ADA 64i-1.28i-2.56i owners manual
(F) Select the "ON" position of the rear panel POWER SWITCH (the TRIANGLE LED
should now be lit), then set your amplifier's power switch to the "ON" position.
(G) Engage the EFFECT IN pushbutton. Your DIGITAL DELAY is now ready for
operation.
3.1 INPUT/OUTPUT ADJUSTMENT
(A) The 4-step HEADROOM LED Meter provides accurate monitoring of the input signal
level relative to the clipping level. To properly set the input level: find the strongest
signal or musical passage that you will put into your DIGITAL DELAY, and set the
INPUT LEVEL control to just barely light the red "0dB" HEADROOM LED. The LED
should flicker only on the strongest signals or notes
Never set the INPUT LEVEL
control so the "0dB" LED is constantly on.
Note that the HEADROOM LED Meter monitors, all Signals entering the delay line.
The REGENERATION LEVEL control may effect the headroom and therefore the
readings. While performing, always remember to monitor the HEADROOM LED
Meter for possible overloads.
(B) The OUTPUT MIX control mixes the processed signal with the dry input signal. For
use with instruments, the control will most often be in its center range. For studio
applications where your DIGITAL DELAY is in an effects loop, the MIX control is most
useful in the full clockwise, "DELAY", position. The processed signal level (and thus the
dry/effect mix) is now controlled at the console.
(C) The OUTPUT LEVEL control sets the level of the EFFECT OUTPUT whether in
bypass or effect "IN" mode. In general, guitar level signals will have the control in its mid-
scale or higher, line level signals will generally require positioning the control more
counter-clockwise.
Remember, proper setting of the INPUT/OUTPUT LEVEL controls is necessary to achieve
maximum performance with the least amount of noise and distortion.
3.2 REMOTE FUNCTIONS
EFFECTS BYPASS and REPEAT HOLD are remotely controllable via the rear panel jack
labeled REMOTE. The REMOTE jack accepts a standard ¼” stereo cord (tip-ring-sleeve).
The stereo cord connects with two momentary footswitches. In the EFFECT BYPASS mode,
the input signal source is routed to the EFFECT OUTPUT. BYPASS is actuated by a
momentary closure which grounds the tip to the sleeve. The REPEAT HOLD function allows
non-deteriorating repeat of any source stored in the delay memory. REPEAT HOLD is
actuated by a momentary closure which grounds the ring to the sleeve.
Note that the front panel switches may also be used while the dual footswitch is connected
3.3 REGENERATION SECTION
As the REGENERATION LEVEL control is turned clockwise, more of the delayed audio
signal is sent back to the input of your DIGITAL DELAY. When using short delay settings,
from 0.15 to 40ms, the REGENERATION LEVEL control adds emphasis or resonance to
flanging and chorusing. At longer time delays, from 80 to 2560ms the REGENERATION
LEVEL control adds repeat echos extending to 50 seconds or more.
Room ambience or naturally reflected sounds are quite different from the original signal
because reflective surfaces of a room absorb high frequencies more quickly than low
frequencies. ADA DIGITALS can simulate room acoustics by rolling-off the higher
frequencies with the continuously variable REGENERATION HI-CUT control. At minimum cut
(16kHz), the delayed signal is not altered. In the maximum cut position (1.0kHz), all
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