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Òåìà: audiofire 4 íåáàëàíñíûå âûõîäû!!!
Âðåìÿ: 23.03.2011 11:45 |
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Ìîñêâà Çâóêîðåæèññ¸ð. 
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Ýòî íå êîíåö ñâåòà, íî âñ¸-æå. Ïðîâåðèë âûõîäû íà áàëàíñ-íå áàëàíñ, âñå ÷åòûðå âûõîäà îêàçàëèñü íå áàëàíñíûìè. Íå ìîã æå ÿ ìèêðóõè íà âñåõ ÷åòûð¸õ âûõîäàõ îïàëèòü. Îãðîìíàÿ ïðîñüáà, êîëëåãè ñäåëàéòå ïðîâåðêó ñâîèõ äåâàéñîâ è îòïèøèòåñü. brukva2004@ya.ru P.S. Ñàìûé ïðîñòîé ñïîñîá ïðîâåðêè âçÿòü ñòåðåî íàóøíèêè ñ áîëüøèì ñòåðåî-äæåêîì è ïîñëûøàòü ñèãíàë íà âñåõ ëèíåéíûõ âûõîäàõ. Ñèãíàë äîëæåí áûòü â îáîèõ óøàõ, ïðàâäà èíâåðòíûé, íî ýòî íåî÷åíü çàìåòíî. Ñïàñèáî îòêëèêíóâøèõñÿ !!! |
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| Àâòîð |
Òåìà: Re: audiofire 4 íåáàëàíñíûå âûõîäû!!!
Âðåìÿ: 23.03.2011 18:47 |
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Allen & Heath, Mackie, Fender, Sennheiser, AKG, Tascam, TC, DBX 
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Íåà - â 80% ñëó÷àåâ òàêàÿ ïðîâåðêà äàñò òóïîé ìîíî ñèãíàë â îäíîì óõå. Ïðîâåðèòü ìîæíî ìóëüòèìåòðîì. Ñàìîå ïðîñòîå - óáåäèòñÿ ÷òî íåòó ëèíêà ìåæäó ýêðàíîì è õîëîäíûì. | |
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| Àâòîð |
Òåìà: Re: audiofire 4 íåáàëàíñíûå âûõîäû!!!
Âðåìÿ: 23.03.2011 23:42 |
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Ìîñêâà Çâóêîðåæèññ¸ð.
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YurikRecords - ïðèíöèï áàëàíñíîãî ñèãíàëà ñîâåòóþ ïîó÷èòü, à òî ìîæåøü ïîïàñòü â ïðîñàê , êàê â äàííîì ñëó÷àå. Áàëàíñíûé ñèãíàë äàåò îò çåìëè íà õîëîäíûé è ãîðÿ÷èé äâà îäèíàêîâûõ ñèãíàëà , òîëüêî â ïðîòèâîôàçå. Êîëåãè íó êîïåòåíòíûå çäåñü íàéäóòñÿ? |
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Òåìà: Re: audiofire 4 íåáàëàíñíûå âûõîäû!!!
Âðåìÿ: 24.03.2011 03:16 |
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Allen & Heath, Mackie, Fender, Sennheiser, AKG, Tascam, TC, DBX
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BabyToys Record , ðàäè òàêîãî ñëó÷àÿ, êîëëåãà, äàæå âîñïîëüçîâàëñÿ ïîèñêîì ÷òîáû íàéòè ñâî¸ æå ñîîáùåíèå: À âîò âàì, êîëëåãà, óæå ñëåäóåò çíàòü ÷òî íà âûõîäàõ ïîäîáíûõ óñòðîéñòâ èñïîëüçóåòñÿ íå êëàññè÷åñêàÿ ñõåìà ñèììåòðèè ñ ôàçèíâåðòîðîì, à èìïåäàíñíàÿ ñ çåìë¸é ÷åðåç ðåçèñòîð! |
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Òåìà: Re: audiofire 4 íåáàëàíñíûå âûõîäû!!!
Âðåìÿ: 24.03.2011 10:08 |
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Ìîñêâà Çâóêîðåæèññ¸ð.
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YurikRecords ß ïðîòåñòèðîâàë áàëàíñíûå âûõîäà íà ìîòó íà ì-àóäèî, íà ïóëüòàõ. Íà âñ¸ì îáîðóäîâàíèå ñèãíàë åñòü ãàðÿ÷èé-çåìëÿ õîëîäíûé-çåìëÿ, íî â audiofire 4, ñóäÿ ïî ìóëüòèìåòðó , õîëîäíûé âèñèò íà çåìëå. | |
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Òåìà: Re: audiofire 4 íåáàëàíñíûå âûõîäû!!!
