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Mackie SRM-450 System

1. Fower Cords SWA1501 plays the low frequencies SRM450 BIAMPING WITH POWERED SUBWOOFER 7 REAR PANEL DESCRIPTION The SRM450 has several connectors TIMED TURNOFF controls and indicators that you should When this switch is pushed in the built understand in amplifiers turn on and off depending on IEC Socket the presence or absence of an input signal An input signal level of 45 dBu mini mum 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 This is where you connect the supplied AC linecord to provide AC power to the SRM450 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 line cord replacements are readily available at THERMAL Indicator any office or computer supply store Always use a three pin plug with a ground pin This LED lights if the heatsink tempera ture exceeds a safe operating temperature POWER Switch and triggers the thermal safety switch When 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 POWER ON Indicator off and normal operation resumes When the POWER switch is
2. SRM450 ACTIVE SOUND REINFORCEMENT SPEAKER USER S MANUAL 8 Heat This Mackie product should be situated away from heat CAUTION AVIS sources such as radiators or other devices which produce heat RISK OF ELECTRIC SHOCK 9 Power Sources This Mackie product should be connected to a DO NOT OPEN power supply only of the type described in these operation RISQUE DE CHOC ELECTRIQUE instructions or as marked on this Mackie product NE PAS OUVRIR En 10 Power Cord Protection Power supply cords should be routed MR CO SR ECO ion BACK so that they are not likely to be walked upon or pinched by items NO USER SERVICEABLE PARTS INSIDE placed upon or against them paying particular attention to cords at RETER SERVICING TO QUANFIED PERSONNEL plugs convenience receptacles and the point where they exit this ATTENTION POUR EVITER LES RISQUES DE CHOC Mackie roduct ELECTRIQUE NE PAS ENLEVER LE COUVERCLE AUCUN p ENTRETIEN DE PIECES INTERIEURES PAR L USAGER CONFIER eus L ENTRETIEN AU PERSONNEL QUALIFIE 11 Object and Liquid Entry Care should be taken so that AVIS POUR EVITER LES RISQUES D INCENDIE OU objects do not fall into and liquids are not spilled into this Mackie D ELECTROCUTION N EXPOSEZ PAS CET ARTICLE ALA PLUIE OU A L HUMIDITE product 12 Damage Requiring Service This Mackie product should be The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the pres
3. 2 Cold Pin 3 Shield Ground Pin 1 There is also a male XLR connector la beled THRU This allows you to connect more than one SRM450 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 imped ance ten times or more than the source impedance to prevent ex cessive loading on the source For example if your mixer has an output impedance of 120 ohms then you can daisy chain up to sixteen SRM450s This is a load of 1250 ohms SRM450 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 SRM450s see the diagram on page 7 The THRU jack is wired straight from the INPUT connector there is no elec tronic circuitry between so the signal coming out of the THRU jack is exactly the same as the signal going in Balanced XLR Connectors IW p lt OEY EEEN ESC 10 PLACEMENT The SRM450 active speakers are de signed 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 t
4. from that in the high frequency amp e 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 main tains 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 amplifer and the woofer and reducing any noticable distortion Warning Although the amplifiers have these protection circuits you must still make sure the PEAK light is not blink ing continuously If it is turn down your mixer faders or preamplifier gain or turn down the SRM450 LEVEL control z fs gt The Crossover The built in electronic crossover is a 24 dB octave Linkwitz Riley design Although more expensive than other cross over designs the benefits provided by the Linkwitz Riley design have been well docu mented These benefits include e Absolutely flat frequency response throughout the bandpass without the characteristic ripple near the crossover point exhibited by other designs e The sharp 24 dB per octave roll off of
5. 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 you re ready to rock and roll The cool blue LED on the front of the speaker works in the same way Switch up to turn the SRM450 on and switch down to turn it off Make sure the level control is down before you turn it on If the SRM450 keeps shutting down make sure there is plenty of ventilation to the rear panel Please see Ther mal Considerations on page 12 gt TEEN Se ee PRESENT Pr i Cae ous 7 LINE MIC OFF 7 I TIMED TURNOFF 100HZ 12k AIR 75HZ co ee CONTOUR 333 _ LOW CUT 120 VAC 60HZ 320W a S POWER TH yo IN x DESIGNED BY MACKOIDS IN WOODINVI e USA Ch LA D lt PARALLEL LLEL O CONTOUR Pushing in this switch engages a 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 de termine which way sounds best for your application It is especially useful when lis tening at lower volumes as it highlights the bass like a Loudness switch in addition to boosting the highs LOW CUT Pushing in this switch engages a low cut filter which rolls off the low frequencies be low 75 Hz This is us
6. eful for minimizing stage noise rumble and microphone han dling noise It is highly recommended that you engage this switch when using the SRM450 as a stage moni tor This allows the bass amplifier to utilize its power for those fre quencies useful in stage monitor applications LEVEL This is used to adjust the signal level go ing into the built in power amplifiers from Off up to 40 dB of gain Since the SRM450 incorporates Mackie s world class low noise mic preamp technology you can connect either a line level or a microphone level signal to the input and use this control to adjust the level correctly aa 5 a ce gt There is no phantom power for a microphone so you should use a dynamic mic or use a condensor type if it has its own battery power 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 particu larly high line level signal connected to the SRM450 you may need to turn the control down to the LINE indication 9 o clock If you 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 z z a z gt 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 ev
