RCF 8000 Series UP 8502 Power Amplifier (2 x 250 W) - Manuale (Pagina 11)

11
ENGLISH
b
oth channeLs
(
Left and Right
,
of a steReo audio signaL connected to the
input 2)
aRe mixed in
oRdeR to get a mono signaL
.
INPUT 1 balanced
signal connection INPUT 1 unbalanced
signal connection INPUT 2 balanced signal
connection INPUT 2 (unbalanced)
stereo signal connection
REMOTE VOLUME CONTROL
It is necessary to set the 'Master Vol' dip-switch w to OFF and insert a potentiometer
between the 'Rem Vol' and 'GND – GND' (ground) contacts.
Suggested potentiometer: 10 k Ω , inverse logarithmic curve.
IMPORTANT: If the ‘Master Vol’ dip-switch is set to OFF and one or more
remote control potentiometers are not foreseen, it is necessary to short-
circuit the respective contacts to ground (through a wire) to get the
maximum volume, otherwise the relevant channels are muted.
GND
+ -
GND
+
GND
+ -
Rem
Vol
GND
10 k Ω
Overload Status
Stand-By / ON
Amplifier Disable
GND
Amplifier overload indication through (for example) either a LED (A picture) or a
relay (B picture).
‘Open collector’ circuit.
Max. voltage: 40 V dc
Max. current: 50 mA
Command linked in parallel to the front panel POWER
1
switch.
When linked to the ground (GND) contact, the amplifier is remotely turned on.
When linked to the ground (GND) contact: the amplifier is disabled in order to
save energy or select zones.
Ground common contact (for the previous three)
‘OPEN COLLECTOR’
max. 40 V
max. 50 mA
Overload Status Overload Status
GND GND
A B
+ V dc - + V dc -
Audio input 1, ‘b’ terminal
Audio input 1, ‘a’ terminal
Audio input 1, ground
Contact for the volume remote control
When this contact is linked to ground (GND – GND), the INPUT 1 has priority (INPUT 2 is muted)
When this contact is linked to ground (GND – GND), the ‘IN – Test’ input has priority (both INPUT 1 and 2 are muted)
Common ground for PRIOR contacts
Test signal input. Link it to the ground (through a wire) when not used, as this input is always open.
Audio input 2, ground
Audio input 2, stereo signal right channel
Audio input 2, either ‘b’ terminal or stereo signal left channel
Audio input 2, ‘a’ terminal
GND GND L R
REMOTE VOLUME CONTROL
t
Removable screw terminals