krca44

Kako ti se cini taj Duelung DCA 12 GA u odnosu na kvalitetne Mogami licnaste kablove koje si imao ? Pitam jer me zanima zamena postojecih oranza a licna mi generalno ne lezi pa me inteesuje taj Duelund sto je neki ko tanji solid core u snopu ako sam pravilno ukapirao ?

Space - Magic Fly https://www.youtube.com/watch?v=ZavwtJxmqJI

More nije nista hitno. 1,000 Vdc imam a 10n ce biti 2,000 Vdc - to ima i odgovara mi. ------- Nego to je za sekundar visokog napona - a za grejanje cevi .... hmmm nije visok napon ali ide 0A9 struje na svakom - pa da i tu uzmem bar X klasu mkp kondova ?

Hodnik iza levog zvucnika verovatno pravi rupu u odzivu. Odlicno je sto Dirac-om mozes ispeglati odziv i uzivati u muzici.

Nixie znaci za probu mogu da ti dam samo trafoe ? Da li ti trebaju otpori od 2W ? Imam raznih vrednosti iz nasih radnji. 100n / 1,000 Vdc imam, sad se setih a 10n / 2,000 Vdc ima u Silken-u, taman tamo moram kupiti podnozja za cevi.

Voltaza ? S obzirom da je sekundar 268 Vac Off-Load, nesto nize pod opterecenjem - provericu. Pitam jer imam 100N / 400 Vdc pa ne znam sad da nije knap - mozda je bolje da uzmem nesto od 630-1,200 Vdc deklarisano.... ? isto vazi i za 10N.

Chiko a jel smeju da se probaju HV trafoi ?

Ako hoces dacu ti ja dva trafoa za probu.... taman mi pomognes da dobijem snubber vrednosti.... Uuups - izvini sad sam ukapirao kakav ti trafo treba, nazalost nemam ( imam trafo sa sekundarom od 21 Vac / 250 mA - ako ti igra mozes ga koristiti dok ne nadjes neki odgovarajuci, duze vreme ).

Fali ti 10" replika originalnog izdanja, mono, izdavac SAM - imao ga je Juno, ja kupih drugi komad pre par meseci. Radjeno sa oridji traka, odlican. A da Pierre Michelot i onaj drugi francuz nisu inace znali uopste engleski kad je muzika stvarana.

Gramonska shasija ?

Jel sad konacno kreces na cevni izlaz ?

Ih Jadis je francuska firma pa rade to isto u "jeftinijim" serijama od par hiljada eu. Licno sam slusao Sindrica koji je radio servis - covek je bio jako iznenadjen koliko lose delove ugradjuju.

Na temu CD drajvera bez horne videh slike Altec kutija na kojima je to probano, pre jedno 60-70 godina pa su izgleda odmah odustali ( neki komerc model ). Znam da su neki ljudi to radili relativno skoro ali iz onoga sto sam procitao / video to mi izgleda dosta nedoreceno - tipa sta su mane i slicno.

