EFTA02705326.pdf

OWNER'S MANUAL XD600/1 600W Monoblock Subwoofer Amplifier Nex SWITCHING TICHNOLOGr Thank youfor purchasing a IL Audio amplifierfor your automotive sound system. Your amplifier has been designed and manufactured to exacting standards in order to ensure years ofmusical enjoyment in your vehicle. For maximum performance, we highly recommend that you have your new amplifier installed by an authorized11. Audio dealer. Your authorized dealer has the training, expertise and installation equipment to ensure optimum performancefrom this product. Should you decide to install the amplifier yourself, please take the time to read this manual thoroughly so as tofamiliarize yourself with its installation requirements and setup procedures. Ifyou have any questions regarding the instructions in this manual or any aspect ofyour amplifier's operation, please contact your authorized JL Audio dealerfor assistance. Ifyou needfurther assistance, please call the JL Audio Technical Support Department at (954)443-1100 during business hours. EFTA_R1_02095275 EFTA02705326 PROTECT YOUR HEARING! INSTALLATION APPLICATIONS We value you as a long-term customer. For This amplifier is designed for operation in that reason, we urge you to practice restraint in vehicles with 12 volt, negative-ground electrical the operation of this product so as not to damage systems. Use of this product in vehicles with your hearing and that of others in your vehicle. positive ground and/or voltages other than 12V Studies have shown that continuous exposure to may result in damage to the product and will void high sound pressure levels can lead to permanent the warranty. (irreparable) hearing loss. This and all other This product is not certified or approved for high-power amplifiers are capable of producing use in aircraft. such high sound pressure levels when connected Do not attempt to 'bridge" the outputs of this to a speaker system. Please limit your continuous amplifier with the outputs of a second amplifier, exposure to high volume levels. including an identical one. 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 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: Infrasonic Filter Filter eater Status Mode/Slope Frequency Selection LED Selection Selector 1pq 91 (pg. 8) (pg 8) L Input Sensitivity Control inn = 1 JL AUDIO, X0 6 00/1 seneraer Ureter. MOnOblotk SubwOOler AMplif ter raw mmkrUpw 0 % DV Pike len Oral (0 .) oSubereele•Outpur to 0O 0 0 0 0, •I2VDC e O O 2 1 1L Audio - X0600/I Owner's Manual EFTA_R1_02095276 EFTA02705327 PLANNING YOUR INSTALLATION AIMPORTANT It is important that you take the time to read Mounting the amplifier upside down is this manual and that you plan out your strongly discouraged. installation carefully. The following are some considerations that you must take into account If mounting the amplifier under a seat, when planning your installation. make sure there is at least 1 inch (2.5 cm) of r space above the amplifier's outer shell to permit z Cooling Efficiency Considerations: proper cooling. r- The outer shell of your 11. Audio amplifier is designed to remove heat from the amplifier Safety Considerations: circuitry. For optimum cooling performance, Your amplifier needs to be installed in a dry, this outer shell should be exposed to as large a well-ventilated environment and in a manner volume of air as possible. Enclosing the amplifier which does not interfere with your vehicle's safety in a small, poorly ventilated chamber can equipment (air bags, seat belt systems, ABS brake lead to excessive heat build-up and degraded systems, etc.). You should also take the time to performance. If an installation calls for an securely mount the amplifier so that it does not enclosure around the amplifier, we recommend come loose in the event of a collision or a sudden that this enclosure be ventilated with the aid jolt to the vehicle. of a fan. In normal applications, fan-cooling is not necessary. Stupid Mistakes to Avoid • Check before drilling any holes in your vehicle to make sure that you will not be drilling through a gas tank, brake line, wiring harness or other vital vehicle system. • Do not run system wiring outside or underneath the vehicle. This is an extremely dangerous practice which can result in severe damage to your vehicle and person. • Protect all system wires from sharp metal edges and wear by carefully routing them, tying them down and using grommets and loom where appropriate. • Do not mount the amplifier in the engine compartment, under the vehicle, on the roof or in any other area that will expose the amplifier circuitry to the elements. Chassis Ground Left & Right Connector PreampI put Jacks (PS 5) (pg. 7) lac (or +12 V Posing Remote Tum-On Left & Right Rernot Level Mono Connector Connector Preamp