DD Audio DM500a Manuale utente
OWNER’S MANUAL
DM500a, DM1000a, DM1500, DM2500
CLASS D
MONOBLOCK AMPLIFIER
DD AUDIO / CLASS D MONOBLOCK AMPLIFIER /1
Thank you for purchasing a DD Audio amplifier. DD Audio amplifiers are
painstakingly designed to provide years of high-performance listening
pleasure. To achieve optimum performance we suggest you have your
amplifier installed by an Authorized DD Audio Dealer. It is also highly
recommended that you read this Owner's Manual to familiarize yourself
with the many features of your amplifier.
The DM SERIES contains monoblock amplifiers. These amps are
engineered specifically for low frequency car audio reinforcement.
Designed with the goal of being the best amps on the market for the
everyday bass enthusiast. The DM SERIES will be the soul of your audio
system delivering clean, powerful audio. These amps feature compact
chassis, strong power, logical controls and efficient design. No shortcuts
were taken when deciding on the internal components and feature sets.
Our engineers paid extremely close attention to every stage of the DM
SERIES circuit design; and utilized high speed controller chipsets,
efficient power devices, precise thermal management and the latest in
IC technology. We hope you enjoy using this DD Audio product, and if
you have any questions regarding setup or installation, please contact
the DD Audio technical support team.
INTRODUCTION
WARNING
DD Audio amps are built to play at high volumes beyond
what your ears can safely handle for extended periods of
time. Prolonged exposure to excessively high volume
can cause permanent damage to your hearing.
In addition, operation of a motor vehicle while
listening to audio equipment at high volume levels may impair your ability
to hear external sounds such as: horns, warning signals, or emergency
vehicles; thus, constituting to a potential traffic hazard. You may also find
your state has laws governing the volume of an audio system in a car.
Please be aware of all local and state laws in your area. So, be smart,
and behave yourself… As much as possible.
DM SERIES DESIGN FEATURES:
• MOSFET POWER SUPPLY AMPLIFIER
• DOUBLE SIDED THROUGH HOLE PCB
• VARIABLE 24dB/Oct. CROSSOVERS
• STRAPPABLE CONNECTION (DM1500/DM2500)
• RCA PASS THROUGH (DM500a/DM1000a)
• REMOTE GAIN CONTROL W/ LOW VOLTAGE INDICATOR AND
CLIPPING INDICATOR
• 5-WAY PROTECTION: SPEAKER SHORT, THERMAL,
OVERLOAD, HI/LOW VOLTAGE, DC OFFSET
• 8.5~16V WORKING VOLTAGE
DD AUDIO / CLASS D MONOBLOCK AMPLIFIER /2
TECHNICAL SPECIFICATIONS
DD AUDIO / CLASS D MONOBLOCK AMPLIFIER / 3
DM500a DM1000a DM1500 DM2500
1 1 1 1
210 470 581 813
380 770 1006 1413
500 1000 1500 2500
800 1500 2300 3000
80A 150A 230A 300A
10~200Hz 10~200Hz 15~200Hz 15~200Hz
>80dB >80dB >85dB >85dB
>150 >150 >150 >150
4V-0.1V 4V-0.1V 4V-0.1V 4V-0.1V
Y Y Y Y
4 4 0 0
12 12 10 10
7.87x4.92x1.85 11.8x4.92x1.85 13.38x6.88x2.16 17.71x6.88x2.16
200x125x47 300x125x47 340x175x55 450x175x55
Test Voltage
14.4V
Channels
Continuous
Wattage
4 Ohm
2 Ohm
1Ohm
Dynamic
Wattage
Max Current
Draw
Frequency
Response
S/N Ratio
Damping Factor
RCA Input
Voltage
Sensitivity
Remote
Subwoofer
Control
Power Wire
Gauge In
Speaker Wire
Gauge Out
Dimensions: in
Dimensions: mm
DD AUDIO / CLASS D MONOBLOCK AMPLIFIER / 4
POWER LED:
When illuminated Indicates amplifier
is grounded, and receiving +12V and
REM power.
