Loading...
QUAD AMPLIFIER
4QD-4240/4480/4960, QX-4960
Front Panel
Front Panel
1. PROTECTION INDICATOR
This LED indicates the state of the amplifier’s protection circuitry. When the Protection LED is on (illuminated),
the protection circuitry is active, indicating that the unit is not operating normally. This is typically due to
overheating or power limiting. Please check the Input and Output condition of the amplifier.
2. CLIP INDICATORS
These LEDs light when the channel’s level reaches approximately 0.5%, indicating excessive input levels.
When the Clip Indicators glow steadily, reduce the input to the amplifier.
3. SIGNAL INDICATORS
These LEDs light when the channel’s level exceeds approximately 2Vrms, indicating the presence of audio
signal input to the amplifier channel.
4. INPUT ATTENUATORS
These are 21-step detented input signal attenuators, used to increase or decrease the input level to the
amplifier.
5. HANDLES
Heavy-duty handles are provided to easily carry or position the amplifier.
6. POWER SWITCH
This switch switches the unit on, as indicated by the Power LED directly above the switch.
POWER
SIG PROT
CLIP SIG PROT
CLIP
SIG
CLIP
SIG
CLIP PROT
PROT
QUAD AMPLIFIER
QD4480
19
17
22
13
10
01
2
29
54
15
11
12 987
5
4
3
6
19
17
22
13
10
01
2
29
54
15
11
12 987
5
4
3
6
19
17
22
13
10
01
2
29
54
15
11
12 987
5
4
3
6
19
17
22
13
10
01
2
29
54
15
11
12 987
5
4
3
6
123 4
5 6
Loading...
Terms of Use | Privacy Policy | DMCA Policy
2006-2020 Rsmanuals.com