182
Doc Q7.0
Using Send and Return
16.14
The
Feedback
Send
and
Feedback
Return
blocks (p.
) have two main uses: creating feedback loops and extending
the length of effects chains beyond the size of the grid.
Creating Feedback Loops
16.14.1
Feedback loops allow you to combine effects in interesting ways and then route the output back to the input. The
figure below demonstrates this by using an exaggerated overlay of a preset illustration rendered in Axe-Edit.
The “Main” signal enters the grid at (1), passes through the AMP and CAB, and reaches the output (2), where it is
heard at the speakers. Meanwhile, a tap of this main line at (3) carries signal to a Flanger and a Delay, set to
500 ms, no feedback, 100% wet. Nothing comes out of the Delay for 500 ms. Then, the first flanged echo emerges
in the mix with the main line at (4), where it is heard at (2). This echo simultaneously enters the Send block (5) and
is routed to the Return (6). From here it again passes through the Flanger—where the effect “stacks” on the last
pass through—and hits the delay again. This loop of Return
Flanger
Delay
Send
Return
would continue
forever if the FB Return block didn’t make it a bit quieter each time so that it gradually fades away. Each time the
loop exits the Delay, we get to listen in on the current state of things as it is routed through (4) to the output (2).
So to review, the send “transports” signal to the return, where
LEVEL
controls the amount of feedback.
At left, the significant columns of this preset are shown as they
would appear on the display of the Axe-Fx II. Notice that on the
Axe-Fx II the connector from SEND to RETURN is
not visible
!
Countless variations of Send/Return loop presets are possible
when you use different effects, vary their order, or enter and tap
the loop in different places.
