Bose Direct / Reflecting 901 Series 4 - Manual (Page 10)

Installation
2. Using Separate Components, Connecting Between the
Preamp and the Amplifier
The equalizer can be connected between separate pream­
plifier and power amplifier units (see Figure 5). This con­
nection method provides complete flexibility of the pream­
plifier tape monitor functions for use with one or two tape
recorders in the conventional manner. The disadvantage of
this connection method involves using conventional loud­
speakers and headphones because the equalizer is per­
manently wired into the circuit. (See SECTION IV.) If you do
connect the equalizer in this manner, it is suggested that
the gain controls of your power amplifier be reduced slight­
ly from fully clockwise for optimum system noise (consult
your amplifier owner’s manual for further recommendations).
3. Using the Preamp-Out/Main-ln Circuit
An alternate method of connecting the BOSE Active Equal­
izer makes use of the PREAMP-OUT and MAIN-IN jacks
provided by many manufacturers on their receivers or in­
tegrated amplifiers (see Figure 6). Using the PREAMP-OUT/
MAIN-IN connection jacks retains the total flexibility of the
tape monitor circuitry. However, this method of connection
permanently connects the equalizer in the circuit; this may
prove inconvenient if you are using conventional speakers
or headphones. (See SECTION IV.) Due to the circuitry
characteristics of some receivers, the equalizer may not
function if connected to these jacks. Also, system noise
may
increase slightly due to the connection of the
equalizer immediately before the power amplifier input.
EQUALIZER
AMPLIFIER
CONNECTIONS
TAPE RECORDER
CONNECTIONS
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INPUT OUTPUT
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PREAMPLIFIER
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