mutayu Napisano April 17, 2021 Share #45 Napisano April 17, 2021 vladd je reagovao/la na ovo 1 Link to comment Podeli na ovim sajtovima More sharing options...
chakija Napisano April 18, 2021 Share #46 Napisano April 18, 2021 I kako radi stara baba? Jel bolje od gluve babe? OldSoul/LuDEF? Link to comment Podeli na ovim sajtovima More sharing options...
zerowaf Napisano April 18, 2021 Share #47 Napisano April 18, 2021 Po ljetu je zasigurno bolje. Po zimi....moguće, ali ne znam. Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano April 18, 2021 Autor Share #48 Napisano April 18, 2021 51 minutes ago, chakija said: I kako radi stara baba? Jel bolje od gluve babe? OldSoul/LuDEF? nem pojma, meni svira dobro al' opet - ja nisam merodavan, od onomad kad su mi slonovi na safariju prdnuli u oba uva Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano April 24, 2021 Autor Share #49 Napisano April 24, 2021 Did mount 1T813 today, in place of 2N1099 fired it up, it set itself exactly at same Iq (as previously 2N1099) , did just minor tweak of output offset same situation for both channels - everything perfect in static state then connected old crummy Sigene to input, scope to out, no load, just to check does modulation reaching output first channel OK second channel - started , and somewhere at half ( of max) thingie just went South - speaker DC protection dissengaged relays, got 48V across 0R11 resistor group ( where I need to see 110mV) powered it off, logical check - dead mosfet, dead Ge, two 0R22 resistors dead ( there is a reason why there are 2 or 3W jobbies) was it 1T813 Dud ? most likely ...... and now I'm thinking what and how to test them if I decide to get them in quantity it seems test with actual load, fastest way of Ge tossed in 1L container of demi water is easiest way to do it anyway - replaced what's Dodo, checked rest of circuit and fired it up again this time everything went good, so did tried both channels with load, up to clipping Mentok, shonne and Vix je reagovao/la na ovo 1 2 Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano April 24, 2021 Autor Share #50 Napisano April 24, 2021 checked trice entire setup, done each step at least twice, when seeing how THD numbers are weird 8R load Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano April 24, 2021 Autor Share #51 Napisano April 24, 2021 4R load Link to comment Podeli na ovim sajtovima More sharing options...
Mentok Napisano April 25, 2021 Share #52 Napisano April 25, 2021 nikad nisam skontao šta se gleda od parametara kod tranzistora svih fela kada treba da rade u A klasi. pretpostavljam da je П210Б sa svojih 45 wati discipacije nejačak za ovu primenu? ili ipak ne ? maksimalna struja mu je 12 ampera mislim nekim čudom imam ova dva komada, ali verovatno nisu odgovarajući... doduše po onome što si do sada napisao više mi se sviđa LuDEF kao opcija ( a i strpljivo čekam da vidim M25 R2 ) vidim da su LU-ovi dosta jeftini po ebajovima, još sad znati dal su original u svakom slučaju pratimo p210b.pdf Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano April 25, 2021 Autor Share #53 Napisano April 25, 2021 imam ( negde su i na slici) P210, nekih 10-ak komada ali mi mirise da su malo problematicni po pitanju temperature na 25W disipacije a manje od toga nece da ide Mentok je reagovao/la na ovo 1 Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano April 25, 2021 Autor Share #54 Napisano April 25, 2021 THD, second channel 1T813 just to be sure that there was no heavy weed yesterday, neither for me nor for amp, I made measurements of second channel didn't bother to match Biguns especially, except with universal measureitallthingie, afterwards Hfe and Ubc are confirmed as similar in T-Bed 8R load same Wakoosness as first channel Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano April 25, 2021 Autor Share #55 Napisano April 25, 2021 4R load Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano April 25, 2021 Autor Share #56 Napisano April 25, 2021 Listening same holographic sense as with 2N1099 everything else, in short: -sense of organicity is there, which must be first quality, considering nature of gain aparatus and lack of overall NFB; so, didn't spoiled that -mellow, then I tried to observe sense of speed - no lack in that department, too -Freq. extremes - have no objection one of my fave albums - see pic - besides MZM liking music on, it is extremely nice tool - spaciousness is exquisite, nothing overproduced or over-edited, and Mile's trumpet is full and detailed ( which isn't the case on some other recordings) but - one thing especially useful - in enough places, M. trumpet is blasting to the roof, and any weak link in amplification chain ( and yes, even speakers) would run crying in these moments, while you have ears bleeding well, no with these boring amps .......... aggression of trumpet sound is here, but green is wide, observing that I'm still in same room, and no bleeding ears shonne, zerowaf and krca44 je reagovao/la na ovo 2 1 Link to comment Podeli na ovim sajtovima More sharing options...
