ASR Audio Systems Friedrich Schaefer, D- 35 745 Herborn +49 (27 72) 42 905
4.0
Operating the ASR Basis Exclusive
4.1
General Operation
The knob on the front plate of the ASR Basis Exclusive has the following functions :
a)
position
„Off“
: the unit is turned off.
b)
position
„Line“
(
„Line A“
and
„Line B“)
if your unit is equipped with two inputs) :
the main unit is turned
ON
and is supplied with current out of the charging transformer.
To protect all the internal high-grade components the voltage is lowered in this position.
c)
position
„Auto“
(
„Auto A“
and
„Auto B“)
if your unit is equipped with two inputs) :
the main unit is turned
ON
and is supplied with current out of the charging transformer.
when a output signal higher than 100 mV is detected the Basis is switched
Batt
mode.
After about
3 minutes
without signal
the unit switches to
Line
mode again.
d)
position
„Batt“
(
„Batt A“
and
„Batt B“)
if your unit is equipped with two inputs):
the unit is turned On and supplied with current out of the external battery power supply.
The charging transformer is separated from the AC outlet.
We
recommend
that you normally should use the unit in
Auto mode
.
Use the other modes are only when you want to operate the unit definitely in Line or Batt mode.
It may happen that when the records start very low the voltage is too low to switch to Batt mode.
In this case you may just wait till the signals gets louder. Or you may adjust the gain higher.
U
IMPORTANT:
U
before
switching
from one position to another on the ASR Basis Exclusive
turn down
the volume control on your pre- or integrated amplifier or simply switch to another
input, which is not used at the moment.
This will keep your speakers from getting damaged by probably occurring switching noise.
4.2
Monitor Leds
The operation mode is monitored in the Main unit by some Leds around the switch ON knob:
Line
Operation with a
yellow
led, in
Batt
operation an additionally
blue
Led comes ON,
input A
is shown with a
green
led,
input B
is shown with a
red
led.
In the
battery
power supply unit during
“Batt”
operation a
blue
led Bar is showing
“Batt ON”
.
In all other positions the display is showing a
yellow
bar with
“Charge”
.
Additionally the operation voltage is shown with 4 yellow and 4 blue Leds in front of the main unit:
The 4
yellow
leds are shining in „
Line”
mode, the
blue
ones light up
additionally
in „
Batt”
mode.
There is 1 led for the positive and 1 led for the negative voltage of the both colours at each channel.
While operating the ASR Basis Exclusive, the
voltage
is constantly
monitored
. When the batteries
are completely
discharged
, the ASR Basis Exclusive
switches
automatically into charging mode
and
supplies
the main unit out of the
transformer
so that you can continue listening music.
For best sonic results the ASR Basis should not be switched into Off Position.
Also when not in use please switch it in Line or Auto Position to keep the circuits warm.
High End Phono-Pre-Amplifier ASR Basis Exclusive version 2010 Page 12
