12
See page 14 in the technical appendix.
In
“LIFT” position the internal reference ground becomes insensitive to
low-frequency interference. High-frequency interference however is still
bled off to ground or case respectively.
Full electrical safety is granted all the time since the case is permanently
grounded via the 3-pin mains plug !!
Too loud ? Too soft ? The
PRE-GAIN
concept
The G100 is specially designed to drive headphones. However, these
can present loads between 8 ... 2000 ohms and efficiency factors
between 85 ... 115 dB/mW. This makes it a little bit difficult to fulfil all
desires, because ...
... owners of high-efficiency headphones may rarely turn the volume
control over the nine-o'clock position without risking hearing damage,
while even the max setting may be too soft for low-efficiency
headphones ...
... all users expect maximum quality at lowest noise and distortion ...
Therefore the circuitry must be able to adapt to these conditions, since
headphones won´t !
THAT'S WHAT WE CALL
PRE-GAIN
The adjustment is made in the preamp section, where the signal can be
boosted or attenuated in five 6-dB steps.
See page 14 in technical appendix.
In case you find that the G100 could well be somewhat softer - e.g. in
order to widen the setting range of the volume control - set the
corresponding jumper to the
–6dB or -12dB position.
If you find that your G100 could do with some more gain, set the
corresponding jumper to the +6dB or +12dB position.
The unit is factory-preset to the center position (0dB), which should be
suitable for the majority of applications.
Summary of Contents for G100 Final Edition
Page 1: ...1 PHONE AMP G100 Final Edition USER s MANUAL ...
Page 14: ...14 ...
