JL Audio 300-4
JL Audio 300-4, size: 377 KB
The JL Audio Slash v2 Series 300/4v2 4 channel amplifier puts out 75 watts RMS per channel to your system, and JL Audio's patented Class-AB amp circuitry delivers exceptional, natural sound with extremely low distortion. 4 channel Amplifier 75 watts RMS x 4 at up to 4 ohms Speaker and Preamp level Inputs
Brand: Car Audio Xperts
Part Numbers: 300 4v2, 300/4V2, 300/4v2, 3004V2, 98083
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JL Audio 2 12w3, 1 500/1, 1 300/4
User reviews and opinions
|pellgarlic||3:32pm on Saturday, October 16th, 2010|
|The Best Amp I Have Ever Owned,...With a Caveat This is a lot of amp for the money in a package that is dimensionally compact and easy to mount. The Best Amp I Have Ever Owned,...With a Caveat This is a lot of amp for the money in a package that is dimensionally compact and easy to mount.|
|amirtal33||7:10pm on Saturday, August 28th, 2010|
|The Best Amp I Have Ever Owned,...With a Caveat This is a lot of amp for the money in a package that is dimensionally compact and easy to mount.|
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JL AUDIO 300/4
four-channel full-range amplifier
o w n e r s m a n u a l
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 and extended warranty coverage, 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 amplifiers 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 (Eastern Time Zone).
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) hearing loss.This and all other highpower amplifiers are capable of producing such high sound pressure levels when connected to a speaker system. Please limit your continuous exposure to high volume levels. While driving, operate your audio system in a manner that still allows 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 a record of the products 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 12V, negative-ground electrical systems. Use of this product in vehicles with positive ground and/or voltages other than 12V may result in damage to the product and will void the warranty. This product is not certified or approved for use in aircraft. Do not attempt to bridge the outputs of this amplifier with the outputs of a second amplifier, including an identical one.
PLANNING YOUR INSTALLATION It is important that you take the time to read this manual and that you plan out your installation carefully.The following are some considerations that you must take into account when planning your installation. Cooling Efficiency Considerations: Your JL Audio amplifier employs an advanced type of heat management, called RealSink.This feature takes advantage of convection and radiation effects to remove heat from the amplifier circuitry. For optimum cooling performance, the vertical heat sinks located at the back of the amplifier should be exposed to as large a volume of air as possible. Enclosing the amplifier in a small, poorly ventilated chamber can lead to excessive heat build-up and degraded performance. If an installation calls for an enclosure around the amplifier, we recommend that this enclosure be ventilated with the aid of a fan. In normal applications, fan-cooling is not necessary, but you still need to follow some basic guidelines: Amplifier mounted vertically with heat sink fins pointing up: Optimum Amplifier mounted horizontally, right side up: Good Amplifier mounted horizontally, but upside down: Fair (not recommended if there is less than 1 inch (2.5 cm) clearance above the amplifier heat sinks) Amplifier mounted vertically with heat sink fins pointing laterally: Fair Amplifier mounted vertically with heat sink fins pointing down: Poor (not recommended)
TYPICAL INSTALLATION SEQUENCE The following represents the sequence for a typical amplifier installation, using an aftermarket source unit. Additional steps and different procedures may be required in some applications. If you have any questions, please contact your authorized JL Audio dealer for assistance. 1) Disconnect the negative battery post connection and secure the disconnected cable to prevent accidental re-connection during installation. This step is not optional! 2) Run power wire (minimum 8 AWG) from the battery location to the amplifier mounting location, taking care to route it in such a way that it will not be damaged and will not interfere with vehicle operation. Use 2 AWG or 1/0 AWG power wire if additional amplifiers are being installed with the 300/4. 3) Connect power wire to the positive battery post. Fuse the wire with an appropriate fuse block (and connectors) within 18 inches (45 cm) wire length of the positive battery post. This fuse is essential to protect the vehicle. Do not install the fuse until the power wire has been connected to the amplifier. 4) Run signal cables (RCA cables) and remote turn-on wire from the source unit to the amplifier mounting location.There are two ways to provide input to the 300/4. Please read the rest of this manual carefully to choose the best one for your system. 5) Run speaker wire 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 minimum 8 AWG power wire, no longer than 36 inches (90 cm) from the amplifier to the ground connection point. In some vehicles, it may be necessary to upgrade the battery ground wire. (See page 5 for important notice). 7) Securely mount the amplifier using the supplied screws. 8) Connect the positive and negative power wires to the amplifier. A fuse near the amplifier is not necessary. 9) Connect the remote turn-on wire to the amplifier. 10) Connect the RCA input cables to the amplifier.
