dbx 128 - Page 18

Tape Copying (Dubbing)
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
QUT
can
be
connected
directly
to
the
slave
machine's
RECORD
INPUT.
If
the
signal
passes
through
the
128,
it
is
not
necessary
to
disconnect
the
unit,
just
press
the
BYP
button.
(Figure
Q)
2.
Adjust
the
record
levels
on
the
slave
machine
as
if
recording
with
dbx
II
processing.
3.
Tape
copies
encoded
on
the
128
can
be
played
through
any
dbx
I!
decoder
(120
series),
and
will
have
no
more
audible
noise
than
the
original
master
tape.
See
page
30
for
a
discussion
of
the
encoded/decoded
processing
dbx-encoded tape on
Master machine
(machine in PLAY
mode)
Blank tape on Slave
machine (machine
in RECORD mode}
Fig.
9
—
Copying
dbx-Encoded
and
Unencoded
Tapes
Directly
from
One
Tape
Machine
to
the
Other.
*in
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.
17
differences
in
dbx
professional
systems
and
dbx
II
systems.
(Making
a
non-dbx-encoded
copy
from
a
non-encoded
master
is
identical
to
the
procedure
outlined
above,
although
average
recording
levels
should
be
raised
to
conventional
levels.
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ort
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il
Making
a
dbx-Encoded
Copy
from
a
Non-Encoded
Tape
This
is
occasionally
desirable.
The
copy
will
not
have
any
more
audible
noise
than
the
original.
1.
If
your
preamp
(or
receiver)
has
two
tape
monitor
loops
with
switching
for
“Dub
A
to
B”
or
similar
copying
provisions,
connect
your
system
as
shown
in
Figure
10.
2.
Set
the
128’s
front
panel
switches
and
controls
as
shown.
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3.
Set the
preamp
to
dub
from
the
Master
(machine
A)
to
the
Slave
(machine
B)
and
copy
the
tape.