INTRODUCTION
tm
Itre EFFETRON fI
is an
qdated
version
of ttre original
EFTaEON. It
is
a
studio
quality,
speciaI effects
processor
designed for
ttre
trnrforming
m,rsician.
I?re
qdates
include suggestions received from
ttre
nwry
satisfied
oyners of EEFETBOilIS...irTg)roved
inpt
stage, stereo outSuts and erren a
rernote
Infinite
Retrnat
jack
on ttre ADll L024.
You can
rest assured
ttrat
yorr
EEFETRON
II
will
becore one of ttre
rost
irgnrtant congnnents
in
lour
total
sound slctern.
CIRCUIT DESCRIPTION
EVen
if
you
are not
tecnically inclined, v€
urge
1ou
to
read
ttris chapter.
A basic understanding
of how
signals
are
processed
ttrrough the EFFECIRON If
vril1 make it
easier
to
predict
the
effect
of
control settings and
easier
to
plan
control settings
to achieve
desired sound
effects. BrtT
first a
word
about ttre
ngiuts"
of the design.
Orly
the
latest technology has been used in ttre
design
of
ttre EEFEIBON II.
this
aSplies to
conqnnents
as well as
circuit design.
For
exarple:
1.
ltre
po,v'er
sulp1y uses
a
toroidal transforner to minimize
hum
and
eliminate stray rngnetic fields.
2. Ihe digital
nrenory
consists of bottr
15K
and ttre
new
54K
(used
in the
ADM
1024)
Dynamic
MMrs
(Random
Access Merory).
3. A11 digital
integrated
circuits are CI'DS for lovr
[D$er.
4. All analog
integrated
circuits
consist of both biplar
and lOS
technology
for
both
lovr
noise and reliability.
5.
Precision
resistors
(+/-1-*l
are used
in
critical circuits to
insure
retrnatability.
6.
Ihe
printed
circuit board
is
standard miI
spc
G-10
materiaL.
7.
A11 ottrer corponents such
as
Sntentioreters,
sritches,
etc.7
have
been sirnilarly selected for optinun
qrality
and reliabiJ-ity.
8.
For
roadability,
ttre chassis is all
steel
wittr an aluninum
front
panel.
Ihe circuit design
incor;nrates
DEI,TAIABIs
trntented
Adaptive Delta
!{odulation
(AUt{)
technology
regarded
by audio
professionals
as
ttre
rpst
natural
and
cleanest sounding digital
encoding
technique. A detailed
orplanation of ttre circuit
designr
vid
the
block
diagram
shorn,
follows:
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