Bedienungsanleitung JL Audio 1v2 (Seite 7 von 41) (Englisch)

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12 | JL Audio - XD1200/1v2 Owner’s Manual

ENGLISH

APPENDIX B:

Precise Frequency Selection Chart

“FILTER FREQ” AMP FILTER

Detent Panel Actual

Number Marking Freq.

Full counter-clockwise: 53

01 ............................53

02 ...........“50” ............53

03 ............................54

04 ............................54

05 ............................55

06 ............................57

07 ............................59

08 ...........“60” ............61

09 ............................63

10 ............................65

11 ............................67

12 ............................70

13 ............................72

14 ............................75

15 ............................78

16 ...........“80” ............81

17 ............................85

18 ............................88

19 ............................93

20 .......“12 o’clock” ........97

21 ...........................102

22 ...........................107

23 ...........................113

24 ..........“120” ..........120

25 ...........................127

26 ...........................135

27 ...........................144

28 ...........................156

29 ...........................169

30 ...........................184

31 ...........................203

32 ..........“200” ..........227

33 ...........................254

34 ...........................290

35 ...........................337

36 ...........................392

37 ...........................426

38 ..........“500” ..........447

39 ...........................467

Full-clockwise: 470

APPENDIX C:

XD1000/1v2 Specifications

General Specifications:

Recommended Fuse Value: 80A

Recommended Fuse Type: MAXI® or AGU

Input Sections:

No. of Inputs: One Stereo Pair

Input Type: Differential-balanced with RCA jack inputs

Input Range: 200mV - 8V RMS

Amplifier Section:

Amplifier Topology: NexD™ High Speed Class D

Power Supply: Unregulated MOSFET switching type

Rated Power at 14.4V with less than

1% THD+Noise (20Hz - 20 kHz)

600W RMS x 1 @ 4 ohms

800W RMS x 1 @ 3 ohms

1000W RMS x 1 @ 2 ohms

Rated Power @ 12.5V with less than

1% THD + Noise (20Hz - 20 kHz)

500W RMS x 1 @ 4 ohms

650W RMS x 1 @ 3 ohms

800W RMS x 1 @ 2 ohms

Signal to Noise Ratio:

>83 dB referred to rated power

(A-weighted, 20 Hz-20 kHz noise bandwidth)

>53 dB referred to 1W

(A-weighted, 20 Hz-20 kHz noise bandwidth)

Frequency Response: 7 Hz - 500 Hz (+0, -1dB)

Damping Factor:

>1000 @ 4 ohms / 50 Hz

>500 @ 2 ohms / 50 Hz

Amplifier Filters:

Amplifier Low-Pass Filter:

State-variable, 12 dB/octave Butterworth or 24 dB/octave

Linkwitz-Riley with continuously variable cutoff frequency

selection from 50 - 500 Hz (defeatable).

Infrasonic Filter:

24 dB/octave Butterworth @ 30 Hz (defeatable).

Preamp Output:

Buffered pass-through type.

Dimensions(LxWxH):

14.73” x 7.09” x 2.05” (374mm x 180mm x 52mm)

APPENDIX A:

Input Sensitivity Level Setting

Following the directions below will allow the

installer to adjust the input sensitivity of each

amplifier channel pair simply and easily in just a

few minutes using equipment which is commonly

available in installation bays.

Necessary Equipment

• Digital AC Voltmeter

• CD with a sine-wave test tone recorded at

0 dB reference level in the frequency range

to be amplified for that set of channels

(50 Hz for subwoofer channels, 1 kHz for a

midrange application). Do not use attenuated

test tones (-10 dB, -20 dB, etc.).

The Nine-Step Procedure

1) Disconnect the speaker(s) from the

amplifier’s speaker output connectors.

2) Turn off all processing (bass/treble, loudness,

EQ, etc.) on the source unit, processors (if

used) and amplifier. Set fader control to center

position and subwoofer level control to 3/4 of

maximum (if used to feed the XD1000/1v2).

3) Turn the amplifier’s “Input Sens.” control all

the way down.

4) Set the source unit volume to 3/4 of full

volume. This will allow for reasonable gain

overlap with moderate clipping at full volume.

5) Using the chart on this page, determine the target

voltage for input sensitivity adjustment according

to the nominal impedance of the speaker system

connected to the amplifier outputs.

6) Verify that you have disconnected the speakers

before proceeding. Play a track with an

appropriate sine wave (within the frequency

range to be amplified by the XD1000/1v2) at

3/4 source unit volume.

7) Connect the AC voltmeter to the speaker output

connectors of the amplifier. Make sure you test

the voltage at the correct connectors (+ and –).

8) Increase the “Input Sens.” control until the

target voltage is observed with the voltmeter.

9) Once you have adjusted the XD1000/1v2 to

its maximum low-distortion output level,

reconnect the speaker(s). The “Input Sens.”

controls can now be adjusted downward if the

amplifier requires attenuation to achieve the

desired system balance.

Do not increase any “Input Sens.” setting for

any amplifier channel or channel pair in the

system beyond the maximum level established

during this procedure. Doing so will result in

audible distortion and possible speaker damage.

It will be necessary to re-adjust the

“Input Sens.” if any equalizer boost is activated

after setting the “Input Sens.” with this

procedure. This applies to any EQ boost circuit,

including source unit tone controls or EQ

circuits. EQ cuts will not require re-adjustment.

Nom. Impedance Target AC Voltage

4 63.2 V

3 49.0 V

2 34.6 V

1

Not Recommended

Due to ongoing product development, all specifications are subject to

change without notice.

JL Audio 1v2 Seite 7

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