11) Connect the speaker wires to the amplifier. 12) Carefully review the amplifiers control settings to make sure that they are set according to the needs of the system. 13) Install power wire fuse (40A for a single 300/4) and reconnect the negative battery post terminal. 14) Turn on the source unit at a low level to double-check that the amplifier is configured correctly. Resist the temptation to crank it up until you have verified the control settings. 15) Make necessary adjustments to the input sensitivity controls of the front and rear channel sections to obtain the right overall output and the desired balance between their outputs. See Appendix B (page 14) for the recommended input sensitivity setting method. 16) Enjoy the fruits of your labor with your favorite music. POWER CONNECTIONS Before installing the amplifier, disconnect the negative (ground) wire from the vehicle's battery. This will prevent accidental damage to the system, the vehicle and your body during installation.
bigger wire and vice-versa (1/0 AWG is biggest, 2 AWG is smaller, then 4 AWG, then 8 AWG, etc.). To connect the power wires to the amplifier, first back out the set screw on the top of the amplifier, using the supplied 2.5 mm hex wrench. Strip 1/2 inch (12 mm) of insulation from the end of each wire and insert the bare wire into the receptacle on the front panel of the amplifier, seating it firmly so that no bare wire is exposed.While holding the wire in place, tighten the set screw firmly, taking care not to strip the head of the screw. The ground connection should be made using the same gauge wire as the power connection 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.The use of a star washer to lock down the connection is advisable. Any wires run through metal barriers (such as firewalls), must be protected with a high quality rubber grommet to prevent damage to the insulation of the wire. Failure to do so may result in a dangerous short circuit.
! I M P O RTA N T
Many vehicles employ small (10 AWG - 6 AWG) wire to ground the battery to the vehicle chassis and to connect the alternator's positive connection to the battery.To prevent voltage drops, these wires should be upgraded to 4 AWG when installing amplifier systems with main fuse ratings above 60A. The 300/4's +12 VDC and Ground connections are designed to accept 8 - 4 AWG power wire. 8 AWG is the minimum recommended power wire size for this amplifier. If you are installing the 300/4 with other amplifiers and wish to use a single main power wire, use 2 AWG or 1/0 AWG main power wire (depending on the overall current demands of all the amplifiers in the system).This 2 AWG or 1/0 AWG power wire should terminate into a distribution block mounted as close to the amplifiers as possible and should connect to the 300/4 with 8 - 4 AWG power wire. Please note that smaller AWG numbers mean
FUSE REQUIREMENTS It is absolutely vital that the main power wire(s) to the amplifier(s) in the system be fused within 18 inches (45 cm) of the positive battery post connection.The fuse value at each power wire should be high enough for all of the equipment being run from that power wire. If only the 300/4 is being run from that power wire, we recommend a 40A fuse be used. AGU (big glass fuse) or MaxiFuse (big plastic-body fuse) types are recommended. No fuse is required or recommended directly before the amplifier power connection. If one is desired, we recommend the use of a 40A AGU fuse or MaxiFuse type.
each pair of amplifier channels for maximum clean output. Rotating the control clockwise will result in higher sensitivity (louder for a given input voltage). Rotating the control counter-clockwise will result in lower sensitivity (quieter for a given input voltage.) To properly set each pair of amplifier channels for maximum clean output, please refer to Appendix B (page 14) in this manual. After using this procedure, you can then adjust the relative level of each channel pair by adjusting the input sensitivity downward on either or both channel pairs, if they require attenuation to achieve the desired system balance. Do not increase the Input Sens. setting for any amplifier in the system beyond the maximum level established during the procedure outlined in Appendix B (page 14). Doing so will result in audible distortion and possible speaker damage. Be aware that both Input Sens. adjustments will have to be made, regardless of how many input cables are feeding the amplifier.These controls will allow you to set the appropriate relative levels for front and rear channels and any other amplifier channels in the system.
