Braun A1 - Specifications

Tape
monitoring
facility
The fact
that a different source
can be
heard
from that which is
being recorded
means
a
Fue tape
monitoring
facility
is
pos-
sible. lt
is
merely
necessary
to
set
the rotary
switch
"input
selector"
(16)
to
the
record-
ing
tape
deck. This implies
that the tape
deck in
question
does
have
a tape
monitor-
ing
facility.
Should this not
be the case, the
signal
can
still
be
checked by setting the
rotary
switches
(16)
and
(15)
to the same
source.
Level indicator
display
The level display
(14)
with
its
green
LEDs
marked
16
to
0 receives its
signal from the
pre-amplifier
output
(corresponding
to
the
"pre-out"
sockets
(27)).
The
sensitivity
of
the display
can be increased
up
to
10 fold
by depressing
the
"display
sens>
button
(10).
Then
a
visual
control
is
possible
at low
volume
levels. The top two
LEDs
"clip,'
of
the level
display
(14)
illuminate
red when
the
power
amplifier section is
overloaded.
Should
this
arise,
reduce the
volume.
Gleaning
Clean the controls
and front
panelwith
a
soft
brush.
Some
important
technical
points
Loudspeaker
compatibility
This
amplifier is
built for 8
ohm speakers.
Alltechnical
information
is
based
on
an
8
ohm impedance.
The
use of 4 ohm speakers
creates
no
problem,
but
particular
care
should
be
taken
that
good
air circulation is
possible.
Use
of two speaker
pairs
When
connecting
2 x
2 speakers,
they
should
be of the
same type
and
specifi-
cation
to
obtain
the
maximum from
the
amplifier.
Connection to
supplementary
units
The
projecting
connection
between
pre-
and
power
amplifier
(jumper
between
sockets
(27)
and
(28))
facilitates
the
use
of
a
supple-
mentary
appliance
such as an
equalizer.
The
clipping display
"cliP"
in the
display
(14)
is
controlled
by the
power
amplifier
and
retains
its
function
even
when
supplemen-
tary
appliances
are
used.
All
controls of the
41
amplifier are in the
pre-amplifier
section
so that the
signal for
supplementary
appliances
at
the
"pre-out"
sockets
(27)
may
be
adjusted.
Subject
to change
without notice.
Specifications
8
Ohm
4
Ohm
Rated
output
power
l kHz
55 W 65
W
Music
power
l kHz
80 W 105
W
Power
bandwidth
8 Ohm
10
Hz.
.
. 100 kHz
4Ohm 10H2...80kHz
The
amplifier is designed
for 8
Ohm
operation. All
specifications refer
to
this
load
impedance.
With sufficient
cooling
resp. reduced
output
power
continuous
operation with
two 4
Ohm speaker boxes
is
possible.
Loudspeaker
(2x4
connectors)
switchable
group
1,2,1+2
Power
supply
22OV,50/60
Hz
Prepared
for
internal
voltage
setting
to
110,
12O,240
V
50/60
Hz;
please
consult
your
authorized dealer.
Size(wxhxd)
Weight
445x
7Ox 375 mm
8,2 kg
Transient
I ntermodulation
(TP
100
kHz)
O,O2o/o
Frequency
response
Tuner,
tape, aux
Rated
THD
Intermodulation
Phono
Tuner,
tape, aux
Main
amplifier
0,05%
0,05%
-
1,5
dB
5Hz...90kHz
63 dB
RMS
57
dB
82
dB RMS
58 dB
95 dB
RMS
12
dB/oct.
12
dB/oct.
+0...60d8
+12d8
+11
dB
2mYl
47
kOhm
2mYl 47 kOhm
2OOmYl220 kOhm
2OOmYl220
kOhm
2OOmVl220
kOhm
2OOmYl220
kOhm
8OOmYl220
kOhm
8OOmY1220
Ohm
200 mV/6,8 kOhm
200
mV/6,8 kOhm
200
Ohm...2
kOhm
Phono
20 Hz . . .20 kHz
as
per
RIAA
+
1 dB
Signal/noise ratio
Inputs
shorted as
per
DIN
45500
referred
to 50
W
(RMS)
resp.
50
mW
(QRMS peak)
Input
overload margin
Tuner,
tape, aux
30 dB
Phono
38
dB
Subsonic
filter 30 Hz
High filter
7,5
kHz
Rotary
volume control
Balance
Bass
Treble
Inputs
Phono
1
Cinch
sockets
Phono
2
Cinch
sockets
Tuner
Cinch sockets
Tape
1
Cinch
sockets
Tape 2
Cinch
sockets
Aux
Cinch sockets
Main
amplifier
Cinch sockets
Outputs
Pre-amplifier
Cinch
sockets
Tape
1
Cinch
sockets
Tape
2
Cinch
sockets
Headphone
Socket