Control Elements; Front Panel; Power Switch; Clip Led - Alto A400.4 Dragonfly Owner's Manual

Front Panel:

1 Power On LED
This green LED will light up when you switch the A400.4 ON.

2 Power Switch

To switch the A400.4 ON and OFF.
3 Level Control for Channels 1 , 2 , 3 & 4
Adjust the output signal level of the respective channel.

4 Clip LED

It will flash when you are reaching the maximum power output of the amplifier.
It should flash only occasionally for optimum operation.
5 Limit LED
This LED will flash when the internal limiter is operating.
The limiter will prevent distortion and will protect the life of high frequency
transducers.
6 Signal LED
When a signal is applied to the input of your A400.4, this LED will light up.
A400.4
POWER ON
1
4

3. CONTROL ELEMENTS

R
LTO
DRAGONFLY
20 20
18 18 22 22
16 16 24 24 CLIP CLIP
ON
12 12 26 26 12 12
LIMIT LIMIT
6 6 28 28
- -
30 30
CH1 CH1 dB dB CH2
SIG SIG
20 20
18 18 22 22
16 16 24 24 CLIP CLIP
26 26
12 12 12 12
OFF
LIMIT LIMIT
6 6 28 28
- -
POWER
30 30
CH3 dB dB CH4 CH1
SIG SIG
2
20 20
18 18 22 22
16 16 24 24 CLIP CLIP
26 26
LIMIT LIMIT
6 6 28 28
- -
30 30
dB dB
SIG SIG
20 20
18 18 22 22
16 16 24 24 CLIP CLIP
26 26
LIMIT LIMIT
6 6 28 28
- -
30 30
dB dB
SIG SIG
20 20
18 18 22 22 18 18
16 16 24 24 CLIP CLIP 16 16
12 12 26 26 12 12
LIMIT LIMIT
6 6 28 28 6 6
- - - -
30 30
CH3 CH1 dB dB CH1 CH4
SIG SIG
4
20 20
22 22
24 24 CLIP CLIP
5
26 26
LIMIT LIMIT
28 28
6
30 30
dB dB
SIG SIG
3