dbx 122 - Page 21

20
Record
Inputs
(Aux
or
Line).
The
dbx
unit’s
RECORD
OUTPUTS
and
PLAY
INPUTS
are
not
used
for
this
process
and
it
makes
no
difference
whether
any
cables
remain
con-
nected
to
them.
If
your
tape
recorder
is
equipped
for
off-the-tape
monitoring
and
you
wish
to
listen
to
the
tape
as
it
is
being
recorded,
you
can
connect
your
tape
recorder’s
PLAY
OUTPUTS
directly
to
your
preamplifier’s
TAPE
INPUTS
(Monitor
tn).
2.
Set
the
dbx
front
panel
switches
as
shown
below:
@ 0@0 00e 33
: = S|
dbull casacasme 122 dbx W sosratacss
@-,- O=zourd tb
Copying a dbx-Encoded Tape
Making
a
dbx-encoded
copy
from
a
dbx-encoded
master
*
provides
a
copy
with
no
more
audible
noise
than
the
master
tape.
1. Since the encoded tape does not require additional
dbx
II
processing
in
order
to
be
copied,
the
master
machine’s
Play
Outputs
can
be
connected
directly
to
the
slave machine’s Record Inputs.
2. ADJUST THE RECORD LEVELS ON THE SLAVE
MACHINE FOR LOWER LEVELS AS IF RECORDING
WITH dbx PROCESSING.
3. Tape copies encoded on the 122 or 124 can be played
through any dbx | decoder (120 or 140 series), and will
*{n
the
discussion
of
copying,
we
use
the
term
“master
machine”
to
refer
to
the
tape
machine
with
the
program
to
be
copied.
We
use
the
term
“slave
machine”
to
refer
to
the
tape
machine
which
is
to
record
the
program.
have no more audible noise than the original master tape.
NOTE: Making a non-encoded copy from a non-
encoded
master
is
identical
to
the
procedure
outlined
above,
although
average
recording
levels
should
be
raised
by about 3dB.
MASTER SLAVE
MACHINE MACHINE
Fig. 13 — Copying dbx-Encoded Tapes or Non-encoded
Tapes Directly From One Tape Machine to the Other.
Making a Non-Encoded Copy of a dbx-Encoded Master
Making
a
non-encoded
copy
from
a
dbx-encoded
master
is
sometimes
necessary
so
that
the
copy
can
be played
where
dbx
II
tape
noise
reduction
equipment
is
un-
available.
The
copy
will
be
similar
to
an original
recording
made
without
the
benefit
of
dbx
processing:
in
other
words,
with
restricted
dynamic
range
and
audible
tape
hiss.
The
encoded
master
tape
(tape
A)
must
be
dbx-decoded
prior
to
feeding
the
slave
machine
(tape
B).
This
may
be
accomplished
in
a
number
of
ways
depending
on
the
nature
of
your
installation.
If your preamplifier, amplifier or receiver has two tape
monitor loops with switching for ‘Dub A to B” or similar
copying provisions, no special connections are required
(Figure 14).
1, Set the dbx front panel switches as follows:
8
{Ou
Press PLAY instead of BYP
for 4-channel tapes