d-tech series technology
is a type of digital switch-mode power amplification design that is
highly advanced and delivers a tremendous amount of power and very
clear sound in a very small size. The D-TECH
power amplifier can deliver several times more
power than other amplifiers
of the same size and weight. It also sounds
better, and is more reliable.
digital power amplifier maintains output
voltage at stable levels, even when up to three speakers are added per
control feature sets it apart from conventional amplifiers, which start
reducing output voltage well before overloading point has been reached.
Providing high damping factor even when clipping.
How D-TECH output voltage drops with increasing
speaker load compared with others
The graph on
the right shows that maximal output voltage remains at a constant
level until a pre-set point is reached, regardless of how great
is the load. Compare that to conventional
amplifiers, which start decreasing maximal output voltage straight away,
as soon as any load is connected. Using the
D-TECH digital power amplifier, you can even
add three speakers to each channel without noticing any reduction in
sound quality. The amplifier will increase power accordingly, but with
no reduction in output voltage.
After a pre-set overloading
point is reached, D-TECH’s automatic control mechanism (AGC) comes into
effect, to limit output current automatically. This provides absolute
protection in the event of a short circuit, which conventional power
amplifiers cannot match.
Graphic: How D-TECH maintains power output level even when input voltage
Voltage input supply drops
depending on demand and distance from the power source. This can be
important if a power amplifier is a long way from the power source.
The graph shows how D-TECH’s power amplifier
maintains power at consistent levels which other
products fail to achieve. D-TECH
can take electrical power fluctuations of 170-260 volts without any loss
in power output levels,
maintaining high dynamic range.
series built-in protection features
D-TECH’s automatic gain
control (AGC) device limits output current automatically. This makes
the amplifier very reliable, and extremely unlikely to sustain damage.
The AGC 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 AGC 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 amplifier takes energy
stored in capacitors to tide it over. That delay in adjustment can prove
fatal to the power transistors – but not with D-TECH, where the AGC
limits the signal instantly, ensuring the power transistors adjust to
the short circuit in time.
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.