Njezino samozatajno visočanstvo 6AS7

[Dean]

Ajdmo onda ovako....
Digurno se djeli na L i D !
S obzirom da Davorin ne bi stavio neku ECC "običnu" onda je nešto što ni ne znamo da postoji...

[davorin]

Ajdmo onda ovako....
Digurno se djeli na L i D !
S obzirom da Davorin ne bi stavio neku ECC "običnu" onda je nešto što ni ne znamo da postoji...

Da točno, počinje sa E...
U igri su E180CC i E80CC, što će direktno ovisiti o pojačanju okretača faze, pobudnog i izlaznog stupnja, odnosno koliko će trebati negativne povratne veze.

[joe dalton]

A ako se oce vise snage iz navedene konfiguracije sto ne ici na 6336A cevku? Takodjer dobavljiva i da se ubost povoljno ako je covjek strpljiv. Ja vec godinu dana cekam drugi RCA par....

http://educypedia.karadimov.info/library/ax-glass_audio_special05.pdf

Imam dvije 6336A od "Tung-Sol"-a i dvije firme "Chatam", ali još sam u fazi skupljanja!

Šta nije to ista cijev? TungSol - Chatam?

Na ovo sam mislio:
http://www.ebay.com/itm/NOS-NIB-Tung-Sol-Chatham-6336-Power-Supply-Tube-/181091129471?pt=Vintage_Electronics_R2&hash=item2a29df587f
Ili ove:
http://www.ebay.com/itm/TUNG-SOL-6336B-Matched-Pair-Vacuum-Tubes-Black-Plate-Strong-Test-1959-/190822064300?pt=Vintage_Electronics_R2&hash=item2c6de1a0ac

Edit: Možda bi bilo dobro da administracija prebaci ovu raspravu o 6336 u drugu temu?

[davorin]

Izvod iz rasprave o elektronci 6AS7 odnosno 6080 :

The 6080 is identical in performance to the 6AS7G. The 6AS7G is a ST/"Coke Bottle" glass type, whereas the 6080 is straight bottle. I almost universally prefer the 6AS7G. I have about 100 6AS7G/6080/6520/5998 tubes.
And it is the 6520, not the 6528, that is equivalent to the 6AS7G. The 6520 was only made by Tung-sol.
Of the US Makers, RCA-branded 6AS7G's are by far the most common, and they sound good. Tung-Sol also made 6AS7's, and they are a little better sounding IMO than the RCA's (they are also constructed a little differently), but they are much harder to find, and not worth paying an enormous premium for. GE, Sylvania, Chatham and Raytheon also made 6AS7G's, but they also don't seem to offer anything the RCA's don't sonically, IMO. There are other brands available, but I am pretty sure they are just branded versions of the other manufacturers listed. The JAN (Joint Army Navy) versions were supposedly somehow selected specially (tighter tolerances, etc), but there are no construction differences with the non-military versions. I have seen JAN-6AS7G's from RCA, GE, Tung-sol, and Chatham (which at one point was bought by Tung-Sol).
The GEC UK-made 6AS7G (A1834) are my favorite of the 6AS7G - they have brown bases and a different plate structure than the US types.
Finally, there are the Russian equivalent 6N13S, but I really don't care for these. I have seen Amperex 6AS7G's that say "made in Holland", and Ultron "made in W. Germany", but both of these were almost certainly Russian.
The primary construction differences in a 6AS7G are that some are made with a top halo getter (and the resulting chrome top flashing appearance) and some with bottom-mounted D getters (where the flashing is at the base and the tube has a "clear top" appearance). RCA also made "Grey Plate" and "Black Plate" versions â€" all other makers 6AS7G's have black plates. Supposedly the Black plates sound better, but I believe this is either untrue or extremely subtle at best. Some also have an additional metal "skirting" shielding the wiring as it travels from the base to the grid, but I have not been able to attribute any real sonic differences there either. Bottom line any Western 6AS7G is a good choice, as long as it's in good shape and isn't horribly microphonic.
There is also the 5998 tube, made only by Tung-Sol regardless of branding, which does have different operating characteristics, and may or may not work in any given 6AS7G application, although it does in the amps I have, snd sounds a little better than most 6AS7G's. In general the 5998 offers slightly more neutral sound, slightly better transparency, and are less likely to be noisy. They are approximately 2-3x the price, generally, and I have seen some idiots paying $50 per tube on Ebay when you can buy them NOS from reputable online tube-sellers for $25 each. Still, this is more than double the 6AS7G price.
The 2399 is also a Tung-Sol only tube, and I have never scored one myself, but supposedly it is also just a high-quality 6AS7G.

