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Peavey SMR 821 manual

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Table of contents for the manual

  • Page 1

    SMR TM 82 1 Stereo Mic/Line Progr am A udio Mix er User Manual Architectural Acoustics[...]

  • Page 2

    SMR 82 1 User Manual WARNING! To prevent electrical shock or potential fire hazards, do not expose the SMR 821 to moisture or rain. Before using this product, read the user manuals for further warnings and cautions. The following cautions should be carefully observed when installing, wiring or using this product: DO NOT use any other power supply o[...]

  • Page 3

    Pa g e 3 Pea v e y Electronics Corp. Welcome Thank You! Thank you for purchasing the SMR 821 Mic/Line Program Mixer. This prod- uct is designed to provide years of trouble-free operation, and high quality audio performance. We sincerely hope that you enjoy your new SMR 821, and will find other products in the Peavey Architectural Acoustics product [...]

  • Page 4

    Pa g e 4 http://aa.pea v e y .com copyright 2000 All Rights Reserved SMR 82 1 User Manual Features - Single rack space package - Eight total inputs (6 balanced Mic/Line, 2 un-balanced stereo) - LED Level/Clip status indicator on each channel - Mic inputs include selectable 48 volt phantom power - Two selectable stereo line inputs (mono or stereo sw[...]

  • Page 5

    P anel Features Pa g e 5 Pea v e y Electronics Corp Front Panel Features 1. GAIN CONTROL This can also be referred to as a “trim” control. It varies the amount of mic preamp gain at the first gain stage. 2. STATUS LED This bi-color LED illuminates green when a signal at -20dBm is pres- ent, and red when the signal level is near clipping. 3. LEV[...]

  • Page 6

    SMR 82 1 User Manual Pa g e 6 http://aa.pea v e y .com copyright 2000 All Rights Reserved Rear Panel Features 1. CHANNEL 1 MUTE THRESHOLD Adjusts the level of signal needed to trigger the muting circuitry in Channel 1. 2. PAD The Pad switch attenuates the input signal by 20 dB. 3. CHANNELS 1-6 INPUT Balanced microphone or line input on removable co[...]

  • Page 7

    Inst allation Pa g e 7 Pea v e y Electronics Corp Installation The SMR 821 is designed to be installed in a standard EIA equipment rack. Since the depth of the unit is only 8-3/4”, you can use practically any size rack. Using only a single EIA rack space, the SMR 821 includes integral rack mounting ears and does not require any additional hardwar[...]

  • Page 8

    SMR 82 1 User Manual Pa g e 8 http://aa.pea v e y .com copyright 2000 All Rights Reserved Connections Connecting the SMR 821 is not much different than any other analog audio product. There are inputs and outputs, but there are also additional connec- tions that you need to be aware of . These include the external control ports and the Bus Link con[...]

  • Page 9

    Connections Pa g e 9 Pea v e y Electronics Corp Stereo Inputs Left Shield Left “Hot” Audio Right Shield Unbalanced RCA connections Right “Hot” Audio Channels 7 and 8 provide two individual inputs for each channel. These are intended for stereo use, as each input (Left, Right) has a fixed assignment to the Left and Right output buses. Additi[...]

  • Page 10

    Slave Mixer 2 Slave Mixer 1 SMR 82 1 User Manual Pa g e 1 0 http://aa.pea v e y .com copyright 2000 All Rights Reserved Audio Positive Audio Negative Shield Audio Bus Outputs, Typical For Each Bus Left Audio Link (L) Right Audio Link (R) Link Shield (SHD) Master Bus & Mute Link Connections Aux Audio Link (A) Mute Bus Link (M) Master Bus Output [...]

  • Page 11

    Connections Pa g e 1 1 Pea ve y Electronics Corp External Control Connections Figure 6. Remote Channel 7/8 Select Connections Remote Volume Control Connections This example shows the connection for remote selection of the Channels 7 or 8 input select feature. The selection is done by con- necting a momentary switch between SEL and SHD. Each time th[...]

