JL Audio XD600/6 - Handbuch (Seite 10)

10 | JL Audio - XD600/6 Owner’s Manual
sPeaker outPuts
The XD600/6’s speaker outputs are designed
to accept 16 AWG - 8 AWG wire. To connect the
speaker wires to the amplifier, first back out the
set screws on the top of the terminal block, using
the supplied 2.5 mm hex wrench. Strip 1/2 inch
(12 mm) of insulation from the end of each wire
and insert the bare wire into the terminal block,
seating it firmly so that no bare wire is exposed.
While holding the wire in place, tighten the set
screw firmly, taking care not to strip the head of
the screw.
Each pair of the XD600/6’s channels are
designed to deliver power into speaker loads equal
to or greater than 2 ohms when using a “stereo”
configuration and speaker loads equal to or greater
than 4 ohms when using a “bridged” configuration.
Speaker loads below 2 ohms nominal
per channel (or 4 ohms bridged) 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 XD600/6 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.
When a pair of channels are bridged, they
will deliver 200W x 1 into a 4 ohm load or
150W 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 the amplifier to overheat.
Do not do this!
When a pair of the XD600/6’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:
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 XD600/6’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 XD600/6’s channels to drive left
channel speakers only and the other pair of
the XD600/6’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
XD600/6’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 XD600/6’s
channels to drive a subwoofer system or a
summed mono center channel.