Owner's Manual
Table Of Contents
SPEAKER OUTPUTS
The M4300's speaker outputs are designed to
accept
16
AWG
- 8 AWG wire.
Each pair ofthe M4300's channels are
designed to deliver power into speaker loads equal
to or greater
than
2
ohms
per channel when using
a "stereo" configuration
and
speaker loads equal
to or greater
than
4
ohms
per bridged pair
of
channels when using a "bridged" configuration.
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DIMPORTANTI
When
a
pair
of
channels
are
bridged,
they
will
deliver
lS0W
x 1
into
a 4
ohm
load
or
90W
x 1
into
an
8
ohm
load.
Operating
a
pair
of
bridged
channels
into
a
load
lower
than
4
ohms
is
not
recommended.
Because a bridged
pair
of
channels requires
that
both
channels receive input, you need to connect
both
left
and
right inputs to the source unit.
Connection
of
only one input
will
result
in
reduced
power output, increased distortion
and
can cause
theamplifier to overheat.
Do
not
do this!
••••
~
.
I Bridged_ (min.
40),
DIMPORTANTI
••••
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When
a pair
of
the M4300's channels are
operating
in
bridged mode, the output will be in
mono (only one channel). This
mono
channel
can contain right channel only information,
left channel only information or the
sum
of
the information from both the right
and
left
channels. In order to achieve one
of
these options,
configure the inputs to that pair
of
channels in
one
of
these two ways:
Speaker
loads below 2
ohms
nominal
per
channel
are
not
recommended
and
may
cause
the
amplifier
to
initiate
a
protection
mode
which reduces
power
output.
BRIDGING CONSIDERATIONS
Bridging
is
the practice
of
combining the
output
of
two amplifier channels to drive a single
load.
When
bridged, each channel produces
signals
of
equal magnitude, but opposite polarity.
The
combined output
of
the two channels
provides twice the output voltage available from a
single channel. The M4300 has been designed for
bridging
of
its channel pairs without the need for
input inversion adaptors.
To
bridge a pair
of
channels, use the
"Left
+"
and
"Right
-"
speaker connectors only
(the "Left
-"
and
"Right
+"
remain unused).
When bridged, each channel will deliver
optimum
power into a 4
ohm
load.
.JL
AUDIO
M4300
1)
Left
Channel
Only
or
Right
Channel
Only
Information:
If
you wish to send a left-only
or right-only signal to a pair
of
the M4300's
channels, use a "Y-Adaptor" to split the single
channel signal into both left
and
right
RCA
inputs. This option
is
useful when using a pair
of
the M4300's channels to drive left channel
speakers only and the other
pair
of
the M4300's
channels to drive right channel speakers only.
2) Left
+
Right
Channel
Information:
When
bridged
and
fed by a stereo input, a
pair
of
the M4300's channels will automatically
combine the left
and
right channels into a
summed
mono (left + right) channel. This
option
is
useful when using a pair
of
the
M4300's channels to drive a subwoofer system
or a
summed
mono center channel.
DIMPORTANTI
If
you
plan
to use
the
"Pre-Outs"
to
feed
a stereo amplifier,
you
must
connect
a
stereo
signal
to
the
input
of
the
amplifier.
A
mono
signal
into
the
amplifier
will
result
in
a
mono
signal
out
of
the
preamp
output
.
8