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Avalon Acoustics AVALON INDRA manuale d’uso - BKManuals

Avalon Acoustics AVALON INDRA manuale d’uso

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Un buon manuale d’uso

Le regole impongono al rivenditore l'obbligo di fornire all'acquirente, insieme alle merci, il manuale d’uso Avalon Acoustics AVALON INDRA. La mancanza del manuale d’uso o le informazioni errate fornite al consumatore sono la base di una denuncia in caso di inosservanza del dispositivo con il contratto. Secondo la legge, l’inclusione del manuale d’uso in una forma diversa da quella cartacea è permessa, che viene spesso utilizzato recentemente, includendo una forma grafica o elettronica Avalon Acoustics AVALON INDRA o video didattici per gli utenti. La condizione è il suo carattere leggibile e comprensibile.

Che cosa è il manuale d’uso?

La parola deriva dal latino "instructio", cioè organizzare. Così, il manuale d’uso Avalon Acoustics AVALON INDRA descrive le fasi del procedimento. Lo scopo del manuale d’uso è istruire, facilitare lo avviamento, l'uso di attrezzature o l’esecuzione di determinate azioni. Il manuale è una raccolta di informazioni sull'oggetto/servizio, un suggerimento.

Purtroppo, pochi utenti prendono il tempo di leggere il manuale d’uso, e un buono manuale non solo permette di conoscere una serie di funzionalità aggiuntive del dispositivo acquistato, ma anche evitare la maggioranza dei guasti.

Quindi cosa dovrebbe contenere il manuale perfetto?

Innanzitutto, il manuale d’uso Avalon Acoustics AVALON INDRA dovrebbe contenere:
- informazioni sui dati tecnici del dispositivo Avalon Acoustics AVALON INDRA
- nome del fabbricante e anno di fabbricazione Avalon Acoustics AVALON INDRA
- istruzioni per l'uso, la regolazione e la manutenzione delle attrezzature Avalon Acoustics AVALON INDRA
- segnaletica di sicurezza e certificati che confermano la conformità con le norme pertinenti

Perché non leggiamo i manuali d’uso?

Generalmente questo è dovuto alla mancanza di tempo e certezza per quanto riguarda la funzionalità specifica delle attrezzature acquistate. Purtroppo, la connessione e l’avvio Avalon Acoustics AVALON INDRA non sono sufficienti. Questo manuale contiene una serie di linee guida per funzionalità specifiche, la sicurezza, metodi di manutenzione (anche i mezzi che dovrebbero essere usati), eventuali difetti Avalon Acoustics AVALON INDRA e modi per risolvere i problemi più comuni durante l'uso. Infine, il manuale contiene le coordinate del servizio Avalon Acoustics in assenza dell'efficacia delle soluzioni proposte. Attualmente, i manuali d’uso sotto forma di animazioni interessanti e video didattici che sono migliori che la brochure suscitano un interesse considerevole. Questo tipo di manuale permette all'utente di visualizzare tutto il video didattico senza saltare le specifiche e complicate descrizioni tecniche Avalon Acoustics AVALON INDRA, come nel caso della versione cartacea.

Perché leggere il manuale d’uso?

Prima di tutto, contiene la risposta sulla struttura, le possibilità del dispositivo Avalon Acoustics AVALON INDRA, l'uso di vari accessori ed una serie di informazioni per sfruttare totalmente tutte le caratteristiche e servizi.

Dopo l'acquisto di successo di attrezzature/dispositivo, prendere un momento per familiarizzare con tutte le parti del manuale d'uso Avalon Acoustics AVALON INDRA. Attualmente, sono preparati con cura e tradotti per essere comprensibili non solo per gli utenti, ma per svolgere la loro funzione di base di informazioni e di aiuto.

Sommario del manuale d’uso

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    S ERIAL N UM BERS : ________________ H A NDCRAFTED B Y : ____________ ___________ ____ ____________ ___________ ____ ____________ ___________ ____ ____________ ___________ _____ INDRA R D ESIGNED BY N EIL P ATEL FOR A V A LON A COUSTICS This product is cert ified to meet t he requirements of the European Union (EU) Electromagnet ic Compatibility (E[...]

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    Table of Contents 1 Introduction ............................................................................................................................ 4 2 Unpacking Instr uctions .......................................................................................................... 5 Introduction ..........................................[...]

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    9 Accuracy of Bas s Reproduction .......................................................................................... 33 Introduction .......................................................................................................... 33 9.1 Sensitivit y to Time-Relat ed Informati on .....................................................[...]

