Doc Q7.0
73
Feedback Send [SND] & Return [RTN]
5.10
The
Feedback Send
and
Feedback Return
blocks allow you to route signal from any point to any other point,
bending the rule that it must only flow from input to output. No connection will be visible between the two blocks,
but signal nonetheless flows from the output of the SEND to the input of the RETURN. Both blocks must
be used
for either to function. The primary function of the Send and Return blocks is to allow effects to be inserted inside
the feedback loop of a delay. The MIX of the delay in the loop is normally set to “100%,” since direct signal
recirculation results in instability.
Warning:
Use these blocks with caution, as you can easily program an unstable loop and cause internal
clipping and/or very high sound levels, which may damage your hearing or connected equipment. With
the RETURN block
MIX
at 100%, set its
LEVEL
control to
minus 80 dB
and bring it up slowly. If you start
to hear squealing or other signs of runaway feedback, return the
LEVEL
control to minimum and analyze your
routing for possible causes of instability. See
on p.
for creative application ideas.
The
Feedback Send
block has
SEND LEVEL
and
OUTPUT LEVEL
controls. The latter controls the amount of signal that
passes through the block. Each Axe-Fx II preset can use one
FB Send
and one
FB Return
block.
The
Feedback Return
block has
MIX,
LEVEL, BALANCE,
and
BYPASS MODE
parameters. See
on p.
for more on these.
