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SRM450v2
Powered Loudspeaker
OWNER’S MANUAL
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IMPORTANT SAFETY INSTRUCTIONS 1. Read these instructions. 20. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC 2. Keep these instructions. Rules. These limits are designed to provide reasonable protection 3. Heed all warnings. against harmful interference in a residential installation. This 4. Follow all instructions. equipment generates, uses, and can radiate radio frequency energy 5. Do not use this appa
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Contents IMPORTANT SAFETY INSTRUCTIONS .......................................2 CONNECTIONS ......................................................................10 INTRODUCTION .......................................................................4 PLACEMENT ...........................................................................10 HOOKUP DIAGRAMS ..............................................................6 Room Acoustics .............................................................10 Qu
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INTRODUCTION • Each amplifier has its own compressor circuit that acts Thank you for choosing LOUD Technologies’ Mackie when the input signal is large enough to cause clipping, active sound reinforcement loudspeakers. distortion and excessive voice coil heat. The compressor The SRM450v2 is a redesigned version of our will automatically decrease the input signal to a safe popular SRM450 active loudspeaker. With its newly level. The compressor in the low-frequency amp works designed Cla
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The Cabinet The SRM450v2 cabinet was designed to be the strongest • T h e a m p l i fi e r s a r e d e s i g n e d s p e c i fi c a l l y f o r t h e s e molded composite cabinet on the planet. This material is as speaker load impedances. There is no guesswork as strong as concrete, and rigid enough to prevent unwanted to what load each amplifier has to drive, so they can vibrations in the cabinet. It has built-in fly points for provide maximum acoustic output from the speaker
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HOOKUP DIAGRAMS Quick Start 1. Start with the following settings on the back of the 4. Turn on your signal source. Make sure its Master SRM450v2: Volume control (if it has one) is turned all the Turn the POWER switch off (down). way down. Set the TIMED TURNOFF, CONTOUR, and LOW CUT 5. Turn on the SRM450v2 POWER switch. switches out. 6. Start the signal source, whether it be speaking into a WARNING: Turn the LEVEL control microphone or starting a CD player. Adjust any volume down (cou
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For microphone connections, you can daisy-chain up to two SRM450v2s using the THRU jacks as shown. Dynamic Microphone Take great care to point any microphones away from the SRM450v2s, otherwise you may get feedback. THERMAL PEAK SIGNAL PRESENT THERMAL PEAK SIGNAL PRESENT NORMAL NORMAL (+4dBu) (+4dBu) POWER POWER ON LINE MIC ON LINE MIC OFF OFF 100Hz 12k/AIR 75Hz 100Hz 12k/AIR 75Hz TIMED TURNOFF TIMED TURNOFF +40dB +40dB ON CONTOUR +3dB LOW CUT ON CONTOUR +3dB LOW CUT LEVEL LEVEL O O THRU I
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5. THERMAL Indicator REAR PANEL DESCRIPTION This LED lights if the heatsink temperature exceeds a The SRM450v2 has several connectors, controls, and safe operating temperature and triggers the thermal safety indicators that you should understand. switch. In the unlikely event that this occurs, the built-in 1. IEC Socket amplifiers shut down until the heatsink temperature cools back down. Then the thermal switch resets itself, the This is where you connect the supplied AC linecord to THER
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8. LEVEL 10. PEAK Indicator This is used to adjust the signal level going into the When the signal levels at the amplifier outputs approach built-in power amplifiers, from off, up to 40 dB of gain. clipping, a soft compression circuit is activated that reduces Since the SRM450v2 incorporates Mackie’s world-class the input signal. The PEAK LED lights whenever the low-noise mic preamp technology, you can connect either a compression circuit is active. At this time, the SRM450v2 line-level or
