JL Audio XD800/8v2 Manuel D'utilisation page 4

turn-on oPtions
The XD800/8v2 can be switched on and off
using one of three methods, determined by the
position of the amplifier's "Turn-On Mode"
switch. Please read these options and decide
which is best suited for your specific system.
1) +12V remote turn-on lead
2) Signal-sensing turn-on circuit.
3) DC offset-sensing turn-on circuit
Remote
Turn-On
Level
Mode
Mode
Rem. | O set | Signal All | 5- 8 | 7&8
Input Voltage Input Mode
Low | High 2 Ch. | 4 Ch. | 8 Ch.
H. 3, CH. 5 & CH. 7
H. 4, CH. 6 & CH. 8
CH. 1 CH. 3 CH. 5 CH. 7 (L)
CH. 3
CH. 4
CH. 7
CH. 8
CH. 2 CH. 4 CH. 6 CH. 8 (R)
channel
+12 V Remote Turn-On: This is the preferred
method for turning the amplifier on/off. The
amplifier will turn on when +12 V is present at
its "Remote" input and turn off when +12 V is
switched off. This +12V remote turn-on signal is
typically controlled by a source unit's remote
turn-on wire. The XD800/8v2's "Remote" turn-
on connector will accept 18 AWG – 12 AWG
wire. To connect the remote turn-on wire to
the amplifier, first back out the set screw on the
top of the terminal block, using the supplied 2.5
mm hex wrench. Strip 1/2 inch (12mm) of wire
and insert the bare wire into the terminal block,
seating it firmly so that no bare wire is exposed.
While holding the wire in the terminal, tighten
the set screw firmly, taking care not to strip the
head of the screw and making sure that the wire
is firmly gripped by the set screw.
If a source unit does not have a dedicated
remote turn-on output, consider one of the
following alternative turn-on options:
These methods are useful when a conventional
+12 V remote turn-on signal is not available in a
system. These allow you to operate the amplifier
without having to locate a remote turn-on lead at
the source unit, which can be very useful when
interfacing the amplifier with OEM (factory)
audio systems that do not use conventional +12 V
turn-on leads.
6 | JL Audio - XD800/8v2 Owner's Manual
Depending on the characteristics of the audio
signal, one of the following methods may work
better than the other. We recommend trying DC
Offset-Sensing first as it does not require a long
delay to turn the system off after the signal is
shut off.
DC Offset-Sensing: The amplifier will turn on
and off by detecting the presence of a very small
DC signal (offset) that is typical in the audio
output of most OEM (factory) source units and
amplifiers. The amplifier will turn on and off in
reaction to the presence or absence of this DC
Offset. The sensitivity of this circuit is designed
CH. 1 & 2 CH. 3 & 4 CH. 5 & 6
Input Input
+12 VDC
Sens. for high-level (speaker level) signals, not for low- Sens.
level (preamp level) signals. The circuit monitors
Filter Mode Filter Mode
the signal at the Channel 1 input only.
O | HP | LP O | HP | LP
Signal-Sensing: The amplifier will turn on
Filter Freq. (Hz) Filter Freq. (Hz)
and off by detecting the presence of a full-range
audio signal at its Channel 1 input. After several
minutes of no signal, the amplifier will shut off.
8 Channel Amplifier
The sensitivity of this circuit is designed for
CH. 1 CH. 2 CH. 3 CH. 4
(L) (R) (L) (R)
high-level (speaker level) signals, not for low-level
(preamp level) signals. The circuit is tuned to
react to signals at mid-range frequencies. This
prevents false switching from signals created by
moving loudspeakers that are in parallel with the
amplifier's input signal.
+12 VDC Ground Remote
In signal and DC sensing applications, the
amplifier's "Remote" turn-on terminal becomes
a remote turn-on output. This allows the
XD800/8v2 to turn on other amplifiers in the
audio system that do not have signal sensing.
+12 VDC Ground Remote
inPut seCtion
The XD800/8v2's input section allows
you to send signals to the amplifier
section through the use of two, four or
eight differential-balanced inputs.
