Willi Studer Posted August 9, 2014 Report Share Posted August 9, 2014 Lelee, dobih mail od Bate Kempa, on radi te promene Op Ampova itd., isto toliko košta i linearno napajanje U HRT-u treba da ti se zameni samo jedan op amp, bafer. Quote Link to comment Share on other sites More sharing options...
dude Posted August 10, 2014 Author Report Share Posted August 10, 2014 U HRT-u treba da ti se zameni samo jedan op amp, bafer. To je i meni bilo Äudno, gde Bata nadje 5 ?! Ne izgleda kao Äovek koji vaćari ljude, ali ovo mi je bilo krajnje sumnjivo. Ali ti si spomenuo neki SMD , sa tim si me zbunio. Ti reÄe da to kod nas nema da se kupi u verziji LME 49720, sad kažeÅ¡ op amp buffer..pojasni mi malo,kad uhvatiÅ¡ vremena. Btw, hvala na informaciji za potrebnu koliÄinu zamenskih op ampova u HRT-u. Quote Link to comment Share on other sites More sharing options...
Dark Magician Posted August 10, 2014 Report Share Posted August 10, 2014 SMD znaÄi da se lemi direktno na ploÄu. A ne da se ubacuje u socket. Ima obe varijante kod nas da se kupe (za grdno Äudo). Drugi termin je SOIC. Nemoj greÅ¡kom da uzmeÅ¡ DIP varijantu, oni su namenjeni za stavljanje u socket. Treba ti ovakav: A ne ovakav: Quote Link to comment Share on other sites More sharing options...
dude Posted August 10, 2014 Author Report Share Posted August 10, 2014 MadjioniÄar, vidim da se razumeÅ¡ u elektroniku. Koji meni treba, onaj Å¡to se ubada ili onaj Å¡to se lemi ? Vidi sliku ( zumbiraj ). P.S. Ala si brz, pravi madjioniÄar Quote Link to comment Share on other sites More sharing options...
Dark Magician Posted August 10, 2014 Report Share Posted August 10, 2014 Taj treba da se vadi. Osim ako nije dodatno zalemljen. Onda uzmeÅ¡ DIP varijantu izvuÄeÅ¡ taj, ubodeÅ¡ drugi i kraj problema. Ne treba ti nikakvo posebno znanje. Samo da ne vuÄeÅ¡ kao sivonja. Quote Link to comment Share on other sites More sharing options...
D i g i t a L Posted August 10, 2014 Report Share Posted August 10, 2014 Bata je mislio na 5 sa desne strane,4 u redu i jedan ispred.Taj jedan ispred je bafer op amp na koga je Willy mislio i on ce ti najvise promeniti zvuk.Mislim da je ovo + verzija koja je otprilike duplo skuplja od tvog HRT-a i ima NE5534 4 komada i opa(burr-brown)2132 bafer.Ispred svih opova je D/A konverter Burr-Brown 1794,zanimljiva naprava.Kod tebe mislim da je 1792 i on je odlican. Willijev savet je OK,da zamenis bafer samo,mnogo manje para,a bice nadam se solidno poboljsanje. Nesto njuskak po netu ova tvoja verzija bi trebalo da ima PCM1793 iza koga ide samo bafer op amp,tako da se Bata otprilike zeznuo i tebi samo treba 1 bafer op amp da se zameni. Quote Link to comment Share on other sites More sharing options...
Willi Studer Posted August 10, 2014 Report Share Posted August 10, 2014 Kolo zaokruženo na slici je firmware i to ne treba dirati. Quote Link to comment Share on other sites More sharing options...
dude Posted August 10, 2014 Author Report Share Posted August 10, 2014 Da, moj je PCM 1793, evo iznutrice, samo ja ne vidim da ovde nešto može da se ubada, sem da se lemi. I koji je to buffer op amp, budite ljubazni uperite prstom Quote Link to comment Share on other sites More sharing options...
Willi Studer Posted August 10, 2014 Report Share Posted August 10, 2014 Crna buba sa osam nogu levo, blizu ÄinÄeva. Druga tri kola u sredini nisu operacioni pojaÄivaÄi nego stabilizatori napona. Quote Link to comment Share on other sites More sharing options...
dude Posted August 10, 2014 Author Report Share Posted August 10, 2014 Crna buba sa osam nogu levo, blizu ÄinÄeva. Druga tri kola u sredini nisu operacioni pojaÄivaÄi nego stabilizatori napona. Haahah..hvala Quote Link to comment Share on other sites More sharing options...
