Philips N2521 - Recording and Playback Procedures; Performing a Recording and Playback; Advanced Playback and Head Cleaning

@ insert a cassette.
@ Switch on the Dolby system, if desired.
@ Press record key @); indicator G) now lights.
e@ Allow the equipment connected to play, or
speak or sing into the microphone and adjust the
recording level with control @ in such a way that,
during the loudest passages, the pointers of the
recording level meters @) and ©) deflect just to the
100% mark (Fig. 2) and the overload indicator (@)
just fails to light. Differences in the recording level
between the left and right channel can be cor-
rected with recording balance control @).
@ Now start recording by pressing start key 4;
tape travel indicator shows that the tape is
running. Check the recording level from time to
time and readjust it, gradually, as necessary.
@ For brief interruptions, press pause key @. To
start again, press start key (9.
@ To stop, press stop key
Playback
The recordings made can be reproduced through
headphones and/or through an amplifier:
@ Connect the headphones and/or an amplifier (or
a radio, tape recorder or record player which is to
serve as amplifier), to the appropriate socket (see
‘Connections’).
@ Adjust the amplifier for recorder playback.
@ Insert a recorded cassette.
®@ Switch on the DNL, if desired.
@ Switch on the Dolby system, if necessary.
@ Press start key (9.
e@ Adjust the volume and balance for the head-
phones with the controls @) and (@) or, when
playing back via an amplifier, adjust the volume etc.
on the amplifier.
@ To stop, press stop key (9.
Post-fading
It is possible, during playback, to fade-out and
fade-in parts of the recording. This is particularly
useful when undesired applause, announcements,
background noise, etc. are present on the tape.
Caution should be taken when using the facility,
since incorrect use can spoil the recording. It is
recommended that an old dispensable recording is
used to gain experience of this facility as follows:
@ Play the tape and take note of the start and
duration in seconds of the piece to be faded-out.
@ Rewind the tape to a point before the fading is
required and press start key @@.
@ Turn locking knob @3) clockwise with one hand,
keep it in that position and, as the selected portion
of tape approaches, push post fading contro! @4
downwards with the other hand (the sound will
now fade away). When moving the post fading
control upwards, the sound will return. The fade-in
and fade-out speed is determined by the speed at
which the post fading control is used.
Head cleaning indicator
It is recommended, to remove the dust which has
collected on the magnetic heads whenever head
cleaning indicator @) shows a red field. For this
purpose cleaning cassette, type 811/CCT, must be
played in the normal way with the recorder set for
playback. .
The heads may also be cleaned however using a
soft cloth or a cotton bud. To clean in this way
proceed as follows:
@ Ensure that the recorder is disconnected from
the mains.
@ Press eject key 6.
@ Moisten the cloth or cotton bud with a little
alcohol or proprietary cleaning spirit.
@ Now clean the fronts of the heads (@ and @
(Fig. 3), capstan © and the rubber pressure roller
Never use any other cleaning agents and do not
touch the heads with sharp or metal objects.
@ Allow all parts to dry before reconnecting the
recorder to the mains.
@ The drive mechanism must not be lubricated!
Furthermore, it is a good plan to have your dealer
examine the recorder perhaps once a year. Then,
the equipment can be cleaned, checked and
adjusted where necessary.
Technical data
{subject to alteration)
@ Switchable for mains voltages of 110, 127, 220
and 240 V.
@ Suitable without switching for 50 and 60 Hz A.C.
@ Power consumption: approx. 16 W.
@ Frequency range when using:
- ferro-chrome cassettes, DIN 45 500/NAB:
30-15,000 Hz/30-16,000 Hz;
- chromium cassettes, DIN 45 500/NAB:
30-14,000 Hz/30-15,000 Hz;
- ferro cassettes, DIN 45 511/NAB:
40-10,000 Hz/40-11,000 Hz.
@ Signal-to-noise ratio, without DNL or Dolby
system, according to DIN 45 405 and NAB when
using:
- ferro-chrome cassettes: > 58 dB;
- chromium cassettes: > 56 dB;
- ferro cassettes: >53 dB.
@ Wow and flutter:
DIN 45 507: <0.15%; NAB: <0.1%.
@ Fast wind time per side for a C-60 cassette:
<85s.
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