Input connections are via four pairs of
traditional RCA-type jacks.
(L)
(R)
CH. 7 & 8
Input Input
Ground Remote
Sens. Sens.
8 Channel Amplifier
Filter Mode Filter Mode
O | HP | LP O | HP | LP
Filter Freq. (Hz) Filter Freq. (Hz)
Turn-On
Mode
Rem. | O set | Signal
Input Voltage
CH. 5 CH. 6 CH. 7 CH. 8
(L) (R) (L) (R)
Low | High
INPUT MODES:
2 Ch. Input 1 feeds CH. 1, CH. 3, CH. 5 & CH. 7
Input 2 feeds CH. 2, CH. 4, CH. 6 & CH. 8
CH. 1 CH. 3 CH. 5
4 Ch. Input 1 feeds CH. 1 & CH. 3
If you wish to send eight discrete channels into
Input 2 feeds CH. 2 & CH. 4
Input 5 feeds CH. 5 & CH. 7
Input 6 feeds CH. 6 & CH. 8 the XD800/8v2, simply use all eight inputs and set
CH. 2 CH. 4 CH. 6
8 Ch. Each input feeds its
the "Input Mode" switch in the "8 Ch." position.
corresponding output channel
If you wish to feed all eight channels by using
only four channels of input, set the "Input Mode"
switch to "4 Ch." and use only the inputs to
channels 1, 2, 5 and 6. In this mode, input 1 will
feed channels 1 and 3, input 2 will feed channels
3 and 4, input 5 will feed channels 5 and 7 and
input 6 will feed channels 6 and 8.
If you wish to use only two channels of input
to deliver signal to all eight amplifier channels,
set the "Input Mode" switch to "2 Ch." and
use only the inputs to channels 1 and 2. In this
mode, input 1 will feed all the odd-numbered
channels (1, 3, 5 and 7) and input 2 will feed all
(L) the even-numbered channels (2, 4, 6 and 8).
8 Channel Amplifier
(R)
INPUT MODES:
2 Ch. Input 1 feeds CH. 1, CH. 3, CH. 5 & CH. 7
Input 2 feeds CH. 2, CH. 4, CH. 6 & CH. 8
CH. 1&2 CH. 3&4
4 Ch. Input 1 feeds CH. 1 & CH. 3
INPUT SECTION
Input 2 feeds CH. 2 & CH. 4
Input 5 feeds CH. 5 & CH. 7
Input 6 feeds CH. 6 & CH. 8
8 Ch. Each input feeds its
corresponding output channel
+12 VDC Ground Remote
input Voltage range:
input voltages can be accommodated by the
XD800/8v2's input section (200mV – 8V). This
wide range is split up into two sub-ranges,
accessible via the "Input Voltage" switch:
Remote
Level
Control
CH. 1
(L)
CH. 1&2 CH. 3&4 CH. 5&6 CH. 7&8
INPUT SECTION
INPUT MODES:
2 Ch. Input 1 feeds CH. 1, CH. 3, CH. 5 & CH. 7
Input 2 feeds CH. 2, CH. 4, CH. 6 & CH. 8
4 Ch. Input 1 feeds CH. 1 & CH. 3
Remote
CH. 1 & 2 Input 2 feeds CH. 2 & CH. 4 CH. 3 & 4
Level Input
Input 5 feeds CH. 5 & CH. 7
Mode Sens.
