MartinLogan 210, 212 user manual Glossary of Audio Terms

Page 40

Glossary of Audio Terms

English

AC. Abbreviation for alternating current.

Active crossover. Uses active devices (transistors, IC’s, tubes) and some form of power supply to operate.

Amplitude. The extreme range of a signal. Usually measured from the average to the extreme.

Arc. The visible sparks generated by an electrical discharge.

Bass. The lowest frequencies of sound.

Bi-Amplification. Uses an electronic crossover, or line-level passive crossover, and separate power amplifiers for the high and low frequency loudspeaker drivers.

Capacitance. That property of a capacitor which determines how much charge can be stored in it for a given potential difference between its terminals, measured in farads, by the ratio of the charge stored to the potential difference.

Capacitor. A device consisting of two or more conducting plates separated from one another by an insulating material and used for storing an electrical charge. Sometimes called a condenser.

Clipping. Distortion of a signal by its being chopped off. An overload problem caused by pushing an amplifier beyond its capabilities. The flat-topped signal has high levels of harmonic distortion which creates heat in a loudspeaker and is the major cause of loudspeaker component failure.

CLS. The abbreviation for curvilinear line source.

Crossover. An electrical circuit that divides a full bandwidth signal into the desired frequency bands for the loudspeaker com- ponents.

dB (decibel). A numerical expression of the relative loudness of a sound. The difference in decibels between two sounds is ten times the Base 10 logarithm of the ratio of their power levels.

DC. Abbreviation for direct current.

Diffraction. The breaking up of a sound wave caused by some type of mechanical interference such as a cabinet edge, grill frame or other similar object.

Diaphragm. A thin flexible membrane or cone that vibrates in response to electrical signals to produce sound waves.

Distortion. Usually referred to in terms of total harmonic distortion (THD), which is the percentage of unwanted harmonics of the drive signal present with the wanted signal. Generally used to mean any unwanted change introduced by the device under question.

Driver. See transducer.

Dynamic Range. The range between the quietest and the loud- est sounds a device can handle (often quoted in dB).

Efficiency. The acoustic power delivered for a given electrical input. Often expressed as decibels/watt/meter (dB/w/m).

ESL. The abbreviation for electrostatic loudspeaker.

Headroom. The difference, in decibels, between the peak and RMS levels in program material.

Hybrid. A product created by the marriage of two different technologies. Meant here as the combination of a dynamic woofer with an electrostatic transducer.

Hz (Hertz). Unit of frequency equivalent to the number of cycles per second.

Imaging. To make a representation or imitation of the original sonic event.

Impedance. The total opposition offered by an electric circuit to the flow of an alternating current of a single frequency. It is a combination of resistance and reactance and is measured in ohms. Remember that a speaker’s impedance changes with frequency, it is not a constant value.

Inductance. The property of an electrical circuit by which a varying current in it produces a varying magnetic field that introduces voltages in the circuit or in a nearby circuit. It is measured in henrys.

Inductor. A device designed primarily to introduce inductance into an electrical circuit. Sometimes called a choke or coil.

Linearity. The extent to which any signal handling process is accomplished without amplitude distortion.

Midrange. The middle frequencies where the ear is the most sensitive.

40 Glossary of Audio Terms

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Contents E r ’ s m a n u a l N u e l d e l ’ u t i l i s a t e u r Important Safety Instructions Settings Processor Bass Management SettingsParamètres` Paramètres de gestion des graves du processeur A/VBalancedForce 210 & Balanced Force For Home or Office USESafety Warnings and Installation in Brief English PlacementSignal Connection Power Connection AC see warningTrin 1 Udpakning Trin 2 PlaceringTrin 3 Tilslutning af signal Trin 4 Tilslutning til strøm se advarselTrin 5 Indstilling af kontrolknapperne Vaihe 1 Laitteen purkaminen paketistaAvertissements de sécurité et installation en bref Français Etape 3 PlacementEtape 1 Déballage Etape 2 PositionnementSchritt 1 Auspacken Schritt 3 SignalanschlussSchritt 2 Platzierung Δείτε το τμήμα Είσοδοι Speaker Level για λεπτομέρειες Configurare i controlli Passo 1 Rimozione dall’imballoPasso 2 Posizionamento Connessione전원연결 AC 주의요망 세팅 및 조작Passo 1 Desembalar Passo 2 ColocaçãoШаг 1 распаковка Извлеките новый сабвуфер из упаковки Шаг 5 настройкаPaso 2 ubicación Paso 1 desembaladoPaso 3 conexión de la señal Steg 1 Uppackning Steg 2 PlaceringSteg 3 Anslutning Steg 4 Nätanslutning AC se varningขั้นตอนที่ 5 การตั้งค่าตัวควบคุม Contents and Introduction Top Control Panel Accessing the Control PanelControls Phase Control Low-Pass Filter HzMode Status LightRear Connection Panel ConnectionsAC Power Connection Break-InSignal Connection Channel Mode Line Level RCA or Balanced XLRRecommended Control Settings Signal connection for 2-channel mode Multi-Channel Mode Signal connection for multi-channel mode Simultaneous 2-Channel/ Multi-Channel Mode Signal connection for 2-channel/multi-channel mode Using Speaker Level Inputs Using speaker level inputsLoading a Custom Low-Pass Filter Advanced SetupUpdating Firmware PBK Room Correction Multi Out-Daisy Chaining Multiple SubwoofersOptional Wireless Connection Connecting multiple subsPlacement Subwoofer PositionInstalling in a Cabinet Ask Your DealerSolid Footing Enjoy YourselfRoom Acoustics Standing WavesResonant Surfaces and Objects Resonant CavitiesHome Theater Front Left and Front RightCenter Channel Surround/Effects SpeakersBalancedForce For Cleaner Bass Proprietary Switching Amplifiers25Hz Level Control PBK Perfect Bass KitTroubleshooting Frequently Asked QuestionsFAQ & Troubleshooting Serial Number Warranty and Registration ServiceGeneral Information Specifications Glossary of Audio Terms Resistor. a device used in a circuit to provide resistance Contenu Contenu et IntroductionIntroduction Accéder au panneau de commande CommandesPanneau de commande supérieur Commande de phase ModeLumière de statut Balayage de tonalité Tone SweepRaccords Panneau de raccord arrièreRodage Raccordement de l’alimentation CAMode deux canaux Line Level RCA ou Balanced XLR Raccord de signalParamètres de commande recommandés Veuillez noter que les dessins sont à la page suivanteRaccord de signal pour le mode à deux canaux Mode canaux multiples Raccord de signal pour le mode à canaux multiples Mode simultané deux canaux/canaux multiples Français Utilisation des entrées Speaker Level niveau d’enceinte Chargement d’un filtre de passe basse personnalisée Configuration AvancéeMise à jour du micrologiciel Système de correction de la pièce PBK Perfect Bass Kit Raccord sans fil facultatif Raccordement de caissons de sous-graves multiplesPositionnement Positionnement du caisson de sous-gravesInstallation dans un boîtier Demandez à votre revendeurBase solide Profitez du produitAcoustique de la Pièce Votre pièceTerminologie Surfaces et objets résonnantsCinéma Maison Avant gauche et avant droiteCanal central Enceintes ambiophoniques/à effetsExclusivités MartinLogan Foire aux questions Foire Aux Questions et DépannageDépannage Renseignements Généraux Garantie et enregistrement ServiceNuméro de série Spécifications Glossaire des Termes Audio Glossaire des Termes Audio Page Page Page Page Page MAN0081