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16. MEMORY ENTER
tally press ENTER, you can force the circuit to back out of
the ENTER mode by briefly switching to the other tuning
band (e.g., from FM to AM and back), or by tapping the
Tuning rocker.
17. SEARCH MODE
When the SEARCH
button is engaged, the tuner scans
in a station-by-station mode rather than in small frequency
increments. When the Up/Down Tuning rocker is tapped,
"the tuner scans up or down in frequency and automatically
stops at the next station whose signal is strong enough for
good reception.
;
If you want to tune to a weak station, or if you want to
fine-tune the tuner manually, disengage the SEARCH mode
(button OUT), allowing the Up/Down Tuning rocker to tune
in small increments.
18. UP/DOWN TUNING
The Up/Down Tuning control is a "rocker" switch
that allows you to tune up and down the AM or FM radio
spectrum. Depress the right-hand section of the rocker in
order to tune to higher frequencies, or the left-hand section
to tune to lower frequencies.
When the Tuning rocker is pressed momentarily, the
tuned frequency shifts up or down by one step, unless
SEARCH has been engaged. (If SEARCH is engaged,
the tuner will scan in a station-by-station mode rather than
in fixed tuning steps.)
In North America the size of this tuning step is 10 kHz on
the AM band. In Europe and elsewhere the tuning step is 9
kHz on AM. In either case the tuning step for the FM band is
0.05 MHz. Each time the Tuning rocker is tapped, the tuned
frequency will shift up or down by this minimum tuning -
increment, as shown on the digital frequency display.
If the Tuning rocker is held down with continuous
pressure rather than just tapped, the tuning pauses briefly
and then scans rapidly up or down in frequency.
Thus, to manually tune a station, the procedure is to
press continuously on either side of the Tuning rocker until
the tuned frequency is close to the desired broadcast fre-
quency, and then fine-tune by tapping the Tuning rocker
until the digital frequency display exactly matches the sta-
tion's broadcast frequency as listed in a local newspaper
or broadcasting guide. If you know the exact broadcast
frequency, simply set the tuner to that frequency. If you
know only the approximate frequency, tune to the vicinity
of the station and then fine-tune for best sound. On FM,
fine-tune until the center-tune indicator is illuminated.
A NOTE ON OVERLOAD PROTECTION
Because NAD amplifiers sound so clean and musical
when driven beyond their nominal power ratings and when
used to drive low-impedance loudspeakers, you may be
tempted to stress this amplifier beyond its design capacity.
it can safely and cleanly drive impedances as low as 2 ohms
with wide-range musical signals whose peak level is 50 watts
or more, but it may overheat if called upon to deliver high
power continuously into a low impedance.
Thus you may play music-at volume levels which cause
the brief transient peaks and climaxes in music to exceed the
amplifier's rated power by a considerable margin (and with
Soft Clipping the music will continue to sound good at those
high peak levels). But if you overdrive the amplifier continu-
ously, rather than only on brief musical peaks, the output.
transistors may overheat.
This is particularly likely if you set the SPEAKER
IMPEDANCE switch to 8 OHMS and then try to drive very
low impedances at high volume levels. Severe abuse of this
type could cause internal fuses to blow in order to protect
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