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    4 1 Introduction Congratulations on your purchase of A V ALON INDRA , one of the most technologica lly advanced high -energy t ransducers ever creat ed. I NDRA represents t he c ulminat ion of 20 years of researc h an d developme nt in the areas of tra nsient response, bandw idth, noise fl oor and octave - to -octave energy balance. The result sets[...]

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    5 2 Unpacking Instructions Introduction Your A VALON A CO USTICS loudspea kers w ere shipped in a heavy-duty crate to ensure their safe arriva l. It is rec ommended to save these c rates for p ossibl e future use. D ue t o t he w eight of the speakers, it will require two persons t o un -crat e t hem an d position t hem for listeni ng. Please arran[...]

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    6 2.1 Opening the Crate The crat e fea tures a on e- piece top assembly w hich is fast ened to t he crate bottom with screw s around the lower perimeter. T o u npack, remove the screws and lift the upper portion of t he crate straight up (this will require two people). Next, slide ea ch speake r part way off of t he cra te base so t hat th e plasti[...]

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    7 2.2 Installing the Grilles The grille asse mblies are behind a p anel on th e outside of the speaker cr ate. Remove the screws securing the panel, and then c arefully pull the grilles straight out. The grilles are insta lled w ith friction fast ene rs and press into place on the speaker ca binets. Please see Figur e 2.2. Orientation of the F elt [...]

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    8 2.3 Replacing Grille Pins The grille pins installed on the grille assemblies are fragi le an d can be easily damaged. Should any of the pin s brea k, you may replace them using t he following procedure . 1. Place the grille assembly face -dow n on a padded surface (a towel or carpetin g). 2. Remove the da maged gri lle pin by pull ing it straight[...]

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    9 4. Carefully pull t he grille cloth away from the frame mounting hole. T he mounting hole must be clear of all obst acles durin g pin inst allation. 5. Place t he exposed end of th e grille pin in the open mount ing hole. Check to insure that th e grille cloth is not trap ped between the pin and frame. Use a small hammer and gently t ap the new g[...]

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    10 3 Wiring Instructions Introduction The cross over is housed in a sealed, non -accessib le chamber in the b ottom of the speak er cabinet, to minimize t he effect of vibration on t he component s. The I NDRA is eq uipped w ith h igh -quality binding post for connect ing t he speaker cables. Spade lugs are r ecommended f or al l cable termi nation[...]

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    11 4 Break-in Period Your new A VALON A C OUSTICS loudspeakers have an i niti al break-in period. They will not perform to their full sonic pot ential when first i nstalled in your system. This i s pa rtially due to a residual polarization of the diel ectric materials used in the crossover capaci tors and internal wiring. 1 As music is pl ayed thro[...]

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    12 5 Maximizing Performance These details are imperative to obta ining optim um r esults from your A VALON A COUSTICS loudspeakers. Break- in The break -in period is critical to ma ximizing sonic performan ce and should take place before other adjustmen ts (see the discus sion on page 11 ). The break-in should begi n w ith t hree t o six hours of q[...]

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    13 Toe- In Adjusting the toe -in angle of t he spea kers i s use ful in tailoring the sound to best mat ch the characteristic s of your system and li stening room. When the speakers are fac ing straight forward, t hey t end t o crea te a la rge, expansive so und-st age, pai nted w ith broad b rush strokes. As they are rot ated toward the listening [...]

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    14 First Reflection Points Since the ear/brain system tends to integrat e t he sounds arrivi ng within a 10 millisecond time w indow, i t is important to control th e early reflec tions arr ivi ng from t he sidewal ls to th e list ening position. A hard -surfaced w all can produce a strong frequency-de pendent reflection that can interfere with the[...]

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    15 6 Care of Your Loudspeakers Cabinet (Hardwood Finis h) A VALON A COUSTICS ’ hardwood finished loudspeakers a re suppl ied with a special polish and tw o lint -free polishing c loths, in order to p roperly c are for the h igh qualit y furniture l acquer. The followi ng polishi ng in structions should be observed: IMPORTANT: Use the supplied fur[...]

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    16 7 Warranty Your A VALON A COUSTICS loudspeakers are warra nted to the original, registered purchaser agai nst defec ts in workma nship an d mat erials for a period of three years from the date of first purchase, pro vided th at the enclosed registration card is returned to th e factory within seven days of the purchase date. If the registration [...]

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    17 Warranty Statement 1. A V A LON A C OUSTICS warran ts th e materi als, workma nship, a nd p roper functioning of thi s product for a period of t hree years to t he origi nal regi stered purchaser, provided th at the completed registration card is returned to A VALON A COUSTICS within seven days of the date of purchase. If the regis tration card [...]