LO-VOLT LED:
When illuminated or flashing indicates
the amplifier is not receiving the
proper power supply voltage level.
Operating the amplifier while the
LOW VOLT indicator is illuminated
or flashing could result in reduced
system performance, damage to
the amplifier or damage to the
connected speakers.
CLIPPING LED:
When illuminated or flashing indicates
the amplifier is being over-driven.
Operating the amplifier while the
CLIPPING indicator is illuminated or
flashing could result in reduced
system performance, damage to the
amplifier or damage to the connected
speakers
MIN-MAX:
Indicates the gain level.
DM SERIES REMOTE
DD AUDIO / CLASS D MONOBLOCK AMPLIFIER / 5
PRE-AMP PANEL
INPUT:
Used for connecting RCA preamp
signal cables from the source unit to
the amplifier.
OUTPUT:
RCA Pass-through for sending
signal to another amplifier’s RCA
preamp Input.
GAIN:
Matches the output voltage of the
source signal to the amplifier’s
input section.
SUBSONIC:
Controls the high pass cutoff point for
the speaker outputs. This helps to
eliminate extremely low frequencies
that can waste amplifier power and
cause damage to your subwoofers.
REMOTE:
This port is for connecting the remote
subwoofer control.
LPF:
Controls the low pass cutoff point for
the speaker outputs.
CONTROL AND CONNECTION FOR DM SERIES
AMPLIFIERS: DM500a/DM1000a
DD AUDIO / CLASS D MONOBLOCK AMPLIFIER / 6
POWER PANEL
GND:
Connect to a ground wire going
directly to the chassis of your vehicle.
Minimum cable size is 0 gauge.
REM:
Connect to a switched +12V cable.
+12V:
Connect to a fused positive cable
(+12V) from the battery. Minimum
power cable size is 0 gauge.
PWR LED:
Indicates the amplifier is grounded,
and receiving +12V and REM power.
PRO LED:
Indicates a general malfunction due to
SPEAKER SHORT, THERMAL,
OVERLOAD, HI/LOW VOLTAGE, DC
OFFSET.
SPEAKER OUTPUT TERMINALS:
Connect to the speaker's + and -
terminals. Minimum suggested
speaker cable size is 16–12gauge.
DM SERIES amplifiers are monoblock
but have two + and two - terminals for
easier connection of multiple speaker
cables. Minimum impedance is
1 Ohm.
CONTROL AND CONNECTION FOR DM SERIES
AMPLIFIERS: DM500a/DM1000a
PRE-AMP PANEL
INPUT:
Used for connecting RCA preamp
signal cables from the source unit to
the amplifier.
PWR LED:
Indicates the amplifier is grounded,
and receiving +12V and REM power.
PRO LED:
Indicates a general malfunction due
to SPEAKER SHORT, THERMAL,
OVERLOAD, HI/LOW VOLTAGE,
DC OFFSET.
GAIN:
Matches the output voltage of the
source signal to the amplifier’s
input section.
SUBSONIC:
Controls the high pass cutoff point for
the speaker outputs. This helps to
eliminate extremely low frequencies
that can waste amplifier power and
cause damage to your subwoofers.
REMOTE:
This port is for connecting the remote
subwoofer control.
LPF:
Controls the low pass cutoff point for
the speaker outputs.
MAIN/STRAP:
This switch enables the STRAP mode
function when connecting two or more
DM SERIES amplifiers. (See Page 9
for STRAP mode connection).
IN:
Used when Strapping two DM
SERIES amplifiers. Connects to the
OUT RCA terminal.
OUT:
Used when Strapping two DM
SERIES amplifiers. Connects to the
IN RCA terminal.
GND:
Connect to a ground wire going
directly to the chassis of your
vehicle. Minimum cable size is
0 gauge.
REM:
Connect to a switched +12V cable.
