Mackie SWA1801z User's Manual
Contents
1. 500 1k 2k 5k 10k 20k Frequency Hz SWA1801z Limited Warranty Please keep your sales receipt in a safe place A LOUD Technologies Inc warrants all materials workman ship and proper operation of this product for a period of three years from the original date of purchase You may purchase an additional 24 month Extended Warranty for a total of 60 months of coverage Visit our website and follow the Product Registration links for details www mackie com If any defects are found in the materials or workmanship or if the product fails to function properly during the applicable warranty period LOUD Technologies at its option will repair or replace the product This warranty applies only to equipment sold and delivered within the U S and Canada by LOUD Technologies Inc or its authorized dealers B For faster processing not to mention a free gift register online or mail in the product registration card C Unauthorized service repairs or modification of Mackie products will void this warranty To obtain repairs or replace ment under warranty you must have a copy of your sales receipt from the authorized Mackie dealer where you pur chased the product It is necessary to establish purchase date and determine whether your Mackie product is within the warranty period D To obtain warranty repair or replacement 1 Call Mackie Technical Support at 800 898 3211 7 AM to 5 PM Monday through Friday Pacific Tim2. Stereo Power Amplifier SWA1801z SWA1801z Power Plays the Low me Plays the Low Cord Frequencies Frequencies 2 SWA1801Zs WITH STEREO AMPLIFIER AND 2 C300Zs C300z C300z Plays the Mid and Plays the Mid and High Freguencies High Freguencies SWA1801z Plays the Low Frequencies INN Line Level Hi Pass Out Stereo Power Amplifier 1 SWA1801z WITH 2 SRM450s 1 SWA1801z WITH STEREO AMPLIFIER AND 2 C3007s CONNECTIONS The SWA1801z has two female XLR inputs that accept a balanced line level signal When connect ing a balanced signal be sure it s wired per AES Audio Engineering Society standards XLR Hot Pin 2 Cold Pin 3 Shield Ground Pin 1 Balanced XLR Connectors If connecting an unbalanced signal to the SWA1801z balanced input be sure that the signal high hot connection is wired to Pin 2 and the unbalanced ground connection is wired to the low and the ground connections of the balanced input Pins 3 and 1 If there are ground loop problems try connecting the unbalanced ground connection only to the input low connection Pin 3 and leaving the input ground connection dis connected There are also four male XLR connectors la beled THRU FULL RANGE
3. gt AC POWER Be sure the SWA1801z is plugged into an outlet that is able to supply the correct voltage specified for your model If the voltage should drop below 97 of the specified line voltage the built in amplifiers will no longer be able to supply rated power They will continue to operate down to 80 of the rated line voltage but won t reach full power resulting in lower headroom Be sure the electrical service can supply enough amperage for all the components con nected to it We recommend that a stiff robust supply of AC power be used because the amplifiers place high current demands on the AC line The more power that is available on the line the louder the speakers will play and the more peak output power will be available for cleaner punchier bass A suspected problem of poor bass performance is often caused by a weak AC supply to the ampli fiers Never remove the ground pin on the power cord of the SWA1801z or any other EE 2 E E gerous component This is very dan THERMAL CONSIDERATIONS The SWA1801z has a powerful 800 watt am plifier built in As amplifiers produce heat it is important to dissipate the heat as quickly as possible This results in increased reliability and longevity for the amplifier The amplifier module is mounted on a large heatsink which is cooled by convection where cool air is drawn through it s fins carrying the heat away In order for this con
4. nent hearing loss Individuals vary considerably in suscepti bility to noise induced hearing CONTENTS Lend Me Your Ears INTRODUCTION REAR PANEL DESCRIPTION HOOKUP DIAGRAMS loss but nearly everyone will lose some hearing if CONNECTIONS PLACEMENT exposed to sufficiently intense noise for a period of time The U S Government s Occupational Safety and Health Administration OSHA has specified the per missible noise level exposures shown in this chart THERMAL CONSIDERATIONS According to OSHA any exposure in excess of SERVICE INFORMATION these permissible limits could result in some hearing loss To ensure against potentially dangerous exposure to high sound pressure levels it is recommended that all persons exposed to equipment capable of produc ing these levels use hearing protectors while this unit is in operation Ear plugs or protectors in the ear ca nals or over the ears must be worn when operating this amplification system in order to prevent a permanent hearing loss if exposure is in excess of the limits set forth here Duration per Sound Level dBA day in hours Slow Response Typical Example I8 90 Duo in small dub ES M es 49S Subway iaa SSS y O EA E ooo A Mo AE 1 105 Fooyoung screaming at desTROYer about deadlines pos ee INTRODUCTION Thank you for choosing Mackie s active sound re inforcement speaker systems The SWA1801z is a high output active subwoofer system It feature
