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JL Audio

 

 

 

 

15

“my amplifier turns on, but there is no output”

 

Check  

the input signal using an AC voltmeter to measure the 
voltage from the source unit while an appropriate test tone is 
played through the source unit (disconnect the input cables 
from the amplifier prior to this test). The frequency used 
should be in the range that is to be amplified by the amplifier  
(example: 50 Hz for a sub bass application or 1 kHz for a full 
range / high-pass application).  A steady, sufficient voltage 
(between 0.2 and 8.0-volts) should be present at the output of 
the signal cables. 

 

Check  

the output of the amplifier. Using the procedure explained in 
the previous check item (after plugging the input cables back 
into the amplifier) test for output at the speaker outputs of 
the amplifier. Unless you enjoy test tones at high levels, it is 
a good idea to remove the speaker wires from the amplifier 
while doing this.  Turn the volume up approximately half 
way. 5V or more should be measured at the speaker outputs.  
This output level can vary greatly between amplifiers but it 
should not be in the millivolt range with the source unit at 
half volume. If you are reading sufficient voltage, check your 
speaker connections as explained below.

 

Check

  to ensure that the speaker wires are making a good 

connection with the metal inside the terminal block.  The 
speaker wire connectors are designed to accept up to 8 AWG 
wire.  Make sure to strip the wire to allow for a sufficient 
connection with the metal inside the terminal block.

“How do i properly set the input sensitivity on my amplifier”

 

Please  

refer to Appeaset the input sensitivity for maximum, low-
distortion output.

“my amplifier doesn’t turn on”

 

Check  

the fuse, not just visually, but with a continuity meter. It is 
possible for a fuse to have poor internal connections that 
cannot be found by visual inspection. It is best to take the 
fuse out of the holder for testing. If no problem is found with 
the fuse, inspect the fuse-holder. 

 

Check  

the integrity of the connections made to each of the 

+12VDC

”,  “

Ground

”,  and “

Remote

” terminals. Ensure 

that no wire insulation is pinched by the terminal set screw 
and that each connection is tight. 

 

Check  

to make sure there is +12V at the

 “Remote”

 connection of the 

amplifier. In some cases, the turn-on lead from the source unit 
is insufficient to turn on multiple devices and the use of a relay 
is required.  To test for this problem, jump the “

+12VDC

” wire 

to the “

Remote

” terminal to see if the amplifier turns on. If this 

does not work, proceed to the next step.

 

“my amplifier’s output fluctuates when i tap on it or hit a bump”

 

Check  

the connections to the amplifier. Make sure that the 
insulation for all wires has been stripped back far enough to 
allow a good contact area inside the terminal block. 

 

Check  

the input connectors to ensure that they all are making good 
contact with the input jacks on the amplifier. 

aPPendix C:  troublesHooting

Содержание J2360.2

Страница 1: ...llation equipment to ensure optimum performance from this product Should you decide to install the amplifier yourself please take the time to read this manual thoroughly so as to familiarize yourself with its installation requirements and setup procedures If you have any questions regarding the instructions in this manual or any aspect of your amplifier s operation please contact your authorized J...

Страница 2: ... or in any other area that will expose the amplifier circuitry to the elements Protect Your Hearing We value you as a long term customer For that reason we urge you to practice restraint in the operation of this product so as not to damage your hearing and that of others in your vehicle Studies have shown that continuous exposure to high sound pressure levels can lead to permanent irreparable hear...

Страница 3: ... Brid FUSES Ground 20A 20A Remote 12VDC Product Description The JL Audio J2 360 2 is a two channel full range audio amplifier utilizing Class A B technology The J2 360 2 can be operated with a wide variety of source units and system configurations For detailed specifications please refer to Appendix B page 13 Typical Installation Sequence The following represents the sequence for a typical amplifi...

Страница 4: ... speaker damage Turn On Lead The J2 360 2 is turned on and off using a conventional 12V remote turn on lead typically controlled by the source unit s remote turn on output e in China LEFT CHANNEL RIGHT CHANNEL Bridged FUSES Ground 20A 20A Remote 12VDC 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 ...

Страница 5: ...ing their way through the amplifier section to the speaker s This serves to improve tonal balance and to avoid distortion and possible speaker failure Correct use of this filter can substantially increase the longevity and fidelity of your audio system Filter Frequency Hz Input Sens Bass Boost min max 50 500 Off 9dB Protect er HP Off LP Filter Mode 1 Filter Mode Control The J2 360 2 employs a 12dB...

Страница 6: ...ne of these two ways 1 Left Channel Only or Right Channel Only Information If you wish to send a left only or right only signal to the J2 360 2 use a Y Adaptor to split the single channel signal into both left and right RCA inputs This option is useful when using the J2 360 2 to drive left channel speakers only and another J2 360 2 to drive right channel speakers only 2 Left Right Channel Informat...

Страница 7: ...tc 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 U...

Страница 8: ...connectors are designed to accept up to 8 AWG wire Make sure to strip the wire to allow for a sufficient connection with the metal inside the terminal block How do I properly set the input sensitivity on my amplifier Please refer to Appeaset the input sensitivity for maximum low distortion output My amplifier doesn t turn on Check the fuse not just visually but with a continuity meter It is possib...

Страница 9: ...is diagram to document your amplifier s switch and control positions Filter Frequency Hz Input Sens Bass Boost min max 50 500 Off 9dB Power Protect LEFT RIGHT LEFT RIGHT Preamp Outputs Amplifier Inputs HP Off LP Filter Mode High Level Inputs ...

Страница 10: ...18 JL Audio 19 INSTALLATION NOTES INSTALLATION NOTES ...

Страница 11: ...ly to this product thereafter Some states do not allow limitations on implied warranties therefore these exclusions may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state If you need service on your JL AUDIO product All warranty returns should be sent to JL Audio s Amplifier Service Facility freight prepaid through an au...

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