Output lacks Control Knob Subwooler Outputs (PS 5) (p9.6) (09 10) (P9 9) 1pg. 10) (a oo0) .12VDC Wound Antote W Meno Svter,exilraCIVIP+1 XICPSOO/1 3 EFTA_R1_02095277 EFTA02705328 PRODUCT DESCRIPTION 1 he XL)600/1 is a monoblock 6) Find a good, solid metal grounding point amplifier utilizing IL Audio Nee high close to the amplifier and connect the speed switching technology to deliver negative power wire to it using appropriate outstanding fidelity and efficiency. hardware (use of the IL Audio ECS master The XD600/1 can be operated with a wide ground lug, XB-MGLU is recommended). variety of source units and system configurations. Use 4 AWG wire, no longer than 36 inches Its frequency response is limited to the range (90 cm) from the amplifier to the ground below 500 Hz. It is not designed for driving connection point. In some vehicles, it may be midrange speakers or tweeters. Every aspect of its necessary to upgrade the battery ground wire. operation has been optimized for low-frequency (See page 5 for important notice). amplification. For detailed specifications, please 7) Securely mount the amplifier. refer to Appendix C (page 13). 8) Connect the positive and negative power wires to the amplifier. A fuse near TYPICAL INSTALLATION SEQUENCE the amplifier is not necessary if the The following represents the sequence XD600/1 is the only device being run for a typical amplifier installation, using an from the fused main power wire. If aftermarket source unit or OEM Interface the fused main power wire is shared processor (like the CleanSweep CL441dsp). by the XD600/1 and other amplifiers Additional steps and different procedures may or devices, fuse each amplifier/device be required in some applications. If you have within 12 inches (30 cm) of wire length, any questions, please contact your authorized via a fused distribution block or multiple IL Audio dealer for assistance. individual fuse blocks/on-board fuses. 9) Connect the remote turn-on wire I) Disconnect the negative battery post to the amplifier. connection and secure the disconnected cable 10) Connect the input cables to the amplifier. to prevent accidental re-connection during 11) Connect the speaker cables to the amplifier. installation. This step is not optional. 12) Carefully review the amplifier's control 2) Run 4 AWG power wire from the battery settings to make sure that they are set location to the amplifier mounting location, according to the needs of the system. taking care to route it in such a way that it 13) Install the power wire fuse (50A for a will not be damaged and will not interfere single XD600/1) and reconnect the negative with vehicle operation. Use 4 AWG or larger battery post terminal. Install the fuse (50A) power wire and a power distribution block if near the amplifier (if applicable). additional amplifiers are being installed with 14) Turn on the source unit at a low level the XD600/1. to double-check that the amplifier is 3) Connect power wire to the positive battery configured correctly. Resist the temptation post. Fuse the wire with an appropriate fuse to crank it up until you have verified the block (and connectors) within 18 inches (45 control settings. cm) wire length of the positive battery post. 15) Make necessary adjustments to the input This fuse is essential to protect the vehicle. sensitivity controls to obtain the right Do not install the fuse until the power wire overall output and the desired balance has been securely connected to the amplifier. in the system. See Appendix A (page 12) 4) Run signal cables and remote turn-on wire for the recommended input sensitivity from the source unit to the final amplifier setting method. mounting location. 16) Enjoy the fruits of your labor with your 5) Run speaker cables from the speaker systems favorite music. to the amplifier mounting location. 4 1 1L Audio - X0600/I Owner's Manual EFTA_R1_02095278 EFTA02705329 POWER CONNECTIONS Before installing the amplifier, disconnect the The ground connection should be made negative (ground) wire from the vehicle's battery. using 4 AWG wire and should be kept as short This will prevent accidental damage to the system, as possible, while accessing a solid piece of sheet the vehicle and your body during installation. 