5. 4 dBu input signal Use this as a starting point for setting the balance between the subwoofer and the main speakers O PHASE This switch reverses the polarity of the sub woofer output Depending on the placement of the SWA1801z subwoofer relative to the full range speakers you may get a better low frequency re sponse in the room if you reverse the polarity of the subwoofer s signal Experiment with this switch to determine which position sounds best SIGNAL THERMAL POWER e e o SUBWOOFER HIGH PASS THRU FULL RANGE CONTROL MID HIGH FREQ FULL RANGE OUTPUT INPUT OUTPUT HOOKUP DIAGRAMS 5A1521z SA1521z Plays the Mid and Plays the Mid and High Frequencies High Frequencies Line Level Line Level Mid High Mid High Out Left Out Right SWA1801z SWA1801z Plays the Low Power Plays the Low Power Freguencies Cords Freguencies Cords 2 SWA1801Zs WITH 2 5A15217s SRM450 SRM450 Plays the Mid and Plays the Mid and High Frequencies High Frequencies Line Level Line Level Hi Pass Hi Pass Out L rj SWA1801z Plays the Low Frequencies C300z C300z Plays the Mid and Plays the Mid and High Freguencies High Freguencies
6. INSIDE REFER SERVICING TO QUALIFIED PERSONNEL A The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons user of the presence of important operating and maintenance servicing instructions in the literature accompanying the appliance AN The exclamation point within an equilateral triangle is intended to alert the Correct Disposal of this product This symbol indicates that this product should not be disposed of with your household waste according to the WEEE Directive 2002 96 EC and your national law This product should be handed over to an authorized collection site for recycling waste electrical and electronic equipment EEE Improper handling 2 ZX of this type of waste could have a possible negative impact on the environment and human health due to potentially hazardous substances that are generally associated with EEE At the same time your cooperation in the correct disposal of this product will contribute to the effective usage of natural resources For more information about where you can drop off your waste IE equipment for recycling please contact your local city office waste authority or your household waste disposal service Lend Me Your Ears Exposure to extremely high noise levels may cause perma
7. switch on If not try turning it on e Is the POWER LED on the rear panel glowing green If not make sure the AC outlet is live If so refer to No sound next e The internal AC line fuse may be blown This is not a user serviceable part If you suspect the AC line fuse is blown please see the Repair section on page 9 No sound e Is the input LEVEL control for the input source or the subwoofer turned all the way down Verify that all the volume controls in the system are properly adjusted e Is the signal source working and making union scale Make sure the connecting cables are in good repair and securely con nected at both ends Make sure the output volume gain control on the mixing console is turned up sufficiently to drive the inputs of the speaker e Make sure the mixer does not have a Mute on or a Processor loop engaged If you find something like this make sure the volume gain is turned down before disengaging the offending switch e Is the thermal protection circuit activated Make sure there is at least six inches of free space behind the SWA1801z Poor bass performance e Check the polarity of the connections between the mixer and the loudspeakers You may have your positive and negative connections reversed at one end of one cable causing one loudspeaker to be out of phase e Try switching the PHASE switch on the rear panel This affects the polarity between the full range speakers and the SWA
8. 1801z and may improve the low frequency response Poor sound e Is it loud and distorted Make sure that you re not overdriving a stage in the signal chain Verify that all level controls are set properly e Is the input connector plugged completely into the jack Be sure all connections are se cure It s a good idea to periodically clean all electrical connections with a non lubricating electrical contact cleaner Noise e Make sure all connections to the active loud speakers are good and sound e Make sure none of the signal cables are routed near AC cables power transformers or other EMI inducing devices e Is there a light dimmer or other SCR based device on the same AC circuit as the SWA1801z Use an AC line filter or plug the SWA1801z into a different AC circuit Hum e Try disconnecting the cable connected to the INPUT jack If the noise disappears it could be a ground loop rather than a problem with the SWA1801z Try some of the following troubleshooting ideas e Use balanced connections throughout your system for the best noise rejection e Whenever possible plug all the audio equip ment s linecords into outlets which share a common ground The distance between the outlets and the common ground should be as short as possible Repair For warranty repair or replacement refer to the warranty information on page 11 Non warranty repair for Mackie products is available at a factory authorized servi