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    18 6. The above w arrant y is the sole warrant y given by A VALON A COUSTICS , and is in lieu of all other wa rranties. All implied warranti es, including warranties of merchanta bility or fitness for an y particular purpose shall be st rictly limited i n duration t o t hree years from the date of ship ment from the factory, and upon the exp iratio[...]

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    19 8 R o o m A c o u s t i c s a n d S p e a k e r P o s i t i o n Introduction The listenin g room forms t he fina l link of t he playback system , as import ant as any oth er c omponent in the chain. Just as an oth erwise su p erb system is handicapp ed by a n inferi or pre -ampl ifier (for example) , so c an a well-mat ched system be hi ndered b[...]

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    20 An Optical Analogy Let us use a visual ana logy to aid our underst andi ng of acoustic s. I magine that you are in a room that is lit only by a candle in its center. There is (approximately) a uniform amount of light cast in all direc tions. I f a large mirror is h eld closely t o candle, one ha lf of t he room bec omes darkened, while the other[...]

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    21 8.1 Standing Waves The paral lel surfaces of most list ening rooms c an lead t o a pot ential probl em in the low frequencies. A sound wave ca n be repeatedly reflect ed from opposing surfaces, back an d forth. If t he dist ance betw een t he surfaces i s an integra l mult iple of one-half the sound wa velength, a stan ding wave will be set up. [...]

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    22 8.2 Flutter Echo These paral lel, r eflective surfaces can also produce a different audible problem. I f there is little absorption at higher frequencies, a musical transient containin g high frequencies, such as a h and clap or t he strike of a percussion instrument, ca n be heard bouncing repea tedly bet ween the surfaces. Cal led flutter ec h[...]

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    23 8.3 Early Reflections Another sit uation t hat c an reduce t he subject ive qualit y of reprod uced s ound is the presence of early reflections. By earl y reflect ions, we are referri ng to reflected sound w aves that reach the list ener w ithin 10 t o 20 milliseconds of the direct signa l from the loudspeaker. When a reflec ted sound reac hes t[...]

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    24 Avoiding Early Reflecti ons The speed of sound is approximat ely one foot (30 cm) per mi llisecond. Therefore, t o preserve the natural soundstage on your recordings, t here should be no reflected sounds arriving at the listening position with a path length less than t en feet (3 meters) l onger than the direct path from speak er to list ener (s[...]

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    25 Since the floor i s wit hin 5 feet of the speak er, it is b est to have a carpeted fl oo r to absorb fl oor reflect ions. A thic k, dense carpet and pad will absorb l ower frequencies m ore eff ectively t han a thin one. Due to thei r compl ex structure , carpets an d pads of na tural ma terials, such a s w ool and jute, will exhibit a more unif[...]

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    26 8.4 Bass reinforcement By ba ss reinforcement , we mean the effect of the room boundarie s on the propagation of sound . It is wi dely kn own t hat speaker placement relative to the floor a nd wall s can a ffect the relative amount of bass that the system produces. To make this i nteraction more clear, let us refer t o th e opti cal analogy of t[...]

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    27 By pr operly selec ting the distanc es t o ea ch surfa ce, we can extend the in - room bass response of the speaker m uch deeper than its anechoic response. Please see Fig ure 8.5. This is bec ause the bass rein forcement p rovides a b oost which i s complement ary to t he bass roll -off t hat w ould be present in an anechoic chamb er. Figure 8 [...]

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    28 Conversely, improper p lacement of the loudspeakers can re sult in une ven frequency response . This results in diminished bass qualit y. Please refer t o Figure 8.6. As fr equenc y increases and wavelen gth becomes more similar to the distance t o the boundary, the phase difference bet ween origi nal and reflected wa ves in creases, a nd the ai[...]

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    29 There are t ypically three reflective surfaces near each speaker: t he floor, t he rear wall, and the side w all. Eac h of these surfaces prod uces its ow n reflection, a nd h ence i ts own cancellation and reinforcement . By prope rly selecting the dist ances t o each surface, we can provide a uniform a nd extended bass response. C onversely, i[...]

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    30 8.5 Summary of Recommendations Now that we have l ooked at some of the common probl ems o f listenin g rooms, as well as their cures, let us summarize our findin gs and recommendations . Flutter Echo and Standing Waves These sit uations are t he result of the r oom having p arallel, reflec tive surfaces. The potent ial probl ems are independent [...]