Evo da ti citiram kako je radio kutiju i skretnicu drugog reda : "Going into more detail on the Altec Valencia and the Altec Model 19, the Valencia was a pre-Theile/Small vented speaker with a very basic 12 dB/octave crossover at a nominal 800 Hz. No horn EQ. The Model 19 came out ten years later as the successor to the Valencia. The bass cabinet is a T/S vented bass alignment in a 9 cubic foot enclosure, and the crossover was moved up to 1200 Hz, with adjustable mid and HF equalization. The bass driver and HF horn were essentially the same as before, while the compression driver was improved with the Tangerine phase plug. Another difference between the Valencia and the Model 19 was the Valencia was designed at the end of the tube era, and transistors had completely replaced tube amps when the Model 19 was designed. The new speaker is intended for use with triode amplifiers with damping factors of about 4 (Zout = 2 ohms), a closed box is a better choice, giving an overall system Qts between 0.9 and 1.0, not that different than the classic acoustic suspension speakers of the Fifties ... a moderate bass lift. Crossovers are similar, and the horn is a much flatter modern design." "It is standard practice to sum all resistances appearing at the terminals of the bass speaker ... output Z of the amplifier + cable resistance + DCR of the series inductor(s) of the lowpass section of the crossover. As mentioned above, this raises the system Qts if the box size is the same, but can be offset if the box size is increased. The overall goal is to have the Altec/GPA 416 Alnico-magnet driver in a loosely filled closed box, with source Z's between 1 and 2 ohms, and also accounting for "room lift" in the below-60 Hz region. An alternate approach is to use a vented box with about twice the volume, preferably in an alignment with favorable group delay characteristics. Both LF and HF sections use a passive crossover in the 640 to 800 Hz range, powered by a single amplifier in the 10 to 60-watt range. The expected attenuation in the HF section will be about 10 to 12 dB, with a shelf equalizer if the Yuichi A290 or ES290 type horn is used. It is a simple 2-way system optimized for vacuum tube amplifiers with zero to moderate feedback. If response down to 20 Hz is desired, that can be provided with a separately powered pair of subwoofers. In that application, Class AB or Class D amplifiers are the best choice, since they have the most power, are the most efficient, and there is limited impression of tonality below 40 Hz." "I want to thank Joseph (Troy) Crowe for his extensive measurements on the Altec/GPA 416 Alnico in a 100L sealed box enclosure. I suspect the very low IM distortion is the result of the underhung voice coil, which is very rare in modern drivers. I am also gratified to see the cumulative-decay (waterfall) curves are as good as they are. 416 Measurements : https://josephcrowe.com/blogs/news/altec-416-8b-in-100l-sealed I also want to thank Gary Dahl for completing the Beyond the Ariel project with his sealed-box Great Plains Audio 416 Alnicos and the AH425 Azurahorn. He's chosen the extremely rare Yamaha 6688 compression driver, while I will be following Joseph Crowe's guidance on the SB Audience CDN-65T driver, which has remarkable performance for a large format compression driver. I will be contacting Joseph Crowe for guidance on getting the last mile of this project done: an optimal crossover, most probably using an 1.8 kHz notch filter for the 416, and a 3D-printed or NC-milled adaptor between the 1.4" circular exit of the CDN-65T driver and the 2.0" square entrance of the Athos Audio Yuichi A290 wood horn. Alternatively, using Crowe's own ES-290 wood horn, but I already have both AH425's and A290's horns sitting in the basement, awaiting use. I don't think I need three sets of horns to play with, but who knows? The measurements referenced above show a crossover in the 640 to 800 Hz region is well-suited to the 416, especially with a moderate notch filter tuned to 1.8 kHz. I still favor large format compression drivers, since they allow a crossover well below 1.2 kHz, in the 500 to 800 Hz region. An octave makes a big difference in this frequency region. The SB Audience driver is unusual because it extends smoothly to 17 kHz, while most drivers with 3 to 4-inch diameter Ti or Al diaphragms usually have their first resonance around 13 kHz. I don't know what SB has done, but that is exceptional performance, approaching carbon fiber or beryllium diaphragms, at one-third to one-tenth the price. As for other questions, I have no recommendations for transistor amplifiers, either Class AB or Class D, or bipolar transistor vs GaN FET. From what I heard at the Seattle show, Class D using GaN FETs has come a long way, and has surpassed linear Class AB transistor, but still isn't quite in DHT triode territory yet. But is getting close."

Vidi ovde : https://www.diyaudio.com/community/threads/beyond-the-ariel.100392/page-767 Par stranica pre toga Lynn objasnjava koncept - zatvorena kutija / kompresija + cd & Horna Smo probaj da gabaritno smanjis koncept. P.S. Izvini sad vidim da sam malo omasio al nema veze probao je on i RAAL kao visoki pa mozda odatle nesto uspes da izvuces.

