AKG Acoustics D 7 LTD, D7 S manual Feedback

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3 Using your microphone

3.4 Feedback

Fig. 2: Microphone placement for maximum gain before feedback.

The term “feedback” means that part of the sound projected by a speaker is picked up by a microphone, fed back to the ampli- fier, and projected again by the speaker. Above a specific vol- ume or "system gain" setting the sound system will start howl- ing and the sound engineer will desperately dive for the master fader to reduce the volume and stop the howling.

To increase usable gain before feedback, the microphone has a supercardioid polar pattern. It is most sensitive to sounds arriv- ing from in front of it (your voice) while picking up much less of sounds arriving from the sides or rear (from monitor speakers for instance).

To maximize gain before feedback, place the main ("FOH") speakers in front of the microphones (along the front edge of the stage).

If you use monitor speakers, be sure never to point any micro- Refer to fig. 2. phone directly at a monitor or FOH speaker.

Feedback may also be triggered by resonances depending on the acoustics of the room or hall. With resonances at low fre- quencies, proximity effect may cause feedback. In this case, it is often enough to move away from the microphone a little to stop the feedback.

D 7/D 7 S/D 7 LTD

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Contents C a L Inhaltsverzeichnis Sicherheitshinweis/Beschreibung Beschreibung Hinweis AnschlussTromotoren usw. wie eine Antenne aufnehmen können Und ähnlichen Störgeräuschen führenMes mehr zur Geltung kommt AnwendungSiehe Abb RückkopplungBegleitchor ReinigungAufstellung für Begleitduo Nem mit Wasser befeuchteten TuchInnenwindschutz austauschen ReinigungFehlerbehebung Frequenzgang Technische DatenTable of Contents Optional Accessories FeaturesExtra MicroDescription Interfacing Using your microphone Feedback D 7, D 7 S CleaningNever let more than two persons share a micro- phone Allow the internal windscreen to dry overnightReplacing the Internal Windscreen Troubleshooting Transducers patents nos Frequency ResponseAT 403.751, US 6.185.809, DE DK 814.637, FI 814.637, FRSommaire Étui Consigne de sécurité/DescriptionConsigne De sécurité Fournitures OptionnelsDescription Comme une antenne les interférences de champs ma RaccordementSites Position typique du micro ApplicationsRéaction acoustique Voir FigSortez l’écran intérieur du chapeau Nettoyage5Chanteurs d’accompagnement 3Nettoyage de l’écran anti-vent intérieurMettez l’écran de rechange dans le chapeau grillagé Remplacement de l’écran antivent intérieurFaites sécher l’écran Dépannage Charactéristiques techniques Réponse en fréquence Diagramme polairePulizia IndiceAvviso di sicurezza / Descrizione Descrizione Collegamento 3Angolo di incidenza del suono Vedi fig ImpiegoViene esaltata l’acustica dell’ambiente Vedi fig ReazioneNon lasciate mai cantare più di due persone per mi- crofono Pulizia3Pulire l’antisoffio interno Sostituire l’antisoffio interno Togliete l’antisoffio dalla grigliaErrori e rimedi Risposta in frequenza Dati tecniciÍndice Indicaciones de Seguridad Indicaciones de seguridad/DescripciónAccesorios OpcionalesDescripción Dos pueden recoger interferencias de campos magnéti ConexiónUtilización Véase Fig Retroalimentación3Limpiar la pantalla antiviento interior LimpiezaLimpieza Desperfecto Causa posible Remedio Reparación de desperfectosRespuesta de frecuencia Datos técnicosÍndice Aviso de segurança/Descrição Aviso de Segurança Volume De fornecimentoAcessórios OpcionaisDescrição Levar a zumbidos e outros ruídos ConexãoIluminação, motores elétricos, etc. como uma antena 3Ângulo de inci- dência do som Veja fig AplicaçãoForma obtém um som equilibrado e natural Veja fig Realimentação3Limpar o paravento interno LimpezaNunca deixe mais de duas pessoas usar o mesmo mi- crofone Coloque o paravento de reposição na tampa de grade Enrosque a tampa de grade no sentido horário no micro- foneDeixe secar o paravento de reposição Problema Causa possível Como resolver Resolver problemas185.809, DE EspecificaçõesResposta de frequência Notizen Notes Notes Note Notas Notas Notizen Notes Notes Note Notas Notas 02/09/9100 U

D 7 LTD, D7, D7 S specifications

AKG Acoustics, a renowned name in audio technology, has made a significant impact in the world of live sound with its D7 series of vocal microphones, specifically the D7 S, D7, and D 7 LTD models. Each of these microphones boasts distinctive features and advanced technologies aimed at delivering superior sound quality, making them favorites among vocalists and sound engineers alike.

The AKG D7 series is designed to meet the rigorous demands of professional use. At its core, the D7 employs a supercardioid polar pattern, which provides exceptional rejection of background noise and feedback. This characteristic is crucial for live performances, as it ensures that the focus is on the performer’s voice, allowing for clear and precise sound reproduction. The D7's frequency response is tailored to enhance vocal clarity, with a presence boost in the critical mid-frequency range that helps vocals cut through the mix.

One of the standout features of the D7 models is the patented Laminated Microphone Capsule Technology. This technology utilizes multiple layers in capsule construction to create a unique acoustic response. As a result, the D7 delivers a naturally rich sound, capable of maintaining warmth and detail even at high sound pressure levels.

The D7 S variant introduces an added convenience with its integrated on/off switch, providing vocalists with greater control during performances. This handy feature allows artists to easily mute their microphone when not in use, minimizing the risk of unwanted noise.

The D 7 LTD edition is designed with a focus on aesthetic appeal, featuring a striking finish that distinguishes it from the standard models. While maintaining the legendary performance characteristics of the D7, the LTD version is aimed at professionals who appreciate both function and form.

All D7 microphones come encased in durable all-metal housings, ensuring they withstand the wear and tear of frequent use. They also include a robust suspension mount to minimize handling noise, further enhancing the clarity of the audio produced.

In conclusion, the AKG Acoustics D7 series, comprising the D7 S, D7, and D 7 LTD, reflects a commitment to high-quality sound and innovative design. Their combination of advanced microphone technologies, superior build quality, and practical features make them an exceptional choice for professional vocalists seeking to elevate their performance and sound experience in any live setting.
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