T+A A 1560, User Manual

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23

 

    /    
(Output switch)
These press-buttons switch the loudspeaker outputs     A
and

 

B on and off.
The red LED above the     or     button glows
when the associated speaker output is switched on.
   
   
For special applications the PROTECTION circuit can be
adjusted to a less sensitive setting- although this does
mean that the loudspeakers are not so comprehensively
protected.
You can alternate between 'NORMAL' and 'SLOW'
sensitivity by pressing the

 

button.
The LED above the     button glows when sensitivity
has been set to 'SLOW' .
Note:
The LEDs above the buttons     and     also
act as PROTECTION indicators:
The PROTECTION circuit provides outstanding
protection against virtually any form of overloading or
harmful event. It does this by comparing the input signal
of the amplifier with its output signal, and switching it off
immediately if any discrepancy is detected.
This very effectively protects the loudspeakers connected
to the amplifier from damage due to clipping or other
signal-distorting errors.
Protective circuits are also provided to guard against
short circuit and overheating.
If normal operation is disturbed the output signal is
switched off automatically and the LED's over the
   
and

 

buttons flash alternately.
If this should happen you should immediately reduce the
volume setting of the amplifier. After about 20 seconds
the amplifier will switch on again, and the LED's will
cease to flash.
If the amplifier does not switch itself on again after this
period, there could be a short-circuit in the loudspeaker
cables, or the amplifier could have become excessively
hot. In this case it should be left switched off for some
time to cool down thoroughly.

 

PHONES
(headphone socket)
Socket for stereo headphones, minimum impedance 50
S
.
Note:
Continuous listening to very loud programme material via
earphones or headphones can result in permanent
hearing loss. You can prevent harm to your own health
by avoiding long periods of listening at high levels when
using headphones or earphones.

 


 

If you press this button the CINCH or XLR sockets are
selected as the stereo input sokets, and the amplifier is
switched to stereo operation (
see note A ).
The LED above the     button glows when the
amplifier is in stereo mode.
   

 

If you press this button the CINCH socket L/MONO is
selected as mono input socket, and the amplifier is
switched to mono operation (
see note A ).
The LED above the     button glows when the
amplifier is in mono mode, with the phono socket
selected.

 

   
If you press this button the XLR socket L/MONO is
selected as the mono input socket, and the amplifier is
switched to mono operation (
see note A ).
The LED above the 
 
 button glows when the
amplifier is in mono mode, with the XLR socket selected.
Note A:
At any one time you can only select one mode of
operation:
STEREO , MONO CINCH or MONO XLR .
To suppress unwanted noises when you change mode,
the amplifier switches off the loudspeaker outputs for
about two seconds during the transfer phase. During this
period you cannot switch to a different operational mode.