gml gml8200 Manual De Usuario
Integral to the superb quality of all GML products is the external power supply. No
piece of electronic equipment can operate as designed without an adequate power
supply; however, most contemporary spectral processing devices do not feature a
supply which can provide clean, quiet power without unduly heating the device. The
GML 8355 excels in this respect, providing clean, quiet power for the many complex
and sensitive circuits of the GML 8200, while remaining cool and efficient. Internal
supply topologies are generally limited by board real-estate and thermal considerations
and thus are almost always exclusively of one or another of the switching topologies,
which results in more mains-induced noise and less ability to react to highly transient
signal content or extreme circuit actions. The internal power distribution scheme
employed by the GML 8200 is also responsible--in concert with the external supply
itself--for preserving the highest audio quality throughout the many circuits of the
Parametric Equalizer.
piece of electronic equipment can operate as designed without an adequate power
supply; however, most contemporary spectral processing devices do not feature a
supply which can provide clean, quiet power without unduly heating the device. The
GML 8355 excels in this respect, providing clean, quiet power for the many complex
and sensitive circuits of the GML 8200, while remaining cool and efficient. Internal
supply topologies are generally limited by board real-estate and thermal considerations
and thus are almost always exclusively of one or another of the switching topologies,
which results in more mains-induced noise and less ability to react to highly transient
signal content or extreme circuit actions. The internal power distribution scheme
employed by the GML 8200 is also responsible--in concert with the external supply
itself--for preserving the highest audio quality throughout the many circuits of the
Parametric Equalizer.
It is important to keep in mind that the noise performance of the Model 8200 varies with
operational settings, with an increase in noise to be expected when switching from the
'EQ Out' state to the 'EQ In' state. The reason for this characteristic is inherent to our
proprietary design, which places the control before all of the processing bands. This
gives our parametric equalizers two distinct advantages: first, potentiometer noise is
attenuated; second, the likelihood of internal overload is extremely remote, if not
impossible, even with 15 dB of gain available in each band. Interestingly, the most
dangerous condition for internal overload is experienced when using just a bit of EQ
with very high-level input signals. The big difference comes not only in our design
topology, but also in our component choices. In fact, our topology is not really feasible
with IC op-amps--they're always noisier than discretes--and only works with our quiet,
transparent discrete op-amps, which can cleanly handle output signals up to +26.8 dBu.
One should expect the noise floor to increase proportionally with gain, frequency, and
"Q", in accordance with the laws of physics. For further information about the noise
characteristic of the Model 8200, examine the Specifications page of this manual and
the Noise plot located in Appendix A.
operational settings, with an increase in noise to be expected when switching from the
'EQ Out' state to the 'EQ In' state. The reason for this characteristic is inherent to our
proprietary design, which places the control before all of the processing bands. This
gives our parametric equalizers two distinct advantages: first, potentiometer noise is
attenuated; second, the likelihood of internal overload is extremely remote, if not
impossible, even with 15 dB of gain available in each band. Interestingly, the most
dangerous condition for internal overload is experienced when using just a bit of EQ
with very high-level input signals. The big difference comes not only in our design
topology, but also in our component choices. In fact, our topology is not really feasible
with IC op-amps--they're always noisier than discretes--and only works with our quiet,
transparent discrete op-amps, which can cleanly handle output signals up to +26.8 dBu.
One should expect the noise floor to increase proportionally with gain, frequency, and
"Q", in accordance with the laws of physics. For further information about the noise
characteristic of the Model 8200, examine the Specifications page of this manual and
the Noise plot located in Appendix A.
POWER SUPPLY
A NOTE REGARDING NOISE