Diamond Guitar Pedals Quantum Leap User Manual page 8

Delay, keeping transient definition in tact. Also, as opposed to Tap Delay whose
repeats always eventually fade to zero even at max REGEN, Pitch Ramp Delay
will achieve 'Controlled Feedback Mode' at maximum REGEN, basically
repeating many times without oscillating. Pitch Ramp Delay uses the TAP/FX
footswitch for a special function (which we'll get to next), so delay time is set
only via the SPEED knob. If you don't need tap and don't touch the TAP/FX
switch, you basically have a nice clean delay mode available that's similar to the
tonality of the Memory Lane Jr's 4th mode (the QL does have slightly darker
analog filtering and a slightly different voiced modulation relative to the MLJr).
On to the Pitch ramping function... in this mode, the TAP/FX switch allows you to
ramp the delay time by holding it down...then return it to the original delay time
by letting the switch go, then holding the TAP/FX switch down again. Let's dive
in with a little more detail - once you get the hang of its operation, it's very
straightforward and stage friendly.
First, the initial direction of the pitch ramping (up or down) depends on which
side of 'noon' the SPEED dial is set. If you're on the PM side, pitch ramping first
goes up (to a shorter delay time), and if you're on the AM side, pitch ramping first
goes down (to a longer delay time). If you keep holding the switch down it will
ramp to one octave difference (1/2 or double delay time), then hold at that delay
time. If you let go of the TAP/FX switch at any point on that initial ramp (or after
it has reached the octave point), it will hold at that delay time. Pressing down the
TAP/FX switch again begins the return to the original delay time on the SPEED
knob which it will continue as long as you hold the switch until it reaches the
original delay time - but letting go of the TAP/FX switch early will drop you
immediately to the original delay time (so a quick jab of the TAP/FX switch after
you've reached your desired ramp delay time will bring you immediately back to
the original delay time). Take some time to play around with this - bring the
REGEN up fairly high so the pitch changes strongly affect the built up delays, and
with a little practice you can time the footswitch holds to change the delay time to
almost any desired semitone within the octave range.
The ON/OFF LED is used to provide visual feedback of where you are in the
ramping process. If you're in the process of ramping from 'ground zero', or are
holding at a new delay time after releasing the TAP/FX footswitch after the initial
ramp, the LED will be red, and if you're returning to, or already at the 'ground
zero' delay time, the LED will be green.
With the feedback (REGEN) up, you can achieve some very interesting effects,
from 'turntable'-like speed change 'bumps' to almost 'whammy' like dives by
setting the initial SPEED before noon with a distortion pedal out in front of the
QL.
Quantum Leap user manual v1.01 8