Ashdown Engineering 22-HEAD Guia Del Usuario página 5

22-HEAD
desk for either Direct Injection into the PA system or for recording. This
must ONLY be used into a Balanced Microphone input, it is not intended
for any other type of connection.
This has a floating ground that is referenced to the mixing console it is
plugged into and should not need ground lifting. It is also unaffected by
Phantom Powering on the Microphone input.
Make sure your XLR plug does not have the shell of the plug internally
connected to signal ground or this will connect the system to chassis
ground of the 22-HEAD and may cause problems with hum.
PUSH TO MUTE - When pushed IN this button mutes the output from
the preamp to the power amp, mutes the output from the D.I. Socket and
mutes the output from the LINE Out socket as well. This leaves the output
from the TUNER socket still available to allow muted tuning.
A blue LED is provided next to this switch to indicate when the amplifier
is muted. This function operates only from the front panel MUTE push
switch. i.e. pressing this button mutes all sound from the amplifier and
allows a tuner connected to the TUNER socket to operate for silent
tuning. Release the button and you are back in action again.
TUNER OUT - This output socket provides a line level signal that can be
used for a permanent connection to a tuner.
22-HEAD
USER GUIDE
The signal from this socket remains when all other outputs from the
amplifier are Muted allowing all sound from the amplifier to be silenced
while tuning is in progress.
LINE OUT -This output socket provides a line level/post Output Level
control signal for connection to an external power amplifier driving
additional speaker cabinets.
OUTPUT LEVEL - The OUTPUT control adjusts the overall level of the
amplifier. Adjust this for your preferred overall stage playing volume. On
the 22-HEAD we have implemented a second VU meter to register the
output level as a visual reference.
LINE INPUT - The rear panel has a Line Input socket for connection of
other signal sources into the system. This can be used for plugging a CD,
Tape or MP3 player into the amplifier for practising, rehearsing or for
connection of a second pre-amp into the system.
EFFECTS SEND / RETURN - A serial effects loop is provided at a level of
0dB. The EFFECTS SEND socket can also be used as a Line Out socket
if required as the signal path through the preamp is only broken when a
jack plug is inserted into the EFFECTS RETURN socket.
The EFFECTS SEND is situated after the EQ, the Valve section the
Compression and the Sub Bass Processor.
USER GUIDE