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6. Increase
the
preamplifier
volumes
gradually
until
the
output reaches an optimum level.
7. Listen carefully to the music reproduced by the system
and, if desired, readjust the switches and level controls of
the SF-700 for optimum performance, in keeping with the
room acoustics.
TWO-WAY
SYSTEM
1. Check the brochures of the speakers to be used and find
the recommended
crossover frequency for them.
Set the
LOW-MID
or
MID-HIGH
switch
to the crossover
fre-
quency.
For example, if the crossover frequency is to be
set to 500 Hz, set the LOW-MID
switch to 500 and the
MID-HIGH
switch to OFF.
If the crossover frequency is
to be set to 2000 Hz (2 kHz), set the MID-HIGH
switch
to 2K and the LOW-MID switch to OFF.
2.The
cut-off
characteristic
should
be
selected
in the
following way:
If the LOW-MID
switch has been set to
OFF,
use
the MID-L
and HIGH
switches
to select a
desired cut-off characteristic.
If the MID-HIGH
switch has been set to OFF, use the
LOW
and
MID-L
switches
to select a desired
cut-off
characteristic.
Setting for a three-way system also apply to a two-way
system.
8. The
operating
procedures
for the SF-700,
preamplifier
and
power
amplifiers are essentially the same
as those
(par. 4 to par. 7) mentioned for a three-way system.
3-D SYSTEM
1. Set the LOW-MID
switch to 125 or 250
If the system is three ways, use the MID-HIGH
switch to
select
the
crossover
frequency
recommended
in
the
brochure of the speakers to be used.
2.The
cut-off
characteristic
should
be
selected
in the
following way: Set the LOW
switch to 18 dB/octave, and
set the MID-L
switch to an optimum slope determined
from the characteristic of the midrange speakers used.
8.The
subsequent
operating
procedures
for the SF-700,
preamplifier
and
power
amplifiers
are
essentially the
same as those described in par. 4 to 7 under "Three-way
System."
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