Nikko alpha ii Service Manual

Page 2

OPERATING PARTS

POWER

Set the power switch to the ON position and the power
is turned on. The power meters will be illuminated,
indicating that the power is on. The unit will become
active 3 to 6 seconds later because of the employ-
ment oi a protective circuit and relay.

SPEAKERS

This switch is used to select speakers connected to the
A and B speaker terminals on the rear panel. When the
switch is set to the A+B position, both speakers con-
nected to the A and B terminals are operated at the
same time. Speakers may be connected to the A or B
terminals only, if desired. At the OFF position of the
switch, no speakers will operate.

METER RANGE
These two pushbutton switches are used to select the
sensitivity of the power meters in 4 steps.

With the switches ('a and 'b') in the released position
(H), the power meters will indicate OdB when the
output power of a single tone sign-wave signal reaches
120W (at 8-ohm load).

By pressing the button switches as shown on the front
panel, the OdB position on the power meters represents
30W for -6dB setting, 7.6W for 712dB setting and
0.48W for 724dB setting, respectively.

POWER METER

The power meters indicate the levels of left and right
channel output power in dB. Power levels can be read
directly on the meters with the meter range switches

(3) set in the OdB (released) position.