Willi Studer Posted August 10, 2014 Report Share Posted August 10, 2014 Nažalost, Willi nema opremu za opravku SMT, moraće neko drugi. Quote Link to comment Share on other sites More sharing options...
Willi Studer Posted August 10, 2014 Report Share Posted August 10, 2014 Mislim da bi ovo napajanje koje je Kuja prikazao na forumu moglo da se uradi jeftinije od STR-a: Quote Link to comment Share on other sites More sharing options...
dude Posted August 11, 2014 Author Report Share Posted August 11, 2014 Evo ga majstor Ilija ( Vule ), traži 3000 dinara za zamenu op ampa, njegov deo i rad, plus poštarina tamo vamo, izlazi oko 35 evra. http://www.kupujemprodajem.com/Upgrade-popravka-otkup-DAC-ova-14701169-oglas.htm?filter_id=147 Quote Link to comment Share on other sites More sharing options...
D i g i t a L Posted August 11, 2014 Report Share Posted August 11, 2014 Izgleda da je Ilija zeznuo i Bata sa cifrom.Sta je sa forumskim majstorima? Quote Link to comment Share on other sites More sharing options...
Willi Studer Posted August 11, 2014 Report Share Posted August 11, 2014 Ja bih prvo rešavao napajanje. Quote Link to comment Share on other sites More sharing options...
Dark Magician Posted August 11, 2014 Report Share Posted August 11, 2014 Sa tim svim se ne isplati, bolje je da zameni skroz za bolje. Quote Link to comment Share on other sites More sharing options...
dude Posted August 11, 2014 Author Report Share Posted August 11, 2014 Podaci su samo informativnog karaktera..razgovaramo, razmenjujemo mišljenja..videćemo.. Quote Link to comment Share on other sites More sharing options...
dude Posted August 17, 2014 Author Report Share Posted August 17, 2014 Poslao sam pre par dana mail, gospodinu Kevinu Halversonu, glavnom inženjeru i konstruktoru HRT Music Streamer serije. Prijatno sam se iznenadio Å¡to me uopÅ¡te udostojio odgovora, pa evo da ga podelim sa forumaÅ¡ima, možda će nekom biti smernica, a nekom Äisto korisna informacija. U pismu sam namerno naveo da koristim jeftin kabal ( mada je u opticaju Audioquest Forest ). Ovom prilikom pohvaljujem tehniÄku podrÅ¡ku High Resolution Technologies-a New Form Submission Email: [email protected] Message: Dear Sirs, I own the HRT Music Streamer II for over a year and I am satisfied. Reading the various discussions in the forums, I began to take an interest in a slight upgrade. In fact, if I go to a general change in op amp 33078 with LME 49720 or go towards the procurement of a linear power supply, all for the sake of drawing the most of this device? Honestly, what do you think? Would I already extracted the maximum or there is a reserve that could be used, but not with a great investment?! Would I purchase a higher quality cable, brings some improvement, I currently use a Hama (shielded) for a cost of $ 5? I would be very grateful if you would deign to answer me and satisfy my curiosity. Best regards from Serbia Odgovor: Re: Support Form Submission Kevin Halverson [email protected] преко yahoo.com 15. авг (пре 2 дана) Thank you for your submission and questions. The topology of a Music Streamer II isn't going to benefit from a "linear power supply" as the buss power is isolated and regenerated via the data and power isolation stages present in the product. If you are looking for an 'upgrade' the best approach by far would be to upgrade from a Music Streamer II to a Music Streamer III. The factory offers a full upgrade program and that would get you all the benefits of the modern product. Regarding USB cables, length is as or more important than any other property. The shorter the USB cable the better. Should you have any additional questions, please feel free to forward them as they arise. Kevin Halverson CTO High Resolution Technologies, LLC From: "[email protected]" <[email protected]>To: [email protected]Sent: Tuesday, August 12, 2014 9:55 AMSubject: Support Form Submission That's all folks ! Quote Link to comment Share on other sites More sharing options...