9. OUTPUT and HIGH PASS MID HIGH FREQ OUTPUT These are also wired according to the AES standard The THRU output connectors allow you to connect more than one SWA1801z to your system Unbalanced Male XLR Connector Simply plug the signal source i e mixer output into the first speaker s FULL RANGE INPUT jacks and patch that speaker s THRU jacks to the next speaker s INPUT jacks and so on daisy chaining multiple speakers The THRU jack is wired straight from the FULL RANGE INPUT connector there is no electronic circuitry between so the signal coming out of the THRU jack is exactly the same as the signal going in The HIGH PASS OUTPUT jacks provide a line level signal of the frequencies above 120Hz that you connect to a pair of active speakers or to astereo amplifier powering a pair of passive speakers PLACEMENT The SWA1801z subwoofer is designed to sit on the floor A socket is provided on the top of the SWA1801z for mounting the Mackie SA1521z or SRM450 active speakers Use the optional Mackie speaker mounting pole SPM100 to mount them on the SWA1801z see Hookup Diagram on page 5 As with any powered components protect the SWA1801z from exposure to moisture If you are setting them up outdoors make sure they are un der cover if you expect rain WARNING The cabinet has no rigging points and is not suitable for rigging NEVER attempt to sus pend the SWA1801z by its handles E 2
10. RESS AND IMPLIED INCLUDING THE WARRANTIES OF MERCHANT ABILITY AND FITNESS FOR A PARTICULAR PURPOSE THE WARRANTY GIVEN ON THIS PAGE SHALL BE STRICTLY LIMITED IN DURATION TO THREE YEARS FROM THE DATE OF ORIGINAL PURCHASE FROM AN AUTHORIZED MACKIE DEALER UPON EXPIRATION OF THE APPLICABLE WARRAN TY PERIOD LOUD TECHNOLOGIES INC SHALL HAVE NO FURTHER WARRANTY OBLIGATION OF ANY KIND LOUD TECHNOLOGIES INC SHALL NOT BE LIABLE FOR ANY INCIDENTAL SPECIAL OR CONSEOUENTIAL DAMAGES THAT MAY RESULT FROM ANY DEFECT IN THE MACKIE PRODUCT OR ANY WARRANTY CLAIM Some states do not allow exclusion or limitation of incidental special or conse guential damages or a limitation on how long warranties last so some ofthe above limitations and exclusions may not apply to you This warranty provides specific legal rights and you may have other rights which vary from state to state e 16220 Wood Red Road NE Woodinville WA 98072 USA United States and Canada 800 898 3211 Europe Asia Central and South America 425 487 4333 Middle East and Africa 31 20 654 4000 Fax 425 487 4337 www mackie com E mail sales mackie com
11. SWAT801z ACTIVE SUBWOOFER SYSTEM USER S MANUAL SAFETY INSTRUCTIONS 1 Read Instructions All the safety and operation instructions should be read before this Mackie product is operated 2 Retain Instructions The safety and operating instructions should be kept for future reference 3 Heed Wamings All wamings on this Mackie product and in these operating instructions should be followed 4 Follow Instructions All operating and other instructions should be followed 5 Water and Moisture This Mackie product should not be used near water for example near a bathtub washbowl kitchen sink laundry tub in a wet basement near a swimming pool swamp or salivating St Bernard dog etc 6 Cleaning Clean only with a dry cloth 7 Ventilation This Mackie product should be situated so that its loca tion or position does not interfere with its proper ventilation For example the Component should not be situated on a bed sofa rug or similar surface that may block any ventilation openings or placed in a built in installation such as a bookcase or cabinet that may impede the flow of air through ventilation openings 8 Heat This Mackie product should be situated away from heat sources such as radiators or other devices which produce heat WARNING The heat sink may reach high temperatures during standard use To ensure proper operation
12. allow a minimum of six inches of clearance from the heat sink surface and adequate ventilation 9 Power Sources This Mackie product should be connected to a power supply only of the type described in these operation instructions or as marked on this Mackie product 10 Power Cord Protection Power supply cords should be routed so that they are not likely to be walked upon or pinched by items placed upon or against them paying particular attention to cords at plugs convenience receptacles and the point where they exit this Mackie product 11 Object and Liquid Entry Care should be taken so that objects do not fall on and liquids are not spilled into this Mackie product 12 Damage Requiring Service This Mackie product should be serviced only by qualified service personnel when A The power supply cord or the plug has been damaged or B Objects have fallen or liquid has spilled into this Mackie product or C This Mackie product has been exposed to rain or D This Mackie product does not appear to operate normally or exhibits a marked change in performance or E This Mackie product has been dropped or its chassis damaged WARNING To reduce the risk of fire or electric shock do not expose this apparatus to rain or moisture WARNING The cabinet has no rigging points and is not suitable for flying Never at tempt to suspend the cabinet by its handles 13 Servicing The user should not attempt t
