{"product_id":"radial-j-4-convertisseur-actif-stereo-157273","title":"J+4 Convertitore stereo attivo","description":"\u003ch3\u003eLa Radial J+4: l'interfaccia stereo dedicata al passaggio dal \"consumer\" al livello pro\u003c\/h3\u003e\u003cp\u003eIn molti setup, la sorgente audio esce in \u003cstrong\u003e-10 dB asimmetrico\u003c\/strong\u003e (computer, smartphone, tablet, lettore CD, uscita DJ, alcune tastiere), mentre la catena di diffusione e registrazione richiede un \u003cstrong\u003elivello linea professionale +4 dB bilanciato\u003c\/strong\u003e. La J+4 è stata progettata proprio per questo anello: \u003cstrong\u003eadattare il livello\u003c\/strong\u003e, \u003cstrong\u003eadattare l'impedenza\u003c\/strong\u003e e \u003cstrong\u003emettere in sicurezza il collegamento\u003c\/strong\u003e per affrontare serenamente una console di missaggio, un'interfaccia studio, un patch di tour o un sistema di diffusione.\u003c\/p\u003e\u003cp\u003eRadial pone qui l'accento sull'affidabilità in condizioni reali: trasporto, montaggio\/smontaggio, vibrazioni, variazioni di alimentazione e ambienti elettricamente \"inquinati\". Il risultato: un'interfaccia stereo orientata al campo, pensata per rimanere semplice da usare offrendo una riproduzione pulita e un \u003cstrong\u003eheadroom\u003c\/strong\u003e confortevole.\u003c\/p\u003e\u003ch3\u003eA chi si rivolge la Radial J+4 e in quali casi usarla?\u003c\/h3\u003e\u003cp\u003eLa Radial J+4 si rivolge a chiunque debba integrare una sorgente stereo \"consumer\" in un ambiente professionale, senza compromessi su silenziosità operativa e stabilità: \u003cstrong\u003eingegneri del suono\u003c\/strong\u003e, fornitori di servizi, studi, tecnici broadcast, registi, ma anche \u003cstrong\u003etastieristi\u003c\/strong\u003e e \u003cstrong\u003eDJs\u003c\/strong\u003e esigenti.\u003c\/p\u003e\u003cp\u003eIn sonorizzazione, è ideale per inviare un \u003cstrong\u003ecomputer\u003c\/strong\u003e (playback, interludi, sigle, video), un \u003cstrong\u003econtroller DJ\u003c\/strong\u003e o una \u003cstrong\u003etastiera stereo\u003c\/strong\u003e alla console mantenendo un collegamento bilanciato adatto a lunghe distanze. In studio, facilita l'integrazione di periferiche e lettori consumer con un livello coerente e una migliore immunità al rumore. In ripresa live e in tour, aiuta a evitare problemi tipici: interferenze di massa, rumore di alimentazione, interferenze e differenze di potenziale tra dispositivi.\u003c\/p\u003e\u003ch3\u003eFunzionalità chiave: adattamento di livello, isolamento e controlli essenziali\u003c\/h3\u003e\u003ch4\u003eDal segnale asimmetrico -10 dB al bilanciato +4 dB, senza complicazioni\u003c\/h4\u003e\u003cp\u003eLa J+4 accetta segnali \u003cstrong\u003easimmetrici ad alta impedenza\u003c\/strong\u003e provenienti da apparecchiature consumer e li converte in \u003cstrong\u003euscita bilanciata a bassa impedenza\u003c\/strong\u003e al \u003cstrong\u003elivello +4 dB\u003c\/strong\u003e, direttamente compatibile con gli ingressi micro\/linea di molti sistemi professionali. Questo riallineamento semplifica il gain staging, migliora la headroom in regia e contribuisce a ottenere un segnale più pulito e stabile.\u003c\/p\u003e\u003ch4\u003eBuffer attivo + trasformatore di isolamento: la combinazione anti \"hum \u0026 buzz\"\u003c\/h4\u003e\u003cp\u003eRadial ha lavorato particolarmente sulla gestione del rumore combinando un \u003cstrong\u003ebuffer di segnale attivo\u003c\/strong\u003e con un \u003cstrong\u003etrasformatore di isolamento\u003c\/strong\u003e. Questa architettura mira a conservare dinamica e chiarezza limitando i problemi classici legati ai loop di massa e alle interferenze, specialmente in presenza di computer o alimentatori switching. Il tutto è accompagnato da un \u003cstrong\u003erapporto segnale\/rumore superiore a 95 dB\u003c\/strong\u003e, utile quando si cerca una resa pulita sia in front-of-house che in registrazione.\u003c\/p\u003e\u003ch4\u003eControlli ridotti all'essenziale per un utilizzo rapido\u003c\/h4\u003e\u003cp\u003eLa J+4 va all'essenziale con comandi realmente utili sul campo: un \u003cstrong\u003econtrollo di livello stereo\u003c\/strong\u003e per regolare l'uscita, un \u003cstrong\u003efiltro passa-alto\u003c\/strong\u003e per pulire le basse frequenze indesiderate a seconda della sorgente (rumori di manipolazione, vibrazioni, rumble), e un \u003cstrong\u003eground lift\u003c\/strong\u003e particolarmente pratico per trattare rapidamente alcune ronzii legati alla massa.\u003c\/p\u003e\u003ch4\u003eConnettività pensata per sorgenti moderne e setup DJ\/keys\u003c\/h4\u003e\u003cp\u003ePer adattarsi agli usi attuali, la sezione ingressi raggruppa diversi formati comuni: \u003cstrong\u003eJack 6.35mm\u003c\/strong\u003e impilati per tastiere e mixer DJ, \u003cstrong\u003eRCA\u003c\/strong\u003e per lettori, e \u003cstrong\u003emini-jack stereo 3.5mm\u003c\/strong\u003e per molte uscite mobili. In uscita, gli \u003cstrong\u003eXLR\u003c\/strong\u003e permettono un collegamento bilanciato robusto verso la console, l'interfaccia o lo snake, facilitando l'integrazione in rack, in studio TV o in regia mobile.\u003c\/p\u003e\u003ch4\u003eUna costruzione pensata per il touring\u003c\/h4\u003e\u003cp\u003eCome indica il suo design, la J+4 è fatta per resistere: \u003cstrong\u003escocca in acciaio\u003c\/strong\u003e, struttura interna e progettazione protettiva attorno alle zone sensibili (potenziometri, interruttori, connettori). Questo approccio aumenta la resistenza agli urti e limita i rischi durante le manovre rapide in concerto, in prestazione o in installazione fissa. La finitura tipo \"pad\" aggiunge un plus in isolamento meccanico ed elettrico per un uso più sereno quotidiano.