Tape Monitor - Denon DRS-810 Service Manual

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TAPE MONITOR BUTTON
This Stereo cassette deck uses a three-head system which permits simultaneous ''off-the-tape monitoring' during
recording. Incidentally, as this Stereo Cassette Deck adopts an automonitor system, {TAPE} or| SOURCE)can automatically
be activated according to the operation conditions. These modes can also be activated manually.
The signal recorded on the tape is monitored simultaneously
"off-the-tape''. This monitoring. mode enables you easy
check for optimum recording levels. In the | TAPE | mode,
the FL PEAK METER indicates the signal levels played back
off-the-tape.
The| SOURCE] position enables you to monitor the input
source signal before it is recorded on the tape. Using the
FL PEAK METER, this mode is convenient for setting
recording levels or input level monitoring during recording.
Monitor button =» | TAPE
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Tape
Recording
Monitor button » |SOURCE
»
tape
Rac Head
t
Output
Monitor button ® | TAPE |
~ lene
P/B Head
During playback, the MONITOR button must be placed in
the! TAPE | position. If it is set in the SOURCE position,
the signal from the tape won't be heard.
Playback
Output
DOLBY B & C NOISE REDUCTION SYSTEM
MThe Dolby noise reduction system substantially reduces W The operating principle of Dolby C NR is similar to that
the tape background noise (hiss) inherent in the cassette of Dolby B NR except for the encoding/decoding response
medium. Dolby B NR is most widely in use. However, curves. The noise reduction effect obtained with Dolby
Dolby C NR is a much more recent development and C NR is up to 20dB, compared to 10dB with Dolby B NR.
represents a significantly improvements over Dolby B NR. In addition, Dolby C NR uses an anti-saturation network
@ Tape background noise consists primarily of high frequency and spectral skewing circuitry, for a significant improve-
information which is particularly annoying during soft ment in the dynamic range of the mid- to high-frequencies.
passages. The Dolby NR system increase the level of
low volume mid and high frequency signal! during recording
and reduces the level of these signals by an identical
amount during playback. As a result, the playback signal
is tdentical to the original source signal, but the level
of background noise generated by the tape is greatly
reduced.
DOLBY HX-PRO HEADROOM EXTENSION SYSTEM
engaged or not.
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