expression pedal will control that parameter. For example, if the RATE LED is lit,
the expression pedal controls the modulation rate, from slowest (expression
pedal = toe up), to the RATE knob’s current setting (expression pedal = toe
down). When no EXP. MODE LEDs are illuminated the expression pedal is
disabled while it remains plugged into the DMM550. The setting for the EXP.
MODE is saved and recalled when power cycling.
TAP Footswitch – The TAP FSW is used to tap in the delay time. Stomp on the
TAP FSW two times and the delay time will jump to the time between taps (if all
the TAP DIVIDE LEDs are off). If you tap more than twice, it will average the tap
tempo for all taps, it will stop averaging if there is more than 2 seconds between
two consecutive taps. The DMM550 will always take into account the TAP DIVIDE
setting when determining the delay time from the tap tempo. For example, if
your tap time is 1 second and TAP DIVIDE is set to eighth notes, the actual delay
time will be 0.5 seconds. The maximum delay time, when tapped in, is 1.5
seconds; though at this delay time the effect will sound quite lo-fi. The
DMM550 will save and recall the tap tempo when power cycling. In addition, if
an expression pedal is controlling the delay time, the Tap Tempo and TAP
DIVIDE setting will determine the maximum delay time of the expression pedal.
N.B.: The delay time for the DMM550 is always set by the last method used. If
you tap in a delay time, the DELAY knob’s setting is ignored. After tapping in a
delay time, if you turn the delay knob, the tap time will be forgotten and
replaced by the current position of the DELAY knob.
TAP FSW HOLD TO PRESET FEEDBACK –If you press and hold the TAP
FSW, the DMM550 will slowly ramp up to a high FEEDBACK setting. After
releasing the held TAP FSW, the feedback amount ramps back down to the
current FEEDBACK knob setting. The high feedback setting that the DMM550
ramps up to is set at the factory but may be adjusted when you are holding
down the TAP FSW, if held for more than 1 second. If you do not like the setting
chosen at the factory, simply turn the FEEDBACK knob to your preferred setting,
while the TAP FSW is held down. It may take a few tries before nailing the
perfect setting. Release the TAP FSW to save the feedback hold setting. The
DMM550 will remember the TAP FSW HOLD setting after power cycling.
If you want to restore the original factory setting for the FEEDBACK HOLD, press
and hold the EXP. MODE button while applying power to the DMM550. When you
see all 5 expression mode LEDs light up, the factory setting has been restored,
you can now release the EXP. MODE button.
BEAT LED –The green BEAT LED either blinks at the current delay time setting
(if delay time is set by the DELAY knob) or the tempo that you tapped in. Cycling
through the TAP DIVIDE settings will not change the BEAT LED blink rate. If you
are modulating the delay time, the change in delay time due to modulation will
be reflected in the BEAT LED.