Alto HPA4 Manuale d'uso - Pagina 11

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Alto HPA4 Manuale d'uso
Background musical signals
M
ain nput
I
INPUT LEVEL(dBu)
18
12
6
0
6
12
18
CLIP
3
2
4
R
LTO
DIRECT IN
1
5
0
6
INPUT GAIN
MAIN SECTION
5.4 The HPA4 in Mono / Stereo Application
The HPA4 4-Channel Headphone Amplifier can be switched between the Mono and Stereo operational mode via
Mode Switch control. Press the Mode Switch for Mono application, the Mono LED (8) lights up. In Mono application,
the input two signals are combined together and the resulting mono signal routes to both the Left and Right Head-
phone Out Outputs.
Headphone Output 1
OUTPUT LEVEL(dBu)
OUTPUT LEVEL(dBu)
0
0
18
12
6
0
6
12
18
CLIP
18
12
MUTE
L
MUTE
R
MONO
MUTE
L
MUTE
15
15
15
15
3
TREBLE
BASS
2
4
AUX IN
HEADPHONE OUT
1
5
MAIN IN
AUX
0
6
MAIN IN
AUX
BALANCE
OUTPUT GAIN
BALANCE
CHANNEL 1
AUX In 1
OUTPUT LEVEL(dBu)
0
0
6
0
6
12
18
CLIP
18
12
6
0
6
12
R
MONO
MUTE
L
MUTE
R
15
15
15
15
3
TREBLE
BASS
2
4
AUX IN
HEADPHONE OUT
2
1
5
1
0
6
MAIN IN
AUX
0
OUTPUT GAIN
BALANCE
OUTPUT GAIN
CHANNEL 2
Vocal signal
10
OUTPUT LEVEL(dBu)
0
0
18
CLIP
18
12
6
0
6
12
18
CLIP
MONO
MUTE
L
MUTE
R
MONO
15
15
15
15
15
3
3
TREBLE
BASS
4
AUX IN
HEADPHONE OUT
2
4
5
1
5
6
MAIN IN
AUX
0
6
BALANCE
OUTPUT GAIN
CHANNEL 3
0
0
HPA4
15
15
15
4-Channel
TREBLE
BASS
AUX IN
HEADPHONE OUT
HEADPHONE
ON
AMPLIFIER
OFF
POWER
CHANNEL 4