Speaker Phasing; Filter Indicator - Marantz DIGITAL PM630 Handbook Of Instructions

Digital monitor premain amplifier
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LOUDNESS SWITCH
Compensates
for human
hearing characteristics by boosting the
bass and treble response
at low volume
levels to achieve a more
pleasing
tonal
balance.
The
LOUDNESS
indicator
lights when
this switch is pressed.
(25) BALANCE CONTROL
To adjust the level of the right and left channels. An
LED
lights
when
the right and left channel output levels are balanced; how-
ever, it goes out if the output level of either channel is changed.
It does not affect the signal present at the TAPE MONITOR
OUT
jacks.
MONO MODE SWITCH
Press this switch
to place the unit in the monaural
mode.
(The
MONO
indicator lights.)
(27) TAPE COPY SWITCHES
These switches are used for recording or dubbing with tape decks.
Pressing either of these switches selects the signals which are sent
to
two
tape
decks.
See
the
paragraph
""USING
CASSETTE
DECKS" for further details.
HIGH FILTER SWITCH
Press this switch to eliminate noise from scratches on records or
in AM broadcasts.
(29) SUBSONIC FILTER
This filter (20 Hz) is used to reduce turntable and low frequency
noise.
FILTER INDICATOR
When
the HIGH/SUBSONIC
FILTER
switch is pressed, the LED
lights.
(1) TONE CONTROLS (TREBLE, BASS)
These controls are used to adjust the tone. Moving either control
in the (+) direction boosts the applicable frequency range, moving
it in the (—) direction attenuates it.
TREBLE:
Adjusts the level of high tones.
BASS:
Adjust the level of low tones.
82) SPEAKER SWITCHES
To select the pair of speakers used. Both pairs can also be operated
simultaneously.
CAUTION:
We strongly
recommend
that the volume be reduced
'
before switching
speaker systems to prevent
damage
to your
loudspeakers.
SPEAKER INDICATOR
Pressing one of the SPEAKER
switches lights either the SYSTEM
1 or SYSTEM 2 LED.
PHONES JACK
Accepts
headphones
utilizing a standard
three conductor
phone
Plug (low impedance as well as high impedance units),
Plugging in the headphone cuts off output to the speakers.
SPEAKER
PHASING
To assure the best stereo separation
and frequency response the
speakers must
be properly phased. The positive terminal on each
speaker should
be connected to its respective positive terminal on
the amplifier
and
the negative
terminal
of the speakers to the
negative terminais of the amplifier.
PLAYBACK
"@ RECORD PLAY
2. Start the turntable to play a record.
3. Adjust the volume control,
4. Adjust the tone controls (BASS, TREBLE)
to suit your taste.
FM/AM RECEPTION
. Press the TUNER button. The TUNER
LED lights.
. Tune in your desired station.
Adjust the volume control.
SON
>e
USING
CASSETTE
DECKS
e
TAPE PLAYBACK
Notes:
e
RECORDING
2, Play the program source.
3. Record the program source with the cassette deck.
Notes:

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