CROSSOVER CONTROLS Crossovers are groups of individual electronic filters which allow only certain frequency ranges to pass through them by attenuating frequencies outside the selected range.These filters allow the user to specify what frequency range will be sent out of each channel section of the amplifier.This, in turn, allows each speaker system to only reproduce a range of frequencies it is well-suited for, resulting in reduced distortion and improved fidelity. Front and Rear Filter Section:
The output of the amplifier will decrease for a given input voltage when the Input Range switch is placed in the High position. Conversely, the output will be higher with the switch in the Low position.While this may sound counter-intuitive, it is consistent with the descriptions above. 3) Input Sensitivity Adjustment: Located next to the Input Voltage switch in each input section is a rotary control labeled Input Sens. Once the appropriate Input Voltage range has been selected, this control can be used to match the source unit's output voltage to the input stage of
JL AUDIO 300/4 JL AUDIO 300/4
The Front Input Section also contains an Input Mode switch to allow operation of all four amplifier channels with one or two pairs of input signals. 1) Input Mode Switch: If you wish to operate all four channels of the 300/4 with a single pair of stereo inputs, select the 2ch position on the Input Mode switch and connect a single pair of input cables to the input jacks in the Front Input
For optimum power output at all four channels, connect the same impedance (between 1.5-4) on all four channels. On pages 16 and 17 are charts showing the continuous (RMS) power output capability of the 300/4 into various combinations of front and rear impedances (optimum output is shown in bold type). Please refer to these charts so you know what to expect in terms of power output.
BRIDGING CONSIDERATIONS Bridging is the practice of combining the output of two amplifier channels to drive a single load. When bridged, each channel produces signals of equal magnitude, but opposite polarity.The combined output of the two channels provides twice the output voltage available from a single channel.The 300/4 has been designed for bridging of its channel pairs without the need for input inversion adaptors.
If you connect a load higher than 4 nominal per channel in stereo mode (or 8 in bridged mode), power will drop by half with every doubling of impedance above 4 stereo / 8 mono. If you connect a load lower than 1.5 nominal per channel in stereo mode (or 3 in bridged mode, the amplifier protection circuitry activates a safe mode which reduces amplifier power to protect the circuitry from failure (the yellow Low LED lights to indicate that this has happened). See page 10 for details.
Speaker loads below 1.5 nominal per channel in stereo or 3 nominal in bridged mode are not recommended and may cause the amplifier output to distort excessively.
To bridge a pair of channels, use the Left + and Right speaker connectors only (the Left and Right + remain unused).Then connect a mono signal to both left and right RCA inputs for that channel pair.This requires an RCA Y-Adaptor (not included.) When bridged, each channel pair will deliver optimum power into a 3-8 load. Operating bridged channel pairs into a load lower than 3 is not recommended. Because a bridged pair of channels requires that both channels receive input, you need to connect both left and right RCA inputs to the bridged channel pairs inputs. Connection of only one RCA input will result in reduced power output, increased distortion and can cause the amplifier to overheat. Do not do this! Instead, use a Y-Adaptor to split the mono signal into both left and right RCA inputs. Why a mono signal? If you are bridging a pair of channels and use a stereo input, the only information that will reach the amplifier stage is the common-phase portion of the signal.This may be useful for passively deriving a center-channel signal, but is not going to give you a defined left or right channel. If you are looking to reproduce a single channels signal, you must split the mono signal with a Y-Adaptor and connect it to both left and right RCA inputs for the bridged channel pair.
STATUS INDICATOR LIGHTS / PROTECTION CIRCUITRY There are three status indicator lights on the top of the amplifier. These are as follows: 1) Power (Green): lights to indicate that the amplifier is turned on and operating normally. 2) Thermal (Red): lights to indicate that the amplifier has exceeded its safe operating temperature, putting the amplifier into a selfprotection mode, which reduces the power output of the amplifier. The red light will shut off and the amplifier will return to normal, full-power operating mode if the heat sink temperature drops back to a safe level. 3) Low (Amber): lights to indicate that the impedance of the speaker load connected to the amplifier is lower than the optimum load impedance range for the amplifier.When this light is on, a protection circuit engages and reduces the power output of all four amplifier channels.The amber indicator will also light when a short-circuit is detected in the speaker wiring (this can be a short between the positive and negative speaker wires or between either speaker wire and the vehicle chassis).This can be used to diagnose a short-circuit by only connecting one of the amplifier sections at a time (front or rear).The amber LED will light when you connect the section that is experiencing the problem and turn the volume up. There is only one condition that will shut down an undamaged 300/4 completely If battery voltage drops below 10 volts, the entire amplifier will shut itself off.The green Power indicator on the top of the amplifier will turn off when this occurs.The amplifier will turn back on when voltage climbs back above 10 volts.This may happen in a rapid cycle when bass-heavy program material causes a weak charging system to dip below 10 volts momentarily. If this is happening in your system, have your charging system inspected to make sure it is working properly. A 0.5 or 1.0 Farad rapid-discharge capacitor connected in parallel to the amplifier power connections will minimize these short duration voltage dips in most systems that are having this problem. For information on troubleshooting this amplifier, refer to Appendix C (page 18).
