Bedienungsanleitung JL Audio J 360 (Seite 7 von 11) (Englisch)

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APPENDIX B:

J2-360.2 Specifications

General Specifications:

Recommended Fuse Value: 40A

Recommended Fuse Type: AFS, AGU or MaxiFuse™ at

battery, 2 x 20A ATC fuses on amplifier chassis

Input Sections:

No. of Inputs: One Stereo Pair

Low-Level Inputs: Single-ended with RCA jack inputs

Low-Level Input Range: 200mV - 4V RMS

High-Level Inputs: Single-ended with molded connector

High-Level Input Range: 2V - 10V RMS

Amplifier Section:

Amplifier Topology: Class A/B with Dual N-Channel

MOSFET output stage

Power Supply: PWM switching type, unregulated

Rated Power with less than 1% THD (14.4V supply):

Stereo, all channels driven:

110W RMS x 2 @ 4 ohms

135W RMS x 2 @ 3 ohms

180W RMS x 2 @ 2 ohms

Bridged, all channels driven:

220W RMS x 1 @ 8 ohms

270W RMS x 1 @ 6 ohms

360W RMS x 1 @ 4 ohms

Frequency Response: 10 Hz - 35 kHz +/- 0.5 dB

Crossover Sections:

Filter Type: 12dB/octave High-Pass or Low-Pass with

continuously variable cutoff frequency selection from

50 - 500 Hz. Defeatable.

Preamp Output:

2-Channel, pass-through with unity gain, RCA-type jacks.

Dimensions (LxWxH):

12.80" x 9.60" x 2.15" (325 mm x 244 mm x 55 mm)

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 connected, set the amplifier’s

Remote Bass Control at maximum (full

clockwise).

3) Turn the “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) 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 amplifier 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.

IMPORTANT

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.” for the affected channels 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.

Due to ongoing product development, all specifications are subject to

change without notice.

Nom.

Impedance

Target AC Voltage

Stereo Bridged

8

21 V 42 V

6

21 V 40 V

4

21 V 38 V

3

20 V not recommended

2

19 V not recommended

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