Dragster DAK Serie Manual De Instrucciones página 2

INTRODUCTION
Thank you for purchasing a Dragster power
amplifier of the DAK series.
Year by year the technology designing car audio
amplifiers has grown a lot and DAK Series is the
ultimate production of Dragster range after more
than 18 years from the DA and DB Series still used
from thousand of customers every day.
We consider top important to introduce the latest
technologies offering you the absolute best
sounding, combined with powerful outputs of
course at a reasonable price.
We strongly recommend that your Dragster power
amplifier be professionaly installed, this will ensure
that you will obtain the best possible performance
from your amplifier, improving reliability and
safety for you and your car.
Keep this manual for future reference.
WARNING: Use of this amplifier at extreme
high volumes for extended periods of time
may cause hearing loss and hearig damage.
High volume levels while driving will impair
your ability to hear necessary traffic sounds.
While driving always keep your sound
volume at reasonable levels.
FEATURES
POWER AND PROTECTION CIRCUITRY
DAK Series amplifers features our unique IC
controlled protection circuitry. This sofisticated
circuit constantly monitors the heat sink internal
temperature and various voltages, adjusting
the amp automatically and protecting it from
dangerous conditions. The 2 LEDs located on
the top of amplifier provide indication of the
amplifier status, the POWER LED will light when
the amplifier is receiving proper power, ground
and remote voltages and the IC monitoring
sequences indicated the amp is functional. In case
the amplifier encounters a diagnostic condition as
listed below, the second LED will light indicating a
DIAGNOSTIC condition. When a Diagnostic condition
is sensed the amplifier will then turn into a
self preservation mode and if the cause of the
diagnostic condition is not corrected will eventual
shut down. These are certain critical diagnostic
conditions which will turn the amplifier off
immediately:
Speaker Short Circuit Protection: should your
speakers short circuit due to voice coil burn out,
or should the amplifier sense an impedance
2
too low to handle, the Protection LED will light,
indicating a diagnostic condition. Turn off your
system, disconnect one speaker at a time and
try to determinate which speaker might be faulty.
Correct the condition and restart the amplifier. You
must reset the amplifier by turning it OFF and then
ON gain by the Remote power connection after
correcting a diagnostic condition. (Turn your radio
OFF and then ON again).
Input Overload Protection: the circuit will either
shutdown the amplifier completely, or make the
amplifier spurt on and off indicating that it is in
a diagnostic condition. Turn the system off and
reduce the gain on the amplifier or volume from
your head unit, this should result in a corrected
condition.
Thermal protection: when the amplifier reaches
and unsafe operating temperature of 80 degrees
Celsius the amplifier will turn off. Once the
amplifier cools down, simply reset the amplifier
by its remote connection (turn the amplifier off
and then on again once you have given the
amplificator a change to cool down) and the amp
will once gain begin.
If you live in a hot climate we suggest installing
additional cooling fans in your trunk to exhaust the
hot air which can be build up in the trunk. This will
help to to keep the ambient temperature in the
trunk as slow as possible so that your amps work
flawlessy and without any musical interruption.
DC Offset Protection: Should any DC voltage try
to enter the amplifier via the speaker terminals
it twill cause the amplifier to shut down and not
operate until this condition is remedied. This circuit
will also protect damaging high DC voltages from
reaching your speakers should your amplifier ever
malfuntion.
Clipping or total shutdown may also be result
of bad ground connection or loose ground. If you
find that your speakers or speaker wires are not
shorted, please check your ground
Reverse polarity.
To reset the amplifier, you must first diagnose what
caused the problem, correct the fault and restart
the system.
The DAK amplifiers feature an anti-thump, mute
and delay circuit. This eliminates irritating speaker
damaging turn-on and turn-off transients normally
experienced with expensive amplifiers.
MUTE CIRCUIT
Clipping or total shutdown may also be result of
bad ground connection or loose ground. If you
find that your speakers or speaker wires are not
shorted, please check your ground connection.
DC Offset Protection: Should any DC voltage try
to enter the amplifier via the speaker terminals
it twill cause the amplifier to shut down and not
operate until this condition is remedied. This circuit
will also protect damaging high DC voltages from
reaching your speakers should your amplifier ever
malfuntion.
BASS EQUALISATION CIRCUITRY
A shelving equalisation circuit is included in the
amplifiers. The equalisation system is preset at
45Hz. The boost control allows you to add up to
+12dB of Bass EQ effect. Utilize the Bass EQ to
tailor your bass response to your systems needs.
Please keep in mind that by adding Bass EQ
you are adding stress on your speakers. Make
sure your speakers can handle the extra power
output! It would be foolish to add 18dB of gain
to low excursion 8" and 10" subwoofers or mid
ranges and tweeters. It's a sure way to blow your
speakers. The Bass EQ was designed for High
Power subwoofers.
"ADR" – ACTIVE DYNAMIC REGULATION
Dragster DAK Series feature ADR, Active Dynamic
Regulated power supplies. 100% HexFET devices
are utilized in the power supply for high speed
(100KHz) switching frequencies. The power supplies
are capable of supplying the main amplifier with
a considerable amount of reserve voltage for
peak "high demand" situations. The ADR circuit
provides full band with power for authoritative
bass response, high current output into low
impedance loads and increased headroom. The
ADR is supplied with power via a high speed, high
temperature capacitance bank and 100% pure
copper rails of the PCB enabling fast transient
response to musical demands.
SUPER CLASS A/B AUDIO STAGE PERFORMANCE
The audio output section of the DAK Series
amplifiers features Japanese studio grade, high
current Bipolar audio transistors. Unlike other
manufacturers who use a host of different type
of transistors, not originally designed for audio
output, i.e.: power supply transistors, motor control
transistors to produce the audio signal (you can
only image what they sound like), Dragster use
only true audio transistors in the audio section of
these amplifiers. These transistors were designed
and engineered to produce music. That's why
Dragster amplifiers clearly sound better. They
are cleaner with lower distortion, higher current
capable and more reliable. We challenge you
to test listen a Dragster amplifier and hear the
difference yourself.