SERVICING YOUR JL AUDIO 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 JL Audio amplifiers requires specifically trained service personnel. Do not attempt to service the amplifier yourself or through unauthorized repair facilities.This will not only void the warranty, but may result in the creation of more problems within the amplifier. If you have any questions about the installation or setup of the amplifier not covered in this manual, please contact your dealer or the JL AUDIO Technical Department for assistance: (954) 443-1100 9:00 AM 5:30 PM Eastern Time, Monday Friday
SYSTEM CONFIGURATIONS The 300/4 is a flexible amplifier, well-suited for a multitude of system configurations. In this section, the most likely configurations are explained in detail. Once you have selected your desired configuration, you can use the amplifier panel drawings on the bottom of the following pages to mark the required switch positions for easy reference. BI-AMPLIFIED SYSTEMS Bi-amplified systems are defined as systems in which separate amplifier channels drive lowfrequency (LF) and high-frequency (HF) speakers and are separately filtered to send appropriate frequency ranges to each speaker system. The most common application of bi-amplification in mobile audio is to drive a subwoofer system from one or more amplifiers or channels and component speakers from separate amplifiers or channels. The 300/4 can be configured to drive a biamplified system by itself or with a separate subwoofer amplifier. BI-AMPLIFIED SYSTEM WITH ONE 300/4 In this configuration, the rear channels of the 300/4 will drive subwoofers (stereo 75W x 2 or bridged 150W x 1) with low-pass filtering.The front channels will drive component speakers in stereo (75W x 2) with high-pass filtering. Input connection options for a bi-amplified system with one 300/4 are as follows: A) No User Adjustability Required: a basic source unit or processor with left and right stereo outputs. Input Connections: a single pair of stereo source unit outputs connected to the front channel inputs of the 300/4 (select 2ch on the Input Mode switch in the Front Input Section).
Result: the relative level of the LF and HF channels will be fixed by the 300/4s Input Sens. settings and will not be user adjustable from the front of the vehicle. B) Fade Subwoofer Level vs. HF Level Required: a source unit or processor with front and rear pairs of outputs. Input Connections: the first stereo pair of source unit outputs is connected to the front inputs of the 300/4.The second stereo pair of source unit outputs is connected to the rear inputs (select 4ch on the Input Mode switch in the Front Input Section). Result: in this mode, the user has the ability to fade or control the level of the LF channels relative to the HF channels via the source units fader control without exceeding the maximum clean output level set by each amplifier sections Input Sens. controls. C) Subwoofer Level Control Only Required: a source unit or processor with left, right and subwoofer outputs. Input Connections: the main stereo pair of source unit outputs is connected to the front inputs of the 300/4.The source units dedicated subwoofer output is connected to the rear inputs (select 4ch on the Input Mode switch in the Front Input Section). Result: in this mode, the user has the ability to control the absolute level of the LF channels relative to the HF channels.
Set the subwoofer amplifiers Input Sens. with the source units subwoofer level control set at 3/4 of full output.
APPENDIX A: Precise Frequency Selection Chart
FILTER FREQ FRONT / REAR FILTERS
APPENDIX B: Input Sensitivity Level Setting JL Audio amplifiers utilizing the Regulated Intelligent Power Supply (R.I.P.S.) allow delivery of their rated power when connected to any load impedance from 1.5 - 4 per channel (3 - 8 bridged) and when connected to a charging system with any voltage from 11 - 14.5V. This design is beneficial for many reasons. One of these reasons is ease of setup. Because each JL Audio amplifier will always deliver the same amount of power within its operational range of impedances and supply voltages, the maximum, unclipped output is very predictable.This makes setting the gain structure via the input sensitivity controls very simple. Following the directions below will allow the user to adjust the input sensitivity of the amplifier(s) 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.).
