Page 3 - Description
Page 3 Peavey 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 qualityaudio performance. We sincerely hope that you enjoy your new SMR 821,and will find other products in t...
Page 4 - Features
Page 4 http://aa.peavey.com copyright 2000 All Rights Reserved SMR 821 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 selectab...
Page 5 - Front Panel Features
Panel Features Page 5 Peavey Electronics Corp Front Panel Features 1. GAIN CONTROL This can also be referred to as a “trim” control. It varies theamount 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...
Page 6 - Rear Panel Features; PAD The Pad switch attenuates the input signal by 20 dB.
SMR 821 User Manual Page 6 http://aa.peavey.com copyright 2000 All Rights Reserved Rear Panel Features 1. CHANNEL 1 MUTE THRESHOLD Adjusts the level of signal needed to trigger the mutingcircuitry in Channel 1. 2. PAD The Pad switch attenuates the input signal by 20 dB. 3. CHANNELS 1-6 INPUT Balance...
Page 7 - Installation
Installation Page 7 Peavey 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 sizerack. Using only a single EIA rack space, the SMR 821 includes integral rackmounting ears and ...
Page 8 - Connections; Bus Link; connectors. All cables for these connections should be; Audio Input; Balanced Microphone or Line Level Input; Figure 1. Balanced Audio Input Connections; Un-Balanced Microphone or Line Level Input; Figure 2. Un-Balanced Audio Input Connections
SMR 821 User Manual Page 8 http://aa.peavey.com copyright 2000 All Rights Reserved Connections Connecting the SMR 821 is not much different than any other analog audioproduct. There are inputs and outputs, but there are also additional connec-tions that you need to be aware of . These include the ex...
Page 9 - Stereo Inputs; Unbalanced RCA connections; Right “Hot” Audio; Mode Switch; Figure 3. RCA Input Connections
Connections Page 9 Peavey Electronics Corp Stereo Inputs Left ShieldLeft “Hot” AudioRight 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 L...
Page 10 - Audio Bus Outputs, Typical For Each Bus; Master Bus Output & Link Connections; These connectors allow you to expand your SMR 821. The; Bus Links; connector has 5 pins for combining multiple SMR 821’s.
Slave Mixer 2 Slave Mixer 1 SMR 821 User Manual Page 10 http://aa.peavey.com copyright 2000 All Rights Reserved Audio PositiveAudio NegativeShield 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...
Page 11 - External Control Connections; Figure 6. Remote Channel 7/8 Select Connections; Remote Volume Control Connections; connector provides a simple way to make these connec-; Remote Channel 7/8 Select Connections; Figure 5. Remote Volume Control Connections
Connections Page 11 Peavey 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 theChannels 7 or 8 input select feature. The selection is done by con-necting a momenta...
Page 12 - Configuration; Figure 7. Input Channel Controls
SMR 821 User Manual Page 12 http://aa.peavey.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...
Page 14 - Music Source; All Buses
SMR 821 User Manual Page 14 http://aa.peavey.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. Goodatmosphere, OK food, high prices, young staff and a sports-oriented bar. This is a great marke...
Page 15 - Hotel Meeting Rooms; feature provides the ability; Remote; ports. In this example, we are linking the main audio and the mute bus.; Emergency Page Source
Applications Page 15 Peavey 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 usedeffec...
Page 16 - Presentation Room; Control; Audio From
Left Right Aux SMR 821 User Manual Page 16 http://aa.peavey.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 acorporate environment, or a large theatre-style classroom in a major un...
Page 17 - Bar
Aux LeftRight Applications Page 17 Peavey 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 withlights and huge flying loudspeaker arrays, etc. Basically, this is the type of bar where you go to get some food, havesom...
Page 18 - Aux; Small House of Worship
LeftRight Aux SMR 821 User Manual Page 18 http://aa.peavey.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 i...
Page 19 - Plant Paging
Applications Page 19 Peavey Electronics Corp Plant Paging For large scale paging applications, the SMR 821 is a cost effective option to digital systems. By using multiple unitsand “busing” common inputs, you can create multiple zone systems. In this example, each area of this facility has it’sown l...
Page 21 - Frequently Asked Questions; No. Only the Master Volume control is capable of external control.
FAQ Page 21 Peavey 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 areusing is assigned to the output ...
Page 23 - Optional Features; Re-installing the Circuit Board and Re-assembling the Unit
Options & Modifications Page 23 Peavey Electronics Corp Optional Features Installing the Optional Microphone Input Transformers The SMR 821 offers optional features for specific job requirements. Theseoptions include Transformers for the microphone inputs and the ability todefeat the functionali...
Page 25 - Cut Jumper Here; Options & Modifications; Channel 7/8 Modification; Refer to Figure 15. “
Cut Jumper Here Options & Modifications Page 25 Peavey 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 “M...
Page 26 - Figure 16. SMR 821 Functional Block Diagram
SMR 821 User Manual Page 26 http://aa.peavey.com copyright 2000 All Rights Reserved Figure 16. SMR 821 Functional Block Diagram
Page 27 - SMR 821 STEREO MIC/LINE PROGRAM MIXER; Figure 17. SMR 821 Equalizer Response Plot
Specifications Page 27 Peavey 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 - Specifications; Weight; Input
SMR 821 User Manual Page 28 http://aa.peavey.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 Moun...
Page 29 - Output Specifications; Mic Input Range without pad:
Specifications Page 29 Peavey Electronics Corp Output Level Output Min LoadImpedance Nom Max Balanced/Unbalanced Connector 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 Vrms0 dBm = 1 mW ...
Page 31 - Architectural Acoustics; PEAVEY ELECTRONICS CORPORATION LIMITED WARRANTY
Warranty Statement Page 31 Peavey Electronics Corp Architectural Acoustics ® PEAVEY ELECTRONICS CORPORATION LIMITED WARRANTY Effective Date: July 1, 1998 What This Warranty Covers Your Peavey Warranty covers defects in material and workmanship in Peavey products purchased and serviced in the U.S.A. ...
Page 32 - Peavey Electronics Corporation; Copyright 2000 All Rights Reserved
Features and Specifications subject to change without notice. A product of Peavey Electronics Corporation 711 A Street / Meridian, MS 39301 / USA / (601) 483-5376 / FAX (601) 486-1678 http://aa.peavey.com Copyright 2000 All Rights Reserved 80304714 Printed in USA 4/2000
