Bedienungsanleitung JL Audio M600 (Seite 4 von 11) (Englisch)

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6 | JL Audio - M600/6 Owner’s Manual

INPUT SECTION

The M600/6’s input section allows you to send

signals to the amplifier section through the use

of two, four or six differential-balanced inputs.

Input connections are via up to three pairs of

traditional RCA-type jacks.

If you wish to send six discrete channels into

the M600/6, simply use all six inputs and set the

“Input Mode” switch in the “6 Ch.” position.

If you wish to feed all six channels by using

only four channels of full-range input, set the

“Input Mode” switch in the to “4 Ch.” and use

only the inputs to channels 1, 2, 3 & 4. In this

mode, channels 5 & 6 will operate with a sum of

the 1 & 3 and 2 & 4 input signals, respectively.

If you wish to feed all six channels by using

two channels of full-range input plus two

channels of low-frequency input (subwoofer

output from the source unit), first set the “Input

Mode” switch to “6 Ch.”. Next, it will be necessary

to split the full-range signals with y-adaptors and

feed these signals into the inputs to channels 1 &

2 and 3 & 4. The dedicated subwoofer signal will

be sent to channels 5 & 6.

If you wish to use only two channels of

input to deliver signal to all six amplifier

channels, set the “Input Mode” switch to “2

Ch.” and use only the inputs to channels 1 &

2. In this mode, Channels 3 & 5 will operate

with the channel 1 signal and channels 4 &

6 will operate with the Channel 2 signal.

Input Voltage Range:

The M600/6’s input sections are designed to

accept signal voltages from 100mV – 4V. This

will accommodate all preamp level signals and

many speaker level signals.

To use speaker-level sources, simply splice the

speaker output wires of the source unit onto a

pair of RCA plugs for each input pair. (or use JL

Audio part XD-CLRAIC2-SW) No “line output

converter” is needed in most cases.

If you find that the output cannot be reduced

sufficiently with a direct speaker level signal

applied to the amplifier, you may use a “line

output converter” to reduce the signal level.

INPUT SENSITIVITY CONTROLS

The controls labeled “Input Sens.” located in

each channel section can be used to match the

source unit’s output voltage to the input stage of

each pair of amplifier channels for maximum

clean output. Rotating the control clockwise will

result in higher sensitivity (louder for a given

input voltage). Rotating the control counter-

clockwise will result in lower sensitivity (quieter

for a given input voltage.)

To properly set the amplifier for maximum

clean output, please refer to Appendix A (page

14) in this manual. After using this procedure,

you can then adjust any or all “Input Sens.”

levels downward if this is required to achieve the

desired system balance.

Do not increase any “Input Sens.” setting for

any channel(s) of 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.

TURNON LEAD

The M600/6 uses a conventional +12V remote

turn-on lead, typically controlled by the source

unit's remote turn-on output. The amplifier will

turn on when +12V is present at its “Remote”

input and turn off when +12V is switched off. If

a source unit does not have a dedicated remote

turn-on output, the amplifier’s turn-on lead can

be connected to +12V via a switch that derives

power from an ignition-switched circuit.

The M600/6’s “Remote” turn-on connector is

designed to 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 2.5mm 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 (not the

insulation) is firmly gripped by the set screw.

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