Front Panel Controls - NAD 310 Manuel Del Usario

5. AUX INPUT.
Any "line-level" audio signal can be connected
here, such as the playback signal from a second CD
player, or with an external step-up amplifier, a
turntable.
6. VIDEO SOUND INPUT.
Connect a video-related audio signal here, such
as the audio output from a video cassette recorder,
laserdisc player, TV monitor/receiver, or stereo televi-
sion decoder. Alternatively, any "line-level" audio sig-
nal may be connected here, such as the playback
from a spare tape deck.
7. TAPEPLAY/REC.
These jacks allow you to connect tape recorder of
any type, especially a high-performance cassette or
open-reel recorder whose independent recording and
playback heads allow you to monitor the signal on the
tape immediately after it is recorded. Connect a
stereo cable from the TAPE REC jacks of this amplifi-
er to the recorder's LINE IN jacks, and a second
cable from the recorder's LINE OUT jacks to these
TAPE PLAY jacks.
The TAPE jacks may be used for a signal-process-
ing accessory instead of a tape recorder. Examples
of such accessories include a dynamic range proces-
sor, a noise filter, or a graphic equalizer. Connect a
patch cord from the TAPE REC jacks to the proces-
sor's inputs, and another patch cord from processor's
outputs to the TAPE PLAY jacks.

FRONT PANEL CONTROLS

1. POWER.
Press this button to switch on the amplifier. To
switch the power off, press the button again and
release it.
NOTE: When the amplifier is switched off with a
source (such as a CD) still playing there will still be
sound for as much as several seconds, depending on
the volume level, before it eventually dies out.
Although completely harmless, it can be avoided
switching off the source first or by turning down the
volume first.
CAUTION: In the off position the unit is still con-
nected to the mains. Disconnect the power cable
when the unit is not to be used for a long time.
2. BASS.
The Bass control adjusts the relative level of the
low frequencies in the sound. The response of the
amplifier is flattest when the control is set in the
detent at the 12 o'clock position. Rotation of the knob
to the right (clockwise) increases the level of low-fre-
quency sounds, and rotation counter-clockwise
decreases their level.
The Bass control has no effect if the TONE
DEFEAT button is engaged.
At moderate rotations away from center the effect
of the Bass control is subtle, because its action is
confined to the lowest audible frequencies, which are
not present in some recordings. Only at large rota-
tions away from center is there a substantial boost or
cut at the mid-bass frequencies that are common in
music.
3. TONE DEFEAT.
When this button is pressed the Bass and Treble
circuits are completely bypassed, restoring precisely
flat frequency response. When this button is OUT the
tone controls operate normally. By adjusting the tone
controls and then switching them in and out of the
signal path, you can evaluate their effect on the
sound.
4. TREBLE.
The Treble control adjusts the relative level of the
high frequencies in the sound. The response of the
amplifier is flattest when the control is set in the
detent at the 12 o'clock position. Rotation of the
Treble control to the right (clockwise) increases the
level of high-frequency sounds, and rotation counter-
clockwise decreases their level. Adjust the Treble
control to achieve the tonal balance that sounds most
natural to you.
Boosting the Treble increases the brilliance and
clarity of details in the sound, but also makes any
noise more prominent. Turning down the Treble
makes the sound mellower while suppressing hiss
and record surface noise; but too much Treble roll-off
will make the sound dull.
The Treble control has no effect if the TONE
DEFEAT button is engaged.
NOTE: At high volume settings (with the volume
control over the 12 o'clock position) both the Bass
and Treble controls do not have any effect anymore.
5. POWER INDICATOR.
The POWER indicator glows green when the ampli-
fier is switched on and ready for use.
6. PROTECTION INDICATOR.
The amplifier incorporates protection circuitry
against conditions such as overheating, short circuits,
and DC off-set. Under normal conditions, this indica-
tor will not light up and the unit will operate normally.
If however one of the decribed conditions occur, the
indicator will light up red and the unit will stop work-
ing.
TURN DOWN the volume all the way and SWITCH
OFF the amplifier IMMEDIATLY.
Investigate the cause for the protection circuitry to
trip, such as a short circuit in any of the speaker
leads or any wire touching an adjecant terminal at
either the amplifier's or loudspeaker's end.
If overheating was the cause (the amplifier's casing
will be very warm) ensure the ventilation slots at the
bottom and top are not blocked. Overheating can also
occur by playing very loud for a prolonged time. Wait
for a couple of minutes for the amplifier to cool down
before switching it on again.
If the protection circuitry remains engaged, even
after the amplifier has cooled down sufficiently and all
GB
NAD
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