Mackie SRM450V2 User's Manual
Contents
1. HIGH VOLTAGE POWER LINE 120V PRIMARY SECONDARY WINDING WINDING 120V Y T TRANSFORMER _ _ EARTH GROUND NEUTRAL 240V CENTER TAPPED SECONDARY For the US 120 V model A maximum of five SRM450v2s can be connected per Don t use an outlet if it is wired improperly This is to protect yourself 15A service as well as your equipment This allows each SRM450v2 to be safely operated at its maximum level amp gt When turning your system on turn on the SRM450vas last This will stop any turn on thumps and bangs from your source equipment being amplified Never remove the ground pin on the power cord of the SRM450v2 or any other component This is very dangerous VERY IMPORTANT When turning off your system turn off the SRM450v2s first This will prevent any turn off thumps and bangs from your source equipment being amplified When setting up for a show often you are plugging into an AC power distribution system you know nothing about You may even be faced with 2 wire outlets that are missing the third safety ground pin It s a good idea to have a three wire AC outlet tester in your toolbox so you can check the outlets yourself to make sure they are wired correctly These testers will tell you if the polarity of the hot and neutral wires is reversed and if the safety ground is disconnected VERY IMPORTANT2. 4249 2 9 COMPRESSOR EFFECTS SRM450v2 AC CONNECTIONS 13 2 SERVICE INFORMATION If you think your Mackie product has a problem please check out the following troubleshooting 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 and other documentation 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 switch on If not try turning it on lt the blue light on the front panel illuminated If not make sure the AC outlet is live If so refer to No sound below e The AC line fuse inside the chassis is blown This is not a user serviceable part Refer to Repair on page 16 to find out how to proceed No sound e 3 the input LEVEL control turned all the way down Follow the procedures in the Quick Start section on page 6 to verify that all the volume controls in the system are properly adjusted e 5 the signal source working and making union scale Make sure the connecting cables are in good repair and securely connected at both ends Make sure the output volume gain control on the mixing console or preamp is turned up sufficiently to d
3. liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed 10 rain or moisture does not operate normally or has been dropped 15 This apparatus shall not be exposed to dripping or splashing and no object Filed with liquids such as vases or beer glasses shall be placed on the apparatus 16 Do not overload wall outlets and extension cords as this can result a tisk of fire or electric shock 17 This apparatus has been designed with Class construction and must be connected to a mains outlet with a protective earthing connection the third grounding prong 18 This apparatus has been equipped with a rocker style AC mains power switch This switch is located on the rear panel and should remain readily accessible to the user 19 The MAINS plug or an appliance coupler is used as the disconnect device so the device shal remain readily operable Duration per Sound Level dBA day in Typical Example 181902 Duo in small club 6 ees RISK OF ELECTRIC SHOCK DO NOT OPEN RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR CAUTION AVIS CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL ATTENTION POUR EVITER LES RISQUES DE CHOC ELECTRIQUE NE PAS ENLEVER LE COUVERCLE AUCUN ENTRETIEN DE PIECES INTERIEURES PAR L USAGER CONFIER L ENTRETIEN AU PERSONNEL QUALIFIE AVIS POUR E
4. SPL Peak 127 dB Crossover Linkwitz Riley 24 dB octave 1600 Hz Audio Input Type Balanced Differential Input Impedance 20 kohms Input Protection RFI and level protected Sensitivity Line 4 dBu center detent Mic 36 dBu Maximum Input Level 22 dBu Low Cut Frequency 15 Hz Second order filter Acoustic Contour Equalization Peaking 3 dB 100 Hz 3 dB 12 kHz Operating Temperature Range 10 to 45 C 14 F to 113 F Power Amplifiers Low Frequency Power Amplifier Rated Power 300 watts Rated THD lt 0 1 Cooling Convection Extrusion Design Class D Parametric Servo Feedback High Frequency Power Amplifier Rated Power 100 watts Rated THD lt 0 1 Cooling Convection Extrusion Design Conventional Class AB Rated power is continuous rms wattage into transducer s rated impedance 5 kHz for the HF amplifier and 500 Hz for the LF amplifier Transducers Low Frequency Transducer Diameter 12 in 300 mm Voice Coil Diameter 3 0 75 mm Sensitivity 1W 1m 98 dB Nominal Impedance 8 ohms Power Handling 600 watts program Frequency Range 45 Hz 3 kHz High Frequency Transducer Diaphragm Diameter 1 75 in 44 5 mm Diaphragm Material Heat treated titanium Sensitivity 1W 1m 106 dB Nominal Impedance 8 ohms Power Handling 100 watts program Frequency Range 1 kHz 20 kHz Horn Design Type Conical and Exponential Mouth Size 12 in 304 8 mm W x 7 in 177 8 mm Throat Diameter 1 in 25 4 mm Horizontal Co