Detent Panel Actual Number Marking Freq. Full counter-clockwise: 58 01.58 02.50.58 03.58 04.58 05.59 06.60 07.61 08.60.63 09.65 10.67 11.69 12.71 13.74 14.75.77 15.80 16.82 17.85 18.90 19.93 20.95.97 21.102 22.107 23.113 24.120 25.127 26.130.135 27.143 28.153 29.171 30.182 31.201 32.200.223 33.253 34.289 35.337 36.404 37.474 38.500.514 39.525 Full-clockwise: 542
The Nine-Step Procedure (follow this procedure for each pair of channels) 1) Disconnect the speaker(s) from the amplifiers Front Speaker Outputs and Rear Speaker Outputsconnectors. 2) Turn off all processing on the source unit (bass/treble, loudness, EQ, etc.). Set fader control to center position and subwoofer level control to 3/4 of maximum (if used to drive the 300/4). 3) Switch the Input Voltage to Low and turn the Input Sens. control on both sets of channels all the way down. 4) Set the source unit volume to 3/4 of full volume. If either set of channels is being driven by a source units dedicated subwoofer output, also adjust the source units subwoofer level control to 3/4 of maximum output.This will allow for reasonable gain overlap with moderate clipping at full volume. 5) Using the listings on the following pages (pages 16 & 17), find the configuration that matches your specific speaker impedance as connected to the 300/4. Make sure you note whether your channels are in stereo or bridged and use the appropriate listing section. Once you have found your configuration, note the target voltage for input sensitivity adjustment for each channel section.This target voltage is listed in parentheses as (set to x volts). 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 each set of channels) at 3/4 source unit volume. 7) Connect the AC voltmeter to the Front Speaker Outputs or Rear Speaker Outputs connectors of the amplifier. If the channel pair is operating in stereo, it is only necessary to measure one channel. If bridged, make sure you test the voltage at the correct connectors (L+ and R). 8) Increase the Input Sens. control until the target voltage is delivered for that set of channels. If excessive voltage is read on either set of channels with the control at minimum (full counterclockwise), switch the appropriate Input Voltage switch to High and re-adjust.
9) Once you have adjusted each set of channels to its maximum low-distortion output level, reconnect the speaker(s).The Input Sens. controls can now be adjusted downward if either or both sets of channels requires attenuation to achieve the desired system balance.
Do not increase any Input Sens. setting 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.
TARGET VOLTAGE CHARTS ARE ON THE NEXT TWO PAGES
(continued on next page)