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifiche tecniche\u003c\/h2\u003e\n\u003cstyle\u003e@media(max-width:632px){table[data-wb-spec]{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr)}table[data-wb-spec] colgroup{display:none}table[data-wb-spec] tbody,table[data-wb-spec] tr{display:contents}table[data-wb-spec] td{display:block;overflow-wrap:anywhere;grid-row:var(--wb-l);background-color:var(--wb-lb)}table[data-wb-spec] td[data-r]{grid-row:var(--wb-r);background-color:var(--wb-rb)}table[data-wb-spec] td[colspan=\"2\"]{grid-column:1\/-1}table[data-wb-spec] td:empty{display:none}}\u003c\/style\u003e\n\u003ctable data-wb-spec style=\"width:100%;table-layout:fixed\"\u003e\n\u003ccolgroup\u003e\u003ccol style=\"width:25%\"\u003e\u003ccol style=\"width:25%\"\u003e\u003ccol style=\"width:25%\"\u003e\u003ccol style=\"width:25%\"\u003e\u003c\/colgroup\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:1;--wb-r:8;--wb-lb:var(--wb-neutral-50);--wb-rb:transparent\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eCategoria\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003elive box\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eTHD\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e0,005% @ 1 kHz\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:transparent;--wb-l:2;--wb-r:9;--wb-lb:transparent;--wb-rb:var(--wb-neutral-50)\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eNumero di canali\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e2\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eIngressi\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e2 x jack, 2 x RCA, minijack stéréo\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:3;--wb-r:10;--wb-lb:var(--wb-neutral-50);--wb-rb:transparent\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eConversione Digitale\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eno\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eUscite analogiche\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e2 x XLR\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:transparent;--wb-l:4;--wb-r:11;--wb-lb:transparent;--wb-rb:var(--wb-neutral-50)\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eLivello di ingresso massimo (dBu)\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e102\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eAlimentazione elettrica\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eDC 15 V\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:5;--wb-r:12;--wb-lb:var(--wb-neutral-50);--wb-rb:transparent\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003ePreamplificatore integrato\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eSi\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eSchermo\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eLED\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:transparent;--wb-l:6;--wb-r:13;--wb-lb:transparent;--wb-rb:var(--wb-neutral-50)\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eImpostazioni\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003elivello di uscita\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003ePeso\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e720 g\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:7;--wb-r:14;--wb-lb:var(--wb-neutral-50);--wb-rb:transparent\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eRisposta di frequenza\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e20 Hz - 20 kHz\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eDimensioni (mm)\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e84 x 127 x 48\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ctable data-wb-spec style=\"width:100%;table-layout:fixed\"\u003e\n\u003ccolgroup\u003e\u003ccol style=\"width:25%\"\u003e\u003ccol style=\"width:25%\"\u003e\u003ccol style=\"width:25%\"\u003e\u003ccol style=\"width:25%\"\u003e\u003c\/colgroup\u003e\n  \u003ctr style=\"background-color:transparent;--wb-l:1;--wb-r:6;--wb-lb:var(--wb-neutral-50);--wb-rb:transparent\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eValvole\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eno\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eRegolazioni\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003elivello di uscita\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:2;--wb-r:7;--wb-lb:transparent;--wb-rb:var(--wb-neutral-50)\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003ePreamp integrato\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003esì\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eVisualizzazione\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eLED\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:transparent;--wb-l:3;--wb-r:8;--wb-lb:var(--wb-neutral-50);--wb-rb:transparent\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eRisposta in frequenza\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e20 Hz - 20 kHz\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eAlimentazione\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eDC 15 V\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:4;--wb-r:9;--wb-lb:transparent;--wb-rb:var(--wb-neutral-50)\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eLivello ingresso max\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e102 dBu\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003ePeso (kg)\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e0,72\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:transparent;--wb-l:5;--wb-r:10;--wb-lb:var(--wb-neutral-50);--wb-rb:transparent\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eUscite\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e2 x XLR\u003c\/td\u003e\u003ctd data-r colspan=\"2\"\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Radial","offers":[{"title":"Default Title","offer_id":54358925934867,"sku":"157273","price":328.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0872\/6803\/files\/e885b1d1a6d94dc70f67257b2df66cadfb8f5a6c_SRA_J_4.png?v=1789325016","url":"https:\/\/woodbrass.it\/products\/radial-j-4-convertitore-stereo-attivo-157273","provider":"Woodbrass.com","version":"1.0","type":"link"}