5. be absorbed much easier than lower frequencies By providing direct line of sight from the active speakers to the audience you increase the overall brightness and intelligibility of the sound system Highly reverberant rooms like many gymnasiums and auditoriums are a nightmare for sound system intelligibility Multiple reflections off the hard walls ceiling and floor play havoc with the sound Depending on the situation you may be able to take some steps to minimize the reflections such as putting carpeting on the floors closing draperies to cover large glass windows or hanging tapestries or other materials on the walls to absorb some of the sound However in most cases these remedies are not possible or practical So what do you do Making the sound system louder generally doesn t work because the reflections become louder too The best approach is to provide as much direct sound coverage to the audience as possible The farther away you are from the speaker the more prominent will be the reflected sound Use more speakers strategically placed so they are closer to the back of the audience If the distance between the front and back speakers is more than about 100 feet you should use a delay processor to time align the sound Since sound travels about 1 foot per millisecond it takes about 1 10 of a second to travel 100 feet RIGGING The SRM450v2 cabinets are fitted with ten rigging points as shown in the diagr
6. color or distortion Do not place any magnetic audio or video tapes or computer discs near the SRM450s VERY IMPORTANT Room Acoustics The SRM450v2 active speakers are designed to sound as neutral as possible that is to reproduce the input signal as accurately as possible monitoring the sound rather than changing it Room acoustics play a crucial role in the overall performance of a sound system However the wide high frequency dispersion of the SRM450v2 helps to minimize the problems that typically arise 90 Dispersion up to 20 kHz Here are some other placement tips Avoid placing loudspeakers in the corners of a room This increases the low frequency output and can cause the sound to be muddy and indistinct Avoid placing loudspeakers against a wall This too increases the low frequency output though not as much as corner placement However if you do need to reinforce the low frequencies this is a good way to do it Avoid placing the active speakers directly on a hollow stage floor A hollow stage can resonate at certain frequencies causing peaks and dips in the frequency response of the room It s better to place the active speakers on a sturdy table or tripod stands Position the active speakers so the high frequency drivers are two to four feet above ear level for the audience make allowances for a standing dancing in the aisles audience High frequencies are highly directional and tend to
7. other apparatus including amplifiers that produce heat Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the athe A grounding type plug has two blades and a third grounding prong The wide e or the third prong are provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the gt NOM PWN apparatus the dealer or an experienced radio TV technician for 11 Only use attachments accessories specified by the manufacturer 12 Use only with a cart stand tripod bracket or CAUTION Changes or modifications to this device not expressly WARNING approved by LOUD Technologies Inc could void the user s authority to table specified by the manufacturer or sold with aperte the FCC Tules the apparatus When a cart is used use caution when moving the cart apparatus combination to 4 21 This does not exceed the Class A Class whichever is avoid injury fip over applicable limits for radio noise emissions from digital apparatus as 13 Unplug this apparatus during lightning storms or set out in the radio interference regulations of the Canadian Department when unuse fr long periods of t
8. reducing the possibility of overheating VERY IMPORTANT If the ambient temperature in the room is high though highly unlikely it could cause the amplifiers to overheat In this case you should try aiming a fan at the heatsink to increase the air flow through the fins During a performance don t have it cranked so high that the rear panel PEAK LED is blinking frequently or lighting continuously You should turn down the LEVEL control a notch or two to avoid overheating the amplifiers or your neighbors If the amplifiers do overheat a built in thermal switch will activate placing the amplifiers into standby When the amplifiers have cooled down to a safe operating temperature the thermal switch will reset and the SRM450v2 will resume normal operation HEATSINK LOW CUT PEAR a Cy Se o 12 AC POWER CONSIDERATIONS Be sure the SRM450v2 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 75 of the rated line voltage but won t reach full power resulting in lower headroom Under maximum SPL conditions where musical peaks are clipping the SRM450v2 120V model draws 2 5 amps on average 1 3 amps for the 240V model Under normal con
9. Microphone Take great care to point any microphones away from the SRM450v2s otherwise you may get feedback The SRM450v2 may be paired with a Mackie SRM1801 subwoofer to create an incredibly powerful system The active crossover inside the SRM1801 splits the full range input signal into two ranges The SRM1801 plays the low frequency range and sends the high pass range to the SRM450v2 Line level High Pass The SRM450v2 can be pole 401206 mounted on top of the SRM1801 as shown using the optional SPM200 Speaker Pole Mount saving the cost of a more expensive tripod stand Line level To SRM1801 input To SRM1801 input S5RM1801 plays the low frequencies SRM1801 plays the low frequencies Mixing Console Mackie Onyx 12201 shown SRM450v2 3 WAY SYSTEM WITH A POWERED SUBWOOFER 7 REAR PANEL DESCRIPTION The SRM450v2 has several connectors controls and indicators that you should understand 1 IEC Socket This is where you connect the supplied AC linecord to provide AC power to the SRM450v2 s built in power amplifiers Plug the linecord into an AC socket properly configured for your particular model Note If you happen to lose the AC linecord replacements are readily available at any office or computer supply store Always use a three pin plug with a ground p
