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Razno pricajte o svemu ostalom vezano za muziku i PC produkciju, predstavite sebe, svoj band, also speak in english about pro audio production...

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Old 11-08-2008, 04:14 PM   #31
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Default Re: Objasnite mi molim vas - Class A

HeatMan, trazio si (molio!?) da ti neko objasni ... paa... neko, odnosno, nekolicina ti je pokusala da objasni... a sad.... ako ti posle svih pokusaja doneses (potpuno) pogresnu konstataciju... sta mi da radimo? Da se povucemo, ili da nastavimo da se "rvemo"?


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p.s. "Negative Feedback" nije "neka druga tehnologija"... nego osnova kompletne elektronike... da negativnu povratnu spregu nisu izmislili do sada, elektronika ne bi postojala, kao ni njeni produkti...
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Old 11-08-2008, 04:25 PM   #32
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Default Re: Objasnite mi molim vas - Class A

Quote:
Originally Posted by dvuckovic View Post
Pa ako ces vec o izoblicenjima u pro audiu, evo ti specifikacija za Teletronix LA2A:

Technical Specifications
Input Impedance 50, 150, 250, 600 ohms
Output Load Impedance 50, 150, 250, 600 ohms
External Connections Jones Barrier terminals and XLR connectors
Frequency Response +0/-1 dB 30 Hz to 15kHz
Gain 40 dB ? 1dB
Input Level +16 dB maximum
Output Level +10 dB nominal, +16 dB maximum
Distortion Less than 0.5% THD (0.25% typical) at ?10 dBm
Noise 70 dB below +10 dBm output level
Attack Time 10 milliseconds
Release Time 0.06 seconds for 50% release; 0.5 to 5 seconds for complete release
Meter dB gain reduction and dB output
Power Requirements 35 watts, 120/240 volts, 50/60 Hz
Environmental Maximum operating temperature 160?F
Dimensions 19" Rackmount chassis, 3U
Weight 13 lbs.




I za 1176:

Input Impedance 600 ohms, bridges-T control (floating)
Output Load Impedance 600 ohms, floating, damping factor 20
External Connections Jones Barrier terminals and XLR connectors
Frequency Response ? 1 dB 20 Hz to 20kHz
Gain 50 dB
Distortion Less than 0.5% total harmonic distortion from 50 Hz to 15 kHz with limiting
Signal to Noise Ratio Greater than 70 dB at +10 dBm
Attack Time 20 microseconds to 800 microseconds
Release Time 50 milliseconds to 1.1 seconds

Obrati paznju na THD i frequency response.

da al behringer, recimo, ima takodje sjebane specifikacije.. "sjebane".. ali one ne prave boju kakvu mi volimo.. nego jednostavno, zvuchi ruzno..
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Old 11-08-2008, 04:26 PM   #33
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Default Re: Objasnite mi molim vas - Class A

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da al behringer, recimo, ima takodje sjebane specifikacije.. "sjebane".. ali one ne prave boju kakvu mi volimo.. nego jednostavno, zvuchi ruzno..
Eeee... vidish... postoji jos "nesto" preko svih specifikacija... i "klasa", ali time necu da te gnjavim...

pozdrav

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Old 11-08-2008, 04:26 PM   #34
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Default Re: Objasnite mi molim vas - Class A

Koji Behringer? Smijem da se kladim da svaki ima bolje specifikacije od 1176
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Old 11-08-2008, 04:29 PM   #35
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Default Re: Objasnite mi molim vas - Class A

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na osnovu skica koje sam video na onom linku koji si mi dao.. sa wikipedie... loshe ste skapirali mene.. ok kapiram shta hocesh reci, ALI ja nigde nisam rekao da AB nije dobar.. rekao sam da predpojachala klasa od B pa na dalje, ne vredi koristiti u pro audio tehnici chisto zbog izoblichenog izlaza iz preampa.. to je jedino shto sam hteo reci, a vi bi da me rastrgnete sad na komade..
A sta mislis... da li bi bilo pametno motore koji pokrecu fadere na mikseru goniti pojacavacima u klasi A? A ventilatore za hladjenje?

