JL Audio JX360/2 Owner'S Manual Download Page 9

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360/2

PREOUTS

The JX360/2 incorporates a pass-through preamp

PVUQVU 1SFPVUTTFDUJPOTPUIBUBEEJUJPOBM

amplifiers can be easily added to the system. This
pass-through pre-amp output delivers the same
signals that are fed into the amplifier's Low-Level
inputs. Input signals applied to the High-Level

JOQVUTXJMMOPUQBTTUISPVHIUIF1SFPVUT

The preamp output signal is not affected by the
“

Bass Boost

”

processing selected for the amplifier

or by any crossover filter selected (if the input
signal is full-range, the preamp output will be
full-range).

Note:

The signal level of the “

Preouts

”

is always

line-level (low voltage).

Summary of Contents for JX360/2

Page 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...

Page 2: ... you to hear necessary noises to operate your vehicle safely horns sirens etc SERIAL NUMBER In the event that your amplifier requires service or is ever stolen you will need to have B SFDPSE PG UIF QSPEVDU T TFSJBM OVNCFS 1MFBTF take the time to enter that number in the space provided below The serial number can be found on the bottom panel of the amplifier and on the amplifier packaging Serial Nu...

Page 3: ...enclosure be ventilated with the aid of a fan In normal applications fan cooling is not necessary IMPORTANT Mounting the amplifier upside down is strongly discouraged If mounting the amplifier under a seat make sure there is at least 1 inch 2 5 cm of space above the amplifier s outer shell to permit proper cooling Safety Considerations Your amplifier needs to be installed in a dry well ventilated ...

Page 4: ...urely connected to the amplifier 4 Run signal cables and remote turn on wire from the source unit to the final amplifier mounting location 5 Run speaker cables from the speaker systems to the amplifier mounting location 6 Find a good solid metal grounding point close to the amplifier and connect the negative power wire to it using appropriate hardware Use the same size power wire as the wire conne...

Page 5: ...tal in the vehicle The surface of the sheet metal should be sanded at the contact point to create a clean metal to metal connection between the chassis and the termination of the ground wire The use of a 10 sheet metal screw and star washer to lock down the connection is advisable Alternatively you can use a specialized grounding lug such as the JL Audio XB MGLU Any wires run through metal barrier...

Page 6: ...quate for the remote turn on connection To connect the remote turn on wire to the amplifier strip 1 2 inch 12 mm of insulation from the wire and insert it into the Remote receptacle on the power connector Tighten the connector down using the supplied 2 5 mm hex wrench INPUT SECTIONS The JX360 2 s has one pair of stereo inputs The input section input section offers two input connection methods one ...

Page 7: ...use these connections ground the black wires on the plugs to chassis ground and POMZ DPOOFDU UIF FGU BOE 3JHIU 1PTJUJWF QMVH XJSFT to the factory radio outputs IMPORTANT When the amplifier is bridged both the Left and Right inputs must be fed with signal Failure to do so will result in significant audible distortion 4FF SJEHJOH POTJEFSBUJPOT TFDUJPO PO 1BHF for further information INPUT SENSITIVIT...

Page 8: ...for connection of component speakers the JX360 2 s in a bi amplified system Off Defeats the filter completely allowing the full range of frequencies present at the inputs to feed the amplifier This is useful for systems utilizing outboard crossovers or requiring full range reproduction from the JX360 2 LP Low Pass Configures the filter to attenuate frequencies above the selected filter frequency a...

Page 9: ...als that are fed into the amplifier s Low Level inputs Input signals applied to the High Level JOQVUT XJMM OPU QBTT UISPVHI UIF 1SFPVUT The preamp output signal is not affected by the Bass Boost processing selected for the amplifier or by any crossover filter selected if the input signal is full range the preamp output will be full range Note The signal level of the Preouts is always line level lo...

Page 10: ...eliver 360W x 1 into a 4 ohm load or 220W x 1 into an 8 ohm load Operating a pair of bridged channels into a load lower than 4 ohms is not recommended IMPORTANT Any bridged channel pair must be fed by both Input Channels corresponding to it Left and Right Failure to do so will result in significant audible distortion When the JX360 2 is operating in bridged mode the output will be in mono only one...

Page 11: ...its circuitry When the problem is corrected the amplifier will return to normal operation and the Protect LED will shut off SERVICING YOUR 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 J...

Page 12: ...he nominal impedance of the speaker system connected to the amplifier outputs 6 Verify that you have disconnected UIF TQFBLFST CFGPSF QSPDFFEJOH 1MBZ 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 UIF WPMUBHF BU UIF DPSSFDU DPOOFDUPST BOE o 8 I...

Page 13: ... RMS x 2 2 ohms Bridged 280W RMS x 1 4 ohms Signal Processing Filter Type 12dB octave High Pass or Low Pass with continuously variable cutoff frequency selection from 50 200 Hz Defeatable Preamp Output 2 Channel unbuffered pass through with RCA type jacks Input Section No of Inputs One Stereo Pair Low Level Inputs Single ended with RCA jack inputs Low Level Input Range 200mV 4V RMS High Level Inpu...

Page 14: ...inched by the terminal set screw and that each connection is tight Check UP NBLF TVSF UIFSF JT 7 BU UIF 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...

Page 15: ... 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 s...

Page 16: ...16 JL Audio JX360 2 17 INSTALLATION NOTES Use this diagram to document your amplifier s switch and control positions ...

Page 17: ...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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