10. No amendment modification or waiver of any of the provisions of this Product Warranty will be valid unless set forth in a written instrument signed by the party to be bound thereby 19 16220 Wood Red Road 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. SRM450v2 Powered Loudspeaker OWNER S MANUAL eee IMPORTANT SAFETY INSTRUCTIONS Read these instructions 20 NOTE This equipment has been tested and found to comply with Keep these instructions the limits for a Class B digital device pursuant to part 15 of the FCC Heed all warnings Rules These limits are designed to provide reasonable protection Follow all instructions against harmful interference in a residential installation This Do not use this apparatus near water equipment generates uses and can radiate radio frequency energy Clean only with a dry cloth and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception 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 Do not block any ventilation openings Install in accordance with the manufacturer s instructions Do not install near any heat sources such as radiators heat registers stoves or
12. VITER LES RISQUES D INCENDIE OU D ELECTROCUTION N EXPOSEZ PAS CET ARTICLE The lightning flash with arrowhead symbol within an equilateral triangle is Very loud classical music 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 Le symbole clair avec point de fl che l int rieur d un triangle quilat ral 105 Adrian screaming at Troy amp Jayme about deadlines est utilis pour alerter l utilisateur de la pr sence l int rieur du coffret de d l ctrocution The exclamation point within an equilateral triangle is intended to alert the 0 25 or less Loudest parts at a rock concert 1 user of the presence of important operating and maintenance servicing instructions in the literature accompanying the appliance Le point d exclamation l int rieur d un triangle quilat ral est employ pour alan uate disco pourle WARNING To reduce the risk of fire or electric shock do not expose this apparatus to rain or moisture accompagnant l appareil 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 eq
13. acesisssessnencosvsovesesnsases 10 THERMAL 12 AC POWER CONSIDERATIONS 12 AC Power Distribution essssssssssssscssssscssssscsssescosssscessssoonsse 12 SERVICE INFORMATION 5 14 Troubleshooting sssesssossosssosssossoossoossoosnosovossvossossoossooosaosos 14 10 CARE AND 5 16 SPECIFKATIONS 1 LIMITED 555 8 19 Please write the serial number for your SRM450v2 here or for both SRM450v2s if you have two for future reference 1 insurance claims tech support return authorization etc Loudspeaker 2 Date of Purchase Purchased at Part No SW0617 Rev E 03 11 2007 2011 LOUD Technologies Inc All Rights Reserved INTRODUCTION Thank you for choosing LOUD Technologies Mackie active sound reinforcement loudspeakers The SRM450v2 is a redesigned version of our popular SRM450 active loudspeaker With its newly designed Class D Fast Recovery amplifiers high output compression driver and 12 woofer it produces an even smoother sound than the original SRM means Sound Reinforcement Monitor and the SRM450v2 truly produces a studio quality sound in a sound reinforcement speaker Our design goal was to build a sound reinforcement speaker with 1 High precis
14. am below These are M10 inserts M10 threaded eyebolts M10 1 5 mm x 20 mm are available to fit these inserts 1 Eyebolts the SRM450v2 active speakers by thei handles If you want to suspend them use the rigging points only Consult a professional rigger or structural engineer prior to suspending loudspeakers from a structu not intended for that use Always know the working load limit of the structure supporting the loudspeaker array Always make sure that the rigging hardware minimum rating is at least five times the actual load E gt Both Sides Bottom If you are hanging them in an 2 gt LEVEL correctly Also set the TIMED TURNOFF switch if you want the SRM450v2 to turn on when there is a signal present It will also turn off after three or more minutes of silence inaccessible place such as over a lion cage make sure that you first complete the sound check and set the SRM450v2 WARNING Never attempt to suspend r re S ll THERMAL CONSIDERATIONS The amplifiers inside the SRM450v2s are convection cooled by a large heatsink For efficient cooling it is important to allow at least six inches of free space behind the SRM450v2 5 2 gt If you use the SRM450v2 on its side for stage monitor applications we highly recommended that you engage the rear panel LOW CUT switch This will allow more power for useful monitor frequencies while
15. ditions the current draw is below 1 amp 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 amplifiers AC Power Distribution A 240 VAC center tapped service entrance transformer serves the majority of AC outlets encountered in homes and clubs in the U S This provides two phases of AC power on either side of the center tap at 120V each If lighting is used in a show it is preferable to power the lights from one leg of the service and power the audio equipment from the other leg This will help minimize noise from the lights coupling into the audio particularly if SCRs or light dimmer switches are used Wherever possible connect all of your equipment to the same electrical circuit This will help reduce the possibility of a ground loop problem causing an annoying hum in your speakers Low power components such as tape decks mixers effects processors and CD players should be connected to the same outlet as the SRM450v2s Use fused power strips as shown in the diagram on the next page Make sure that the total current draw of your components does not exceed the capability of the outlets and power strips
