18 19
LFO RATE - Sets the frequency of modulatio n of the Delay Lin e by the
LFO. The R ATE can be varied fro m .05 Hz to about 50 Hz. The LFO RATE
LED indicates both the R ATE and WAV EF OR M of the current LFO settings.
The LED is red wh en the R AT E is set from the front panel, green when the
rate is set by the TAP TEMPO switch, and orange when the LFO is synced
to MIDI clock. When synced to MIDI clock, the R ATE control is quantized to
select only rhythmic subdivisions of the MIDI clock tempo .
LFO AMOUNT - Sets the overall amount of modulation of th e Delay Line
by the LFO.
Note: As the L FO Amount in creases , the fun ctional range of the DE LAY TIME control
is decrea sed, so that th e maximum a nd minimum delay times ar e not exceed ed
.
BYPASS - Used to turn the ef fect ON and O FF. When the ef fect is on the
Bypass LED is green. When the effect is in SPILLOVER mode the BYPASS
LED is orang e. When the effect is off the BYPASS LED is red.
TAP TEMPO - Dedicated switch used for setting the DELAY TIME or the
LFO RATE to a musical tempo.
To initiate Tap Tempo control of the DE LAY TIME, press the TAP TEMPO
switch three times with the tempo you want (quarter notes). On the third
press, the TIME LED will change to Green, and the DELAY TIME will change
rates to match the timing of the switch presses.
If you continue to press the TAP TEMPO switch, the TIME will be set by a
running average of the time between switch presses. To start over, wait
five seconds and then press the TAP TEMPO switch three times to set a
new tempo.
To revert the unit to front panel control, simply turn th e TIME control. The
TIME LED will turn red, a nd the DEL AY TIME will set by the pa nel control.
To initiate Tap Tempo control of the LFO, p ress and hold the TAP TEMPO
switch for at least one secon d. The LFO LED will flash green to show that
the tap tempo is now routed to the LFO a nd not the DE LAY TIME. To
change ba ck, press and hold the TAP TEM PO switch again until the TIM E
indicator fl ashes green.
When Tap Tempo is routed to the LFO pressing the switch three times or
more will set the LFO rate to match the tap time. Turning the R AT E kno b
reverts the unit back to front panel control.
Note: When e ither desti nation (time o r LFO) is synch ronized to MI DI Clock m essage s,
Tap Tempo is disable d for that destination onl y
.
OUTPUT LE VEL - Sets the stren gth of the Analog Delay output at the
MIX OUT and DELAY OUT jacks. This control is only ac tive when the ef fect
is on or in Spillover mode. Th e OUTPUT LEVEL contro l is designe d so that
an overall boost, attenuation or zero gain s tate can be achieved with any
DRIVE setting.
MIX - Sets the ratio of dry (signal as input) to wet (effected) signal. This
control is only a ctive when the effect is on. Set fully counterclockwise it
allows only th e dry signal to pass to the MIX output. The full clockwise
position allows only the wet sign al to pass to the MIX output. Any position
between the two will blend wet and dry signal to the output. The D E LAY
OUT signal is not af fected by the MIX control.
Note: If you’re a pplying a su stained ste ady pitch to th e MF-104 M and the MIX cont rol
is set near 12 :00, you m ay find that the di rect and de layed signals a lternately r einforce
and cance l each othe r in rapid suc cession a s the DELAY TIM E is varied . This is a normal result of mixing a steady pitch with a delayed r eplica of itself. It i s the anal ogdela y equ ival ent of “st anding waves ” in a reverbe rant room .
DELAY TIME - Sets the length of delay from the BBD Delay Line based
on the SHORT/LONG (Delay Range) switch setting. I n SHORT mode, with
AMOUNT set to 0, the de lay time changes from approximately 40ms to
400ms n ominal. I n LONG mode the available span is from ap proximately
80ms to 80 0ms nominal. The D ELAY TIME is modulated via th e LFO to
create various effect s.
Since the delay’s internal anti-alias filter must change for the delay time,
the SHORT setting will yield a higher freq uency response for the same delay
time as LONG. Switching from SHORT to LONG will reduce the sound in
the “fee dback loo p” one octave, while switching the other direction will
double the pitch and time of th e loop soun d.
FEEDBACK - Sets the amount of D elay Line output fed back into the input
of the Bucket Brigade Device. The feed back is variable from of f, slapback
or single repeats, to continuous repeats (at about the 3:00 setting). When
turned past 3:00, the FEEDBACK provides for self-oscillation and swelling
delay sounds.
WARNING: The Analog Delay Fe edback c ontrol is ab le to drive the Delay Line into
self-oscil lation. This me ans the Analog D elay is capable of pr oducin g sou nds w itho ut
any audio sig nal prese nt. Tones produc ed by self-osc illating fee dback may b e much
stronger t han normal s ignal levels . Plea se watch yo ur spea kers and e ars. Os cillation
typical ly begins at t he 3:00 pos ition.
LFO WAVEFORM - Selects the LFO waveform for modulation of the Delay
Time. The re are six waveforms available: Sine, Triangle, Square, Sawtooth,
Ramp and Sample and H old (Rand om Stepped) waveforms.
Note: No mod ulation will b e heard with th e LFO AMOU NT set to zero .