do Not Use
4
Speaker Wiring (bottom view)
Sub
5
NOTE:
The dual + and -- subout terminals of the d600.1/1100.5 are paralleled internally and
the combined load impedance should be taken into consideration when connecting
multiple subwoofers.
18
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CROSSOVER SETTINGS AND GAIN ADJUSTMENT
Your Viper 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!
19
© 2002 Directed Electronics, Inc
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SPECIFICATIONS
Viper model 1100.5
Ch 1-4 Ch 5
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. Channel 5 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. Channel 5 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. Channel 5 driven
into 1 ohms 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
Damping Factor @ 4 ohm
Crossover (Ch 1-4)
20-20,000 Hz 0.5 dB
(Ch 1-4)
Greater than 100 (Ch 1-4),
50 (sub)
Switchable high or low pass
12 dB/octave, continuously
variable 50 to 500 Hz
Subwoofer Crossover
Bass Equalization
Low pass 24 dB/octave,
variable 30 to 250Hz
Variable, 0 to 12 dB,
centered at 40Hz
Input Impedance
Input Sensitivity
20K ohms
Variable from 150 mV to
8 volt
Output Impedance
(ch 1-4)
(ch 5)
2 to 8 ohms, stereo
4 to 8 ohms, bridged
1 to 4 ohms
Supply Voltage
10 to 16 VDC
120A
Fusing and Power
Minimum Cable Requirements (AWG)
(Per amp, trunk mounted)
#4
20
© 2002 Directed Electronics, Inc
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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 92083
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
© 2002 Directed Electronics, Inc. - All rights reserved - G46058 02/02
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