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 z between the chassis and the termination of 0 r the ground wire. For optimal grounding, we recommend the use of a JL Audio ECS master ground lug (XB-MGLU). Alternatively, a sheet „o( XO6OO/1 4 metal screw or bolt can be used with a star washer. Any wires run through metal barriers (such as firewalls), must be protected with a high quality rubber grommet to prevent damage to the The XD600/1's "+12 VDC" and "Ground" insulation of the wire. Failure to do so may result connections are designed to accept 4 AWG in a dangerous short circuit. power wire. 4 AWG is the required wire size for this amplifier. IIIMPORTANT_I If you are installing the XD600/1 with other amplifiers and wish to use a single main power Many vehicles employ small (10 AWG wire, use 2. AWG or 1/0 AWG main power wire 6 AWG) wire to ground the battery to the (depending on the overall current demands of all vehicle chassis and to connect the alternator's the amplifiers in the system). This 2 AWG or positive connection to the battery. To prevent 1/0 AWG power wire should terminate into a voltage drops, these wires should be upgraded fused distribution block mounted as close to to 4 AWG when installing amplifier systems the amplifiers as possible (within 12 inches / with main fuse ratings above 60A. 30cm of wire length). The fused output of the distribution block will connect to the XD600/1 FUSE REQUIREMENTS with 4 AWG power wire. JL Audio ECS It is absolutely vital that the main power fused distribution blocks are recommended wire(s) to the amplifier(s) in the system be (XD-FDBU-2 and XD-FDBU-4) fused within 18 inches (45 cm) of the positive battery post connection. The fuse value at each Note: Smaller AWG numbers mean bigger power wire should be high enough for all of the wire and vice-versa (1/0 AWG is the largest, 2 equipment being run from that power wire. If AWG is smaller, then 4 AWG, then 8 AWG, etc.). only the XD600/1 is being run from that power wire, use a 50A fuse. To connect the power wires to the amplifier, If fusing the amplifier near its power first back out the set screw on the top of the connections (when more than one amp is being terminal block, using the supplied 2.5 mm hex run from the main power wire), use a 50A fuse wrench. Strip 1/2 inch (12 mm) of insulation from (MAXI" big plastic-body fuse is recommended). the end of each wire and insert the bare wire into the terminal block, 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. 5 EFTA_R1_02095279 EFTA02705330 TURN-ON LEAD 1 he X1)600/1 uses a conventional +12V remote turn-on lead, typically controlled by the source unit's remote turn-on output. 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 remote turn-on output, the amplifier's turn-on lead can be connected to +12V via a switch that derives power from an ignition-switched circuit. The XD600/1's "Remote" turn-on connector is designed to accept 18 AWG - 12 AWG wire. To connect the remote turn-on wire to the amplifier, first back out the set screw on the top of the terminal block, using the supplied 2.5 mm hex wrench. Strip 1/2 inch (I2mm) of wire and insert the bare wire into the terminal block, seating it firmly so that no bare wire is exposed. While holding the wire in the terminal, tighten the set screw firmly, taking care not to strip the head of the screw and making sure that the wire is firmly gripped by the set screw. 0 0 O: vX CoartiO Runan. X060011 C 6 1 1L Audio - X0600/I Owner's Manual EFTA_R1_02095280 EFTA02705331 INPUT SECTION INPUT SENSITIVITY CONTROLS 1 he XO600/ input section allows The control labeled "Input Sens." can be used you to send signal to the amplifier section to match the source unit's output voltage to the through the use of two differential- input stage the XD600/l for maximum clean balanced inputs, one for the left channel output. Rotating the control clockwise will result signal and one for the right channel signal. in higher sensitivity (louder for a given input rn Connection is via RCA-type jacks. voltage). Rotating the control counter-clockwise z will result in lower sensitivity (quieter for a given ci r— input voltage.) 'C Win In —s Pang Wi 00 Nat tin I04 You may run a stereo or a mono signal into the inputs of the amplifier. The amplifier's input section automatically sums stereo signals to mono a for the internal amplifier section. The amplifier will operate with only one input connection (left or right), but will require an increase in input To properly set the amplifier for maximum sensitivity to overcome the loss of signal. If a clean output, please refer to Appendix A (page mono input signal is to be run, we recommend 12) in this manual. After using this procedure. that you use a "Y-adaptor" to split the mono you can then adjust the "Input Sens." levels signal into both inputs of the amplifier. downward if this is required to achieve the desired system balance. Input Voltage Range: The XO600/ I's input section is designed to Do not increase any "Input Sens." setting for accept signal voltages from I0OmV - 4V. This any channel(s) of any amplifier in the system will accommodate all preamp level signals and beyond the maximum level established during many speaker level signals. the procedure outlined in Appendix A (page 12). To use speaker-level sources, simply splice the Doing so will result in audible distortion and speaker output wires of the source unit onto a possible speaker damage. pair of RCA plugs for each input pair. (or use IL Audio pan XD-CLRAIC2-SW) No "line output converter" is needed in most cases. If you find that the output cannot be reduced sufficiently with a direct speaker level signal applied to the amplifier, you may use a "line output converter or voltage divider to reduce the signal level. 