16. e PEAK LED on the rear panel is not lighting up frequently or continuously Remember to wear ear protectors if you get close to an SRM450v2 playing at high levels When the PEAK LED comes on the SPL is in a region above 120 dB 2 gt e Make sure there is room behind the rear panel to provide sufficient ventilation to the heatsink Bad sound e sit loud and distorted Follow the procedures described in the Quick Start section to verify that the levels are set properly Is the input connector plugged completely into the jack Be sure all connections are secure It s a good idea to periodically clean all electrical connections with a non lubricating electrical contact cleaner Noise Make sure all connections to the active speakers are good Make sure none of the signal cables are routed near AC cables power transformers or other EMI inducing devices Is there a light dimmer or other SCR based device on the same AC circuit as the SRM450v2 Use an AC line filter or plug the SRM450v2 into a different AC circuit Hum Turn the LEVEL control all the way down If the noise disappears it s coming from the signal source If not 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 SRM450v2 Try some of the following troubleshooting ideas Use balanced connections throughout your system for the be
17. ffect the video quality If the hum persists try removing components one at a time from the back of the mixer or preamplifier and check for hum each time turn off your equipment before you undo any connections It is fairly common to find more than one problem If your preamp or mixer are the only things connected to the SRM450vas and the hum is still there try different connection cables or move the preamp mixer to another location Pressing the LOW CUT FILTER may help reduce the hum if you have trouble finding the cause of the problem Do this anyway if you do not need to reproduce the lower frequency range 15 Repair Dimensions For warranty service refer to the warranty 15 4 in 390 mm 14 8 in 376 mm information on page 19 gt Non warranty service for Mackie products is available at factory authorized service 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 ww 099 1092 If you do not have access to our website you can call our Tech Support department at 1 800 898 3211 Monday Friday normal business hours Pacific Time to explain the problem Tech Support will tell you where the nearest factory authorized service center is located in your area CARE AND MAINTENANCE Your Mackie active s
18. ginal purchaser of the product hereinafter Customer you or your For products purchased outside the U S or Canada please visit www mackie com warranty to find contact information for your local distributor and information on any warranty coverage provided by the distributor in your local market LOUD warrants to Customer that the product will be free from defects in materials and workmanship under normal use during the Warranty Period If the product fails to conform to the warranty then LOUD or its authorized service representative will at its option either repair or replace any such nonconforming product provided that Customer gives notice of the noncompliance within the Warranty Period to the Company at www mackie com support or by calling LOUD technical support at 1 800 898 3211 toll free in the U S and Canada during normal business hours Pacific Time excluding weekends or LOUD holidays Please retain the original dated sales receipt as evidence of the date of purchase You will need it to obtain any warranty service For full terms and conditions as well as the specific duration of the Warranty for this product please visit www mackie com warranty The Product Warranty together with your invoice or receipt and the terms and conditions located at www mackie com warranty constitutes the entire agreement and supersedes any and all prior agreements between LOUD and Customer related to the subject matter hereof
19. ime of Communications ATTENTION Le pr sent appareil num rique n met pas de bruits ra dio lectriques d passant las limites applicables aux appareils num riques de class A de class selon le cas prescrites dans le r glement sur le radio lectrique dict par les ministere des communications du 22 Exposure to extremely high noise levels may cause permanent hearing loss Individuals vary considerably in susceptibility to noise induced hearing loss but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a period of time The U S Government s Occupational Safety and Health Administration OSHA has specified the permissible noise level exposures shown in the following chart According to OSHA any exposure in excess of these permissible limits could result in some hearing loss To ensure against potentially danger ous exposure to high sound pressure levels it is recommended that all persons exposed to equipment capable of producing high sound pres sure levels use hearing protectors while the equipment is in operation Ear plugs or protectors in the ear canals or over the ears must be worn when operating the equipment in order to prevent permanent hearing loss if exposure is in excess of the limits set forth here 14 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power spol cord or plug is damaged