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    31 Speaker Placement Although yo ur A VALON A COUST I CS l oudspeakers may be p laced i n a wide variety of positi ons rel ative to t he walls of the ro om, it is sti ll wise to experiment a bit to achieve optimal results. The suggest ed minimum distan ces for the INDRA are 3 feet from one w all (side or rear), a nd 5 feet from t he other (all dist[...]

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    32 8.6 A Listening Room Example In order to make t hese points more clear, an example of a r oom layout is given in Figure 8 .9, illustrat ing the prin ciples we have given. Figure 8.9 - Example l istening room. The area around the spea kers is free o f objects that would produce earl y refl ect ions. A tapestry is hung opposite t he draperi es to [...]

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    33 9 Accuracy of Bass Reproduction Introduction We have all ha d the experienc e of list ening to speakers w ith poor bass quality. Perhaps th e ba ss w as muddy, or ill-defi ned. Possibly the b ass was exaggerated or bloat ed. In any ca se, t hese type of distortions are dist racting and can keep us fr om enjoying th e full measure of the performe[...]

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    34 9.1 Sensitivity to Time-Related Information It is w idely know n that the h uman ear/brai n system is ext remely sensit ive to time-rel ated distortions. Thi s can be understood when one rea lizes that directional a nd spatial information is provided by in ter - aural ti me (and phase) differences. During th e period of man's evoluti on, t [...]

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    35 9.2 Rationale There i s an old saying, "There's no such thin g a s a free l unch." There are many trade-offs in speaker design, as i n almost a ny area one can think of. In thi s case, t he t rade off is between t ransient response and anechoic frequency response (the speaker 's freq uency response in a n anech oic chamber). [...]

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    36 9.3 Measurements of Audio Equipment It should be recognized th at measurement s are not th e f inal a rbiter of sound quality of audio comp onents. Often times a measurement standa rd h as evolved because i t is easil y perf ormed, or bec ause it is easily rep eatable, or it has shown some lin k to c ertain audible characteristi cs. Unqu estiona[...]

  • Pagina 37

    37 Loudspeaker Measur ements Returning to loudspeakers, a sim ilar situation has developed. Although nobody listens t o music in an a nechoic chamber, l oudspeaker mea surement s are commonly perfor med in th em. 3 A lthough vari ous proposals have been made for performing low frequency measuremen ts in a more real istic setting, there has been no [...]

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    38 Designing for Accur ate Bass Rep roduction How, then, d oes one arrive at the goal of a loudspea ker th at provides t onal accuracy in the listeni ng room? The a nswer, in large part , comes in t he form of t he digital comput er. It is possible to c reate a mat hematical model of a listening room, a nd predi ct the response of a gi ven speaker [...]

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    39 9.4 Listening Qualities We have seen how many speaker systems store resonant bass energy , resulting in ringing and poor transient accuracy. Now we w ill turn our attention to the listening experienc e, and des cribe how these measurab le properties correlat e with our subjecti ve impressions. There are two main fac tors whi ch affect subject iv[...]

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    40 Transient Response E ffects A spea ker with poor t ransient response will st ore energy , releasin g it after t he initial musical transient has pa ssed. This cau ses a l oss of detai l and obscur es important musica l informati on. A lso associat ed with poor transient response i s a narrow- band resonance, whic h can empha size specific notes.[...]

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    41 9.4 Conclusion Most loudspeakers have been designed to perf orm well in th e frequency domain when mea sured in an anechoic test chamber. W e h ave seen how this desi gn pa radigm p roduces audibl e bass di stortion and exa ggeration. While these exaggerat ions may sometimes seem impressive in th e short term, they quickly p rove to be distracti[...]

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    42 10 Features  Advanced ultra-light weight ceramic and Nomex/Kevla r driver di aphragm material s minimize energy storage a nd time -domain distortion.  Each driver in dividually tested and m atched for op timum performance .  Smooth, wide polar resp onse for superl ative ima ging capab ilities.  Non -react ive, fully da mped impeda nc[...]

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    43 11 Specifications Driver Complement ( 1) 1 ” Concave Ceramic NeoDymium Tw eeter (1) 3 .5 ” Concave Ceramic Do me Midra nge (2) 7 " Nomex Kevlar Comp osite Cone W oofers Sensitivity 87 dB Impedance 4 ohms nominal Frequency Response 28 Hz t o 25kHz Recommended Power 50 to 200 w atts Wiring Methods 2 Position Binding Post Dimensions 41&quo[...]

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    44 12 Notes[...]