Specifications - Braun A1 Gebrauchsanweisung

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-
i n g t a p e d e c k . T h i s i m p l i e s t h a t t h e t a p e
deck in question does have a tape monitor-
i n g f a c i l i t y . S h o u l d t h i s n o t b e t h e c a s e , t h e
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
t h e d i s p l a y c a n b e i n c r e a s e d u p t o 1 0 f o l d
by depressing the "display sens> button
(10). Then a visual control is possible at low
volume levels. The top two LEDs "clip,' of
t h e l e v e l d i s p l a y ( 1 4 ) i l l u m i n a t e r e d w h e n t h e
power amplifier section is overloaded.
S h o u l d t h i s a r i s e , r e d u c e t h e v o l u m e .
Gleaning
C l e a n t h e c o n t r o l s a n d f r o n t p a n e l w i t h a
soft brush.
Some important technical
points
Loudspeaker compatibility
T h i s a m p l i f i e r i s b u i l t f o r 8 o h m s p e a k e r s .
A l l t e c h n i c a l i n f o r m a t i o n i s b a s e d o n a n 8
ohm impedance. The use of 4 ohm speakers
creates no problem, but particular care
s h o u l d b e t a k e n t h a t g o o d a i r c i r c u l a t i o n i s
p o s s i b l e .
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.
T h e c l i p p i n g d i s p l a y " c l i P " i n t h e d i s p l a y ( 1 4 )
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 O h m 4 O h m
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
4 O h m 1 0 H 2 . . . 8 0 k H z
T h e a m p l i f i e r i s d e s i g n e d f o r 8 O h m
operation. All specifications refer to this
load impedance. With sufficient cooling
resp. reduced output power continuous
operation with two 4 Ohm speaker boxes
i s p o s s i b l e .
Loudspeaker (2x4 connectors) switchable
g r o u p 1 , 2 , 1 + 2
Power supply
2 2 O V , 5 0 / 6 0 H z
Prepared for internal voltage setting to 110,
12O,240 V 50/60 Hz; please consult your
authorized dealer.
S i z e ( w x h x d )
Weight
445x 7Ox 375 mm
8,2 kg
Transient I ntermodulation
(TP 100 kHz)
O,O2o/o
Frequency response
Tuner, tape, aux
Rated THD
I n t e r m o d u l a t i o n
Ph o no
Tuner, tape, aux
Ma in a mp li fi e r
0, 05 %
0,05%
- 1 , 5 d B
5 H z . . . 9 0 k H z
63 dB RMS
5 7 d B
8 2 d B R M S
58 dB
9 5 d B R M S
1 2 d B / o c t .
1 2 d B / o c t .
+ 0 . . . 6 0 d 8
+ 1 2 d 8
+ 1 1 d B
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
2 0 0 O h m . . . 2 k O h m
P h o n o 2 0 H z . . . 2 0 k H z
as per RIAA + 1 dB
S i g n a l / n o i s e r a t i o
Inputs shorted as per DIN 45500 referred
to 50 W (RMS) resp. 50 mW (QRMS peak)
Input overload margin
Tuner, tape, aux
30 dB
Ph o no 38 dB
S u b s o n i c f i l t e r 3 0 H z
High filter 7,5 kHz
Rotary volume control
B a l a n c e
Bass
Treble
I n p u t s
P h o n o 1
Cinch sockets
P h o n o 2
Cinch sockets
Tuner
Cinch sockets
Tape 1
Cinch sockets
Tape 2
Cinch sockets
A u x
Cinch sockets
Main amplifier
Cinch sockets
O u t p u t s
Pre-amplifier
Cinch sockets
Tape 1
Cinch sockets
Tape 2
Cinch sockets
H e a d p h o n e
Socket