Mackie SRM 450 User Manual - Contents

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Lend Me Your Ears

Exposure to extremely

high noise levels may

cause permanent hear-

ing loss. 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.

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.

Duration Per Day Sound Level dBA,

Typical

In Hours

Slow Response

Example

Duo in small club

Subway Train

100

Very loud classical music

1.5

102

105

Tami screaming at Adrian about deadlines

0.5

110

0.25 or less

115

Loudest parts at a rock concert

INTRODUCTION

....................................................... 4

HOOKUP DIAGRAMS

............................................... 6

Quick Start

........................................................ 6

REAR PANEL DESCRIPTION

.................................... 8

IEC Socket

.................................................. 8

POWER Switch

............................................ 8

POWER ON Indicator

................................... 8

TIMED TURNOFF

......................................... 8

THERMAL Indicator

..................................... 8

CONTOUR

.................................................. 9

LOW CUT

.................................................... 9

LEVEL

......................................................... 9

SIGNAL PRESENT Indicator

........................ 9

PEAK Indicator

............................................ 9

INPUT Connector

........................................ 9

THRU Connector

......................................... 9

ACCESSORY Plate

...................................... 9

CONNECTIONS

...................................................... 10

PLACEMENT

.......................................................... 10

RIGGING

................................................................ 11

THERMAL CONSIDERATIONS

................................ 12

AC POWER CONSIDERATIONS

.............................. 12

SERVICE INFORMATION

........................................ 14

Warranty Service

............................................. 14

Troubleshooting

............................................... 14

Repair

............................................................. 16

CARE AND MAINTENANCE

.................................... 16

SRM450 SPECIFICATIONS

..................................... 17

SRM450 BLOCK DIAGRAM

.................................... 18

SRM450 LIMITED WARRANTY

............................... 19

Don’t forget to visit our website at

www.mackie.com

for more information about this and other Mackie products.

The SRM450

can produce a

maximum SPL

of 127 dB @ 1m.

Part No. 820-158-90 Rev. A 10/03

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Summary of SRM 450

Page 1
Srm450 active sound reinforcement speaker user’s manual.
Page 2
2 caution avis risk of electric shock do not open risque de choc electrique ne pas ouvrir caution: to reduce the risk of electric shock do not remove cover (or back) no user-serviceable parts inside refer servicing to qualified personnel attention: pour eviter les risques de choc electrique, ne pas ...
Page 3: Contents
3 lend me your ears exposure to extremely high noise levels may cause permanent hear- ing loss. 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. Governme...
Page 4: Introduction
4 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 desig...
Page 5
5 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: • absolutely flat frequency response throughout t...
Page 6: Hookup Diagrams
6 hookup diagrams quick start 1. Start with the following settings on the back of the srm450: 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 ...
Page 7
7 thru output dynamic microphone designed by mackoids in woodinville, wa • usa designed by mackoids in woodinville, wa • usa srm450: using a microphone and the thru jack power cord power cord pole mount pole mount line-level hi-pass out line-level hi-pass out full range full range power cords power ...
Page 8: Rear Panel Description
8 rear panel description 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 (mini- mum) activates the auto-on function. A silent period greater than three minutes activates th...
Page 9
9 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 t...
Page 10: Placement
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 the srm450 as a floor monitor. The asymmetrical tra...
Page 11: Rigging
11 here are some other placement tips: • avoid placing loudspeakers in the corners of a room. This increases the low-fre- quency 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 a...
Page 12: Ac Power
12 ac power considerations be sure the srm450 is plugged into an outlet that is able to supply the correct volt- age 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...
Page 13
13 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 s...
Page 14: Service Information
14 service information warranty service details concerning warranty service are spelled out on page 19 of this manual. If you think your loudspeaker has a problem, please do everything you can to confirm it before calling for service, includ- ing reading through the following troubleshooting section...
Page 15
15 • make sure there is room behind the rear panel to provide sufficient ventilation to the heatsink. Bad sound! • is it 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 com- pletely into the...
Page 16: Repair
16 repair service for the srm450 is available only from one of our authorized domestic ser- vice stations or at the factory, located in sunny woodinville, washington. Service outside the united states can be obtained through local dealers or distributors. If your srm450 needs service, please fol- lo...
Page 17: Srm450 Specifications
17 srm450 specifications line input power us 120 vac, 60hz recommended amperage service 2.5 amps europe 230 vac, 50hz recommended amperage service 1.25 amps japan 100 vac, 50/60hz recommended amperage service 3.0 amps ac connector 3-pin iec 250 vac control system function electronic crossover phase ...
Page 18: Srm450 Block Diagram
18 srm450 block diagram input thr u 2 3 1 2 j15 3 1 hi-p ass low cut cont our compressor threshold compressor sweeping fil ter lo-p ass dela y 176us hi-freq 40-120 hz lo -frequency driver tweet lo-freq amp hi-freq amp sense resis to r b a ss contr ol ser vo l o op woof peak light peak detection ma c...
Page 19: Srm450 Limited Warranty
19 a. Loud technologies inc. Warrants all materials, workmanship and proper operation of this mackie srm450 for a period of five years from the original date of purchase with the following exception: warranty on all its loudspeaker components including woofers and compression drivers are only warran...
Page 20: Loud Technologies Inc.
Loud technologies inc. 16220 wood-red road ne • woodinville, wa 98072 • usa us 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.

CONTENTS

Summary of SRM 450