tag:blogger.com,1999:blog-2098337119765190876.post1618120429334605499..comments2024-03-19T01:56:16.214+01:00Comments on VinylSavor: Tube of the Month : The 6SF5VinylSavorhttp://www.blogger.com/profile/03255472557028244395noreply@blogger.comBlogger12125tag:blogger.com,1999:blog-2098337119765190876.post-43717120123941309872023-05-14T17:29:41.933+02:002023-05-14T17:29:41.933+02:00You should anyways check if the surrounding circui...You should anyways check if the surrounding circuits needs some adaptation when changing for a different tube type. Then you can also change the socket wiring and maybe use a 6J5. But if you do not have the knowledge how to do that find a technician who doesAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-43706020741214963172023-05-14T17:13:09.126+02:002023-05-14T17:13:09.126+02:00Thank you for your reply. I have a Masco 808 amp I...Thank you for your reply. I have a Masco 808 amp I use for blues harp (V1: 6SF5 - V2: 6SJ7). It begins to feedback at low volumes, about 3 or4, with high output mic elements. Are there lower gain tubes with comparable pinouts that can be directly substituted such as there is with the 12A_7 series?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-87965180822167384562023-05-14T09:22:59.325+02:002023-05-14T09:22:59.325+02:00Depends on what you mean by substitute. There are ...Depends on what you mean by substitute. There are a lot of tubes with lower gain than 6SF5Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-54648341622439461922023-05-14T07:17:04.231+02:002023-05-14T07:17:04.231+02:00Are there lower gain substitutes for the 6SF5 ?Are there lower gain substitutes for the 6SF5 ?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-5687614272908155622017-11-11T00:19:53.042+01:002017-11-11T00:19:53.042+01:00Don Garber of Fi used these in his famous 2A3 amp....Don Garber of Fi used these in his famous 2A3 amp. One I’d like to resurrect!��Anonymoushttps://www.blogger.com/profile/17647523699729375094noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-8784753398249236382017-03-06T08:06:19.756+01:002017-03-06T08:06:19.756+01:00There are still many phono preamps out there and n...There are still many phono preamps out there and new ones being built which need high gain in the first stage<br /><br />ThomasVinylSavorhttps://www.blogger.com/profile/03255472557028244395noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-55436581454444226782017-03-06T05:42:49.487+01:002017-03-06T05:42:49.487+01:00"Even more surprising that it is not used mor..."Even more surprising that it is not used more often".<br /><br />Why should this surprise you? When designing for normal, line level (1.0Vrms) input, I don't need that much gain. About the only practical application would be for the LTP, and there are already loads of dual triodes for that: 12AX7, 6SL7, 6SC7, etc. Saves a hole.Dolphin Hollowstate Labshttps://www.blogger.com/profile/09664030039145208471noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-15177355673632294562016-11-30T22:46:52.951+01:002016-11-30T22:46:52.951+01:00They are quite similar in characteristics. You sho...They are quite similar in characteristics. You should be able to adapt your amp to use 6SF5VinylSavorhttps://www.blogger.com/profile/03255472557028244395noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-35282659812034046252016-11-30T22:37:46.343+01:002016-11-30T22:37:46.343+01:00Olá meu amplificador, circuito Mullard, tem uma 12...Olá meu amplificador, circuito Mullard, tem uma 12AX7 na entrada, um triodo por canal. Pretendo colocar no lugar, duas 6SF5, uma para cada canal. Elas equivalem a meia 12AX7?matraca de bordélhttps://www.blogger.com/profile/06089105151093953928noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-66838872765379353192014-03-13T07:02:30.215+01:002014-03-13T07:02:30.215+01:00Hi!
This depends on your application.
As an examp...Hi!<br /><br />This depends on your application.<br />As an example see here:<br /><br />http://vinylsavor.blogspot.de/2013/04/the-octal-phono-preamplifier-part-1.html<br /><br />VinylSavorhttps://www.blogger.com/profile/03255472557028244395noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-10829242711777180362014-03-12T21:59:32.103+01:002014-03-12T21:59:32.103+01:00If you were setting these up with cathode bias wha...If you were setting these up with cathode bias what restistor and bypass cap values would you recommend?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-80444731779178045462013-09-03T00:59:52.163+02:002013-09-03T00:59:52.163+02:00Fantastic. Exactly what I was looking for. Thank...Fantastic. Exactly what I was looking for. Thank you!aballhttps://www.blogger.com/profile/02271568752022875445noreply@blogger.com