Speaker Outputs - JL Audio Slash v2 300/2V2 Owner's Manual

Depending on the speaker system and the
vehicle, different filter slopes may be required to
produce a smooth transition between the sound
of different speakers in the system. Experiment
to find the slope which best matches the acoustic
requirements of the system. The sharper "24dB"
setting will do a better job of protecting small
speakers with limited power handling. The
Ground Remote
shallower "12dB" octave setting allows for greater
energy overlap with the rest of the speaker
system. In some cases, this results in better
overall response and sound quality.
300 / 2
v2
l Full-Range Amplifier
3) "Freq. Range" Control: When thrown to
the right, this switch multiplies the cutoff
frequency selected by the rotary "Filter Freq.
(Hz)" control by a factor of 10. In the "x1"
position, the range of the rotary control is
50 - 500 Hz (as marked). In the "x10"
position, the range of the rotary control is
500 Hz - 5 kHz (5000 Hz).
4) "Filter Freq. (Hz)" The filter frequency
markings surrounding this rotary control
+12VDC Ground Remote
are for reference purposes and are generally
accurate to within 1/3 octave or better. If you
would like to select the filter cutoff frequency
with a higher level of precision, consult the
300/2
v2
chart in Appendix B (page 13) of this manual.
Two-Channel Full-Range Amplifier
8 | JL Audio - 300/2 Owner's Manual
v2
PreamP outPut seCtion
The 300/2v2 incorporates a flexible preamp
output section, so that additional amplifiers can
be added to the system. This pre-amp output
can be configured three different ways using the
switch labeled "Output Mode" in the "Preamp
Output Section".
Preamp Output Section Amp Filter Controls
Output Mode Freq. Range Filter Slope
Full Range | Low-Pass | High-Pass x1 | x10 12dB | 24dB
95
Filter Mode
75 130
60 200
Off | LP | HP
50 500
Left Output Right Output Filter Freq. (Hz)
1) "Full-Range": The preamp output delivers the
same signal that is connected to the 300/2v2's
Amplifier Inputs.
2) "Low-Pass": The preamp output delivers
the same signal that is connected to the
300/2v2's Amplifier Inputs with Low-Pass
filtering applied to it at the "Filter Freq."
Preamp Output Section Amp Filter Controls
and "Filter Slope" selected in the "Amplifier
Output Mode Freq. Range
Filter" section. This mode can be useful
Full Range | Low-Pass | High-Pass x1 | x10
for feeding a subwoofer amplifier when the
95
75 130
300/2v2 is being used to drive the main
60
speaker system.
50 500
Left Output Right Output Filter Freq. (Hz)
3) "High-Pass": The preamp output delivers
the same signal that is connected to the
300/2v2's "Amplifier Input Section" with
High-Pass filtering applied to it at the "Filter
Freq." and "Filter Slope" selected in the
"Amplifier Filter" section. This mode can be
useful for feeding a second satellite amplifier
when the 300/2v2 is being used to drive the
main speaker system.
Note: The signal level of the "Preamp Output"
is always low level regardless of the voltage
applied to this amplifier's inputs and the
setting chosen on this amplifier's "Input
Range" switch. A JL Audio amplifier receiving
signal from this preamp output should have
its "Input Range" switch set to "Low".

sPeaker outPuts

The 300/2v2 employs JL Audio's exclusive
Regulated, Intelligent Power Supply (R.I.P.S.)
design. This sophisticated power supply allows
the amplifier to produce its optimum power (300
watts) over a wide range of speaker impedances.
Unlike conventional amplifiers that require a
specific impedance to produce optimum power,
the R.I.P.S.-equipped 300/2v2 gives you the
Amplifier Input Section Speaker Outputs
freedom to use a variety of speaker configurations
Input Voltage Input Sens.
that achieve final impedances between 1.5 – 4Ω
Low | High
nominal per channel (without sacrificing power
output or sound quality).
Left Right
The operation of the R.I.P.S. circuitry is
entirely automatic and adjusts itself every time Bridged
Left Ch. Right Ch.
the amplifier is turned on according to the
lowest impedance present at the speaker outputs.
There are no user controls to configure. The
system operates through multiple stages of
impedance optimization, choosing the stage
most appropriate to the actual impedance of the
speakers you connect to it.
Amplifier Input Section Speaker Outputs
Filter Slope Input Voltage Input Sens.
12dB | 24dB Low | High
Filter Mode
200
Left Right
Off | LP | HP
Bridged
Left Ch. Right Ch.
!
IMPORTANT
If you connect a load higher than 4Ω nominal
per channel in stereo mode (or 8Ω in bridged
mode), power will drop by half with every
doubling of impedance above 4Ω stereo / 8Ω
mono. If you connect a load lower than 1.5Ω
nominal per channel in stereo mode (or 3Ω in
bridged mode, the amplifier protection
circuitry activates a "safe" mode which reduces
amplifier power to protect the circuitry from
failure (the yellow "Low Ω" LED lights to
indicate that this has happened). See page 10
for details.
!
IMPORTANT
Speaker loads below 1.5Ω nominal per channel
in stereo or 3Ω nominal in bridged mode are
not recommended and may cause the amplifier
output to distort excessively.
9