Bedienungsanleitung JL Audio RD1000 (Seite 6 von 20) (Englisch)

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6 | JL Audio - RD1000/1 Owner’s Manual

TURNON OPTIONS

The RD1000/1 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) DC offset-sensing turn-on circuit

3) Signal-sensing turn-on circuit

+12V Remote Turn-On: This is the preferred

method for turning the amplifier on/off. The

amplifier will turn on when +12V is present at

its “Remote” input and turn off when +12V is

switched off. This +12V remote turn-on signal

is typically controlled by a source unit or OEM

interface processor’s remote turn-on wire. The

RD1000/1’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.

Remote

Level

Control

(RBC-1)

Mono Subwoofer Output

INPUT SECTION

(

)

(

)

(

)

(

)

PREOUTS

+12 VDC Ground Remote

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

+12V 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 +12V

turn-on leads.

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

for high-level (speaker level) signals, not for low-

level (preamp level) signals. The circuit senses

the input signal from CH. 1 (L) only.

Signal-Sensing: The amplifier will turn on

and off by detecting the presence of a full-range

audio signal. After approximately 30 seconds,

the amplifier will shut off. The sensitivity of this

circuit is designed for 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. The circuit senses the input signal from

CH. 1 (L) only.

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JL Audio RD1000 Seite 6

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