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User's manual<br />
System Amplifier K&F TOPAS<br />
5.5.3 Input Signal Processing<br />
CH 1<br />
DSP<br />
A<br />
Output 1<br />
1+<br />
V<br />
1-<br />
CH 2<br />
A<br />
Output 2<br />
1+<br />
PRIO<br />
V<br />
1-<br />
Sensitivity<br />
Gain,<br />
filter,<br />
routing<br />
Poweramp<br />
5.5.3.1 Input Sensitivity<br />
The analogue inputs have a switchable gain to make optimal adjustments to the signal source<br />
level. This also changes the overall gain that is specified in the web interface. You can adjust<br />
the gain in the web interface in the menu item. (see page 31)<br />
To minimise the total noise level of the system, you should always use the lowest possible<br />
value at which no distortion occurs.<br />
The function 'Auto Attenuation' enables an automatic gain switching when an overload<br />
occurs.<br />
5.5.3.2 Routing<br />
You can assign any input channel (Input 1, Input 2) or the sum signal (Mono Mix) to each<br />
amplifier channel. To avoid clipping, the sum signal is attenuated by 6dB.<br />
5.5.3.3 Gain Control<br />
The gain of a channel can be set by three input ways: By entering values in 'Group Gain' and<br />
'Gain' and with the horizontal slider. (see page 31)<br />
• input sensitivity: Global for both channels (see page 24)<br />
• Gain setting of the channel: Gain in this DSP channel. The gain is individually<br />
adjustable.<br />
• Only valid for the remote software, available at a later date: Gain of the group:<br />
gain factor in this DSP channel, adjustable when assigning to a group. This value is<br />
assigned when operating via GPI, remote software or XML for gain control of a group<br />
of channels.<br />
5.5.3.4 Front Panel Gain Control<br />
You can adjust the volume of both channels with the two gain controls behind the left front<br />
panel.<br />
KLING & FREITAG GMBH © 2012 Revision 3.0 Page 24 of 65