13. and the signal is muted to al low the amplifier to cool When the temperature cools to a safe level once again the thermal pro tection circuit deactivates and normal operation resumes Note Activation of the thermal protection cir cuit is an indication that you should take steps to avoid continued thermal problems See Thermal Considerations on page 7 ON A MACKIE O swarso1z O POWER Indicator When the POWER switch is turned on and the linecord is connected to an active AC power supply this indicator lights green to let you know that you re ready to rock and roll The cool blue LED on the front of the cabinet works in the same Way O FULL RANGE INPUT These are female XLR type connectors that accept a balanced line level signal from a mixing console or other signal source O THRU FULL RANGE OUTPUT These are male XLR type connectors that pro duce exactly the same signal that is connected to the FULL RANGE INPUT jack Use it to daisy chain several SWA1801z s together off the same signal source O HIGH PASS MID HIGH FREQ OUTPUT These are male XLR type connectors that produce the frequencies above 120Hz Connect these to a pair of full range active speakers or to an amplifer passive speaker combination The SWA1801z reproduces the frequencies below 120Hz O SUBWOOFER LEVEL Control This adjusts the subwoofer level The center detent position provides 15 dB of headroom with a nominal
14. ce center To locate your nearest service center visit www mackie com click Support and select Locate a Service Center Service for Mackie products living outside the United States can be obtained through local dealers or distributors If you do not have access to our website you can call our Tech Support department at 1 800 898 3211 Monday Friday 7 am to 5 pm Pacific Time to explain the problem Tech Support will tell you where the nearest factory authorized ser vice center is located in your area Need Help You can reach a technical support representative Monday through Friday from 7 AM to 5 PM PST at 1 800 898 3211 After hours visit www mackie com and click Support or email us at techmailOmackie com SWA1801z SPECIFICATIONS System Specifications Disclaimer Frequency Range 10 dB Since we are always striving to make our products 35 Hz 120 Hz better by incorporating new and improved materials compo Frequency Response 3 dB nents and manufacturing methods we reserve the right to 45 Hz 120 Hz change these specifications at any time without notice Maximum SPL O Im 129dB Peak Output Im 135 dB Crossover Frequency 120 Hz 12 dB octave Input Type Balanced differential Input Impedance 50 kQ Input Protection Level protected Thermal Protection Input stage muting auto reset Transducer Specifications Low Frequency Transducer Diameter 18 457 mm Voice Coil Diameter 40 102
15. e to get au thorization for repair or replacement Alternately go to the Mackie website click Support www mackie com sup port and follow the instructions for reporting a warranty issue and submitting a request for an advance replacement 2 AdvanceReplacement Mackie will ship a replacement unit to you along with an invoice for the suggested retail price of the replacement unit You must return the defec tive unit immediately to cancel the invoice If you do not return the defective unit within 30 days you must pay the full amount stated in the invoice to satisfy your debt 3 Repair When you call Mackie Technical Support ex plain the problem and obtain a Service Request Number Have your Mackie product s serial number ready You must have a Service Request Number before you can obtain factory authorized service e Pack the product in its original shipping carton Also include a note explaining exactly how to duplicate the problem a copy of the sales receipt with price and date showing your daytime phone number and return street address no P O boxes or route numbers please and the Service Request Number If we cannot duplicate the problem or establish the starting date of your Limited Warranty we may at our option charge for service time and parts Ship the product in its original shipping carton freight prepaid to the authorized service center Write the Ser vice Request Number in BIG PRINT on top of the b
