Srm450 active sound reinforcement speaker user’s manual and warranty registration.
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 en...
3 part no. 820-158-00 rev. C 10/2000 ©2000 mackie designs inc. All rights reserved. Printed in the u.S.A. 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...
4 introduction thank you for choosing mackie designs’ 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...
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...
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 ...
7 thru output dynamic microphone 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 cords srs1500 plays the low frequencies srs1500 plays the low frequencies 1202-vlz pro srm45...
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...
9 contour pushing in this switch engages a filter that provides 3 db of boost to the low and high frequencies (below 100hz and above 12khz). 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 ...
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...
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...
12 heatsink thermal transformer 120v 120v 240v high voltage power line earth ground (neutral) primary winding secondary winding 240v center-tapped secondary peak low cut ac power considerations be sure the srm450 is plugged into an outlet that is able to supply the correct volt- age specified for yo...
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...
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...
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...
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...
17 specifications transducer specifications low-frequency transducer diameter 300mm (12”) voice coil diameter 63.5mm (2.5”) sensitivity (1w@1m) 98 db nominal impedance 8 ohms power handling 450 watts, program frequency range 45hz – 3khz high-frequency driver and horn diaphragm diameter 44.5mm (1.75˝...
18 srm450 block diagram input thr u 2 3 1 2 j15 3 1 hi-p ass low cut cont o ur compressor threshold compressor sweeping fil ter lo-p ass dela y 176us hi-freq 40-120 hz lo-frequency driver tw eet 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 ...
19 a. Mackie warrants all materials, workmanship and proper operation of this srm450 for a period of one year from the original date of purchase. If you complete the optional questionnaire portion of the product registration card, the warranty will be extended for an additional four years with the f...
® ® ® ™ mackie designs inc. Mackie designs inc. 16220 wood-red rd. Ne • woodinville, wa 98072 • usa us & canada: 800/898-3211 europe, asia, central & south america: 425/487-4333 middle east & africa: 31-20-654-4000 fax: 425/487-4337 • www.Mackie.Com e-mail: sales@mackie.Com some of the people at our...
