Table of Contents
Advertisement
10. finitus Technologies Explained
10.1. ALD „active loaded differential amplifier"
The use of active loads in specific parts of the amplifier circuit has a similar effect as
cascoding. The bandwidth is increased and the amplifier circuit is decoupled from
disturbances in the supply voltage. In addition, the distortion is much lower than with
resistive loads. This technique is used not only in the differential part of the poambo
circuits.
10.2. NOD „non intrusive opto coupled detection"
The goal of any detection should be not to affect the measurand (in our case, the
audio signal). Using an optically coupled circuit is very close to this ideal. Neither
there is a galvanic coupling nor can repercussions still occur.
10.3. TDC „true difference clip detection"
Since the internal supply voltages change slightly with the load, in the poambo the
real difference between the audio signal and the supply voltage is measured for the
clip detection. This difference is captured and analyzed with a safety margin so that
the speakers are optimally protected in any load condition against overload
distortion.
10.4. FTA „fast temperature compensated auto-bias"
The bias voltage of an amplifier has to be controlled very precisely and should
comply with the optimum within a few thousandth of a volt. This optimum varies with
the temperature of the amplifier stages, which in turn is dependent on the ambient
temperature and the current load of the driver and output stages. All these
parameters are covered by the FTA and it guarantees the observance of the
optimum with the appropriate accuracy.
10.5. OIS "outside independent system"
Like all other finitus products, the poambo is designed to be a system that is
extremely independent of external components. Due to the circuits extremely high
rejection ratio, components like fuses, power cords etc. have no measurable and
audible effect on the output signals of the poambo.
14
Advertisement
Table of Contents