20. in 2 POWER Switch Switch up to turn the SRM3850v2 on Make sure the LEVEL control is down before you turn it on Press the bottom of this switch to put the speaker into standby mode It will not function but the circuits are still live To remove AC power either turn off the AC mains supply or unplug the power cord from the speaker and the AC mains supply 3 POWER ON Indicator When the POWER switch is turned on and the linecord is connected to an active AC Mains supply this indicator located just above the POWER switch glows to let you know that ready to rock and roll The cool blue LED on the front of the speaker works in the same way 4 TIMED TURNOFF When this switch is pushed in the built in amplifiers turn on and off depending on the presence or absence of an input signal An input signal level of 45 dBu minimum activates the auto on function A silent period greater than three minutes activates the auto off function The blue LED on the front of the speaker reflects the state of the amplifiers 5 THERMAL Indicator This LED lights if the heatsink temperature exceeds a safe operating temperature and triggers the thermal safety switch In the unlikely event that this occurs the built in amplifiers shut down until the heatsink temperature cools back down Then the thermal switch resets itself the THERMAL indicator turns off and normal operation resumes If the SRM450v2 keeps shutting down make s
21. ine level or a microphone level signal to the input and use this control to adjust the level correctly There is no phantom power for a microphone so you should use a dynamic mic or use a condenser type if it has its own battery power gt Follow the Quick Start guide on page 6 for setting the LEVEL control For most applications it will be in the NORMAL position 12 o clock If you have a particularly high line level signal connected to the SRM450v2 you may need to turn the control down to the LINE indication 9 o clock Ifyou have a low line level or mic level signal connected you may need to turn the LEVEL control up to the MIC indication 3 o clock 9 SIGNAL PRESENT Indicator This LED illuminates whenever there is a signal present at the INPUT connector on the rear panel It senses the signal just prior to the LEVEL control so even if the LEVEL control is turned down the SIGNAL PRESENT indicator still works letting you know there is a signal present at the input before turning up the LEVEL control 10 PEAK Indicator When the signal levels at the amplifier outputs approach clipping a soft compression circuit is activated that reduces the input signal The PEAK LED lights whenever the compression circuit is active At this time the SRM450v2 may reach sound pressure levels of 120 dB or more It s okay for the PEAK indicator to blink occasionally but if it blinks frequently or continuou
22. ion high output and accurate playback 2 Very wide smooth dispersion of mid and high frequencies 3 Ergonomically correct physical design for easy transport and set up Through the combined resources of our top notch mechanical and analog engineers and our experienced transducer engineers at EAW we were able to achieve our design goals in every aspect The result is a sound reinforcement system equally at home in a concert setting in the studio impromptu concerts on the studio roof in the cinema or in a home theater The Transducers The SRM450v2 active speakers feature a 12 inch high power low frequency woofer with a 38 inch voice coil and 1 75 inch titanium diaphragm high output compression driver This high frequency driver is mounted on an acoustically non resonant exponential waveguide providing a wide controlled dispersion and precise reproduction of the critical upper mid range and high frequencies The result is an unbelievably smooth off axis response that allows everyone in the audience to experience the same high resolution audio no matter where they are seated The Power Amplifiers To power these beauties each SRM450v2 includes two of our acclaimed FR Series Fast Recovery power amplifiers In addition the low frequency amplifier uses a Class D design for improved efficiency and cleaner power Our exclusive designs use low negative feedback yet allow the amplifiers to maintain low distortion and stabi
23. ity mic line input section In short all the complex interconnected components in the system are designed to work in harmony with each other to produce the best possible sound Even for Uncle Bert s star performance on spoons gt HOOKUP DIAGRAMS Quick Start 1 Start with the following settings on the back of the SRM450v2 Turn the POWER switch off down Set the TIMED TURNOFF CONTOUR and LOW CUT switches out WARNING Turn the LEVEL control down counterclockwise before every use If not you could be in for a startling surprise especially if the last time you used it was with a microphone and now you want to connect a line level source Connect the output from your signal source mixing console microphone preamp or other mic or line level source directly to the INPUT connector on the back of the SRM450vz2 It accepts balanced line level signals from mixers preamplifiers CD players tape decks etc and accepts direct connections from dynamic microphones Connect the supplied AC power cord to the IEC socket on the back of the SRM450v2 Plug the other end into an AC outlet properly configured with the correct voltage for your particular model THERMAL PEAK SIGNAL PRESENT POWER 2 gt TIMED TURNOFF Turn on your signal source Make sure its Master Volume control if it has one is turned all the way d
