JL Audio 500/1v2 User Manual

10 | JL Audio - 500/1v2 Owner’s Manual
11
2) Parametric Bass Equalizer: The parametric
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frequency of the boost band as well as the
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control selects the bandwidth of the boost
around the center frequency. Lower numbers
pertain to wider bandwidths while higher
number pertain to narrower bandwidths.
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frequency of the boost bandwidth within
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select the filter frequency with a higher level
of precision, consult Appendix C: Chart A-4
QBHFPGUIJTNBOVBM5IFiBoostwDPOUSPM
determines how much boost (in dB) you are
adding to the bass signal. A range of 0 - 15dB
PGCPPTUJTBWBJMBCMF5IFiRemote Bass Portw
allows the connection of an optional remote
boost knob (the RBC-1) that can be mounted
in the front of the vehicle. This optional
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the amplifier when connected and bypasses the
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IMPORTANT
!
The “Advanced Bass Control” section will only
operate when the amplifier’s filter is activated
with the “Amp LP Filter” switch in the “12dB”
or “24dB” position. It will not work with this
switch in the “Off” position. This is to prevent
cascading the processing of multiple amplifiers
when configured in a master/Slave
arrangement as shown in Appendix D (page
18). If you are using an external active
crossover and would like to use the “Advanced
Bass Control” features, set the “Amp LP Filter”
switch on “12dB” and rotate the frequency
selection knob fully clockwise to the “200 Hz”
position. This will activate the “LF Boost” and
“Infrasonic Filter” controls without
significantly affecting the crossover point
selected by the external active crossover.
Subwoofer Output
MONO OUTPUT ONLY
e
nsing
O
n
SUBWOOFER OUTPUT
The 500/1v2 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 (500 watts x 1) 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 500/1v2 gives
you the freedom to use a variety of subwoofer
configurations that achieve final nominal
impedances between
1.5 – 4Ω (without sacrificing power output or
sound quality).
The operation of the R.I.P.S. circuitry is
entirely automatic and adjusts itself every time
the amplifier is turned on according to the lowest
impedance present at the speaker load. There are
no user controls to configure. The system
operates through multiple stages of impedance
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to the actual impedance of the speaker(s) you
connect to it.
IMPORTANT
!
If you connect a load higher than 4Ω nominal
to the 500/1v2, power will drop by half with
every doubling of impedance above 4Ω. If you
connect a load lower than 1.5Ω nominal to the
500/1v2, the amplifier protection circuitry
activates a “safe” mode which reduces amplifier
power to protect the circuitry from failure (the
yellow LED on the top of the amplifier will
light to indicate that this has happened). See
page 12 for details.
3) “Out Filter”: The preamp output is
filtered by a fully variable, active filter
incorporated into the output section
and is not affected by the bass control
processing selected for the amplifier. In
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b) 12 dB/octave or 24 dB/ octave filter slope by
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c) A filter cutoff frequency between 40 - 200
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UIFiFilter ControlwTXJUDI
This is completely independent of the
amplifier’s internal filter and allows the user to
match, stagger or overlap the subwoofer low-pass
filter frequency of the amplifier crossover with
the output filter’s frequency for precise control
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If you would like to select the filter frequency
with a higher level of precision, consult
Appendix C: Chart A-2 (page 16) of this manual.
CAUTION
!!
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. All “Slave” amplifiers should
have their switches set to “Low”. See Appendix
D (page 18) for details.
ADVANCED BASS CONTROL SECTION
The 500/1v2 includes a versatile bass
processing section consisting of two
primary components: a fully variable,
24 dB per octave infrasonic filter and a
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Infrasonic Filter
“Q” Center Freq. Boost (dB)
Advanced
Bass
Control
Infrasonic Freq. (Hz) Remote Bass Port
Mode
Bass EQ
Off
|
On
Off
|
On
15
18
22
30
45
55
60
0.5
0.7
1.1
1.6
2.7
4.3
20
25
30
40
60
75
80 0
+4
+10
+13
+15
1) “Infrasonic Filter”: The infrasonic filter is a
24 dB/octave high-pass filter, with a fully
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conserves amplifier power without audibly
affecting the quality of the sub-bass output. If
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be an audible effect, but one which may be
desirable for SPL competition purposes or curve
shaping of a bottom-heavy system. With ported
enclosures, the use of the infrasonic filter is
highly recommended to protect the speaker(s)
from excessive excursion below box tuning.
With sealed enclosures, the use of the filter is
less necessary, but can still help protect the
speaker system. If you would like to select the
infrasonic filter frequency with a higher level of
precision, consult Appendix C: Chart A-3 (page
17) of this manual. The infrasonic filter can be
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all signal from flowing through the circuit.

JL Audio 500/1v2 Specifications

General

Brand	JL Audio
Model	500/1v2
Category	Amplifier
Language	English