16. ghest level of performance and value The cabinet is constructed with 15 mm thick multi layered birch plywood Carrying handles are integrated into each side for easy loading and casters are attached to the rear for easy transport Part No SW0619 Rev C 03 12 2005 2012 LOUD Technologies Inc All Rights Reserved REAR PANEL DESCRIPTION O POWER Switch Use this switch to turn the SWA1801z on and off Make sure the signal source s level control is turned down before you turn it on O AC Receptacle This is where you connect the AC linecord to provide AC power to the SWA1801z s built in pow er amplifiers Plug the linecord into an AC socket properly configured for your particular model LIMIT Indicator The SWA1801z has a built in limiter that pre vents the amplifier outputs from overdriving the transducers The LIMIT indicator lights when the limiter is activated It s okay for the LIMIT indica tor to blink occasionally but if it blinks frequently or lights continuously turn down the level control until the LIMIT indicator only blinks occasionally O SIGNAL Present Indicator This LED illuminates whenever there is a signal present at the FULL RANGE INPUT con nector on the rear panel O THERMAL Indicator The SWA1801z has a thermal protection circuit that monitors the internal temperature of the amplifiers and heatsink If the internal temperature should exceed a safe operating level this indicator lights
17. mm Power Amplifier Low Frequency Power Amplifier Rated Power 800 Watts continuous 1000 Watts peak Rated THD lt 0 03 Cooling Passive Line Input Power US 120 V 60 Hz Europe 230 V 50 Hz Rated power into loudspeaker s rated impedance Physical Properties Height 28 5 724 mm Width 23 5 597 mm Depth 23 5 597 mm Weight 132 lbs 60 kg Enclosure 15 mm thick multi layered baltic birch wood Enclosure Geometry Rectangular Mounting Methods Floor mount only WARNING The cabinet has no rigging points and is not suitable for rigging NEVER attempt to suspend the SWA1801z by its handles Mackie and the Running Man figure are regis tered trademarks of LOUD Technologies Inc All other brand names mentioned are trademarks or registered trademarks of their respective holders and are hereby acknowledged 2005 2012 LOUD Technologies Inc All Rights Reserved Dimensions jt 23 5 597 mm I 23 5 597 mm 11 2 284 mm 28 5 724 mm 3 5 89 mm I 23 5 597 mm gt TOP SWA1801z On Axis Frequency Response with second and third harmonic components 110 o o Fundamental Second 80 Third 70 60 SPL 100 dB 100 Hz AX t 50 P Meste A 40 10 20 50 100 200
18. o service this Mackie product beyond those means described in this operating manual All other servicing should be referred to the Mackie Service Department 14 To prevent electric shock do not use this polarized plug with an extension cord receptacle or other outlet unless the blades can be fully inserted to prevent blade exposure Pour pr venir les chocs lectriques ne pas utiliser cette fiche polarise avec un prolongateur un prise de courant ou une autre sortie de courant sauf si les lames peuvent tre ins r es fond sans laisser aucune parie d couvert 15 Grounding or Polarization Precautions should be taken so that the grounding or polarization means of this Mackie product is not defeated 16 Power Precaution Unplug this Mackie product during lightning storms or when unused for long periods of time Note that this Mackie product is not completely disconnected from the AC mains service when the power switch is in the OFF position 17 NOTE This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruc tions may cause harmful interference to radio communications However there is no guarantee
19. ox The address of your closest authorized service center Will be given to you by Technical Support or it may be obtained from our website Once it s repaired the autho rized service center will ship it back by ground shipping pre paid if it qualified as a warranty repair Note Under the terms of the warranty you must ship or drop off the unit to an authorized service center The re turn ground shipment is covered for those units deemed by us to be under warranty Note You must have a sales receipt from an authorized Mackie dealer for your unit to be considered for warranty repair IMPORTANT Make sure that the Service Request Number is plainly written on the shipping carton No receipt no warranty service E LOUD Technologies reserves the right to inspect any products that may be the subject of any warranty claims before repair or replacement is carried out LOUD Technologies may at our option require proof of the original date of purchase in the form of a dated copy of the original dealer s invoice or sales receipt Final determination of warranty coverage lies solely with LOUD Technologies F Any products returned to one of the LOUD Technologies factory authorized service centers and deemed eligible for repair or replacement under the terms of this warranty will be repaired or replaced LOUD Technologies and its authorized service centers may use refurbished parts for repair or replace ment of any product Products retu