Âðåìÿ: 24.03.2011 11:50 |
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Allen & Heath, Mackie, Fender, Sennheiser, AKG, Tascam, TC, DBX
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> íî â audiofire 4, ñóäÿ ïî ìóëüòèìåòðó , õîëîäíûé âèñèò íà çåìëå. Ïîâòîðþñü:  èìïåäàíñíîì ïîäêëþ÷åíèè íà õîëîäíîì âåñèò çåìëÿ ïðîïóùåííàÿ ÷åðåç ðåçèñòîð. Ïðè ýòîì ñ Advanced Multi-Bit êîòîðûé èñïîëüçóåòñÿ â ÖÀÏ âàøåé êàðòû, íå âèæó ñìûñëà çàìàðà÷èâàòüñÿ ñ ñèììåòðèåé âîîáùå. À òåïåðü ÷òîáû âû íå ìó÷èëè òåñòåð èç ìàíóàëîâ âàøåé êàðòû: An “impedance” balanced output provides most of the benefits of a differentially balanced output at a lower cost. In this case only the plus component actually carries the signal. The minus component is tied to ground through a resistor so that the output impedance matches that of the plus component. Since the impedances are matched, any noise added to the minus component will still be approximately the same as that picked up by the plus component and will be subtracted out by the input amplifier. Your Echo product uses this type of output ×òî è òðåáîâàëîñü äîêàçàòü... 
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Òåìà: Re: audiofire 4 íåáàëàíñíûå âûõîäû!!!
Âðåìÿ: 29.03.2011 14:25 |
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Ìîñêâà Çâóêîðåæèññ¸ð.
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Òåìà: Re: audiofire 4 íåáàëàíñíûå âûõîäû!!!
Âðåìÿ: 30.03.2011 15:55 |
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Allen & Heath, Mackie, Fender, Sennheiser, AKG, Tascam, TC, DBX
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BabyToys Record , åù¸ ðàç - â âàøåé êàðòå ïîëíîöåííûé áàëàíñ òîëüêî íà âõîäå, íà âûõîäå èìïåäàíñíîå èëè ïñåâäî áàëàíñíîå ïîäêëþ÷åíèå - íà ìèíóñå òóïî âèñèò çåìëÿ ÷åðåç ðåçèñòîð, ÷òî êñòàòè íàïèñàíî â ìàíóàëå ê âàøåé êàðòå. Òåïåðü ïîäóìàéòå, êàêèì îáðàçîì âû ìîæåòå óñëûøàòü ÷òî ëèáî â äðóãîì óõå? | |
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Òåìà: Re: audiofire 4 íåáàëàíñíûå âûõîäû!!!
Âðåìÿ: 30.03.2011 16:01 |
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Allen & Heath, Mackie, Fender, Sennheiser, AKG, Tascam, TC, DBX
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Impedance balanced Òàêæå êàê â ñëó÷àå MG10/2, âûõîäû ìèêøåðà Yamaha MW10 âûïîëíåíû ïî ñõåìå impedance balanced. Ýòî ÷àñòî âñòðå÷àþùèéñÿ â ïðîôåññèîíàëüíîé àïïàðàòóðå ýêîíîìè÷íûé âàðèàíò áàëàíñíîãî ñîåäèíåíèÿ, âíåäðåíèå êîòîðîãî ïðèïèñûâàþò èíæåíåðàì Mackie Desings. Ïðè impedance balanced âìåñòî âûâîäà èíâåðòèðîâàííîãî ñèãíàëà íà cold, ýòîò âòîðîé âûõîä çàêîðà÷èâàåòñÿ íà çåìëþ ÷åðåç ðåçèñòîð 75 Îì. Òàê êàê ðàçäåëåíèå ñèãíàëîâ hot è cold ïðîèñõîäèò â èñòî÷íèêå, íà ïðèåìíîé áàëàíñíîé ñòîðîíå ïîìåõè áóäóò îòñå÷åíû. Óðîâåíü ñèãíàëà ñ÷èòàåòñÿ ïî ôîðìóëå (U+z) - (-0+z) = U+0 = U. Ïðè ïîëíîöåííîì áàëàíñíîì âûõîäå óðîâåíü ñèãíàëà ñîñòàâèë áû U-(-U) = 2U.  ñëó÷àå æå impedance balanced, óðîâåíü áóäåò íà 6 äÁ íèæå. Ïðè íåáàëàíñíîì ïîäêëþ÷åíèè íèêàêèõ ïðîáëåì íå âîçíèêàåò. Ìîæíî èñïîëüçîâàòü êàê ìîíîäæåê, òàê è ñòåðåîäæåê ñ íåçàäåéñòâîâàííûì ring êîíòàêòîì. |
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