chakija Napisano April 26, 2021 Share #57 Napisano April 26, 2021 Pa to treba sirotinji, malo audiofilskih epiteta! Link to comment Podeli na ovim sajtovima More sharing options...
NIXIE Napisano April 26, 2021 Share #58 Napisano April 26, 2021 pre 12 časa, Zen Mod reče -Freq. extremes - have no objection Measuring THD with RMAA is OK, but measuring FR range is extremely suspicious to me. Did you check it with an oscilloscope? Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano April 26, 2021 Autor Share #59 Napisano April 26, 2021 ARTA, nije RMA Link to comment Podeli na ovim sajtovima More sharing options...
NIXIE Napisano April 26, 2021 Share #60 Napisano April 26, 2021 Izvini sad sam tek primetio. ARTA je OK,a li opet ide preko zvučne kartice. Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano April 26, 2021 Autor Share #61 Napisano April 26, 2021 ne znam kakvih zamerki imas na proceduru, al meni dobra dovoljno dokazano ihaj puta - ne merim do 300KHz nego do 20 Link to comment Podeli na ovim sajtovima More sharing options...
krca44 Napisano April 26, 2021 Share #62 Napisano April 26, 2021 Zene Razmisljam o gradnji ovog Ge ampa pa me interesuje koliko treba nabaviti Ge tranzistora radi uparivanja, sta bi bila minimalna kolicina ? Link to comment Podeli na ovim sajtovima More sharing options...
zeljkor Napisano April 26, 2021 Share #63 Napisano April 26, 2021 28 minutes ago, Zen Mod said: ne znam kakvih zamerki imas na proceduru, al meni dobra dovoljno dokazano ihaj puta - ne merim do 300KHz nego do 20 Eve ja cu da izmerim na mom krsu, samo posalji po nekom i onda Link to comment Podeli na ovim sajtovima More sharing options...
vladd Napisano April 26, 2021 Share #64 Napisano April 26, 2021 3 hours ago, NIXIE said: but measuring FR range is extremely suspicious to me. Sta tu ima da je "sumnjivo, ako se ne zna procitati ova postojeca sasvim dovoljna slika merenja. Pojavljivanje sitnih bocnih lobova na harmonicima je cesto ako je rolof po funkciji sinx/x, posto su jako mali, malo je i x, frekventni odziv je zadovoljavajuc u gornjem opsegu, sigurno preko 60k u ovim uslovima a za dalje sta i koliko treba? Pojacalo cuci u svim prirodnim zakonima realne elektronike, bez incidenata... Link to comment Podeli na ovim sajtovima More sharing options...
NIXIE Napisano April 26, 2021 Share #65 Napisano April 26, 2021 Pre sat vremena, vladd reče sigurno preko 60k Sigurno je kad se izmeri osciloskopom, to sam već naučio. Preko audio kartice nije baš sigurno gde "cuci". Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano April 26, 2021 Autor Share #66 Napisano April 26, 2021 najsigurnije kad u sumu ides peske, samo sekira u ruci al nekako se naucismo na prekidac mjku mu, ni drva nam ne trebaju ....... a sta mu je danasnji analizator, nego ultradobra i skupa muzicka kartica? Link to comment Podeli na ovim sajtovima More sharing options...
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