Setup Front Panel Rear Panel
Stereo Operation
Parallel Mono Operation
Specifications
Operating Instructions
Mono Bridge Operation
U S E R I N S T R U C T I O N S
page 9
USING THE SIGNAL GROUND LIFT SWITCH
Depending on you system configuration, sometimes applying the ground will create a quieter signal path. Sometimes lifting the ground can eliminate ground loops and
hum to create a quiter signal path.
1. With the power amp on, listen to the system in idle mode (no signal present) with the ground applied
（
the SIGNAL GROUND LIFT SWITCH
（
5
）
in the left position
）
.
2. Then turn the power off before moving the SIGNAL GROUND LIFT SWITCH
（
5
）
. Lift the ground by moving the SIGNAL GROUND LIFT SWITCH to the right, turn
the power back on and listen to determine which position will provide a signal devoid of background noise and hum. Keep the SIGNAL GROUND LIFT SWITCH in the
ground position if the noise level remains the same in either position.
CAUTION
：
Do not terminate the ac ground on the power amplifier in any way. Termination of the ac ground can be hazardous.
!
A
p
Hz
Frequency Response. at2c
d
B
r
A
+2
+1.75
+1.5
+1.25
+1
+0.75
+0.5
+0.25
+0
_0.25
_0.5
_0.75
_1
_1.25
_1.5
_1.75
10
20
50
100
200
300
1k
2k
5k
10k
20k
30k
PS-3000/PS-4000/PS-5000
UNiKA
