Master/Slave Configurations - JL Audio 500/1 v2 Owner's Manual

aPPendix d:

master/slave Configurations

With the flexible on-board crossovers and
processing incorporated into the 500/1v2, it
is possible to connect multiple 500/1v2's in a
"Master/Slave" configuration, with each amplifier
driving its own speaker system but controlled by
the processing and filtering of only one amplifier.
This is very useful when driving multiple
subwoofers with multiple amplifiers.
To create a Master/Slave configuration, first
determine which amplifier will be the "Master"
amplifier and connect the main input signal to
that amplifier (from the source unit or from an
outboard processor). This amplifier's "Amp LP
Filter" section and "Advanced Bass Control"
features will process the signal for the "Slave"
amplifier or amplifiers.
MASTER:
The Master amplifier's
+12VDC Ground Remote
"Advanced Bass Control" section
is active and affects all three
amplifiers equally.
500/1
Monoblock Subwoofer Amplifier
SLAVE (A):
This Slave amplifier's
+12VDC Ground Remote
"Advanced Bass Control" section
and AMP LP Filter are inactive,
but the Full-Range (pass-
through) feature of its "Preamp
Output" feeds the input of the 500/1
Monoblock Subwoofer Amplifier
next Slave amplifier.
SLAVE (B):
The last Slave amplifier's
+12VDC Ground Remote
"Advanced Bass Control"
section, AMP LP Filter and
"Preamp Output"
are inactive.
500/1
Monoblock Subwoofer Amplifier
18 | JL Audio - 500/1 Owner's Manual
v2
Here is the procedure for implementing a
"Master/Slave" configuration:
1) Set the "Master" amplifier's "Output Mode"
switch to the center "Amp Filter" position.
This will send a parallel, mono-summed signal
from the "Master" amplifier's "Amp LP Filter"
section to its preamp outputs.
2) Connect an RCA cable from the "Master"
amplifier's preamp outputs to the main input
of the first "Slave" amplifier. Set the "Slave"
amplifier's "Amp LP Filter" to the "Off"
position. This will defeat the LP filter and the
bass processing of this "Slave" amplifier.
Preamp Output Section
Infrasonic Filter
Output Mode Filter Slope Mode
Full Range | Amp Filter | Out Filter 12dB | 24dB Off | On
65 30
Filter Mode
55 80 22 45
45 100 18 55
v2
LP | HP
40 200 15 60
Left Output Right Output Filter Freq. (Hz) Infrasonic Freq. (Hz)
Connect Master 500/1 Preamp Output to Slave A 500/1 Input
Preamp Output Section
Infrasonic Filter
Output Mode Filter Slope Mode
Full Range | Amp Filter | Out Filter 12dB | 24dB Off | On
65 30
Filter Mode
55 80 22 45
45 100 18 55
v2
LP | HP
40 200 15 60
Left Output Right Output Filter Freq. (Hz) Infrasonic Freq. (Hz)
Connect Slave A 500/1 Preamp Output to Slave B 500/1 Input
Preamp Output Section
Infrasonic Filter
Output Mode Filter Slope Mode
Full Range | Amp Filter | Out Filter 12dB | 24dB Off | On
65 30
Filter Mode
55 80 22 45
45 100 18 55
v2
LP | HP
40 200 15 60
Left Output Right Output Filter Freq. (Hz) Infrasonic Freq. (Hz)
3) The input sensitivity of the two amplifiers
needs to be adjusted independently. To
properly calibrate the amplifiers for
maximum, identical, clean output, please
refer to Appendix A (page 14). After using this
procedure, you can then adjust the level of the
amplifiers by adjusting the input sensitivities
downward, if the amplifiers require attenuation
to achieve the desired system balance. If the
input sensitivities are adjusted, the amplifiers
must be recalibrated to ensure identical power
output levels.
Note: The "Input Range" switch on all "Slave"
amplifiers needs to be set to "Low", even if
the "Master" amplifier is high voltage and its
switch is set to "High". All signals passed out
of the preamp outputs of the amplifier are
compatible with the "Low" setting on the "Input
Range" control.
Amp LP Filter Amplifier Input Section
"Q" Center Freq. Boost (dB)
1.6 40 +10
Mode | Slope Input Voltage Input Sens.
1.1 2.7 30 60 +4 +13
0.7 25 75
Off | 12dB | 24dB Low | High
0.5 4.3 20 80 0 +15
65
Bass EQ
55 80
Advanced
Bass 45 100
Control
Off | On
40 200
Remote Bass Port Filter Freq. (Hz) Left Ch. Right Ch.
Connect Master 500/1 Input to Signal Source
Amp LP Filter Amplifier Input Section
"Q" Center Freq. Boost (dB)
1.6 40 +10
Mode | Slope
Input Voltage Input Sens.
1.1 2.7 30 60 +4 +13
0.7 25 75
Off | 12dB | 24dB Low | High
0.5 4.3 20 80 0 +15
65
Bass EQ
55 80
Advanced
Bass
45 100
Control
Off | On
40 200
Remote Bass Port Filter Freq. (Hz) Left Ch. Right Ch.
Amp LP Filter Amplifier Input Section
"Q" Center Freq. Boost (dB)
1.6 40 +10
Mode | Slope Input Voltage Input Sens.
1.1 2.7 30 60 +4 +13
0.7 25 75
Off | 12dB | 24dB Low | High
0.5 4.3 20 80 0 +15
65
Bass EQ
55 80
Advanced
Bass
45 100
Control
Off | On
40 200
Remote Bass Port Filter Freq. (Hz) Left Ch. Right Ch.
The "Signal Sensing" turn-on feature will not
work on "Slave" amplifiers, but "Slave" amplifiers
can be turned on and off by a "Master" amplifier
operating in signal sensing turn-on mode.
Simply connect the "Master" amplifier's
"Remote" connection, to the "Slave" amplifier(s)
"Remote" connection(s).
Do not increase the "Input Sens." setting for
any amplifier in the system beyond the maximum
level established during the procedure outlined
in Appendix A (page 14). Doing so will result in
audible distortion and possible speaker damage.
4) If you would like to run a third amplifier in
"Slave" configuration, select the "Full-Range"
position on the "Output Mode" switch of the
first "Slave" amplifier. Then, connect an RCA
cable from the first "Slave" amplifier's preamp
outputs to the second "Slave" amplifier. As
you did with the first "Slave" amplifier, set the
second "Slave" amplifier's "Amp LP Filter" to
the "Off" position. Then, calibrate the third
amplifier's "Input Range" and "Input Sens."
controls in the same manner as you did for the
second amplifier.
Subwoofer Output
Signal Sensing
Additional amplifiers may be added to this
"Master/Slave" configuration following the same
Off | On
procedure as in step 4.
Once you match the input sensitivities of
MONO OUTPUT ONLY
all the amplifiers, you can use the "Master"
amplifier's "Amp LP Filter" and "Advanced
Bass Control" features to control the "Slave"
amplifier(s). If the remote bass control (RBC-1) is
Subwoofer Output
used, it need only be connected to the "Master"
Signal Sensing
amplifier to control all the amplifiers in the
Off | On
"Master/Slave" chain.
Reference the diagram showing a "Master/
MONO OUTPUT ONLY
Slave" configuration with one "Master" (top
amplifier) and two "Slave" amplifiers. Switches
and controls that are defeated in the "Slave"
amplifiers are printed in gray.
Subwoofer Output
Signal Sensing
Off | On
MONO OUTPUT ONLY
19