7 EFTA_R1_02095281 EFTA02705332 FILTER CONTROLS Most speakers are not designed to reproduce Tuning Hint: A trunk mounted sub whose the full range of frequencies audible by the human output has to "fight" through a rear deck or a ear. For this reason, most speaker systems are back seat often benefits from the 12 dB/octave comprised of multiple speakers, each dedicated slope which lets more upper bass content pass to reproducing a specific frequency range. Filters through. A sub that fires directly into the are used to select which frequency range is sent listening environment is more likely to benefit to each section of a speaker system. The division from a 24 dB/octave slope. of frequency ranges to different speakers can be done with passive filters (coils and/or capacitors Note: The above hint is not "set-in-stone"... between the amplifier outputs and the speakers). You should always listen to the system carefully to which are acceptable and commonly used determine the best choice as vehicle acoustics and for filtering between mid-range speakers and other factors play a big role in choosing the most tweeters. Filtering between subwoofer systems appropriate filter slope. and satellite speaker systems is best done with active filters, which cut off frequency content at 3) Precise Frequency Selection: The filter the input to the amplifier. Active filters are more frequency markings on the front panel of stable than passive filters and do not introduce the amplifier are for reference purposes and extraneous resistance, which can degrade are generally accurate to within 1/3 octave subwoofer performance. or better. If you would like to select the filter The active low-pass filter built into frequency with a higher level of precision, the XD600/1 is designed to attenuate consult Appendix B (page 13) of this manual. frequencies above its filter frequency, This chart gives you a more accurate frequency so that the system's subwoofers do not for each of the forty detented positions of the reproduce any audible midrange content. frequency selection control. This method can This serves to improve tonal balance be very useful if the amplifier is mounted in and to avoid distortion. Correct use a location where you can't see the front panel of the filter can substantially improve markings easily. the fidelity ofyour audio system. 4) Defeating the LP Filter: The Low-Pass filter can also be defeated completely, by switching the "LP Filter Mode/Slope" switch to the Stant* 1*- Fuer MONISM "Off" position. This is useful if you are using an external active crossover in the system. Of] Oa 4,0k With the internal crossover turned off, the XD600/l's upper frequency response limit is 500 Hz, due to its subwoofer-specific design. 2) LP Filter Operation: The low•pass filter in the XD600/I is fully variable between 50 Hz and 500 Hz via the "Filter Freq: control knob and features the ability to select between a moderate "l2dB" per octave or a steep "24dB" per octave slope via the "LP Filter Mode/Slope" switch. Depending on the subwoofer system and the vehicle, different slopes may be required to produce a smooth transition to the mid- bass speakers in the system. Experiment to find the slope which best matches the acoustic requirements of your system. 8 1 1L Audio - X0600/I Owner's Manual EFTA_R1_02095282 EFTA02705333 INFRASONIC FILTER REMOTE LEVEL CONTROL (OPTIONAL) The "Infrasonic Filter" is a 24 dB/octave high- pass filter, with a fixed cutoff frequency of 30 Hz. This filter is designed to conserve amplifier power and protect subwoofer systems, without audibly degrading the sub-bass output. r_ With the addition of the optional Remote I- Level Control (HD-RLC), you can control the subwoofer volume from the front of the vehicle. The HD-RLC connects to the jack labeled "Remote Level Control" on the Connection Panel of the amplifier using a standard telephone cable (supplied with the HD-RLC). If desired, multiple With ported enclosures, the use of the XD (and HD) amplifiers can be controlled from "Infrasonic Filter" is highly recommended to a single HD-RLC controller using a simple phone protect the speaker(s) from excessive excursion line "splitter" and multiple phone cables. below box tuning. When connected to the amplifier, the With sealed enclosures, the use of the filter HD-RLC operates as follows. At full counter- is less necessary, but can still help protect the clockwise rotation, the audio will mute speaker system from excessive excursion. completely. At full clockwise rotation the level The "Infrasonic Filter" can be completely will be the same as if the HD-RLC was not defeated by selecting the "or position on its connected at all. In other words, it operates switch. This bypasses all signal from flowing strictly as a level attenuator. through the circuit. 