+12V:
Connect to a fused positive cable
(+12V) from the battery. Minimum
power cable size is 0 gauge.
SPEAKER OUTPUT TERMINALS:
Connect to the speaker's + and -
terminals. Minimum suggested
speaker cable size is 12–10 gauge.
DM SERIES amplifiers are monoblock
but have two + and two - terminals for
easier connection of multiple speaker
cables. Minimum impedance is 1 ohm.
DD AUDIO / CLASS D MONOBLOCK AMPLIFIER / 7
CONTROL AND CONNECTION FOR DM SERIES
AMPLIFIERS: DM1500/DM2500
POWER PANEL
INPUT:
Used for connecting RCA preamp
signal cables from the source unit to
the amplifier.
PWR LED:
Indicates the amplifier is grounded,
and receiving +12V and REM power.
PRO LED:
Indicates a general malfunction due
to SPEAKER SHORT, THERMAL,
OVERLOAD, HI/LOW VOLTAGE,
DC OFFSET.
GAIN:
Matches the output voltage of the
source signal to the amplifier’s
input section.
SUBSONIC:
Controls the high pass cutoff point for
the speaker outputs. This helps to
eliminate extremely low frequencies
that can waste amplifier power and
cause damage to your subwoofers.
REMOTE:
This port is for connecting the remote
subwoofer control.
LPF:
Controls the low pass cutoff point for
the speaker outputs.
MAIN/STRAP:
This switch enables the STRAP mode
function when connecting two or more
DM SERIES amplifiers. (See Page 9
for STRAP mode connection).
IN:
Used when Strapping two DM
SERIES amplifiers. Connects to the
OUT RCA terminal.
OUT:
Used when Strapping two DM
SERIES amplifiers. Connects to the
IN RCA terminal.
GND:
Connect to a ground wire going
directly to the chassis of your
vehicle. Minimum cable size is
0 gauge.
REM:
Connect to a switched +12V cable.
+12V:
Connect to a fused positive cable
(+12V) from the battery. Minimum
power cable size is 0 gauge.
SPEAKER OUTPUT TERMINALS:
Connect to the speaker's + and -
terminals. Minimum suggested
speaker cable size is 12–10 gauge.
DM SERIES amplifiers are monoblock
but have two + and two - terminals for
easier connection of multiple speaker
cables. Minimum impedance is 1 ohm.
DD AUDIO / CLASS D MONOBLOCK AMPLIFIER / 8
CONTROL AND CONNECTION FOR DM SERIES
AMPLIFIERS: DM1500/DM2500
STRAP MODE CONNECTION: DM1500/DM2500
STRAP Mode allows the connection of two pieces of the same DM SERIES
amplifier. In STRAP Mode one amp will be designated the MAIN amp and one
amp will be designated the STRAP amp. the MAIN amplifier’s pre-amp settings
will control the audio signal for both amplifiers. The outputs of both amps will
work as a single output section. The minimum speaker impedance in STRAP
Mode should be 2 Ohm. Please follow the instructions and diagram carefully for
the correct connection method.
1. Connect the MAIN amplifier to the head-unit and set its MAIN/STRAP switch to the
MAIN position.
2. Set the STRAP amplifier’s MAIN/STRAP switch to the STRAP position.
3. Connect the MAIN and STRAP amplifiers via the IN and OUT RCA jacks as shown in
the diagram.
4. Connect SPEAKER terminal ( + ) of MAIN amplifier to subwoofer ( + ) lead wire.
5. Connect SPEAKER terminal ( + ) on STRAP amplifier to subwoofer ( - ) lead wire.
6. Connect SPEAKER terminal ( - ) on MAIN amplifier to SPEAKER terminal ( - ) on
STRAP amplifier.
DD AUDIO / CLASS D MONOBLOCK AMPLIFIER / 9
Set MAIN amp’s mode
switch to MAIN
Set STRAP amp’s mode
to INPUT STRAP
MAIN Amp
STRAP Amp
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