space
With the internal jumper
Link
in place the ‘Shape’,
‘Depth’, ‘Speed’ and ‘Rhythm’ parameters of the
‘Right’ tremolo are the same as the ‘Left’ tremolo
settings. Further , when the ‘Tap/Sync’ footswitch is
pressed and held down, the ‘Shape’, ‘Depth’ and
‘Speed’ knobs become ‘Wow’ (speed variation),
‘Dither’ (wave shape dithering) and ‘Phase’ (variable
from 0
º-
180
º
) controls for the ‘Right’ tremolo.
CV (Control Voltage)
input allows the speed of the
tremolo to be controlled with an expression pedal,
such as the Roland EV-5 or EV-7. Other expression
pedals can be used if their potentiometer has a
resistance in the range of 10K to 250K and are wired
as shown below.
Tip: wiper (pin2)
Ring: +5V (pin 3)
Shield: GND (pin 1)
The
Delta-Trem
tremolo speed can also be
controlled using an external V .C.O. (voltage
controlled oscillator). Voltage range must be in the
range of 0 to 5 volts.
pace
C o nt ro l s
Shape
knob adjusts the character of the tremolo by
altering the L.F .O. wave shape. Wave shapes are
continuously variable, transistioning seamlessly from
one to another as the knob is rotated. More shapes
can be accessed via the 3-way ‘Filament/Fluid/Neon’
toggle switch on the rear panel.
Depth
knob controls the intensity of the tremolo
effect from a subtle shimmer to deep amplitude for
some good old Louisiana swamp blues. When fully
counter-clockwise the tremolo effect is cancelled.
This means the
Delta-Trem
is working as a tube
buffer/booster adding warmth and some additional
drive to the your guitar .
Speed
knob sets the tremolo modulation rate.
Rotating this knob clockwise increases the rate. The
Delta-Trem’s
unique ‘Raysistor’ circuitry is a
staggering improvement on the primitive phase-shift
neon oscillators found in vintage tube amps–being
smoother , deeper , richer and super-quiet in
operation (no audible ‘ticking’ noise).
In ‘tap tempo’ mode the ‘Speed’ knob functions as a
tap divide/multiply control when the ‘Tap/Sync’
footswitch is pressed and held down. Rotate the
‘Speed’ knob clockwise for
¼
(16th
♪
),
⅓
(eighth
♪
triplet),
½
(eighth
♪
), 1/1 (quarter
♪
), 3/2 (dotted
quarter
♪
), 2/1 (half
♪
), 3/1 (dotted half
♪
), 4/1 (whole
♪
) modulation speed divisors.