|
|
|
|
 D-TECH
is
a state of the art technology that gets more power out of an
amplifier with less wasted energy than was ever before possible,
and offering one of the cleanest, crispest sounds of any other
amplifiers on the market.
D-TECH is a power
amplifier design
that is highly advanced and
which delivers a tremendous amount of power
for its size. It generates very little heat, and provides a crystal-clear, tight sound.
We combine the advantages of analog and digital amplifiers without
compromising. It results in one of the most user-friendly amplifiers
available on the market. |
Our digital amplifiers
convert the analog input signals into digital signals before the
signal is amplifed. The signal is amplified
while it is in digital mode, which accounts for the amplifier’s
efficiency and power. Once the signal is
amplified, it converts back into an analog signal so it’s able to be
used. The amplifier has a clever arrangement of circuitry which
overcomes delays in the signal conversion process. This enables the
amplifier to compare the amplified signal back with the input, to
eliminate any differences and ensure the signal wave form comes out
exactly as it came in.
HIGHLY
ADVANCED POWER
SUPPLY
|
The
power supply of TAFN
power amplifiers is one of the most advanced ever
made. Specially designed full-bridge topology delivers high
power constantly without overheating, thanks to its extremely
efficient design. Not only comes with a soft-start feature, but also
has a soft turn-on feature at the mains input stage which eliminates
completely any
current surge when the amplifier is turned on. This allows users to turn on several amps at
once without the need to turn them on one by one. This power
supply is also one of the most reliable and resilient for
a power amplifier. |
 |
D-TECH
uses a special type of switch-mode power supply technology, which
ensures that in the event of fluctuations in mains power, the output
remains stable because of D-TECH’s fast-feedback system. As added
protection, the power amplifier can withstand any sudden cut, drop or
surge in mains power. The soft-start feature ensues that after power
returns to operating levels, sound increases gradually rather than all
at once, which safeguards the power amplifier and speakers.
HIGHLY ADVANCED AUDIO DIGITAL POWER MODULE
|
 |
Thanks to its extremely low output impedence,
D-TECH
has a very high damping factor, which gives it more control over the
cone movement of the speaker, and therefore a realistic, rock-solid bass
sound. Even when the power amplifier clips, the damping factor will
remain high, so that the sound coming out of the speakers is still as
solid.
In the event of overloading or a short circuit,
D-TECH’s automatic
current
control (ACC) device limits output current automatically. This makes
the amplifier very reliable, and extremely unlikely to sustain damage.
The ACC monitors the output current constantly, and if the current
exceeds its pre-set level, it will restrict the signal to keep the
current within those limits, regardless of how hard the short circuit or
extent of overloading.
|
The
D-TECH
power amplifier uses switch-mode technology, which generates minimal
heat. It also re-uses energy returned from the speaker rather than
dissipating it as heat or forcing the amp into premature current
limiting.
By generating
less heat, the D-TECH digital amplifier also dispenses with the need for
large heat sinks, making the amplifier smaller and lighter.
GRAPH:
Comparison of heat dissipation loss between different technologies
Class-AB
50% Power loss in heat |
Class-H 30% Power loss in heat |
|
Class-TD (AB+D) 10-15% Power
loss in heat |
D-TECH 3- 5% Power loss
in heat |
|
The
D-TECH
power amplifier loses only 5% of energy to heat, compared to up to 50%
for a conventional (Class AB) power amplifier. The
Class-H amplifier
loses about 30%, and Class-TD
(AB+D) loses 10-15%. |
With
less heat loss, D-TECH’s digital amplifiers need
nearly half the amount of power to run compared with conventional
Class-AB power amplifiers, which saves on electrical
installation costs and power bills. |
|
How does D-TECH do it? We combine the benefits of an advanced
digital power amplifier and a
specially designed digital switch-mode power
supply, to make the amplifier smaller, lighter, and more efficient. |
Thanks to
improvements in our technology, the new
D-TECH
i SERIES is even
more efficient, achieving 3% power loss in to heat, which means it is
97% power efficient, compared to the 95% from previous models.
|
FULL CYCLE
SPEAKER CONE CONTROL
Because
of the nature of this remarkable technology, our power amplifiers clamp
the speaker cone electrically at all times during the wave cycle giving
the best possible control of the speaker, so the sound is as realistic
as it can be. Because
D-TECH power amplifiers force the speaker cone to
pull back to neutral position by clamping the speaker cone electrically
at all times, sound remains clear and tight even if the speaker spider
is worn out. As
D-TECH power amplifiers rely less on the speaker spider, mechanical
errors caused by resonance and slow response time are kept to a minimum.
Result: Tight, clean and realistic bass and even mid-range. Although
this feature apply to all our power amplifiers, it has been enhanced in D-TECH i SERIES for even greater
sound.
the
secret of clean sound
|
One reason why all TAFN
D-TECH power amplifiers sound so clean
is because they have eliminated hidden intermodulation.
Harmonics outside the
audio band, which occur mainly between the
power amplifier’s output power
stage and the speaker load, are
the main cause of intermodulation inside the
audio band which then dirties the sound.
Intermodulation takes
place due to the low damping factor of the amp
at high frequencies, and the reactive behavior of the speaker,
especially outside the audio band.
D-TECH
amplifiers, thanks to its highly advanced output filter and
its signal process circuitry, cuts
out harmonics outside the
audio band sharply, with almost no phase shift,
thus eliminating intermodulation inside the audio band.
Intermodulation cannot
feed back into the audio band, as the harmonics are not
present any more to produce
it in the first place.
Most power amplifiers
fail to address the problem of intermodulation. Their
specifications say the power amplifiers have
little intermodulation
distortion. However, power amplifiers
are tested on resistor dummy loads, which are not reactive
like speakers. So
they do not show the true extent of the
problem.
Tested on
real speakers, however, the difference
becomes clear: The sound from
the
D-TECH
power amplifier is better because our
technology truly avoids intermodulation
when it cuts out harmful harmonics at source.
Although
D-TECH i SERIES
has special filter for cutting harmonics, this feature is common
to all TAFN power amps. |
 |
the MOST ADVANCED
protection system
D-TECH’s automatic
current control (ACC)
device limits output current automatically. This makes the
amplifier very reliable, and extremely unlikely to sustain damage.
The ACC monitors the output current
constantly, and if the current exceeds its pre-set level, it will
restrict the signal to keep the current within those limits,
regardless of how hard the short circuit or extent of overloading.
In the event of a short
circuit, the ACC limits the signal immediately, which protects the
amplifier from shock caused by a surge in current. With conventional
amplifiers, there is a short delay, while the amp takes
the energy
stored in the capacitors to tide it over.
That delay in adjustment can prove
fatal to the power transistors – but not with D-TECH, where the ACC
limits the signal instantly, ensuring the power transistors adjust
to the short circuit in time.
|
Soft turn-on feature and over-voltage
detector are available only in
I-power series, and d-tech i series. |
D-TECH power amplifiers are also
protected against high frequency oscillations caused by misusage or incorrect installation of the amplifier. Special automatic control gain (AGC)
will come in to effect to limit the signal to a safe levels.
As added protection, the power
amplifier can withstand any sudden cut, drop or surge in mains power.
The soft-start feature ensures that after power returns to operating
levels, sound increases gradually rather than all at once, which
safeguards the power amplifier and speakers.
|
|