APPENDIX B (CONT.): Input Sensitivity Level Setting Reference Listings Step 1: Define your front/rear channel configuration (Stereo/Stereo, Stereo/Bridged or Bridged/Bridged Step 2: Look in the Optimum Configurations listing for your channel configuration. If it does not appear here, look for it in the Sub-Optimum Configurations listing for your channel configuration. Step 3: Once you have found your specific combination of impedances, use the target voltage listed in parentheses for each set of channels to set the Input Sens. controls of the 300/4. For easy reference, channels achieving optimum power have their power output listed in bold type. OPTIMUM CONFIGURATIONS (Stereo/Stereo): 1st Pair of Channels (Stereo) 2nd Pair of Channels (Stereo) Stereo 4: 75W x 2 (set to 17.3 V / ch.)...Stereo 4: 75W x 2 (set to 17.3 V / ch.) Stereo 3: 75W x 2 (set to 15.0 V / ch.)...Stereo 3: 75W x 2 (set to 15.0 V / ch.) Stereo 2: 75W x 2 (set to 12.3 V / ch.)...Stereo 2: 75W x 2 (set to 12.3 V / ch.) Stereo 1.5: 75W x 2 (set to 10.6 V / ch.)..Stereo 1.5: 75W x 2 (set to 10.6 V / ch.) OPTIMUM CONFIGURATIONS (Stereo/Bridged): 1st Pair of Channels (Stereo) 2nd Pair of Channels (Bridged) Stereo 4: 75W x 2 (set to 17.3 V / ch.)...Bridged 8: 150W x 1 (set to 34.6 V) Stereo 3: 75W x 2 (set to 15.0 V / ch.)...Bridged 6: 150W x 1 (set to 30.0 V) Stereo 2: 75W x 2 (set to 12.3 V / ch.)...Bridged 4: 150W x 1 (set to 24.6 V) Stereo 1.5: 75W x 2 (set to 10.6 V / ch.)..Bridged 3: 150W x 1 (set to 21.2 V) OPTIMUM CONFIGURATIONS (Bridged/Bridged): 1st Pair of Channels (Bridged) 2nd Pair of Channels (Bridged) Bridged 8: 150W x 1(set to 34.6 V)...Bridged 8: 150W x 1 (set to 34.6 V) Bridged 6: 150W x 1(set to 30.0 V)...Bridged 6: 150W x 1 (set to 30.0 V) Bridged 4: 150W x 1(set to 24.6 V)...Bridged 4: 150W x 1 (set to 24.6 V) Bridged 3: 150W x 1(set to 21.2 V)...Bridged 4: 150W x 1 (set to 21.2 V)
SUB-OPTIMUM CONFIGURATIONS (Stereo/Bridged): First Pair of Channels (Stereo) 2nd Pair of Channels (Bridged) Stereo 8: 38W x 2 (set to 17.3V / ch.)..Bridged 16: 75W x 1 (set to 34.6V) Stereo 8: 38W x 2 (set to 17.3V / ch.)..Bridged 12: 100W x 1 (set to 34.6V) Stereo 8: 38W x 2 (set to 17.3V / ch.)..Bridged 8: 150W x 1 (set to 34.6V) Stereo 8: 25W x 2 (set to 15.0V / ch.)..Bridged 6: 150W x 1 (set to 30.0V) Stereo 8: 19W x 2 (set to 12.3V / ch.)..Bridged 4: 150W x 1 (set to 24.6V) Stereo 8: 14W x 2 (set to 10.6V / ch.)..Bridged 3: 150W x 1 (set to 21.2V) Stereo 4: 75W x 2 (set to 17.3V / ch.)..Bridged 16: 75W x 1 (set to 34.6V) Stereo 4: 75W x 2 (set to 17.3V / ch.)..Bridged 12: 100W x 1 (set to 34.6V) Stereo 4: 50W x 2 (set to 15.0V / ch.)..Bridged 6: 150W x 1 (set to 30.0V) Stereo 4: 38W x 2 (set to 12.3V / ch.)..Bridged 4: 150W x 1 (set to 24.6V) Stereo 4: 28W x 2 (set to 10.6V / ch.)..Bridged 3: 150W x 1 (set to 21.2V) Stereo 3: 75W x 2 (set to 15.0V / ch.)..Bridged 16: 50W x 1 (set to 30.0V) Stereo 3: 75W x 2 (set to 15.0V / ch.)..Bridged 12: 75W x 1 (set to 30.0V) Stereo 3: 75W x 2 (set to 15.0V / ch.)..Bridged 8: 100W x 1 (set to 30.0V) Stereo 3: 50W x 2 (set to 12.3V / ch.)..Bridged 4: 150W x 1 (set to 24.6V) Stereo 3: 38W x 2 (set to 10.6V / ch.)..Bridged 3: 150W x 1 (set to 21.2V) Stereo 2: 75W x 2 (set to 12.3V / ch.)..Bridged 16: 38W x 1 (set to 24.6V) Stereo 2: 75W x 2 (set to 12.3V / ch.)..Bridged 12: 50W x 1 (set to 24.6V) Stereo 2: 75W x 2 (set to 12.3V / ch.)..Bridged 8: 75W x 1 (set to 24.6V) Stereo 2: 75W x 2 (set to 12.3V / ch.)..Bridged 6: 100W x 1(set to 24.6V) Stereo 2: 56W x 2 (set to 10.6V / ch.)