Advent 100A Owner's Manual page 18

SPECIAL MODE
Listenin to and/or taping Dolby-proce ed broadca t .
At any time, you
can Ii
ten to and simultaneously
record Dolby-processed broadcasts simply as follows:
1. Fir t be ure that your recorder is properly
calibrated to the Model lOOA as described in the in truc-
tion for the ORMAL Mode.
2. elect the FM tuner on your amplifier input
selector, and set your amplifier' tape monitor switch
to "tape."
3. et all the witches on the Model lOOA to the
"*"
po ition .
4. et the lOOA' s INPUT and RECORD LEVEL
control to the previously marked FM-calibration
position .
Your sy tern i now set for listening to decoded
Dolby-proc ssed broadcasts. At any time, you may tape
a proce ed broadcast simply by starting your recorder.
While listening to and/or taping a Dolby-processed
broadca t, b sure not to disturb the Mod l lOOA' s
PUT and RECORD LEVEL control , and the output
1 v 1 control on the FM tuner (if any).
The resulting tape should be played back like any
other Dolby-processed tape, with the Model lOOA in the
ORMAL mode and
the 01 E REDUCTIO in.
When the tape is played back, the decoding proce s
reduce both the noise of the broadcast and that added
by the taping.
ote: If
you are recording in the above manner on a
three-h add ck, you will not be able to monitor the tape
while recording, because in the SP CIAL mode, the
TAP position of the OUR -TAPE witches feeds the
decoded source signal back to the amplifier, not the
ignal from the tape recorder (as is the case in the
ORMALmode). In the OURCE po ition, you will
hear th Dolby-processed ource, without decoding.
Be ure not to change the MODE swtich to
ORMAL when taping a Dolby-processed broadcast.
Wer you to do o, "double" Dolby-proce sing would
occur to the ignal (the already-proce sed broadcast
would pa through the Model lOOA' s record processors),
and a strange- ounding tape would result. Furthermore,
this "double" processed signal would be undecodable
back to a conventional signal.
Decoding and copying Dolby-processed tapes
played from a second tape deck.
Th Mod l lOOA can
be
u ed to decode Dolby-
proce d tap s played on another deck connected to
the
~propriate
auxiliary inpu ts of your amplifier or
receiv r. (To
record
on more than one deck, con ult the
Appendix.) t the same time, the deck connected to the
15
Model lOOA can be u ed to make copies of such tapes.
o change
in
connection i required.
Once the controls are properly set, the signal from
the second deck will be fed through the lOOA' s decoding
circuits and back to the amplifier for listening; simul-
taneously, the signal from the Dolby-processed tape
playing on the econd deck will be fed unaltered to the
deck connected to the Model lOOA for making a
Dolby-processed copy.
1. Select the appropriate auxiliary po ition on the
amplifier input elector for the econd deck.
2. Set the amplifier's tape monitor switch to "tape."
3. Set the Model lOOA's MODE switch to SPECIAL,
and all controls except the MX FILTER so marked to
the
"*"
positions.
4.
If the tape to b
played and/or copied ha a Dolby
Level tone on it, thread it onto the second
deck. If
not,
thr ad the Dolby Level tape onto the econd deck.
5. Play the recorded Dolby Level tone. A it play ,
adjust the Model lOOA' RECORD LEVEL control so
that the Dolby Level meters read to the line.
If
both
meter don't read to the line, adjust the appropriate
I PUT LEVEL control o that they do.
6. If
steps 4 and 5 required the u e of the Dolby
Level tape, remove it from the econd deck and thread
onto it the tape to be copied.
7. Play the
tape. If
you wi h to make a copy, imply
start the deck connected to the Model lOOA recording at
the ame time. When li tening to and copying Dolby-
proces ed tapes, do not adjust the Model lOOA' s
RECORD and INPUT LEVEL control , or any level
controls on either recorder.
Thi
is es ential to ensure
proper decoding of the tap for listening as it plays, and
to ensure that the Dolby-proce ed copy will be made at
preci ely the same level as the original.
The re ulting tape copy should
be
played back like
any other Dolby-processed tape, with the Model lOOA
in the ORMAL mode. When the copy is played back
with the 01 E RED 0 ' in, the decoding pro s
reduce the noise of both the original tape and that
added by the copy.
Note ·on copying Dolby-processed tapes:
1.
If
you are in the habit of putting a Dolby Level
tone on your tapes, do o after completing step 5 above
by copying the recorded tone as it play on the econd
deck.
2.
If
you are making the copy on a three-head deck
connected to the lOOA, you will not be able to monitor
the tape while recording.
3. Be sure not to change the Model lOOA' s MOD
switch to ORMAL while copying a Dolby-proces ed tape.