Slave (a): slave (b) – JL Audio 500/1v2 User Manual

Page 10

18 | JL Audio - 500/1

Owner’s Manual

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.

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.

Additional amplifiers may be added to this

“Master/Slave” configuration following the same
procedure as in step 4.

Once you match the input sensitivities of

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
used, it need only be connected to the “Master”
amplifier to control all the amplifiers in the
“Master/Slave” chain.

Reference the diagram showing a “Master/

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.

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.

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.

MASTER:

+12VDC

Ground Remote

Preamp Output Section

Infrasonic Filter

“Q”

Center Freq.

Boost (dB)

Amp LP Filter

Advanced

Bass

Control

Amplifier Input Section

Subwoofer Output

MONO OUTPUT ONLY

Left Output

Right Output

Left Ch.

Right Ch.

Filter Freq. (Hz)

Infrasonic Freq. (Hz)

Remote Bass Port

Full Range | Amp Filter | Out Filter

Output Mode

Filter Slope

Mode

Mode | Slope

Input Voltage

Input Sens. Signal Sensing

12dB | 24dB

Filter Mode

LP | HP

Bass EQ

Off | On

Off | 12dB | 24dB

Low | High

Off | On

100

200

100

200

0.5

0.7

1.1

1.6

2.7

4.3 20

+10

+13

+15

500/1

Monoblock Subwoofer Amplifier

+12VDC

Ground Remote

Preamp Output Section

Infrasonic Filter

“Q”

Center Freq.

Boost (dB)

Amp LP Filter

Advanced

Bass

Control

Amplifier Input Section

Subwoofer Output

MONO OUTPUT ONLY

Left Output

Right Output

Left Ch.

Right Ch.

Filter Freq. (Hz)

Infrasonic Freq. (Hz)

Remote Bass Port

Full Range | Amp Filter | Out Filter

Output Mode

Filter Slope

Mode

Mode | Slope

Input Voltage

Input Sens. Signal Sensing

12dB | 24dB

Filter Mode

LP | HP

Bass EQ

Off | On

Off | 12dB | 24dB

Low | High

Off | On

100

200

100

200

0.5

0.7

1.1

1.6

2.7

4.3 20

+10

+13

+15

500/1

Monoblock Subwoofer Amplifier

+12VDC

Ground Remote

Preamp Output Section

Infrasonic Filter

“Q”

Center Freq.

Boost (dB)

Amp LP Filter

Advanced

Bass

Control

Amplifier Input Section

Subwoofer Output

MONO OUTPUT ONLY

Left Output

Right Output

Left Ch.

Right Ch.

Filter Freq. (Hz)

Infrasonic Freq. (Hz)

Remote Bass Port

Full Range | Amp Filter | Out Filter

Output Mode

Filter Slope

Mode

Mode | Slope

Input Voltage

Input Sens. Signal Sensing

12dB | 24dB

Filter Mode

LP | HP

Bass EQ

Off | On

Off | 12dB | 24dB

Low | High

Off | On

100

200

100

200

0.5

0.7

1.1

1.6

2.7

4.3 20

+10

+13

+15

500/1

Monoblock Subwoofer Amplifier

Connect Master 500/1 Preamp Output to Slave A 500/1 Input

Connect Slave A 500/1 Preamp Output to Slave B 500/1 Input

Connect Master 500/1 Input to Signal Source

The Master amplifier’s

“Advanced Bass Control” section

is active and affects all three

amplifiers equally.

The last Slave amplifier’s

“Advanced Bass Control”

section, AMP LP Filter and

“Preamp Output”

are inactive.

This Slave amplifier’s

“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

next Slave amplifier.

SLAVE (A):

SLAVE (B):