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| Lend Me Your Ears | According to OSHA, any exposure in excess of | |||
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| Exposure to extremely high | these permissible limits could result in some hear- | |||
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| noise levels may cause per- | ing loss. To ensure against potentially dangerous | |||
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| manent hearing loss. | exposure to high sound pressure levels, it is recom- | |||
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| Individuals vary considerably | mended that all persons exposed to equipment | |||
in susceptibility to | capable of producing high sound pressure levels | |||||
nearly everyone will lose some hearing if exposed | (such as this amplification system) use hearing | |||||
to suffi- |
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| protectors | |
ciently | Duration Per Day | Sound Level dBA, | Typical | while this | ||
intense | In Hours | Slow Response | Example | unit is in | ||
noise for a | 8 | 90 | Duo in small club | operation. | ||
period of | 6 | 92 |
| Ear plugs | ||
4 | 95 | Subway Train | ||||
time. The | or protec- | |||||
3 | 97 |
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U.S. |
| tors in the | ||||
2 | 100 | Very loud classical music | ||||
Government’s | ear canals | |||||
1.5 | 102 |
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Occupa- | 1 | 105 | Lori screaming at Ron about deadlines | or over the | ||
tional | 0.5 | 110 |
| ears must | ||
Safety and | 0.25 or less | 115 | Loudest parts at a rock concert | be worn | ||
Health Ad- |
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| when oper- | |
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ministration (OSHA) has specified the permissible | ating this amplification system in order to prevent | |||||
noise level exposures shown in this chart. | a permanent hearing loss if exposure is in excess of | |||||
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| the limits set forth here. |
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INTRODUCTION
Thank you for choosing a Mackie Designs power amplifier! We appreciate your vote of confidence for the folks in Woodinville who specialize in awesome and affordable audio. The Mackie Designs M•1400 and M•1400i Power Amplifiers are designed to fulfill the amplification needs of almost any type of application. They boast a wealth of features you’d expect to pay extra for — like subwoofer filtering, constant directivity equalization,
Perhaps the most important feature of the FR Series™ Power Amplifiers is the attention to detail in every aspect of the design. At Mackie, we know what it takes to be roadworthy. After all, our mixers have traveled all over the world under the worst of conditions, and we’ve applied what we’ve learned to the mechanical design of our amplifiers.
Roadworthiness is only part of the picture. We know that reliability is paramount to sound rein- forcement. That’s why we use
Fast Recovery — where the “FR” comes from
—is more than a buzzword. It is based on real, proven design principles. The result is an amplifier that performs better than conventional designs when presented with adverse conditions. One of the most difficult things for a power amplifier to handle is clipping. Conventional designs use lots of negative feedback to provide stability and lower
Part No. 0000999 Rev. A 12/2001
distortion. When clipping occurs, this “feedback” causes
You may wonder why a power amp even needs an owner’s manual. After all, you just plug in a few cables and power it up. Well, it’s almost that simple. There’s just a few things that we’d like you to be aware of, and we’ll discuss those right away — please see the Quick Start on the next page.
Then go ahead and read the entire manual. The M•1400/M•1400i amplifiers have a wealth of useful features, and each of them is explained in detail.
Note: The only difference between the M•1400 and M•1400i are the speaker output connectors: in addition to the binding posts, the M•1400 has Speakon® connectors while the M•1400i has 1/4" TS jacks.
Please write your serial number here for future reference (i.e., insurance claims, tech support, return authorization, etc.):
Purchased at:Date of purchase:®
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©2001 Mackie Designs, All Rights Reserved.