  • Page 12

    SMR 82 1 User Manual Pa g e 1 2 http://aa.pea v e y .com copyright 2000 All Rights Reserved Since the SMR 821 is an analog product, there is not a lot of configuration to worry about. No software, no data cables, no networks and no headaches. However, there are a few things to remember while you begin to use your new SMR 821 mixer. The SMR 821 is s[...]

  • Page 13

    Configur ation Pa g e 1 3 Pea ve y Electronics Corp The next step is to configure the SMR 821’s many rear panel switches for your application. Although the unit is shipped from the factory with default switch values, you should make sure that these settings are correct for YOUR application. Let’s take a look at each one, and describe their func[...]

  • Page 14

    SMR 82 1 User Manual Pa g e 1 4 http://aa.pea v e y .com copyright 2000 All Rights Reserved Restaurant You’ve seen them...you know, the trendy restaurants at major off-ramps of every interstate in the country. Good atmosphere, OK food, high prices, young staff and a sports-oriented bar. This is a great market for sound system work, since all of t[...]

  • Page 15

    Applications Pa g e 1 5 Pea ve y Electronics Corp Hotel Meeting Rooms The SMR 821 is a very powerful product for use in meeting rooms. The use of the Bus Link feature provides the ability to combine, separate or control multiple units. In this example, we shall see how multiple SMR 821’s can be used effectively for meeting room applications. Syst[...]

  • Page 16

    Left Right Aux SMR 82 1 User Manual Pa g e 1 6 http://aa.pea v e y .com copyright 2000 All Rights Reserved Presentation Room What exactly is a “Presentation Room” anyway? Well, it could be many things. It could be a small board room in a corporate environment, or a large theatre-style classroom in a major university. Or, it could be a folding t[...]

  • Page 17

    Aux Left Right Applications Pa g e 1 7 Pea v ey Electronics Corp Bar Yeah, you know. A bar...or “club”. This example assumes a small bar with live music, but not a full blown stage with lights and huge flying loudspeaker arrays, etc. Basically, this is the type of bar where you go to get some food, have some adult beverages and kick back. The m[...]

  • Page 18

    Left Right Aux SMR 82 1 User Manual Pa g e 1 8 http://aa.pea v e y .com copyright 2000 All Rights Reserved Small House of Worship For small churches, synagogues or similar houses of worship, the SMR 821 is a perfect choice. A very simple interface, high quality audio performance and multiple outputs make it ideal. Similar products in this price ran[...]

  • Page 19

    Applications Pa g e 1 9 Pea v ey Electronics Corp Plant Paging For large scale paging applications, the SMR 821 is a cost effective option to digital systems. By using multiple units and “busing” common inputs, you can create multiple zone systems. In this example, each area of this facility has it’s own local paging and music audio. A common[...]

  • Page 20

    SMR 82 1 User Manual Pa g e 2 0 http://aa.pea v e y .com copyright 2000 All Rights Reserved Courtroom In this example, we need more than 6 microphones for this courtroom project. Using the SMR 821’s Bus Link feature, we can easily create a 12x2 mixer. The Master mixer feeds the power amplifiers and the logging recorder. Using the Aux output for t[...]

  • Page 21

    FA Q Pa g e 2 1 Pea ve y Electronics Corp Frequently Asked Questions I just hooked up my new SMR 821, and I can’t get audio from any of the outputs. A common cause for this is the Bus Assign switches not being assigned to any of the outputs. Make sure that the input you are using is assigned to the output bus that you have your amplifier connecte[...]

  • Page 22

    SMR 82 1 User Manual Pa g e 2 2 http://aa.pea v e y .com copyright 2000 All Rights Reserved Tech Support Warranty Registration Peavey has an extensive Technical Services Group that provides tech sup- port, repair and implementation services. If you require assistance with your new SMR821, you can get help from several sources. There are many techni[...]

