Table of Contents
Advertisement
PREAMPLIFIER AND POWER AMPLIFIER CAN
FUNCTION
SEPARATELY
|
The preamplifier section of the: SA-8100 can be used
alone, and its output signal supplied to a separate high-
powered amplifier to service large halls, theaters, etc. Or,
another power amplifier can be compared with that of
the SA-8100
by switching back and forth. Also, the
signal from the PRE OUT outputs — which has passed
through the tone controls, filters, etc. — can be recorded
on tape.
|
For such applications, the SEPARATION switch on the
rear panel must be moved to either of its lower two
(SEPARATED)
positions. These two positions are for
turning the SUBSONIC filter in the power amplifier ON
and OFF. For an explanation of the subsonic filter, see
page 9, item LOW FILTER.
|
A MULTI-AMPLIFIER SYSTEM CAN BE ASSEMBLED
By adding an electronic crossover network (e.g. Pioneer
model SF-700) and one or two additional power ampli-
The electronic crossover network divides the audible fre-
quency spectrum into two (low, mid-high) or three (low,
medium, high) ranges, and each is then augmented in a
separate power amplifier and reproduced via special loud-
speakers. Fig. 4 shows such a two-way multi-amplifier
installation. Compared with conventional full-range am-
plification,
it offers numerous
advantages:
Less or no
intermodulation distortion in speakers and amplifiers;
precise matching
of crossover
frequencies to speaker
characteristics;
individual level control of each band in
each channel; greater overall power; elimination of con-
ventional, passive crossover
networks in the speaker
systems, with their inherent problems.
SPEAKER
SYSTEMS
RIGHT SIDE
POWER AMPLIFIER
(HIGH-RANGE)
Connection
1
2.
. Connect PRE OUT jacks of SA-8100 to
inputs of electronic crossover network.
Connect LOW range outputs of electronic
crossover network to POWER IN jacks of
SA-8100.
. Connect MID-HIGH outputs of electronic
crossover
network
to inputs
of second
power amplifier.
. Connect
woofers to speaker outputs of
the
SA-8100.
Connect
mid-high-range
speakers
to speaker outputs of second
power amplifier.
. Set separation switch on the SA-8100 to
SEPARATED position.
Advertisement
Table of Contents