Input 6 feeds CH. 6 & CH. 8
All | 5- 8 | 7&8
8 Ch. Each input feeds its
corresponding output channel
+12 VDC Input Mode Ground Remote Filter Mode Filter Mode
switch selects an input sensitivity range between
2 Ch. | 4 Ch. | 8 Ch. O | HP | LP O | HP | LP
200mV and 2V for all input channels. This means
Filter Freq. (Hz)
that the "Input Sens." rotary control for each
(L)
CH. 7
channel section will operate within that voltage
window. If you are using an aftermarket source
CH. 8 (R)
unit, with conventional preamp-level outputs, this
CH. 1 CH. 2
(L) (R)
is most likely the position that you will use
switch selects an input sensitivity range between
800mV and 8V for all input channels. This is
useful for certain high-output preamp level
Remote Input
signals as well as speaker-level output from source
Input Level Mode Mode Status
Voltage Switch Switch LED
units and small amplifiers. To use speaker-level
(pg. 7) (pg. 9) (pg. 7) (pg. 11)
Turn-On
sources, splice the speaker output wires of the
Mode
(pg. 6)
source unit or small amplifier onto a pair of RCA
cables or plugs or use the JL Audio ECS Speaker
Wire to RCA adaptor (XD-CLRAIC2-SW).
Remote
Turn-On
Level
Mode
Mode
Rem. | O set | Signal All | 5- 8 | 7&8
Remote
Level
Input Voltage Input Mode
Control
with the XD800/8v2. If you find that the output
cannot be reduced sufficiently with a direct
Low | High 2 Ch. | 4 Ch. | 8 Ch.
CH. 1 CH. 2
speaker level signal applied to the amplifier and
(L) (R)
CH. 5&6 CH. 7&8
CH. 1 CH. 3 CH. 5 CH. 7 Bridged (L) the "Input Voltage" switch in its "High" position,
you may use a "line output converter" or voltage
(R)
CH. 2 CH. 4 CH. 6 CH. 8
divider to reduce the signal level.
Input Voltage Range: A wide range of signal
"Low": for preamp level signals
"High": for speaker level signals
Remote
CH. 1 & 2
Turn-On
Level
Mode
Mode
CH. 2 CH. 3 CH. 4 CH. 5
Rem. | O set | Signal All | 5 - 8 | 7&8
(R) (L) (R) (L)
Bridged Bridged Bridged
Input Voltage Input Mode Filter Mode
Low | High 2 Ch. | 4 Ch. | 8 Ch. O | HP | LP
(L)
CH. 1 CH. 3 CH. 5 CH. 7
CH. 5 & 6 CH. 7 & 8
Input Input
Sens. Sens.
CH. 2 CH. 4 CH. 6 CH. 8 (R)
CH. 1
Filter Mode Filter Mode
The "Low" position on the "Input Voltage"
O | HP | LP O | HP | LP
Filter Freq. (Hz) Filter Freq. (Hz)
CH. 3 CH. 4 CH. 5 CH. 6 CH. 7
(L) (R) (L) (R) (L)
The "High" position on the "Input Voltage"
Ch. 1 & 2 Ch. 1 & 2 Filter Ch. 3 & 4 Ch. 3 & 4 Filter Ch. 5 & 6
Filter Mode Frequency Filter Mode Frequency Filter Mode
Selection Selector Selection Selector Selection
(pg. 8) (pg. 8) (pg. 8) (pg. 8) (pg. 8)
Ch. 1 & 2 Input Ch. 3 & 4 Input
Sensitivity Control Sensitivity Control
(pg. 8) (pg. 8)
CH. 1 & 2 CH. 3 & 4 CH. 5 & 6
Input Input
Sens. Sens.
Line Output Converters are usually not needed
Filter Mode Filter Mode Filter Mode
O | HP | LP O | HP | LP O | HP | LP
Filter Freq. (Hz) Filter Freq. (Hz)
CH. 3 CH. 4 CH. 5 CH. 6
(L) (R) (L) (R)
Bridged Bridged
CH. 1 CH. 2 CH. 3 CH. 4 CH. 5
(L) (R) (L) (R) (L)
7
Input
Sens.
CH. 6
(R)
Filter F
Input
Sens.
(L)
Filter Fre
C
Ch.
Fr
S
Ch. 5 & 6 Inpu
Sensitivity Cont
(pg. 8)
Input
Sens.
Filter Freq. (Hz)
CH. 7
(L)
Brid
CH. 6
(R)