Meamvlnile, back at ttre
FEEDBACX control, the
processed
audio
(delayed
signal) is
fed back to a
surTrning
point
and
mixed wittr
ttre
incoming
signals
at ttre ArzD
converter
input.
The
FEDBACK control,
like
the DE.AY !tD(
control is a center
ta5ryed
Sntentioreter.
fhe center
tap
is
grounded
so
ttrat
ttrere
will be
no
feedback l*ren
ttre control is on
ttre center
Snsition.
Again,
like the
DEIAY MD( control,
bottr
phases
of ttre
processed
audio
are
available at each extrene terminal.
llherefore, only one
FEEDBACK control
is
used
for both
positive
and
negative
feedback.
Before
being
mixed
wittr
ttre
pre-conditioned
inprt, the feedback
signal is
filtered
via
a L2kHz
low
trnss
filter to create a
rpre
natural and
pleasant
sounding
echo retrnat as
well
as
to keep ttre noise
level
from hrilding
up
when
nnximum feedback is
used.
A
digital
feedback
Inth
exists from
ttre nernory outtrut to ttre rerpry inp:t
constitutjng
an infinite retrnat
c1rc1e.
B1r
depressing the red INFIMTE
REPEAT
Sush
button to
the
'in"
Snsition,
the
digital
rerory is recirculated
i:rdefinitely.
ftre
resulting audio out
is
an echo ttrat
never dies out. Itl
ttre
ADIvI
256, ttris echo
is 256 msec
(L/4
of
a second) at ttre maxfun:m
setting
of the
DEIAY FACTOR
control: Ihis
sare echo is over a
fuII second
(1024
rcec)
on ttre ADM
1024.
To defeat
ttre repeat function,
sinply
trush
ttre
red
IIEINIIIE REPEAT button
so ttrat is
is
returned
to ttre
'outtr
trnsition.
I'ltren
the
INFINIIE RPEAT button
is in
the
'outn trnsition, 1ou
have
ttre
option of using
the rear
panel
INFIMIE REFEAT
jack
(AEM
1024 only). By
using a mono
ptrone p1t4J,
1ou
will
nov be
able
to activate
the
jnfinite
reSnat
function
via a foot svitch. As shovnr
beIow,
by
shorting the tip
to
the sleeve, the
digital
rrerrpry
will
be
recirculated
indefinitely.
lto defeat
this function,
you
sinply discoru:ect ttre tip
from
the
sleeve.
MONO
CABLE
Switch Close
=
lnlinite
Repeat
Switch Open
=
Normal
l[tre
last
Snssible
signal
path
is
the
BPASS wtrich
requres ttre
use
of a
stereo
(three
conductor cable)
tr*rone
plug
to be connected
to ttre HIPA.SS
jack
located
on the
rear
panel.
B1r
shorting
ttre
TIP to ttre
RllG,
the
pre-
conditioned
audio is
directly
routed ttrrough ttre cable and back to the
de-
enphasizing
circuitry
in
ttre unit to b14nss
all
digital and
feedback
signal
paths.
A sirple schenB
for
doing
ttris is
shovn
on
ttre next
5nge.
6
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