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CONNECTIONS PLACEMENT The SRM450v2 has a female XLR input that accepts a The SRM450v2 active speakers are designed to sit on the balanced or unbalanced mic- or line-level signal. When floor, a tabletop, or to fit on a standard tripod speaker stand. connecting a balanced signal, be sure it’s wired per AES They can also be suspended by the rigging points, shown (Audio Engineering Society) standards: opposite. XLR You can lay the cabinet down on its side and use the Hot (+) Pin 2 SRM4
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Here are some other placement tips: RIGGING • A v o i d p l a c i n g l o u d s p e a k e r s i n t h e c o r n e r s o f a r o o m . The SRM450v2 cabinets are fitted with ten rigging points This increases the low-frequency output and can cause as shown in the diagram below. These are M10 inserts. M10 the sound to be muddy and indistinct. threaded eyebolts (M10 x 1.5 mm x 20 mm) are available to fit these inserts (PA-A1 Eyebolts). • A v o i d p l a c i n g l o u d s
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THERMAL CONSIDERATIONS AC POWER CONSIDERATIONS The amplifiers inside the SRM450v2s are Be sure the SRM450v2 is plugged into an outlet that is convection cooled by a large heatsink. able to supply the correct voltage specified for your model. For efficient cooling, it is important to If the voltage should drop below 97% of the specified line allow at least six inches of free space voltage, the built-in amplifiers will no longer be able to behind the SRM450v2. supply rated power. (They will co
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For the US 120 V model: Don’t use an outlet if it is wired A maximum of five SRM450v2s can be connected per 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. When turning your system on, turn on the SRM450v2s Never remove the ground pin on the last. This will stop any turn-on thumps and bangs from your power cord of the SRM450v2 or any source equipment being amplified. other component. This
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SERVICE INFORMATION If you think your Mackie product has a problem, One side is way louder than the other! please check out the following troubleshooting tips and • A r e t h e L E V E L c o n t r o l s s e t t h e s a m e o n b o t h a c t i v e do your best to confirm the problem. Visit the Support speakers? section of our website (www.mackie.com/support) • C h e c k t h e P A N c o n t r o l o r b a l a n c e o n t h e s i g n a l s o u r c e . whe
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Noise • D i s c o n n e c t a n y c a b l e s w h i c h c o m e i n f r o m o u t s i d e , • Make sur e all connections to the active speakers such as cable TV, satellite TV or roof top antennas. They are good. must be disconnected from every part of your system, • Make sur e none of the signal cables ar e routed near such as the TV, VCR and preamp. If the hum goes away, AC cables, power transformers, or other EMI-inducing you can add a “ground loop isolator
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26.0 in/660 mm 14.8 in/376 mm Repair Dimensions For warranty service, refer to the warranty 15.4 in/390 mm 14.8 in/376 mm information on page 19. Non-warranty service for Mackie products is available at a 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. If you do not
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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 Hz – 20 kHz Recommended amperage service 1.25 amps Directivity Factor; Q (DI) 9.95 (9.98), averaged 2 kHz to 10 kHz Japan 100 VAC, 50/60Hz Max SPL Long-term @ 1m Recommended amperage service 3.0 amps 124 dB AC Connector 3-pin IEC 250 VAC Max SPL Peak @ 1m
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SRM450v2 BLOCK DIAGRAM 18 THRESHOLD LOW CUT CONTOUR J15 HI-PASS HI-FREQ 2 HI-FREQ TWEET INPUT AMP 3 1 COMPRESSOR 2 THRU 3 THERMAL POWER SIGNAL 1 LED LED LEDS PEAK THERMAL SIGNAL DETECTION SENSE SWITCH MUTE MUTE PEAK MUTE LIGHT ON/OFF LOW AC CONTROL VOLTS SENSE +15VDC TIMED TURNOFF OFF LO-FREQUENCY SIGNAL COMPRESSOR 40-120 Hz DELAY LO-PASS DRIVER SENSE ON 176uS SWEEPING POWER LO-FREQ FILTER FUSE SWITCH WOOF AMP + + SWITCHING POWER MID VDC HI VDC THRESHOLD LPF THRESHOLD CONTROLLER – – BASS CONTROL
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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 original purchaser of the product (hereinafter, “Customer,” “you” or “your”). For products purchased outside the U.S. or Canada, please visit www.ma
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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