Willi Studer Posted August 17, 2014 Report Share Posted August 17, 2014 OÄekivano. A tvoje pitanje je bilo kako da unaprediÅ¡ postojeći DAC. Quote Link to comment Share on other sites More sharing options...
Dark Magician Posted August 17, 2014 Report Share Posted August 17, 2014 Pa na to svakako neće dobiti odgovor od firme, njima je u interesu da prodaju svoj proizvod, ne da ga unaprediÅ¡, da ne bi kupovao. Ti Äipovi su inaÄe neverovatno jeftini na veliko, tako da ugradnja loÅ¡ijih je samo naÄin da veÅ¡taÄki prave razlike. Mogli su oni da ugrade LME 49720 bez problema. Quote Link to comment Share on other sites More sharing options...
D i g i t a L Posted August 17, 2014 Report Share Posted August 17, 2014 Mogli su oni da ugrade LME 49720 bez problema. To u verziji HRT V+. Ovo je dobro i istinito "Regarding USB cables, length is as or more important than any other property. The shorter the USB cable the better." Definitivno ako je kabel dugacak 400m,bolji zvuk ce dati kabel od 2m . Za unapredjenje kupis noviji model " If you are looking for an 'upgrade' the best approach by far would be to upgrade from a Music Streamer II to a Music Streamer III",ili mozda sacekati V+ verziju koja ce imati linearno napajanje i 49720(1000e). Offtopic: Vake odgovore daje Telekom kad ti rikne ruter.Jednom prilikom moj "planuo",ja prijavio kvar a devojcica sa druge strane linije kaze "ugasi,pa upali",a ruter pushi sve u shesnes. Quote Link to comment Share on other sites More sharing options...
dude Posted August 17, 2014 Author Report Share Posted August 17, 2014 Ma, meni je najinteresantnije ovo vezano za napajanje i USB kabal.. I ovi što prave ( konstruišu ) napajanja , a obitavaju na forumu, nemojte mi reći da to rade samo iz ljubavi prema hifi ili od toga žive, tako da, svi su ( smo ) subjektivni, i DIY majstori i ovi fabrikanti. Placebo ili nocebo, pitanje je sad ?! Quote Link to comment Share on other sites More sharing options...
D i g i t a L Posted August 17, 2014 Report Share Posted August 17, 2014 I ovi što prave ( konstruišu ) napajanja , a obitavaju na forumu, nemojte mi reći da to rade samo iz ljubavi prema hifi ili od toga žive, tako da, svi su ( smo ) subjektivni Zive od ljubavi - prema HiFi. Dodjosmo do one "biblijske" praviti ili kupiti gotovo. Quote Link to comment Share on other sites More sharing options...
Dark Magician Posted August 17, 2014 Report Share Posted August 17, 2014 Ma, meni je najinteresantnije ovo vezano za napajanje i USB kabal.. I ovi Å¡to prave ( konstruiÅ¡u ) napajanja , a obitavaju na forumu, nemojte mi reći da to rade samo iz ljubavi prema hifi ili od toga žive, tako da, svi su ( smo ) subjektivni, i DIY majstori i ovi fabrikanti. Placebo ili nocebo, pitanje je sad ?! Dužina jedina ima realnu primenu, Å¡to je duži to je slabiji. OgraniÄena je dužina, ali to je opet na podugaÄak kabl, dva, tri metra je nebino. Za leÄenje placeba, i ustanovljavanje da li ga ima, treba neko da vam menja USB kabl a da ne znate, pa da se vidi da li bi primetili. Quote Link to comment Share on other sites More sharing options...
dude Posted August 17, 2014 Author Report Share Posted August 17, 2014 Pazite..najskuplji streameri HD i PRO koÅ¡taju oko 500 eura, mnogo su zahtevniji po pitanju napona i struje, ali i za njih je predvidjeno napajanje sa USB porta i Kevin ne menja svoj stav po tom pitanju, bem li ga, valjda on zna najbolje. Razvio bi on neko ekstra ultra giga linearno napajanje za svoje streamere, da ima preke potrebe. Ne kažem , da daÄići neće raditi bolje sa eksternim napajanjem, samo mi je Äudno, da ih on nije razvio za svoje najelitnije modele. http://www.hirestech.com/product/?pid=116#prods Quote Link to comment Share on other sites More sharing options...
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