Teac A-3300S - Playback of Dolby-Encoded Tapes.13; Making Copies from the 3300 S

Special Playback Information
Playback of Dolby-encoded Tapes
To enjoy the benefits of the Dolby Noise Reduction System,
both recording and playback levels must be matched. There¬
fore, “Dolby-encoded”, “Dolby processed”, or “Dolbyized”
tapes must be played back through a properly calibrated
Dolby Noise Reduction unit, available from TEAC and
other companies.
1. The Dolby NR System is not a filter and will not elimi¬
nate noise present in the original source, such as scratches
or clicks.
2. Improvements in recording tape itself (such as low noise/
high output tape) have significantly reduced the inherent
tape noise level. Although the Dolby NR System is still
contributing to an improved signal to noise ratio when
using these tapes, the advantage of the system may not
be so readily apparent.
Making Copies from the TEAC 3300S
Dubbing or duplicating your tapes for others to enjoy is
one of the pleasures of tape recording. Perhaps the major
limitation is the build-up of tape noise which accompanies
successive generations of tape copies. Here are some guide¬
lines for avoiding noise build-up and other problems.
1. Use the highest recording levels possible without
exceeding the saturation point of 0 VU. Set the
playback level first so that it does not exceed the re¬
ference. Then set the recording level using source monitor
to exactly the same VU readings. NOTE: See #3 below
for cassette recording.
2. Dolby Noise Reduction processing will almost complete¬
ly prevent subsequent tape hiss build-up, provided that
the original recording was Dolby encoded. Before copy¬
ing Dolby-processed tape, use the Dolby Level Calibra¬
tion Tape to set the playback output level on the
3300S. Then replay the Calibration tape on the 3300S
to set the Input Level on the recording deck to 0 VU.
Once calibrated, do not change the setting of the
OUTPUT Level Control on the 3300S or the Input
Level Controls on the other deck. Do not use a Dolby
NR Unit between the two decks. If one is connected,
keep its DOLBY NR switch to the OUT position.
Note the exception in #3, below.
3. Open-reel Dolbyized tapes are sometimes recorded at a
higher signal level than cassettes. If a direct copy is at¬
tempted, the cassette tape is liable to sound distorted
because of high level saturation. When making Dolbyized
copies onto a cassette from the 3300S, this fact prevents
accurate Dolby Level calibration between the decks. It
is recommended, therefore, that you use a separate
Dolby NR Unit between the decks, place its Dolby NR
switch IN, and select the playback mode. Have the built-
in Dolby system on the cassette deck re-process the
program while recording.
Open reel to cassette copying
TEAC 3300S Dolby Noise Reduction Unit Cassette Deck
(TEAC AN-60)
*“DOLBY” and the Double D symbol “ ID” are trademarks of Dolby Laboratories, Inc.