..Bridged 3: 100W x 1(set to 21.2V) Stereo 1.5: 75W x 2 (set to 10.6V / ch.)...Bridged 16: 28W x 1(set to 21.2V) Stereo 1.5: 75W x 2 (set to 10.6V / ch.)...Bridged 12: 38W x 1(set to 21.2V) Stereo 1.5: 75W x 2 (set to 10.6V / ch.)...Bridged 8: 56W x 1(set to 21.2V) Stereo 1.5: 75W x 2 (set to 10.6V / ch.)...Bridged 6: 75W x 1(set to 21.2V) Stereo 1.5: 75W x 2 (set to 10.6V / ch.)...Bridged 4: 112W x 1(set to 21.2V) SUB-OPTIMUM CONFIGURATIONS (Bridged/Bridged): First Pair of Channels (Bridged) 2nd Pair of Channels (Bridged) Bridged 16: 75W x 1 (set to 34.6V)...Bridged 16: 75W x 1 (set to 34.6V) Bridged 16: 75W x 1 (set to 34.6V)...Bridged 12: 100W x 1 (set to 34.6V) Bridged 16: 75W x 1 (set to 34.6V)...Bridged 8: 150W x 1 (set to 34.6V) Bridged 16: 50W x 1 (set to 30.0V)...Bridged 6: 150W x 1 (set to 30.0V) Bridged 16: 38W x 1 (set to 24.6V)...Bridged 4: 150W x 1 (set to 24.6V) Bridged 16: 38W x 1 (set to 21.2V)...Bridged 3: 150W x 1 (set to 21.2V) Bridged 12: 100W x 1 (set to 34.6V)..Bridged 12: 100W x 1 (set to 34.6V) Bridged 12: 100W x 1 (set to 34.6V)..Bridged 8: 150W x 1 (set to 34.6V) Bridged 12: 100W x 1 (set to 30.0V)..Bridged 6: 150W x 1 (set to 30.0V) Bridged 12: 100W x 1 (set to 24.6V)..Bridged 4: 150W x 1 (set to 24.6V) Bridged 12: 100W x 1 (set to 21.2V)..Bridged 3: 150W x 1 (set to 21.2V) Bridged 8: 100W x 1 (set to 30.0V)...Bridged 6: 150W x 1 (set to 30.0V) Bridged 8: 50W x 1 (set to 24.6V)...Bridged 4: 150W x 1 (set to 24.6V) Bridged 8: 50W x 1 (set to 21.2V)...Bridged 3: 150W x 1 (set to 21.2V) Bridged 6: 100W x 1 (set to 24.6V)...Bridged 4: 150W x 1 (set to 24.6V) Bridged 6: 100W x 1 (set to 21.2V)...Bridged 3: 150W x 1 (set to 21.2V)
SUB-OPTIMUM CONFIGURATIONS (Stereo/Stereo): 1st Pair of Channels (Stereo) 2nd Pair of Channels (Stereo) Stereo 8: 38W x 2 (set to 17.3 V / ch.)...Stereo 8: 38W x 2 (set to 17.3 V / ch.) Stereo 8: 38W x 2 (set to 17.3 V / ch.)...Stereo 6: 50W x 2 (set to 17.3 V / ch.) Stereo 8: 38W x 2 (set to 17.3 V / ch.)...Stereo 4: 75W x 2 (set to 17.3 V / ch.) Stereo 8: 28W x 2 (set to 15.0 V / ch.)...Stereo 3: 75W x 2 (set to 15.0 V / ch.) Stereo 8: 19W x 2 (set to 12.3 V / ch.)...Stereo 2: 75W x 2 (set to 12.3 V / ch.) Stereo 8: 14W x 2 (set to 10.6 V / ch.)...Stereo 1.5: 75W x 2 (set to 10.6 V / ch.) Stereo 6: 50W x 2 (set to 17.3 V / ch.)...Stereo 4: 75W x 2 (set to 17.3 V / ch.) Stereo 6: 38W x 2 (set to 15.0 V / ch.)...Stereo 3: 75W x 2 (set to 15.0 V / ch.) Stereo 6: 25W x 2 (set to 12.3 V / ch.)...Stereo 2: 75W x 2 (set to 12.3 V / ch.) Stereo 6: 19W x 2 (set to 10.6 V / ch.)...Stereo 1.5: 75W x 2 (set to 10.6 V / ch.) Stereo 4: 50W x 2 (set to 15.0 V / ch.)...Stereo 3: 75W x 2 (set to 15.0 V / ch.) Stereo 4: 38W x 2 (set to 12.3 V / ch.)...Stereo 2: 75W x 2 (set to 12.3 V / ch.) Stereo 4: 28W x 2 (set to 10.6 V / ch.)...Stereo 1.5: 75W x 2 (set to 10.6 V / ch.) Stereo 3: 50W x 2 (set to 12.3 V / ch.)...Stereo 2: 75W x 2 (set to 12.3 V / ch.) Stereo 3: 38W x 2 (set to 10.6 V / ch.)...Stereo 1.5: 75W x 2 (set to 10.6 V / ch.) Stereo 2: 56W x 2 (set to 10.6 V / ch.)...Stereo 1.5: 75W x 2 (set to 10.6 V / ch.)