7. en if the LEVEL control is turned down the SIGNAL PRESENT indicator still works PEAK Indicator When the signal levels at the amplifier outputs approach clipping a soft compres sion circuit is activated that reduces the input signal The PEAK LED lights when ever the compression circuit is active At this time the SRM450 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 continuously either turn down the signal level at the mixer or other signal source or turn down the SRM450 s LEVEL control Wear hearing protection if you are close to the SRM450 playing at high levels z A a gt INPUT Connector This is a female XLR type connector that accepts a balanced or unbalanced mic or line level signal 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 ACCESSORY Plate This removable plate provides access to install future accessory modules CONNECTIONS The SRM450 has a female XLR input that accepts a balanced or unbalanced mic or line level signal When connecting a bal anced signal be sure it s wired per AES Audio Engineering Society standards XLR Hot Pin
8. ence of uninsulated serviced only by qualitied service personnel when dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons A The power supply cord or the plug has been Le symbole clair avec point de fl che l int rieur d un triangle quilat ral est utilis pour alerter l utilisateur de la pr sence a l int rieur du coffret de voltage dangereux non isol d ampleur damaged or suffisante pour constituer un risque d l ctrocution B Objects have fallen Or liquid has spilled into this The exclamation point within an equilateral triangle is intended to Mackie product or alert the user of the presence of important operating and maintenance servicing instructions in the literature accompanying the appliance C This Mackie product has been exposed to rain or Le point d exclamation a l int rieur d un triangle quilat ral est employ pour alerter les utilisateurs de la pr sence d instructions D This Mackie product does not appear to operate importantes pour le fonctionnement et l entretien service dans le aise livret d instruction accompagnant l appareil normally or exhibits a marked change in performance or SAFETY INSTRUCTIONS NDSS E This Mackie product has been dropped or its chassis 1 Read Instructions All the safety and operation instructions damaged should be read before this Mackie product is operated 7 one 13 Servici
9. ency woofer and a 1 75 inch titanium diaphragm high output precision 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 frequen cies 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 Each driver has been specifically designed by our engineers for optimum performance in the lightweight high strength cabinet FR Series Power Amplifiers To power these beautiful things each SRM450 includes two of our acclaimed FR Series Fast Recovery power amplifiers Our exclusive design uses low negative feedback yet allows the amplifiers to maintain low dis tortion and stability 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 300 continuous before clipping e The high frequency amplifier produces up to 150 watts peak 100 continuous before clipping e Each amplifier has its own compressor circuit that acts when the input signal is large enough to cause clipping distor tion 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
10. he SRM450 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 recom mend 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 be co CE z LI gt The SRM450 generates magnetic fields Do not place them closer than two or three feet 60 100 cm from TV or computer monitors Check the screen for any change in color or distortion Do not place any magnetic audio or video tapes or computer discs near the SRM450s VERY IMPORTANT Room Acoustics The SRM450 active speakers are de signed to sound as neutral as possible that is to reproduce the input signal as accu rately 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 disper sion of the SRM450 helps to minimize the problems that typically arise 90 Dispersion lt up to 20 kHz
11. 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 SRM450 LEVEL control before investigating There may be a mixer or preamplifier mute or tape switch engaged or a mic switch off THERMAL PEAK SIGNAL PRESENT NORMAL 4dBu f LR UNE Mic K Left Right Line level Line level Output Output Mixer or Preamplifier For microphone connections you can daisy chain up to two SRM450s using the THRU jacks as shown Take great care to point any micro phones away from the SRM450s otherwise you may get feedback A Dynamic Microphone The SRM450 can be used with a Mackie SWA1501 or SWA1801 subwoofer to create an in credibly powerful system The active crossover inside the SWA1501 splits the full range input signal into two ranges The SWA1501 plays the low frequency range through its 500 watt ampli fier and 15 inch woofer and sends the high pass range to the SRM450 The SRM450 can be pole mounted on top of the SWA1501 as shown saving the cost of a tripod stand Line level Hi pass out Line level Hi pass out SWA1501 plays the low frequencies
12. ng The user should not attempt to service this 2 Retain Instructions The safety and operating instructions Mackie product beyond those means described in this operating should be kept for future reference manual All other servicing should be referred to the Mackie Service 3 Heed Warnings All warnings on this Mackie product and in Department these operating instructions should be followed 14 To prevent electric shock do not use this polarized plug with an extension cord receptacle or other outlet unless the blades can be 4 Follow Instructions All operating and other instructions fully inserted to prevent blade exposure should be followed 5 Water and Moisture This Mackie product should not be used OU pr venir les chocs lectriques ne pas utiliser cette fiche near water for example near a bathtub washbowl kitchen sink polarise avec un prolongateur un prise de courant ou une autre laundry tub in a wet basement near a swimming pool swamp or sortie de courant sauf si les lames peuvent tre ins r es fond salivating St Bernard dog et sans laisser aucune pariie d couvert 15 Grounding or Polarization Precautions should be taken so that the grounding or polarization means of this Mackie product is 7 Ventilation This Mackie product should be situated so not defeated that its location or position does not interfere with its proper ventilation For example the Component should no
