Bedienungsanleitung JL Audio M1000 (Seite 7 von 11) (Englisch)

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12 | JL Audio - M1000/5v2 Owner’s Manual

Crossover Setup for Tri-Amplified System

with one M1000/5v2:

First go to the “SUB CH.” control section

and select “12dB” or “24dB” (low-pass) on the

“LP Filter Mode” switch and an appropriate

“Filter Freq.” (80 Hz is a good starting point).

The “12dB” setting engages a shallow filter slope

that gradually attenuates frequencies above the

selected “Filter Freq.” setting. The “24dB” setting

engages a sharper filter slope that more aggressively

attenuates frequencies above the selected “Filter

Freq.” setting. Neither setting is inherently

“better”, but in general, the shallower “12dB”

setting is more desirable for a subwoofer having

to fire from a trunk into the cabin of a sedan or

coupe. The sharper “24dB” setting is typically

better in a hatchback, SUV or wagon application.

Experiment to find the slope setting that results in

the smoothest subwoofer to midbass transition.

Next, turn your attention to the “CH 3 &

4” Controls and select “BP” (bandpass) on the

“Filter Mode” switch. A bandpass filter is actually

composed of two filters (one high-pass and one

low-pass), which in combination allow a defined

“band” of frequencies to pass through the amplifier

channels and on to the speakers. These are ideal for

actively filtered mid-bass or mid-range speakers in

automotive sound systems.

Now that you have engaged Bandpass Mode

for Channels 3 & 4, select an appropriate “Filter

Freq.” (again, 80 Hz is a good starting point). The

Filter Frequency you are adjusting with this control

is the high-pass portion of the bandpass filter. The

low-pass portion is automatically set by the tweeter

channel ’s “Filter Freq.” adjustment (CH 1 & 2). The

low-pass portion of the bandpass filter will always

track with the CH 1 & 2 “Filter Freq.” setting.

Finally, turn your attention to the “CH 1

& 2” Controls and select “x10” (high-pass)

on the “HP Filter Mode” switch. This switch

position multiplies the indicated “Filter

Freq.” value by a factor of 10, so that an

indicated frequency of 500 Hz is actually a

filter frequency of 5000 Hz (5 kHz). The filter

slope for this section is fixed at 12dB/octave.

Now, select an appropriate “Filter Freq.” for

your tweeters (5000 Hz is a good starting point).

Before attempting any lower frequency settings,

consult the documentation for the tweeters you

are using and make sure you will not be driving

the tweeters with frequencies lower than they are

designed to handle. JL Audio mobile component

tweeters should not be operated with Filter

Frequencies lower than 3 kHz.

After proper adjustment of the “Input

Sens.” controls for both main channel

pairs and the subwoofer channel using the

method shown in Appendix A (page 14),

you can fine tune filter frequencies and

attenuate either pair of channels to achieve

proper balance. For precise filter frequency

information refer to Appendix B (page 15)

To operate two M1000/5v2’s in Tri-Amplified

mode (one for left channel and the other for right

channel), set the “Input Mode” switches of both

amplifiers in “2 Ch.” mode, and apply the left

channel signal to both the left and right inputs of

the first amplifier’s Channel 1 & 2 Inputs, using

an RCA y-adaptor with one female and two male

ends. Then apply the right channel signal to both

the left and right inputs of the second amplifier’s

Channel 1 & 2 inputs, using a second RCA

y-adaptor with one female and two male ends.

SERVICING YOUR JL AUDIO AMPLIFIER

If your amplifier fails or malfunctions, please

return it to your authorized JL Audio dealer so

that it may be sent in to JL Audio for service.

There are no user serviceable parts or fuses inside

the amplifier. The unique nature of the circuitry

in the JL Audio amplifiers requires specifically

trained service personnel. Do not attempt

to service the amplifier yourself or through

unauthorized repair facilities. This will not only

void the warranty, but may result in the creation

of more problems within the amplifier.

If you have any questions about the installation or

setup of the amplifier not covered in this manual,

please contact your dealer or technical support.

JL Audio Technical Support:

(954) 443-1100

9:00 AM – 5:30 PM (Eastern Time Zone)

Monday - Friday

SYSTEM CONFIGURATIONS

The M1000/5v2 is a very flexible amplifier, well-

suited for a multitude of system configurations. In

this section, the most likely configurations for a

system with a single M1000/5v2 are explained in

detail.

Once you have selected your desired

configuration, you can use the amplifier panel

drawing on pages 18 & 19 to mark the required

switch positions for easy reference.

BIAMPLIFIED SYSTEMS

Bi-amplified systems are defined as systems

in which separate amplifier channels drive low-

frequency (LF) and high-frequency (HF) speakers

and are separately filtered to send appropriate

frequency ranges to each speaker system.

The most common application of

bi-amplification in mobile audio is to drive a

subwoofer system from one or more amplifiers or

channels and component speakers from separate

amplifiers or channels.

The M1000/5v2 can be configured to drive a

bi-amplified system by itself.

Bi-Amplified System with one M1000/5v2

In this configuration, the Subwoofer Channel

of the M1000/5v2 will drive a subwoofer system

with low-pass filtering. The Main Channels (1&2,

3&4) will drive component speakers in stereo

with high-pass filtering.

Crossover Setup for Bi-Amplified System

with one M1000/5v2:

Once the input sections have been configured

appropriately (see page 6), go to the “SUB CH.”

control section and select “12dB” or “24dB”

(low-pass) on the “LP Filter Mode” switch and

an appropriate “Filter Freq.” (80 Hz is a good

starting point). The “12dB” setting engages a

shallow filter slope that gradually attenuates

frequencies above the selected “Filter Freq.”

setting. The “24dB” setting engages a sharper

filter slope that more aggressively attenuates

frequencies above the selected “Filter Freq.”

setting. Neither setting is “better”, but in general,

the shallower “12dB” setting is more desirable for

a subwoofer having to fire from a trunk into the

cabin of a sedan or coupe. The sharper “24dB”

setting is typically better in a hatchback, SUV or

wagon application. Experiment to find the slope

setting that results in the smoothest subwoofer to

midbass transition.

Next, turn your attention to the “CH 1 & 2”

Controls and select “x1” (high-pass) on the “HP

Filter Mode” switch and select an appropriate

“Filter Freq.” (again, 80 Hz is a good starting

point). The “x1” setting means that the Filter

Freq. indicated on the dial is exactly what you are

selecting. (In the “x10” mode, the actual Filter

Frequency is ten times higher than the indicated

value. This setting is generally not used in

bi-amplified systems.)

Finally, turn your attention to the “CH 3 & 4”

Controls and select “HP” (high-pass) on the “Filter

Mode” switch and select an appropriate “Filter

Freq.” (again, 80 Hz is a good starting point).

Tri-Amplified Systems with one M1000/5v2

The M1000/5v2’s 3-way crossover capability

allows you to create true, tri-amplified systems by

selecting the appropriate settings described below.

In a tri-amplified configuration, the

Subwoofer Channel of the M1000/5v2 will

drive a subwoofer system, in mono, with

low-pass filtering. Channels 3 & 4 will drive

component woofers (or mid-range speakers) in

stereo with bandpass filtering (both a high-pass

and a low-pass filter applied). Channels 1 & 2

will drive high-frequency speakers (tweeters,

typically), in stereo, with high-pass filtering.

To operate a single M1000/5v2 in Tri-Amplified

mode, set the “Input Mode” switch in “2 Ch.”

mode, and apply a single set of stereo inputs to the

Ch. 1 & 2 Inputs only!

JL Audio M1000 Seite 7

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