9 EFTA_R1_02095283 EFTA02705334 PREOUTS SUBWOOFER OUTPUTS The XO600/1 incorporates a pass-through The XO600/1 is designed to deliver power into preamp output section, so that additional subwoofer loads equal to or greater than 2 ohms. amplifiers can be easily added to the system. The XD600/1's subwoofer outputs are The preamp output delivers the same signal that designed to accept 16 AWG - 8 AWG wire. To is connected to the XD600/l's inputs. connect the subwoofer wires to the amplifier, first back out the set screws on the top of the terminal block, 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 terminal block, 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. Inpvts Ar KeaI. The preamp output signal by any crossover filter selected (if the input signal is full-range, the 0 o 00. O O preamp output will be full-range). Wona tutswolg• Output IMPORTANT If you plan to use the "Preouts" to feed You will notice that there are two "+" positive a stereo amplifier, you must connect a connections and two "-" negative connections. stereo signal to the input of the amplifier. This is to facilitate multiple subwoofer wiring. A mono signal into the amplifier will result The two positive and two negative connections in a mono signal out of the preamp output. are connected in parallel inside the amplifier They are not stereo outputs. Connecting two subwoofers, each to one set of positive and negative terminals, will result in a parallel subwoofer connection. If only connecting one pair of subwoofer wires, it is not necessary to use both sets of connections. IIIMPORTANT Subwoofer loads below 2 ohms nominal are not recommended and may cause the amplifier to initiate a protection mode which reduces power output. 10 1 1L Audio - X0600/I Owner's Manual EFTA_R1_02095284 EFTA02705335 STATUS LED / PROTECTION CIRCUITRY 'There is a single multi-color LED on the top 5) LED off / Amplifier Shuts Off Unexpectedly surface of the amplifier to indicate the amplifier's The only condition that will shut down operating status. an undamaged XD600/1 completely is if battery voltage or remote turn-on voltage drops below 10 volts. The "Status LED" will turn off when this occurs. The amplifier will turn back on z when voltage climbs back above 11 volts. If this 0 r is happening in your system, have your charging system and power wiring inspected. et .-P 7 to For more information on troubleshooting this rigr. I • • amplifier, refer to Appendix D (pages 14, 15). 1) Flashing Green: amplifier is powering up, audio output is muted. SERVICING YOUR IL AUDIO AMPLIFIER 11your amplifier fails or malfunctions, please 2) Constant Green: amplifier is on and return it to your authorized JL Audio dealer so functioning normally, audio output is active. that it may be sent in to JL Audio for service. There are no user serviceable parts or fuses inside 3) Constant Red: lights to indicate that the the amplifier. The unique nature of the circuitry amplifier has exceeded its safe operating in the ►L Audio amplifiers requires specifically temperature, putting the amplifier into a trained service personnel. Do not attempt self-protection mode, which reduces the to service the amplifier yourself or through peak power output of the amplifier. When its unauthorized repair facilities. This will not only temperature returns to a safe level, the red void the warranty, but may result in the creation light will return to green and the amplifier will of more problems within the amplifier. return to full-power operating mode. If you have any questions about the installation or 4) Constant Amber (yellow): Indicates setup of the amplifier not covered in this manual, that an over-current condition has occurred and please contact your dealer or technical support. is accompanied by a muting of the amplifier's output. Because the muting behavior may be JL Audio Technical Support very short in duration, it may manifest itself as (954) 443-1100 an audible, repetitive ticking or thumping noise 9:00 AM - 5:30 PM (Eastern Time Zone) in the output. Over-current conditions can be Monday - Friday caused by a speaker impedance lower than the optimum load impedance range for the amplifier or a short-circuit in the speaker wiring. The latter can result from a short circuit between the positive and negative speaker wires