  • Page 23

    Options & Modifications Pa g e 2 3 Pea ve y Electronics Corp Optional Features Installing the Optional Microphone Input Transformers The SMR 821 offers optional features for specific job requirements. These options include Transformers for the microphone inputs and the ability to defeat the functionality of the Channel 7/8 select switch. These [...]

  • Page 24

    SMR 82 1 User Manual Pa g e 2 4 http://aa.pea v e y .com copyright 2000 All Rights Reserved Cut Jumper Here Cut Jumper Here Cut Jumper Here Cut Resistor Here NOTE: Cuts are typical for each channel where the transformers will be installed. Do not cut these jumpers UNLESS a transformer is installed for that channel! BE CAREFUL! Figure 14. Cutaway of[...]

  • Page 25

    Cut Jumper Here Options & Modifications Pa g e 2 5 Pea ve y Electronics Corp Channel 7/8 Modification This modification changes the functionality of the Channel 7/8 front panel select switch and the busing of the audio inputs. When this modification is complete, the front panel switch will act as a “MUTE” switch for all signals connected to[...]

  • Page 26

    SMR 82 1 User Manual Pa g e 2 6 http://aa.pea v e y .com copyright 2000 All Rights Reserved Figure 16. SMR 821 Functional Block Diagram[...]

  • Page 27

    Specifications Pa g e 2 7 Pea v ey Electronics Corp SMR 821 STEREO MIC/LINE PROGRAM MIXER 4-Band Equalizer 0 dBr = +4 dBu -20 +20 -18 -16 -14 -12 -10 -8 -6 -4 -2 -0 +2 +4 +6 +8 +10 +12 +14 +16 +18 d B r 20 20k 50 100 200 500 1k 2k 5k 10k Hz Figure 17. SMR 821 Equalizer Response Plot[...]

  • Page 28

    SMR 82 1 User Manual Pa g e 2 8 http://aa.pea v e y .com copyright 2000 All Rights Reserved Specifications MECHANICAL PERFORMANCE Dimensions (H x W x D) Weight Mounting Connections Test Conditions Input Sensitivity 1.75" x 19" x 8.75" (45 mm x 483 mm x 222 mm) 7.4 lbs. Single EIA Space Rack Mount Removable “Euro” Connectors for s[...]

  • Page 29

    Specifications Pa g e 2 9 Pea ve y Electronics Corp Output Le vel Output Min Load Impedance No m Max Balanced/ Unbalanced Connecto r Left/Right 600 ohms +4dBu +21dBu +19dBm Balanced + – Ground Aux 600 ohms +4dBu +21dBu +19dBm Balanced + – Ground Output Specifications Noise Gain 0 dBu = 0.775 Vrms 0 dBm = 1 mW Output Signal/Noi se (typical) Test[...]

  • Page 30

    SMR 82 1 User Manual Pa g e 3 0 http://aa.pea v e y .com copyright 2000 All Rights Reserved Frequency Response Total Harmonic Distortion Plus Noise Equivalent Input Noise (EIN) Common Mode Rejection Ratio (Mic Input) Crosstalk Adjacent Channels (1kHz) Crosstalk Output to Output (1kHz) Phantom Power Remote Volume Control Channel Mute Signal/Clip Ind[...]

  • Page 31

    W arr anty St atement Pa g e 3 1 Pea ve y Electronics Corp Architectural Acoustics ® PEA VEY ELECTRONICS CORPORA TION LIMITED W ARRANTY Effective Date: July 1, 1998 What This W arranty Covers Y our Peavey Warranty covers defect s in material and workmanship in Peavey products purchased and serviced in the U.S.A. and Canada. What This W arranty Doe[...]

  • Page 32

    Features and S pecifications subject to change without notice. A product of Peavey Electronics Corporation 71 1 A S treet / Meridian, MS 39301 / USA / (601) 483-5376 / F AX (601) 486-1678 http://aa.peavey .com Copyright 2000 All Rights Reserved 80304714 Printed in USA 4/2000[...]