24. ixer has an output impedance of 120 ohms then you can daisy chain up to sixteen SRM450v2s This is a load of 1250 ohms SRM450v2 input impedance 20 kohms 16 of these in parallel 1250 ohms Since microphones typically have a higher output impedance you should limit daisy chaining from a mic source to two SRM450v2s see the diagram on page The THRU jack is wired straight from the 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 Balanced XLR Connectors 10 The SRM450v2 active speakers are designed to sit on the floor a tabletop or to fit on a standard tripod speaker stand They can also be suspended by the rigging points shown opposite You can lay the cabinet down on its side and use the SRM450v2 as a floor monitor The asymmetrical trapezoidal shape of the cabinet provides a perfect angle for aiming up toward performers from the front of the stage When used for monitor applications we recommend engaging the LOW CUT filter As with any powered components protect them from moisture If you are setting them up outdoors make sure they are under cover if you expect rain gt The SRM450v2 generates magnetic fields Do not place it closer than two feet 0 6 meters from any TV set or computer monitor Check the screen for any change in
25. l trapezoidal design of the cabinet makes it easy to use as a floor wedge for stage monitor applications The Active Advantage There are a number of advantages to using an active speaker system over a passive loudspeaker e The internal crossover is active and its low power circuitry operates on line level signals It does not waste speaker level power like a passive crossover with large coils caps and resistors e The input signals are crossed over before they reach the amplifiers so each amplifier only receives the correct frequency range for its driver e The amplifiers are designed specifically for these speaker load impedances There is no guesswork as to what load each amplifier has to drive so they can provide maximum acoustic output from the speakers yet minimize the danger of speaker damage due to overdriving a lesser amplifier e The connecting wires between the amplifier outputs and the drivers are kept to a minimum so the damping factor of the amplifier isn t compromised by the resistance of long speaker cables In addition all the power from the amplifier is transferred directly to the drivers with no speaker cable losses e The acoustic sum of the outputs from the two drivers is optimized electronically as well as physically so the amplitude response is flat and there is no lobing error e The presence of active circuits within the speaker cabinet allow the designer to add on extra details such as a high qual
26. lity and to quickly recover when driven into clipping The amplifiers include the following features e The low frequency amplifier produces up to 540 watts peak 800 continuous before clipping e The high frequency amplifier produces up to 150 watts peak 100 continuous before clipping Each amplifier has its own compressor circuit that acts when the input signal is large enough to cause clipping distortion and excessive voice coil heat The compressor will automatically decrease the input signal to a safe level The compressor in the low frequency amp works independently from that in the high frequency amp The low frequency amp uses a servo feedback loop which senses the current flowing in the woofer coil This controls the low frequency response and maintains low distortion at high output levels e The low frequency amplifier also has a sweeping filter This will automatically move the low cut off frequency up or down depending on the amplifier output For example if the amplifier is below clipping the low frequency cut off point is 55 Hz As it approaches clipping this shifts up smoothly to 120 Hz providing more power reserves and less distortion before clipping This happens quickly and continuously protecting the amplifier and the woofer and reducing any noticeable distortion Warning Although the amplifiers have these protection circuits you must still make sure the PEAK light is not blinking continuously If it i
27. own Turn on the SRM450v2 POWER switch Start the signal source whether it be speaking into a microphone or starting a CD player Adjust any volume controls on the signal source for normal operation Slowly turn up the LEVEL control on the back of the SRM450v2 until the desired volume is reached and the PEAK light does not come on Always wear hearing protectors if you are close when it is playing at high levels If there is no sound always turn down the SRM450v2 LEVEL control before investigating There may be a mixer or preamplifier mute or tape switch engaged or a mic switch off RAH Qi PARALLEL OTT 0 a t 5 ond o Next Next From Mixer Right Output From Mixer Left Output ore 55 8 GUE lo a lee a 1 EET 1201200270179 Mixing Console Mackie Onyx 12201 shown From Mixer Right Output From Mixer Left Output Mixing Console Mackie Onyx 12201 shown 2 SRM450v2 STEREO OPERATION WITH A MIXER AND USING THE THRU JACK 6 For microphone connections you can daisy chain up to two SRM450vas using the THRU A jacks as shown Dynamic
