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Thank you for purchasing a JL Audio amplifier for

your automotive sound system.

Your amplifier has been designed and manufactured to exacting

standards in order to ensure years of musical enjoyment in your vehicle.

For maximum performance, we highly recommend that you have

your new amplifier installed by an authorized JL Audio dealer. Your

authorized dealer has the training, expertise and installation 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 JL Audio dealer for assistance. If you need further assistance,

please call the JL Audio Technical Support Department

at (954) 443-1100 during business hours.

OWNER’S MANUAL

400W 2/3/4 Channel Amplifier

Содержание XD400/4

Страница 1: ...lation 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 JL...

Страница 2: ...e a record of the product s serial number Please 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 Number INSTALLATION APPLICATIONS This amplifier is designed for operation in vehicles with 12 volt negative ground electrical systems Use of this product in vehicles with positive gr...

Страница 3: ...ll ventilated environment and in a manner which does not interfere with your vehicle s safety equipment air bags seat belt systems ABS brake systems etc You should also take the time to securely mount the amplifier so that it does not come loose in the event of a collision or a sudden jolt to the vehicle Stupid Mistakes to Avoid t Check before drilling any holes in your vehicle to make sure that y...

Страница 4: ...inal 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 of the JL Audio ECS master ground lug XB MGLU is recommended Use 8 or 4 AWG wire no longer than 36 inches 90 cm from the amplifier to the ground con...

Страница 5: ...ew firmly taking care not to strip the head of the screw The ground connection should be made using 8 or 4 AWG wire and should be kept as short as possible while accessing a solid piece of sheet metal 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 For optimal ...

Страница 6: ...SECTION The XD400 4 s input section allows you to send signals to the amplifier section through the use of two or four differential balanced inputs Input connections are via up to two pairs of traditional RCA type jacks If you wish to send four discrete channels into the XD400 4 simply use all four inputs and set the Input Mode switch in the 4 Ch position If you wish to use only two channels of in...

Страница 7: ...wise will result in lower sensitivity quieter for a given input voltage To properly set the amplifier for maximum clean output please refer to Appendix A page 14 in this manual After using this procedure you can then adjust any or all Input Sens levels downward if this is required to achieve the desired system balance Do not increase any Input Sens setting for any channel s of any amplifier in the...

Страница 8: ... channels 1 2 another filter for channels 3 4 and a third filter for channels 5 6 Each of these filters can be configured independently into one of two filter types or defeated completely by way of the three position Filter Mode switches 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...

Страница 9: ...gh pre amp output can be configured two different ways using the switch labeled Preouts From 1 1 2 The preamp output delivers the same signal that is connected to the CH 1 2 Inputs This mode is useful for feeding a subwoofer amplifier when the XD400 4 is being used to drive front and rear speaker systems In this mode the preamp output signal will depend only on the input signal level of CH 1 2 all...

Страница 10: ... When bridged each channel will deliver optimum power into a 4 ohm load When a pair of channels are bridged they will deliver 200W x 1 into a 4 ohm load or 150W x 1 into an 8 ohm load Operating a pair of bridged channels into a load lower than 4 ohms is not recommended Because a bridged pair of channels requires that both channels receive input you need to connect both left and right inputs to the...

Страница 11: ... a very short duration This functionality can be used to diagnose a short circuit by only connecting one channel at a time The Status LED will turn amber when you connect the channel that is experiencing the problem and turn the volume up 5 LED off Amplifier Shuts Off Unexpectedly The only condition that will shut down an undamaged XD400 4 completely is if battery voltage or remote turn on voltage...

Страница 12: ... from the front of the vehicle B Fade Subwoofer Level vs HF Level Required a source unit or processor with two pairs of stereo outputs Input Connections the first stereo pair of source unit outputs is connected to the CH 1 Left and CH 2 Right inputs of the XD400 4 The second stereo pair of source unit outputs is connected to the CH 3 Left and CH 4 Right inputs select 4 Ch on the Input Mode switch ...

Страница 13: ...woofer amplifier inputs Result with this option the user has the ability to fade the level of the subwoofer amplifier s input relative to the HF channels but cannot control front to rear fading of the HF channels The relative level of the front and rear HF channels will be fixed by the XD400 4 s Input Sens settings and will not be user adjustable from the front of the vehicle B Subwoofer Level Con...

Страница 14: ...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 XD400 4 at 3 4 source unit volume 7 Connect the AC voltmeter to the speaker output connectors of the amplifier If the channel pair is operating in stereo it is only necessary to measure one channel If bridged make sure...

Страница 15: ... dB referred to rated power A weighted 20 Hz 20 kHz noise bandwidth 84 dB referred to 1W A weighted 20 Hz 20 kHz noise bandwidth Frequency Response 12 Hz 22 kHz 0 1dB Damping Factor 150 4 ohms per ch 50 Hz 75 2 ohms per ch 50 Hz Crossover Filters Filter Type State variable 12dB octave Butterworth with continuously variable cutoff frequency selection from 50 500 Hz Configurable as Low Pass or High ...

Страница 16: ...r this problem jump the 12VDC wire to the Remote terminal to see if the amplifier turns on I get a repetitive ticking or popping sound coming out of the speaker s Check the speaker wires for a possible short either between the positive and negative leads or between either speaker lead and the vehicle s chassis ground If a short is present you will experience distorted and or attenuated output The ...

Страница 17: ... 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 1 and 4 0 volts should be present at the o...

Страница 18: ...18 JL Audio XD400 4 Owner s Manual INSTALLATION NOTES Use this diagram to document your amplifier s switch and control positions ...

Страница 19: ...19 ENGLISH ...

Страница 20: ...riginal purchase at retail and no warranties whether express or implied shall apply 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 shou...

Страница 21: ...Printed in China XD400 4 MAN 02 2010 w w w j l a u d i o c o m ...

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