Accuphase E-350 Instruction Manual page 11

Playback with external preamplifi er
You can set the EXT PRE button to ON to separate the preamplifi er and power amplifi er of the E-350, and use an external
preamplifi er or A/V amplifi er with the power amplifi er of the E-350. An example of such a connection is shown below.
● Connect the output of the external preamplifi er to the POWER IN jacks of the E-350.
● Only the power amplifi er of the E-350 is used in this case. The preamplifi er is inactive. Input
source switching, volume adjustment, and other preamplifi er functions must be performed
at the external equipment.
Note:
If you set the EXT PRE button to OFF, the E-350 will
operate normally (using the internal preamplifi er).
Source component
CD player
Bi-amping connection example
Bi-amping means to drive the low frequency range and high frequency range of a loudspeaker with separate
amplifi ers, for higher sound quality.
● A loudspeaker with built-in crossover network and separate LOW and HIGH input terminals
is required.
● In addition to the E-350, use one more power amplifi er of similar gain.
All Accuphase power amplifi ers have the same gain (28 dB).
Connections for example shown in illustration
E-350 speaker outputs
Other power amplifi er
Note:
Do not set the EXT PRE button to
ON while the power amplifi er is being
used. Otherwise the LOW driver (the
driver connected to the power amplifi er
of the E-350) of the loudspeaker will
be cut off.
Source component
CD player
Front panel
Set EXT PRE button to
LED lit)
● Preamplifi er and power amplifi er sections are
separated.
External preamplifi er
or A/V amplifi er etc.
LOW terminals of speaker
HIGH terminals of speaker
Front panel
Set EXT PRE button to ("EXT PRE"
LED out)
● Preamplifi er and power amplifi er sections are not
separated.
Analog
output
From PRE OUT
Left speaker Right speaker
("EXT PRE"
To POWER IN
Audio cable
with plugs
Preamplifi er output
Left speaker Right speaker
LOW HIGH
LOW
terminals
terminals terminals
To LOW terminals
of speakers
To HIGH terminals
INPUTS
Audio cable with plugs
Power amplifi er
HIGH
terminals
of speakers
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