28. peakers will provide many years of reliable service if you follow these guidelines Q E Ul 15 4 in 390 mm Avoid exposing the loudspeakers to moisture If they are set up outdoors be sure they are under cover if you expect rain or you live in Washington VERY IMPORTANT e Avoid exposure to extreme cold below freezing temperatures If you must operate the loudspeakers in a cold environment warm up the voice coils slowly by sending a low level signal through them for about 15 minutes prior to high power operation Use a dry cloth to clean the cabinets Only do this when the power is turned off Avoid getting moisture into any of the openings of the cabinet particularly where the drivers are located Need help with your SRM450v2 Visit www mackie com and click Support to find FAQs manuals addendums and other useful information Email us at techmail mackie com Telephone 1 800 898 3211 to speak with one of our splendid technical support representatives Monday through Friday normal business hours PST 16 SRM450v2 SPECIFICATIONS System Specifications Line Input Power Frequency Response 3 dB US 120 VAC 60Hz 55 Hz 18 kHz Recommended amperage service 2 5 amps Frequency Range 10 dB Europe 230 VAC 50Hz 45 2 20 kHz Recommended amperage service 1 25 amps Divectivity Factor Q DD 9 95 9 98 averaged 2 kHz to 10 kHz SPL Long term Im 124 dB
29. rive the inputs of the speaker You should be able to see the SIGNAL PRESENT LED blink on the rear panel Make sure the preamp or mixer does not have a Mute on or a Tape or Processor loop engaged If you find something like this make sure the volume gain is turned down before disengaging the offending switch 5 the THERMAL LED lit Make sure there is at least six inches of free space behind the heatsinks Allow the SRM450vz2 to cool off and it will turn back on 14 One side is way louder than the other e Are the LEVEL controls set the same on both active speakers e Check the PAN control or balance on the signal source It may be turned too far to one side If you re using a stereo signal source it may be delivering an out of balance stereo signal Try swapping sides Turn off the active speakers swap the input cables coming from the mixing console turn the active speakers back on If the same side is still louder the problem may be with your active speakers or cables between the mixer and the active speaker If the other side is louder now the problem is with the mixer or the signal source Poor bass performance Check the polarity of the connections between the mixer preamp and the active speakers You may have your positive and negative connections reversed at one end of one cable causing one SRM450v2 to be out of phase As soon as the music gets loud the SRM450v2 shuts down sure that th
30. s turn down your mixer faders or preamplifier gain or turn down the SRM450v2 LEVEL control VERY IMPORTANT The Crossover The built in electronic crossover is a 24 dB octave Linkwitz Riley design Although more expensive than other crossover designs the benefits provided by the Linkwitz Riley design have been well documented These benefits include e Absolutely flat frequency response throughout the bandpass without the characteristic ripple near the crossover point exhibited by other designs The sharp 24 dB per octave roll off of the filters ensures that the transducers aren t reproducing frequencies outside of their capabilities e The acoustic sum of the two driver responses is unity at the crossover frequency resulting in perfect power response Our heroic engineers have worked carefully to ensure that the SRM450v2 also provides perfect phase response This diligence has yielded phenomenal accuracy even if you are standing 20 feet away The Cabinet The SRM450v2 cabinet was designed to be the strongest molded composite cabinet on the planet This material is as strong as concrete and rigid enough to prevent unwanted vibrations in the cabinet It has built in fly points for hanging and a socket in the bottom for mounting on a tripod stand Although it is an exceptional choice for installed sound situations its light weight and durable finish also make it ideal for portable sound system use The asymmetrica
31. sly either turn down the signal level at the mixer or other signal source or turn down the SRM450v2 s LEVEL control Wear hearing protection if you are close to the SRM450v2 playing at high levels 2 gt 11 INPUT Connector This is a female XLR type connector that accepts a balanced or unbalanced mic or line level signal 12 THRU Connector This is a male XLR type connector that produces exactly the same signal that is connected to the INPUT jack It can be a balanced or unbalanced mic or line level signal Use it to daisy chain several active speakers together off the same signal source CONNECTIONS The SRM450v2 has a female XLR input that accepts balanced or unbalanced mic or line level signal When connecting a balanced signal be sure it s wired per AES Audio Engineering Society standards XLR Hot Pin 2 Cold Pin Shield Ground Pin 1 There is also a male XLR connector labeled THRU This allows you to connect more than one SRM450v2 to the output of your mixing console Simply plug the signal source output into the first INPUT jack and patch that speaker s THRU jack to the next INPUT jack and so on daisy chaining multiple speakers see diagram on page 6 There is a limit to how many you can daisy chain together A general rule is to maintain a load impedance ten times or more than the source impedance to prevent excessive loading on the source For example if your m