Iz slijedećeg teksta se može zaključiti da je firma CHATHAM naknadno kupljena od strane firme TUNG-SOL, ali do tada je pod svojim imenom distribuirala elektronke različitih proizvođača. Meni se čini da je to radila i nakon toda što je postala dio TUNG-SOL -a, ali ne mogu biti siguran:

Chatam Electronics Corporation; 475 Washington Street, Newark 2, New Jersey, USA: We are not sure if it was a producer of tubes. But (2) tubes are listed under that name in "Röhren-Codex 1948". It would seem that Chatam is probably a mistake for Chatham.
The Chatham brand is well known for tubes mostly of the industrial and transmitting variety.
Chatham also produced equipment, notably military items such as Geiger Counters.
The Chatham tubes owe more to Tung-Sol as Chatham was not independent of their parent company.
History:
Chatham Electronics Div was latterly a Division of Tung-Sol Electric Inc, Livingston, NJ. This in turn was part of Wagner Electric Corp in 1966 finally acquired by Studebaker in 1967. The Chatham organisation manufactured equipment but the tubes owe more to Tung-Sol as Chatham was not independent of their parent company.

Vjerujem da su i elektronke 6336(A) na sličan način brandirane, a moguće je čak i da ih sve u nekim različitim periodima radila ista tvornica s različitim označavanjem.

[harkonen]

"Finally, there are the Russian equivalent 6N13S, but I really don't care for these."

I care. Pogotovo za Svetlanu.
Kad ih koliko-toliko uparite po karakteristikama unutar sekcija, te kad se formiraju i stabiliziraju nakon kojih desetak sati,odlično zvuče i prilično su stabilne nakon toga. Nimalo ne zaostaju za gore navedenim,
čak bi rekao da su 6as7 više "oštrije", no i to je relevantno i subjektivno i vjerujem da često ovisi o vanjskim utjecajima na slušača - da li je danas kiša, ili nije, da smo prije slušanja jeli sarmu ili nismo, da li nas je naljutila.....
Sve su one dobre.
Pogotovo kad malo ostariš.
Mislim na lampe.

[davorin]

Prilikom servisiranja "Atma-Sphere M-60", koji ima 10 komada 6AS7G, sam u pojačalu ostavio ruske 6N13S, koje su imale najugodniji ton.
Probao sam više varijanti elektronki, a sve su imale različiti ton, no složio sam se s vlasnikom da spomenute ruske 6N13S imaju vrlo balansiran frekventni spektar i izvrsnu dinamiku.
Jedinu zamjerku sam imao da sam morao kupiti ~30 komada te selekcijom i mjerenjem "poredati" sve po emisiji, jer su se prilično razlikovale jedna od druge.

[Dean]

..
Jedinu zamjerku sam imao da sam morao kupiti ~30 komada te selekcijom i mjerenjem "poredati" sve po emisiji, jer su se prilično razlikovale jedna od druge.

Tu smo u prednosti mi koji kupujemo "na komad". Ja kupim 2 lampe i mislim da su savršeno uparene i ispravne !

[davorin]

Montaža "glavnih" dijelova na obojanu gornju ploču šasije:

[zuzi]

Amer sigurno nije nikad imao u rukama SED lampu, valjda se bojao da se ne ozrači.

[Dean]

Vrata na našem haustoru su smeđe boje.....zato jer je zgrada bila ZET-ova, a precjednik kučnog savijeta je bio zetovac i očito je popalio dosta boje za tramvaje, pa je svake godine varbao vrata u istu boju...
Gdje si ti našao ovu proljetno plavu rapsodiju?

O škrtosti da bi se ofrbalo i doljnju stranu neću ni govoriti...