Manuals / Dynaudio / Home Audio / Speaker

Dynaudio pmn manual Acoustics - Background Info, Room modes, Axial Tangential Radial

Models: pmn

1 60

Download 60 pages 63.12 Kb

Page 36

Image 36

Air_US_rev_111.qxd 16-12-2004 14:17 Page 34

ACOUSTICS - BACKGROUND INFO

Room modes

These special frequencies are also called room modes. Standing waves between parallel walls are called axial modes. Other modes exist. For instance tangential and radial modes. (See the illustration). Normally the axial modes are the strongest.

Axial

Tangential

Radial

Page 36

Image 36

Dynaudio pmn Acoustics - Background Info, Room modes, Axial Tangential Radial, Air US rev 111.qxd 16-12-200414 17 Page

Contents

Air US rev 111.qxd 16-12-200414 14 Page Air US rev 111.qxd 16-12-200414 14 Page IMPORTANT SAFETY INSTRUCTIONS VoltageLine plug according to standard Air US rev 111.qxd 16-12-200414 14 Page aQUICK SETUP REFERENCE Air US rev 111.qxd 16-12-200414 15 Page bQUICK SETUP REFERENCE Air US rev 111.qxd 16-12-200414 15 Page cTABLE OF CONTENTS Setting up of the AIR SOFTHow To Measure the Sound Pressure Operating AIR SOFTINTRODUCTION This ManualBreak in The Product ConceptRemote Control Common FeaturesThe Master Unit The Slave & Sub UnitsREAR PANEL DESCRIPTION - MASTER Master Unit - Analog I/OSlave/Sub Optional Digital I/O cardOPERATIONAL OVERVIEW Preset locationsMain Display Select Task No taskTHE AIR DISPLAY & SETTING UP Setting up - IntroductionGeneral Setup Procedure parameters using the AIR displaySETUPS Stereo SetupStereo Setup with mono Subs Stereo Setup with stereo Subs5.1 Digital Setup 5.1 Analog SetupSETUPS To set a Master5.3 Digital Setup 5.3 Analog SetupSETUPS 6.1 Analog Setup 5.1 Dig/6 - MasterSETUPS Stereo Setup With Chains on L & R Other “Chained” SetupsSETUPS 5.1 Digital - 192 kHz 6.1 Digital - 192 kHzSETUPS SETUPS 5.3 Digital SetupWith Bass management “on” WHEN THE MONITORS ARE CONNECTED OverviewPARAMETER DESCRIPTION Basic operation in all menusMain Display Bass ManagementSetup Menu SetupPARAMETER DESCRIPTION Set Monitor TaskPresets In General LFE channel - noteRecall StorePLACING THE MONITORS OverviewPLACING THE MONITORS Free Standing Wall Corner ConsoleFree standing / Neutral Close to wall / WallCHECKING - THE PLACEMENT OF THE MONITORS EvaluationOverview CHECKING - PLACEMENT OF THE MONITORS CALIBRATING - MAIN MONITORS X-CURVESCalibration procedure OverviewPLACING THE SUBWOOFER Placement on the floorPlacement in the corner OverviewCHECKING - SUBWOOFER PLACEMENT OverviewTo Calibrate Bass ManagementPhase LFE GainPolarity ACOUSTICS - BACKGROUND INFO AcousticsOne sound source, one receiver and no room Only the direct sound is receivedSabines formula ACOUSTICS - BACKGROUND INFOAbsorbers DiffusersACOUSTICS - BACKGROUND INFO Membrane absorbersBACKGROUND INFO - ACOUSTICS Standing WavesACOUSTICS - BACKGROUND INFO Room modesAxial Tangential Radial Air US rev 111.qxd 16-12-200414 17 PageHow to prohibit standing waves ACOUSTICS - BACKGROUND INFOf = c + nbACOUSTICS - BACKGROUND INFO This is also called a 4 π radiationComb Filtering ACOUSTICS - BACKGROUND INFOACOUSTICS - BACKGROUND INFO or +Dip frequencies Rear wall cancellation ACOUSTICS - BACKGROUND INFOTHE SUBWOOFER - BACKGROUND INFO The SubwooferBass management L C R Ls Rs Σ SubTHE SUBWOOFER & LFE CHANNEL - BACKGROUND INFO The LFE ChannelDELAYING MONITORS Acoustic summation of audio signalsLINE-UP& CALIBRATION How to measure the sound pressure? LINE-UP& CALIBRATION - BACKGROUND INFOCalibration of 5.1 in an ITU-775arrangement THE AIR REMOTE IntroductionPRESET 1/3 AND 2/4 keys VOLUME potentiometerTHE AIR REMOTE REF LEVEL 1-3keysPress to enter preset list AIR SOFTNavigating AIR SOFT Main ToolsVOLUME dialer AIR SOFTPreset List NetworkAIR SOFT System Setup AIR SOFTCalibrate - Main Monitors Monitor assignmentCalibrate - AIR BASE Chained monitorsAIR SOFT Reset Procedures MISCELLANEOUSGlobal Parameters Local ParametersCABLES TC LINK Standard Cat-5cablesAES/EBU Standard cables Serial to Cat-5cableAIR TECHNICAL SPECIFICATIONS Air US rev 111.qxd 16-12-200414 18 PageModel FinishAIR TECHNICAL SPECIFICATIONS Air US rev 111.qxd 16-12-200414 18 PageSystem FinishAIR TECHNICAL SPECIFICATIONS SafetyWarranty Air US rev 111.qxd 16-12-200414 18 PageDELAY IN SYSTEM & ERROR MESSAGES ETC Error messages etcCERTIFICATE OF CONFORMITY Certificate Of ConformityAIR AIR AIR AIR AIR BASE AIR BASE AIR REMOTE PRESET LIST Air US rev 111.qxd 16-12-200414 18 Page