pozdrav

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Old 11-08-2008, 04:35 PM   #36
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Default Re: Objasnite mi molim vas - Class A

Apsolutno te niko ne rastrze na komade, nego si zasao u oblast audio inzinjeringa u kojoj specifikacije nisu dovoljne. Kad bi se sprave pravile tako sto se uzmu na papiru najbolje komponente, bilo bi veoma lako napraviti uredjaje koji se svima svidjaju... Medjutim, nijedan ozbiljan uredjaj nije napravljen bez slusnih testova, a oni koji su postali "legendarni" su postali tako sto je mnogo ljudi reklo za njih da zvuce dobro, i nastavilo da ih kupuje. Bez obzira u kojoj klasi rade, i kolika su im izoblicenja. Jbg, tako je.
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Old 11-08-2008, 04:37 PM   #37
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Default Re: Objasnite mi molim vas - Class A

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Apsolutno te niko ne rastrze na komade, nego si zasao u oblast audio inzinjeringa u kojoj specifikacije nisu dovoljne. Kad bi se sprave pravile tako sto se uzmu na papiru najbolje komponente, bilo bi veoma lako napraviti uredjaje koji se svima svidjaju... Medjutim, nijedan ozbiljan uredjaj nije napravljen bez slusnih testova, a oni koji su postali "legendarni" su postali tako sto je mnogo ljudi reklo za njih da zvuce dobro, i nastavilo da ih kupuje. Bez obzira u kojoj klasi rade, i kolika su im izoblicenja. Jbg, tako je.

A obaska postoji i navika klijenata na efekte tih sprava... cesto nisu namerno "kvarene", nego nisu MOGLE biti bolje napravljene... tako su mnoge postale de-facto standard odnosno navika klijenata/kupaca muzike koja se producira.

LA2A je napravljen da svira najbolje sto moze ( u vreme kada je konstruisan), i sumnjam da mu je iko namerno smanjivao gornju granicnu frekvenciju

pozdrav

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Old 11-08-2008, 04:40 PM   #38
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Default Re: Objasnite mi molim vas - Class A

Pa, eto, kad smo vec pominjali 1176, JAAAAKO je tesko naci 2 komada koji isto zvuce. Takva su bila tehnicka i proizvodna ogranicenja tih godina, mislim da je najblize poredjenje sa Fender gitarama
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Old 11-08-2008, 04:45 PM   #39
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Default Re: Objasnite mi molim vas - Class A

A evo i specifikacija za Neve 1081:

Legendary Neve microphone preamp and equaliser design (Class A)
Hand-built and wired precisely to original 1972 specifications
5 switchable EQ bands
HP and LP selectable filters (18dB per octave)
Separate 48V phantom power supply
Solo button selects channel unbalanced output
Neve-designed hand-wound transformers
Both inputs transformer-balanced and earth free
crophone Input: Gain +80db to +10dB in 5dB steps
Line Input: Gain +20dB to -10dB in 5dB steps
Output: Maximum output >+26dBu into 600 ohms; Output impedance 75ohms @1kHz
Distortion: Not more than 0.07% at +20dBu output
Freq Response: +/-0.5dB 20Hz to 20kHz, -3dB at 45kHz. EQ Out.
Output noise better than -80 dB at all line levels
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Old 13-08-2008, 12:11 AM   #40
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Default Re: Objasnite mi molim vas - Class A

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mislim da je najblize poredjenje sa Fender gitarama
Ne znam samo kako stoji 1176 u tom smislu... nadam se ne kao Fender, jer nazalost, Fender nikada ne bih smeo da kupim iz katologa. Tu nije fora da su samo medjusobno razlichiti, nego hmmmmm... znam da zvuci kao prejaka rech, ali su mnogi krshine... nov, lep, original, a zvuk... hmmmm... sumnjiv...
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