JL Audio Slash v2 300/2V2 Owner's Manual page 6

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 300/2v2 has been designed for
bridging of its channel pairs without the need for
input inversion adaptors.
Speaker Outputs
Amplifier Input Section
Input Voltage Input Sens.
Low | High
Left Right
Bridged
Left Ch. Right Ch.
To bridge a pair of channels, use the
"Left +" and "Right –" speaker connectors
only (the "Left –" and "Right +" remain
unused). When bridged, the 300/2v2 will
deliver optimum power into a 3 - 8Ω load.
Operating a bridged 300/2v2 into a load
lower than 3Ω is not recommended.
Because a bridged pair of channels requires
that both channels receive input, you need to
connect both left and right RCA inputs to the
source unit. Connection of only one RCA input
will result in reduced power output, increased
distortion and can cause the amplifier to
overheat. Do not do this! Instead, use a
"Y-Adaptor" like the JL Audio ECS model
XB-CLRAICY-1F2M to split the mono signal into
both left and right RCA inputs to split the mono
signal into both left and right RCA inputs.
Why a mono signal? If you are bridging a
pair of channels and use a stereo input, the only
information that will reach the amplifier stage
is the common-phase portion of the signal. This
may be useful for passively deriving a center-
channel signal, but is not going to give you a
defined left or right channel. If you are looking
to reproduce a single channel's signal, you must
split the mono signal with a "Y-Adaptor" and
connect it to both left and right RCA inputs for
the bridged channel pair.
10 | JL Audio - 300/2 Owner's Manual
v2
status indiCator ligHts /
ProteCtion CirCuitrY
There are three status indicator lights on the
top of the amplifier. These are as follows:
1) "Power" (Green): lights to indicate that the
amplifier is turned on and operating normally.
2) "Thermal" (Red): lights to indicate that
the amplifier has exceeded its safe operating
temperature, putting the amplifier into a self-
protection mode, which reduces the power
output of the amplifier. The red light will shut
off and the amplifier will return to normal,
full-power operating mode if the heat sink
temperature drops back to a safe level.
3) "Low Ω" (Amber): lights to indicate that the
impedance of the speaker load connected
to the amplifier is lower than the optimum
impedance load range for the amplifier. When
this light is on, a protection circuit engages
and reduces the power output of the amplifier.
The amber indicator will also light when a
short-circuit is detected in the speaker wiring
(this can be a short between the positive and
negative speaker wires or between either
speaker wire and the vehicle chassis).
There is only one condition that will shut
down an undamaged 300/2v2 completely... If
battery voltage drops below 10 volts, the entire
amplifier will shut itself off. The green "Power"
indicator on the top of the amplifier will turn
off when this occurs. The amplifier will turn
back on when voltage climbs back above 10 volts.
This may happen in a rapid cycle when bass-
heavy program material causes a weak charging
system to dip below 10 volts momentarily. If this
is happening in your system, have your charging
system inspected to make sure it is working
properly.
For information on troubleshooting this
amplifier, refer to Appendix D (page 14).
serViCing Your Jl audio amPliFier
If your amplifier fails or malfunctions, please
return it to your authorized JL Audio dealer so
that it may be sent in to JL Audio for service.
There are no user serviceable parts or fuses inside
the amplifier. The unique nature of the circuitry
in the JL Audio amplifiers requires specifically
trained service personnel. Do not attempt
to service the amplifier yourself or through
unauthorized repair facilities. This will not only
void the warranty, but may result in the creation
of more problems within the amplifier.
If you have any questions about the installation or
setup of the amplifier not covered in this manual,
please contact your dealer or technical support.
Jl audio technical support:
(954) 443-1100
9:00 AM – 5:30 PM (Eastern Time Zone)
Monday - Friday
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