16 JL AUDIO 300/4
APPENDIX C: TROUBLE SHOOTING
MY AMPLIFIER DOESNT TURN ON 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 +12V wire to the Remote terminal to see if the amplifier turns on. If this does not work, proceed to the next step. 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. I GET A DISTORTED / ATTENUATED SOUND COMING OUT OF THE SPEAKER(S) Check the speaker wires for a possible short, either between the positive and negative or between a speaker lead and the vehicles chassis ground. If a short is present you will experience distorted and/or attenuated output.The Low light may also illuminate in this situation. It may be helpful to disconnect the speaker wires from the amplifier and use a different set of wires connected to a test speaker. Check the nominal load impedance to verify that each channel of the amplifier is driving a load between 1.5 - 4 (3 - 8 bridged). Check the input signal and input signal cables to make sure signal is present at the Front Input Section and Rear Input Section and the cables are not pinched or loose. It may be helpful to try a different set of cables and/or a different signal source to be sure. MY AMPLIFIER SHUTS OFF ONCE IN A WHILE, USUALLY AT HIGHER VOLUMES Check your voltage source and grounding point.The R.I.P.S. power supply is rated to operate with source voltages between 11 - 14.5V. Shutdown problems at higher levels can occur when the charging system voltage drops below 10 volts.These dips can be of very short duration making them extremely difficult to detect with a common DC voltmeter.To ensure proper voltage, inspect all wiring and termination points. It is also a good idea to improve the vehicles factory ground wire and termination point. Grounding problems are the leading cause of mis-diagnosed amplifier failures.
For Service Information in the U.S.A. please call: JL Audio customer service: (954) 443-1100 during normal business hours (9:00 AM 5:30 PM Eastern Time) JL Audio, Inc 10369 North Commerce Pkwy. Miramar, FL 33025 (do not send product for repair to this address) International Warranties: Products purchased outside the United States of America are covered only by that countrys distributor and not by JL Audio, Inc.
Absolute Symmetry Class AB Amplifier Circuit is covered by U.S. Patent #6,294,959 and is pending in the countries listed below. Austria, Belgium, Brazil, Canada, China, France, Germany, Indonesia, Italy, Japan, Republic of Korea, Mexico, Netherlands, Norway, Russian Federation, Singapore, Sweden, Switzerland, United Kingdom, and all other PCT countries. JL3004MAN-04-2003
Aftermarket Head Unit
Vicious Bass, Smoooth Mids, Sweeet Highs!
300/4 XR650-CS (Left Front) XR650-CS (Right Front)
XR650-CX (Left Rear) HO115R-W3 (Subwoofer)
XR650-CX (Right Rear)
RCA Cable (pair) Speaker Wire Remote Lead
Make your inner-child run screaming with the awesome output and quality of the HO115R-W3 high-output subwoofer enclosure. It's patented design and chamber-coupled slotports make for huge bass from the single 15W3. Powered by a 500/1 this is a potent subwoofer system for the true enthusiast. Keeping it clean on the front end are XR650-CS and CX speaker systems with outboard, high-end crossover networks. A 300/4 drives these with 4-ohm optimized power. This system is shown with a simple 2-channel line-level out from the head unit and a pass-through connection from the 500/1 to the 300/4's inputs. An optional RBC-1 can be added to control the 500/1's bass EQ boost, if desired.
Recommended initial amplifier settings for this system.
Set "Infrasonic Freq." to "30" Set Q to "1.6" Set "Center Freq." to "60" (24 clicks) Adjust "Boost" to "+3" initially Set "Filter Freq." to "80" (24 clicks) Adjust "Input Sens." to achieve desired output level from subwoofer
Connect to Front Input of 300/4 Amplifier
This section is not used in this application
Connect to Optional RBC-1 Bass Control
Connect to head unit line level output
Connect to HO115R-W3
Set Rear "Filter Freq." to 80 Hz (15 clicks)
Adjust Rear "Input Sens." to achieve desired output level from rear speakers
Set Front "Filter Freq." to 80 Hz (15 clicks)
Adjust Front "Input Sens." to achieve desired output level from front speakers
Rear inputs not used in this application
Connect to crossover network inputs for XR650-CX (rear speakers)
Connect to 500/1 preamp outputs
Connect to crossover network inputs for XR650-CS (front speakers)
Note: These settings are intended as a baseline for tuning this system. Depending on the vehicle and the customers tastes, some variation in the crossover and bass control settings may be necessary for optimum performance.
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