Treba da doodaas kriilcaaa ! tj. sto nisi sacuvao bokove i krov a izbio samo zadnju stranu ?

Ja koristim zilet klasican - nego ovo tvoje izgleda kao da si koristio neki profi alat.

Al' si lepo skinuo teflon sa zica za dzampere - svaka ti cast

Nema nishta bez cevi.

Hvala Nego imas li neki visak 6E5P, recimo par-dva koje bi prodao ? ili koga da pitam molim te shibni mi na pm.

Veceras ide : Arsen Dedic - Otisak Autora Olga Janchevska + ansambl Dushana Radetica - ruske pesme Zvonko Bogdan i orkestar Shandora Lakatosha

Sve zajedno 3,800 Din. Ako mozes molim te posalji mi shemu koju koristis za proveru cevi - hocu da to napravim da ne akam podnozja na phono pcb. Treba mi da proverim unimerom samo osnovne parametre za pocetak. P.S. Ima ih dovoljno za nesto jos drugo, inace sam povadio datasheet-eve da uradim matish za osnovni trodni spoj - za I/V.

Stigle mi 6J9P-E pentode, 10 komada. Ja sam mislio da ce sve to biti iz iste fabrike kad ono 3 + jedan nepoznat poizvodjac - na balonu pise samo Sdelano... / napravljeno u SSSR. Od 10 kom samo 8 ima OTK, znaci dve su izasle iz fabrike bez kontrole. Od ovih 8 samo 5 ima Romb - sto ja tumacim da su stvarno za vojsku. Fabrike : Oktyabr, Polios, jedna Foton.... Stavio da rade one dve bez fabrickih logoa ali koje imaju OTK + Romb. Ostale jos nisam proveravao u kolu. Elem ipak zadovoljan, ove dve su zamenile E180F Philips i generalno zvuk ima nesto vise basa ( to je ono sto najlakse odmah cujem ).... cini se da je uopsteno zvuk malo cistiji ali to treba jos proveriti, mozda samo sad RIAA EQ ima bolji "tilt". Nabavku sam radio primarno jer datasheet-vi ruski pokazauju skoro 1:1 kopiju ali neka merenja u istim uslovima, koja sam nalazio povremeno - ukazuju da ovo nisu potpuno iste cevi i da ruske mozda imaju nizu anodnu impedansu za isti opseg radnih uveta. Procena je bila - ako su stvarno makar malo razlicite a kolo SRPP sa gornjim clanom IRF830 u startu dizajnirano sa 6J9P-E.... da bi to trebalo probati jer ce mozda bolje raditi.

Sa 12" midbasa i 12" siroke horne ja se ne vracam vise na manje. Tesko da cu sa cevi da predjem na SS mada sam slusao zaista odlicne radove. Meni moji fetishi sviraju odlicno - samo hocu da ih poboljsam jos malo... sto i nije neka potreba nego vise radoznalost. Tipa 807 PP + Lenco poboljsan + cevni izlaz za AD1865.

Paaa mogu samo da kazem da u mom slucaju PSUD pokazuje ogroman strujni peak 1A7 pri punnjenju sa 220 uF / 500 Vdc kondom - stavise taj strujni peak se smanjuje sa manjim kondom ali problem je sto recimo 22 uF ne moze ( mislim ) da istrpi peak od 1A. Kond je trenutno 100 uF / 450 Vdc. Dakle ne mislim da je bas bolje uzimati mnogo jaci trafo od potrebnog - ja sam ovo uradio & ugradio jer sam trafo zamislio za visestruke namene a ponajvise za napone od oko 280-300 Vdc sa 40-60 mA moguce potrosnje. Da sam narucivao bas custom za taj jedan aparat - uradio bih drugacije sto na kraju mozda i uradim. P.S. jos jedno izvinjenje za Off. Necu vise