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Old 14-10-2011, 08:33 PM   #11
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Default Re: fast track pro - slabiji zvuk nego sa analogne miksete

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Old 14-10-2011, 09:22 PM   #12
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Default Re: fast track pro - slabiji zvuk nego sa analogne miksete

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Danas sam uzeo pomenuti interfejs. povezem na usb pa balansiranim kablovima na alesis active m1mk2 i pustim nekoliko numera, medjuim signal je mnogo slabiji i mutniji nego sa dosadasnje stare 8kanalne analogne miksete MMX 122 stage line.
kako je to moguce? je l nesto ne stima? sto je signal tako slab?
Signal je inace slab, a to sam ustanovio prostom komparacijom sa RME Fireface 400, a i secam se rada, i jacine izlaznog signala na istom paru kutija kao i sad, na Delti 1010. Ne znam razlog zasto je to tako, ali to moze da se resi pojacavanjem volumena ili reduktora gain-a na nekim modelima kutija. Ovo mutnije, se ne da primetiti u tolikim razmerama da je jako osetno ni u poredjenju sa Fireface-om podrazumevajuci onu neizbeznu razliku koja je uslovljena klasom i cenovnim rang-om te dve sprave. Moguce da je to nekakav defekt sa spravom ili u povezivanju itd.
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Old 14-10-2011, 09:52 PM   #13
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Default Re: fast track pro - slabiji zvuk nego sa analogne miksete

http://en.wikipedia.org/wiki/DBFS#Analog_levels pa sve je to ok, ali ne moze digitalni signal da bude slabiji 4 puta, bez obzira na D/A konvertere i SNR.

Last edited by jaybox; 14-10-2011 at 09:54 PM.
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Old 14-10-2011, 10:01 PM   #14
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Default Re: fast track pro - slabiji zvuk nego sa analogne miksete

Rijesices volume problem vec.. Ali.. Vec sam jednom pominjao..


Dakle imam i dalje kod sebe M-audio fast track pro koji je odavno posudjen i sluzio mi je jednom (i samo jednom) kao mobilna varijanta sa laptopom..


Ne znam da li je ovaj konkretno kod mene neispravan, a ne vjerujem da jeste jer svira i snima... ALI!!! Zvuci kao kanta! Znaci kao da sam stavio cepove u usi naspram rme-ja (skoro pa bukvalno).
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Old 14-10-2011, 10:06 PM   #15
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Default Re: fast track pro - slabiji zvuk nego sa analogne miksete

ma dobro ok ako poredite sa rme, ali da je slabiji signal od stare analogne miksete koja sad ne vredi ni 50eur.. ?!
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Old 14-10-2011, 10:17 PM   #16
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Default Re: fast track pro - slabiji zvuk nego sa analogne miksete

Ajd objasni kako je spojeno to sve (karta,monitori,mixer) i kako uporedjujes jacinu sa mixera i kartice..
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Old 14-10-2011, 10:27 PM   #17
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Default Re: fast track pro - slabiji zvuk nego sa analogne miksete

Takođe proveri da li je izlaz iz kartice +4dBm ili -10dBV. Kao i da li je izlaz iz miksete +4dBm ili -10dBV. Sve ti pi?e u Manualima tih sprava. A pomenute vrednosti imaju itekako veze sa jačinom signala.

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Old 14-10-2011, 10:34 PM   #18
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Default Re: fast track pro - slabiji zvuk nego sa analogne miksete

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Takođe proveri da li je izlaz iz kartice +4dBm ili -10dBV. Kao i da li je izlaz iz miksete +4dBm ili -10dBV. Sve ti piše u Manualima tih sprava. A pomenute vrednosti imaju itekako veze sa jačinom signala.
ok dobar savet sad cu nadjem manuals.

setup je:
1. stara mikseta: line out iz laptopa na line in na mikseti, i sa miksete balanced out na monitore (alesis m1mk2).
2. fast track pro: usb na laptop, a balanced out trs na monitore.
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Old 14-10-2011, 10:43 PM   #19
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Default Re: fast track pro - slabiji zvuk nego sa analogne miksete

fast track pro:
Output Impedance 150 Ohms unbalanced, 300 Ohms balanced
Maximum Output Level +1.8dBV, unbalanced, +10.1dBu, balanced
Channel-to-Channel Crosstalk < -108dB
SNR -103dB, A-weighted
Dynamic Range 103dB, A-weighted
THD+N 0.005% (-86dB) @ -1dBFS, 1kHz
manual

IMG Stage line MMX-122
Outputs
1 x Master, stereo: . . . . . . 1 V/600 Ω
1 x Tape Out, stereo: . . . . . 500 mV/10 kΩ
2 x Aux Send, mono: . . . . . 750 mV/300 Ω
1 x Headphones, stereo: . . ≥ 8 Ω
Inserts
4 x Inserts: . . . . . . . . . . . . 30 mV/6 kΩ
General Information
Frequency range: . . . . . . . . . 20-30 000 Hz
THD: . . . . . . . . . . . . . . . . . . . 0.1 %
S/N ratio: . . . . . . . . . . . . . . . 70 dB
Frequency Response 20Hz to 20kHz, +/- 0.3dB @ 48kHz sample rate
20Hz to 40kHz, +/- 0.5dB @ 96kHz sample rate
manual

Last edited by jaybox; 14-10-2011 at 10:52 PM.
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Old 15-10-2011, 06:06 PM   #20
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Default Re: fast track pro - slabiji zvuk nego sa analogne miksete

ima li jos neko ideju,resenje?
ne mogu da verujem da je tolika krsina ovaj uredjaj. evo sad proveravam opet i nema sta, cuje se slabije jedno 4 puta kad je sve na max na oba uredjaja i zvuk je za nijansu zamucen kao da nema snage da izvuce sve.

Last edited by jaybox; 15-10-2011 at 06:29 PM.
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