or between either speaker wire and the vehicle chassis. The "Status LED" will remain amber for a few seconds, even if the over-current condition is of a very short duration. I1 EFTA_R1_02095285 EFTA02705336 APPENDIX A: Input Sensitivity Level Setting 8) Increase the "Input Sens." control until the Following the directions below will allow the target voltage is observed with the voltmeter. installer to adjust the input sensitivity of each 9) Once you have adjusted the XD600/1 to amplifier channel pair simply and easily in just a its maximum low-distortion output level, few minutes using equipment which is commonly reconnect the speaker(s). The "Input Sens." available in installation hays. controls can now be adjusted downward if the amplifier requires attenuation to achieve the Necessary Equipment desired system balance. • Digital AC Voltmeter • CD with a sine-wave test tone recorded at IIIMPORTANT 0 dB reference level in the frequency range to be amplified %r that set of channels Do not increase any "Input Sens." setting for (50 Hz for subwoofer channels, 1 kHz for a any amplifier channel or channel pair in the midrange application). Do not use attenuated system beyond the maximum level established test tones (-10 dB, -20 dB, etc.). during this procedure. Doing so will result in audible distortion and possible speaker damage. The Nine-Step Procedure I) Disconnect the speaker(s) from the It will be necessary to re-adjust the amplifier's speaker output connectors. "Input Sens." if any equalizer boost is activated 2) Turn off all processing (bass/treble, loudness, after setting the "Input Sens." with this EQ, etc.) on the source unit, processors (if procedure. This applies to any EQ boost circuit, used) and amplifier. Set fader control to center including source unit tone controls or EQ position and subwoofer level control to 3/4 of circuits. EQ cuts will not require re-adjustment. maximum (if used to feed the XD600/1). 3) Turn the amplifier's "Input Sent" control all Nom. Impedance Target AC Voltage the way down. 4) Set the source unit volume to 3/4 of full 40 40.0 V volume. This will allow for reasonable gain 30 37.3 V overlap with moderate clipping at full volume. 34.6 V 5) Using the chart on this page, determine the target voltage for input sensitivity adjustment according in Not Recommended 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 by the XD600/l) 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 -). 12 1 1L Audio - XO600/I Owner's Manual EFTA_R1_02095286 EFTA02705337 APPENDIX B: APPENDIX C: Precise Frequency Selection Chart XD600/1 Specifications "FILTER FREQ" AMP FILTER General Specifications: Detent Panel Actual Number Marking Freq. Recommenceo Aux \iota: 50A Full counter-clockwise: 53 Recommended Fuse Type,. MAXI' or AGU rn 01 53 z 02 '50" 53 Input Sections: 0 r 03 54 No. of Inputs: One Stereo Pair 04 S4 Input Type: Differential-balanced with RCA jack inputs 05 55 Input Range: 100mV- 4V MSS 06 57 07 59 Amplifier Section: 08 '60" 61 Amplifier Topology: NexOw High Speed Class D 09 63 Power Supply: Unregulated MOSFE T switching type 10 65 11 67 Rated Power at 14.4V with less than 12 70 1% THD+Noise (20Hz - 20 kHz) 13 72 400W RMS x 1 @ 4 ohms 14 75 600‘,V RIMS x 1 @ 2 ohms 15 78 Rated Power 0112.51/ with less than 16 '80" 81 1% THD + Noise (2014z -20 kHz) 17 85 300W AMS x 1@ 4 ohms 18 88 19 93 500W RMS x 1 @ ohms Signal to Noise Ratio: 20 '12 o'clock" 97 21 102 >87 dB referred to rated power 22 107 (A-weighted, 20 Hz-20 kHz noise bandwidth) 23 113 >67 dB referred to 1W 24 "120' 120 (A-weighted, 70 Hz-20 kHz noise bandwidth) 25 127 Frequency Response: 7 Hz - 500 Hz (+0, -1dB) 26 135 Damping Factor: 27 144 >1000@4 ohms/50Hz 28 156 >5000 2 ohms / 50 Hz 29 169 30 184 Amplifier Filters: 31 203 "200' 227 Amplifier Low-Pass Filter: 32 33 254 State-variable, 12 dB/octave Butterworth or 24 dB/octave 34 290 Linkwitz-Riley with continuously variable cutoff frequency 35 337 selection from 50 - 500 Hz (defeatable). 36 392 Infrasonic Fitter: 37 426 24 dB/octave Butterworth 0 30 Hz (defeatable). 38 `50091 447 39 467 Preamp Output: Full-dodavlse: 470 Buffered pass-through type. Dimensions(LxWxH): 8.52- x 7.09' x 2.05° (217mm x 180mm x 52mm) Due to ongang rofmix( development all ypecillcatom ye so4e0 10 lunge v.irhow naive. 13 EFTA_R1_02095287 EFTA02705338 APPENDIX D: TROUBLESHOOTING "How do I properly set the input sensitivity on my amplifier?" Please refer to Appendix A (page 12) to set 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. "I hear 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 "Status LED" will turn amber 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 of the amplifier is driving a load equal to or greater than 2 ohms. "My amplifier's output fluctuates when I tap on it or hit a bump."