32. st noise rejection Whenever possible plug all the audio equipment s linecords into outlets which share a common ground see the diagram on page 13 The distance between the outlets and the common ground should be as short as possible Never remove the ground pin on the power cord of the SRM450v2 or any other component This is very dangerous VERY IMPORTANT The hum may appear when using an unbalanced source consumer preamp CD player VCR etc This is caused by the unbalanced to balanced interface between the devices and exacerbated by the fact that most consumer audio equipment have a two wire linecord without the third pin safety ground Use an interconnect cable wired as shown below The important point is that the shield and the wire from the XLR pin 8 are joined at the RCA source end ROA 3 Conductor Cable 5 Disconnect any cables which come in from outside such as cable TV satellite TV or roof top antennas They must be disconnected from every part of your system such as the TV VCR and preamp If the hum goes away you can add a ground loop isolator in your cable line This is an inexpensive device available from video or TV dealers or you can make your own from two TV baluns standard TV 75 300 ohm adapters Balun join insulate Balun The baluns are threaded at one end 75 ohm to fit TV coax cable and have two wires at the other end 300 ohm They will not a
33. the Running figure and FR Series are registered trademarks of LOUD Technologies Inc All other brand names mentioned are trademarks or registered trademarks of their respective holders and are hereby acknowledged 2003 2011 LOUD Technologies Inc All Rights Reserved 17 SRM450v2 BLOCK DIAGRAM A 30151634 ASNAS 4001 OAAAS 1041 02 SSVa 0924 01 400M 1 Ehz 321 CGIOHS3aHL aAaWAOASNVAL aaMOd aaTIOALNOD aaMOd ONIHILIMS HOLIMS aaMOd YOSSAAMNOD SSVd O1 1 ZHOZI Or 10594409 ASNASSLIOA JHON 440 NO 2 ALN HOLIMS ASNAS Nowara lt 6 Wad 0 3 m wOSSaAdWOD 13ML E 7 HANI SSVd IH ar ANOLNOI 2 2 CIOHSAaHL 18 Mackie Limited Warranty Please keep your sales receipt in a safe place This Limited Product Warranty Product Warranty is provided by LOUD Technologies Inc LOUD and is applicable to products purchased in the United States or Canada through a LOUD authorized reseller or dealer The Product Warranty will not extend to anyone other than the ori
34. uipment EEE Improper handling 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 EE cquipment for recycling please contact your local city office waste authority or your household waste disposal service Contents IMPORTANT SAFETY 2 REAR PANEL 5 5 5 8 3 POWER Indicator 55 8 5 9 SIGNAL PRESENT 9 10 PEAK 9 11 INPUT Connector sssssssssssoossssssosooooooooooooooooooooooooooooooo 9 12 THRU gt Loudspeaker 1 CONNECTIONS sinnini Room ACOUSTICS scssssiesossssessssescsenesos
35. ure there is plenty of ventilation to the rear panel Please see Thermal Considerations on page 12 gt 6 CONTOUR Pushing in this switch engages filter that provides 3 dB of boost to the low and high frequencies below 100 Hz and above 12 kHz This provides a punchy crisp sound for most live music applications You can experiment with this switch by leaving it out for a while then pushing it in to determine which way sounds best for your application It is especially useful when listening at lower volumes as it highlights the bass like a Loudness switch in addition to boosting the highs 7 LOW CUT Pushing in this switch engages a low cut filter which rolls off the low frequencies below 75 Hz This is useful for minimizing stage noise rumble and microphone handling noise It is highly recommended that you engage this switch when using the SRM450v2 as a stage monitor This allows the bass amplifier to utilize its power for those frequencies useful in stage monitor applications pa TIMED TURNOFF 100Hz 12 CONTOUR LOW CUT THRU INPUT PARALLEL 7 0 8 LEVEL This is used to adjust the signal level going into the built in power amplifiers from off up to 40 dB of gain Since the SRM450v2 incorporates Mackie s world class low noise mic preamp technology you can connect either a l
36. verage 90 1 kHz 20 kHz Vertical Coverage 45 2 8 kHz 20 kHz Japan 100 VAC 50 60Hz Recommended amperage service 3 0 amps AC Connector 3 pin 250 VAC Control System Function Electronic Crossover Phase Alignment Equalization Parametric Equalization Safety Features Over Excursion Protection Second Order High Pass Filter Thermal Protection Amplifier shutdown auto reset Low Line Voltage Shut Down 60 Nominal line Driver Protection Independent LF and HF compressors Low F req Roll Off Dynamic signal level dependent Construction Features Basic Design Asymmetrical Trapezoidal Enclosure Alignment Sixth Order Material Polypropylene Finish Black textured finish Handles One on each side one on top Mounting Methods Integrated mounting points M10 Two each located on each side top bottom and rear of enclosure Grille Perforated metal with weather resistant coating Display LEDs Signal Present Peak Power ON and Thermal Physical Properties Height 26 0 in 660 mm Width 15 4 in 890 mm Depth 14 8 in 376 mm Weight 4010 18 kg Options 1 forged shoulder eyebolt hardware M10 1 5 mm x 20 mm SPM200 Speaker Pole Mount Disclaimer Since we are always striving to make our products better by incor porating new and improved materials components and manufacturing methods we reserve the right to change these specifications at any time without notice Mackie
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