20. rned to LOUD Technologies that do not meet the terms of this Warranty will not be repaired unless payment is received for labor materials return freight and insurance Products repaired under warranty will be returned freight prepaid by LOUD Technologies to any location within the boundaries of the USA or Canada G LOUD Technologies warrants all repairs performed for 90 days or for the remainder of the warranty period This warranty does not extend to damage resulting from improper installa tion misuse neglect or abuse or to exterior appearance This warranty is recognized only if the inspection seals and serial number on the unit have not been defaced or removed H LOUD Technologies assumes no responsibility for the timeli ness of repairs performed by an authorized service center I This warranty is extended to the original purchaser This warranty may be transferred to anyone who may subsequently purchase this product within the applicable warranty period for a nominal fee A copy of the original sales receipt is required to obtain warranty repairs or replacement J This is your sole warranty LOUD Technologies does not authorize any third party including any dealer or sales representative to assume any liability on behalf of LOUD Tech nologies or to make any warranty for LOUD Technologies Inc K THE WARRANTY GIVEN ON THIS PAGE IS THE SOLE WARRANTY GIVEN BY LOUD TECHNOLOGIES INC AND IS IN LIEU OF ALL OTHER WARRANTIES EXP
21. s a high precision 18 transducer combined with application specific amplifier tech nology The system is composed of a single compact subwoofer cabinet with built in control and amplifier electronics Connecting and setting up the SWA1801z is a breeze It accepts a stereo or mono line level signal via female XLR input jacks Male XLR Thru jacks are provided for daisy chaining the signal to additional SWA1801z cabinets The built in crossover separates the low frequencies from the high frequencies and routes the high frequencies to the male XLR high pass output jacks Connect these to the inputs of full range active speakers such as the Mackie SA1521z or to an amplifier powering a pair of passive speakers such as a The SWA1801z can produce a maximum SPL of 185 dB E Im combination of the Mackie Me1400i and C300z A Phase switch gives you the option of reversing the polarity of the signal to the subwoofer by 180 A Subwoofer Level control allows you to adjust the balance between the sub woofer and the full range speakers The built in amplifier produces 800 watts of continu ous power The amplifier module sits on a heatsink that eliminates the need for fans dramatically extending life expectancy and eliminating maintenance cycles A tremendous benefit of having the amplifier located within the subwoofer cabinet is that the SWA1801z functions as a system optimizing acoustic electronic and mechanical designs to achieve the hi
22. that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television recep tion which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna e Increase the separation between the equipment and the receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV technician for help CAUTION Changes or modifications to this device not expressly approved by LOUD Technologies Inc could void the user s authority to operate the equipment under FCC rules 18 This apparatus does not exceed the Class A Class B whichever is ap plicable limits for radio noise emissions from digital apparatus as set out in the radio interference regulations of the Canadian Department of Communications ATTENTION Le pr sent appareil num rique n met pas de bruits radio lec triques d passant las limites applicables aux appareils num riques de class A de dass B selon le cas prescrites dans le reglement sur le brovillage radio lec trique dict par les ministere des communications du Canada CAUTION CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK RISK OF ELECTRIC SHOCK DO NOT OPEN NO USER SERVICEABLE PARTS
23. vection cooling to work efficiently it is important to provide ade guate airspace behind the loudspeaker When you position the SWA1801z we recommend leaving at least six inches of air space behind it In the unlikely event of the amplifier over heating a built in thermal switch will activate which mutes the signal When the amplifier has cooled down to a safe operating temperature the thermal switch resets itself and the SWA1801z resumes normal operation If the thermal switch activates frequently try turning down the level control a notch or two on the mixing console or other signal source or on the subwoofer itself to avoid overheating the amplifiers If the temperature in the room is too high it could cause the amplifier to overheat In this case you should try aiming a fan at the rear panel to move more air across the heatsink panel SERVICE INFORMATION If you think your Mackie product has a problem please check out the following trouble shooting tips and do your best to confirm the problem Visit the Support section of our website www mackie com support where you will find lots of useful information such as FAQs docu mentation and user forums You may find the answer to the problem without having to send your Mackie product away Troubleshooting No power e Our favorite question Is it plugged in Make sure the AC outlet is live check with a tester or lamp e Our next favorite question Is the POWER
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