13. requency 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 compro mised 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 electroni cally as well as physically so the amplitude response is flat and there is no lobing error The presence of active circuits within the speaker cabinet allow the designer to add on extra details such as a high quality mic line input section and optional accessory modules In short all the complex interconnected components in the system are designed to work in harmony with each other to pro duce the best possible sound Even for Uncle Bert s star performance on spoons HOOKUP DIAGRAMS Quick Start 1 Start with the following settings on the 5 a Belial gt back of the SRM450 Turn the POWER switch off down Set the TIMED TURNOFF CONTOUR and LOW CUT switches out WARNING Turn the LEVEL cont
14. rol 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 SRMA450 It accepts balanced line level signals from mixers preamplifiers CD players tape decks etc and accepts direct connections from dynamic microphones 2 m zm amp E ze AE 6 Daisy chaining SRM450s o y J SRM450 STEREO OPERATION WITH A MIXER AND USING THE THRU JACK Connect the supplied AC power cord to the IEC socket on the back of the SRM450 Plug the other end into an AC outlet properly configured with the correct voltage for your particular model Turn on your signal source Make sure its Master Volume control if it has one is turned all the way down Turn on the SRM450 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 SRM450 until the desired volume is reached and the PEAK
15. s Individuals vary considerably in susceptibility to noise in duced 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 speci fied the permissible noise level exposures shown in this chart Duration Per Day Sound Level dBA In Hours Slow Response 90 92 95 97 100 102 105 0 5 110 0 25 or less 115 CONTENTS INTRODUCTION HOOKUP DIAGRAMS Quick Start REAR PANEL DESCRIPTION IEC Socket POWER Switch POWER ON Indicator TIMED TURNOFF THERMAL Indicator CONTOUR LOW CUT SIGNAL PRESENT Indicator PEAK Indicator INPUT Connector THRU Connector ACCESSORY Plate According to OSHA any exposure in excess of these permissible limits could result in some hearing loss To ensure against potentially dangerous exposure to high sound pressure levels it is recommend ed that all persons exposed to equipment capable of producing these levels use hearing protectors while this unit is in operation Ear plugs or protectors in the ear canals 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 Typical Example Duo in small club Subway Train Very loud classical music Tami screaming at Adrian about deadlines Loudest parts at a rock concer
16. t SERVICE INFORMATION Warranty Service Troubleshooting CARE AND MAINTENANCE SRM450 SPECIFICATIONS SRM450 BLOCK DIAGRAM SRM450 LIMITED WARRANTY Don t forget to visit our website at www mackie com for more information about this and other Mackie products Part No 820 158 90 Rev A 10 03 2003 LOUD Technologies Inc All Rights Reserved The SRM450 can produce a maximum SPL of 127 dB 1m INTRODUCTION Thank you for choosing LOUD Technologies Mackie active sound reinforcement speakers The SRM450 is an active two way loud speaker capable of extremely high sound pressure levels and designed to give you the best performance of any loudspeaker in its class and price range Our design goal was to build a sound re inforcement speaker with 1 High precision high output and accu rate 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 RCF our transducer manufacturing facil ity in Italy 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 SRM450 active speakers feature a 12 inch high power low frequ
17. t 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 17 This apparatus does not exceed the Class A Class B whichever is applicable limits for radio noise emissions from digital apparatus as set out in the radio interference regulations of the Canadian Department of Communications 6 Cleaning Clean only with a dry cloth 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 trom the AC mains when the power switch is in the OFF position PORTABLE CART WARNING Carts and stands The ATTENTION Le pr sent appareil num rique n met pas de bruits ee should be P radio lectriques d passant las limites applicables aux appareils ia een A num riques de class A de class B selon le cas prescrites dans le He us r glement sur le brovillage radio lectrique dict par les ministere A Component and cart des communications du Canada combination should be moved with care Quick stops excessive force and uneven surfaces may cause ee DS WARNING To reduce the risk of fire or electric shock do not expose this appliance to rain or moisture Lend Me Your Ears Exposure to extremely high noise levels may cause permanent hear ing los
18. 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 e Our heroic engineers have worked carefully to ensure that the SRM450 also provides perfect phase response This diligence has yielded phenomenal accuracy even if you are standing 20 feet away The Cabinet The SRM450 cabinet was designed to be the strongest molded composite cabinet on the planet This material is as strong as con crete 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 asym metrical 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 us ing 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 f

Mackie SRM-450 System

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