Settings
9
9 : 1.Amplifier settings: Output attenuation
The output attenuation screen sets the amplifier’s out-
put attenuation level.
The user can choose whether to set output attenuation
for channel 1, channel 2 or both by cycling through the right
most button. The “+” and “-” buttons change the value of
the output attenuation in the range from 0 to -30 dB. A
single “+” or “-” button press will increase or decrease the
output attenuation by 1 dB.
Note: for ideal sonic performance, select a 0 dB output
attenuation (meaning no attenuation), and select the proper
gain/sensitivity level as explained in the next paragraph.
9 : 2.Amplifier settings: Input Gain/Sensitivity
All K Series amplifiers allow selection of input sensitivity
to allow correct sensitivity matching with other third party
equipment.
The user can choose whether to set the input gain/sen-
sitivity for channel 1, channel 2 or both by cycling through
the right most button. The “+” and “-” buttons change the
value of the input gain and corresponding sensitivity. The
allowed gain values are 26 dB, 29 dB, 32 dB and 35 dB.
TABLE 3
shows the input sensitivity values for the K
Series amplifiers. These are the maximum RMS voltage
values of a 1 kHz sine wave input before clipping occurs at
the output stage. These values are reported with respect to
the amplifier’s gain.
Gain
K2
K3
K6
K8
K10
K20
26 dB
4.48 V
5.30 V
5.11 V
5.50 V
6.34 V
7.37 V
29 dB
3.17 V
3.75 V
3.62 V
3.90 V
4.49 V
5.22 V
32 dB
2.47 V
2.66 V
2.56 V
2.75 V
3.18 V
3.68 V
35 dB
1.59 V
1.88 V
1.81 V
1.95 V
2.25 V
2.62 V
TABLE 3: Input sensitivity (in RMS volt) @ 1 kHz vs gain.
K2
K3
K6
K8
K10
K20
40/140 V 40/165 V 40/153 V 40/169 V 40/200 V 40/225 V
TABLE 5: Maximum output voltage (V
peak
).
Gain
dBV
dBu
V
rms
26 dB
25.0
27
18
29 dB
21.6
24
12
32 dB
19.0
21
9
35 dB
15.6
18
6
TABLE 4: Maximum balanced input signal vs gain.
The maximum balanced input signal before saturation
of the input stage of the amplifier occurs with respect to the
amplifier’s gain is presented in
TABLE 4
.
9 : 3.Amplifier settings: Input select
K Series amplifiers allow the user to choose three dif-
ferent input modes (if available): Analog, AES3
1
and/or
KAESOP
2
.
Each of these inputs can either be processed by the
internal DSP (if installed) or not. The up and down buttons
on the “Input select” screen toggle between the available
input sources. The “sel” button locks the selected option.
The available signal routing path configurations are:
f
f
Analog
Out
Analog input and direct output
f
f
Analog
DSP
Out
1
Analog input routed to the internal DSP
f
f
AES3
Out
AES3 input, direct output
f
f
AES3
DSP
Out
1
AES3 input routed to the internal DSP
f
f
KAESOP
Out
2
KAESOP input, direct output
f
f
KAESOP
DSP
Out
1 2
KAESOP input routed to the internal DSP
1
Available only with optional KDSP board
2
Available only with optional KAESOP board
9 : 4.Amplifier settings: Max output voltage
The max output peak voltage of K Series amplifiers can
be set by the user.
It is possible to set output peak voltage levels for chan-
nel 1, channel 2 or both by pressing the “C1+2” button. The
“+” and “-” buttons change the value of the max output peak
voltage. Available voltage ranges for each model are shown
in
TABLE 5
.
Output attenuation
back
C1+2
-
+
-13
-13
dB
FIGURE 22: Output attenuation.
Settings | 15
