tag:blogger.com,1999:blog-2098337119765190876.post8682705632611387839..comments2024-03-28T13:34:32.307+01:00Comments on VinylSavor: Tube of the Month: The 6HS5VinylSavorhttp://www.blogger.com/profile/03255472557028244395noreply@blogger.comBlogger22125tag:blogger.com,1999:blog-2098337119765190876.post-89981722923290760052022-11-05T03:32:39.446+01:002022-11-05T03:32:39.446+01:00I have used the 6HS5 as a dc coupled deflection am...I have used the 6HS5 as a dc coupled deflection amplifier, It worked great and we sold a few. The biggest problem was a low capacitance heater winding. Transformer winders would not understand that air in the winding was a must. We got part of the way but never much beyond 5kHz because of the capacitance of the heater winding. We used -2500V to +2500V and the output swung +/- 2000V. the standing current was 11mA, so the tubes dissipated 28W all the time. It was all class A and lots of negative feedback, probably 50dB or more. H J WeedonAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-23329651519218242742018-07-22T08:13:37.363+02:002018-07-22T08:13:37.363+02:00you can try that, but you will need a second stage...you can try that, but you will need a second stage to provide the large drive voltage neededVinylSavorhttps://www.blogger.com/profile/03255472557028244395noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-3094229606181362272018-07-22T05:42:57.440+02:002018-07-22T05:42:57.440+02:00How about a cathod follower to drive speker via mo...How about a cathod follower to drive speker via more common xfrmr?Anonymoushttps://www.blogger.com/profile/03703293183622456464noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-64424424145501479142018-02-25T20:36:20.172+01:002018-02-25T20:36:20.172+01:00This was a very interesting thread.
May be interes...This was a very interesting thread.<br />May be interesting to note it's extremely easy to find a HT source to power a few of these.<br /><br />Just find a couple of microwave oven transformers.<br />You can choose to run 230V ones in series to halve the output and/or give a centre tapped +/- supply rails. Very cheap and powerful.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-83050582547076690582017-06-13T08:07:52.905+02:002017-06-13T08:07:52.905+02:00I don't think that will be enough in order to ...I don't think that will be enough in order to get the output voltage you needVinylSavorhttps://www.blogger.com/profile/03255472557028244395noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-63594550691909174492017-06-13T01:42:07.357+02:002017-06-13T01:42:07.357+02:00I am making KT150 CSPP amplifier, using 6HS5 as a...I am making KT150 CSPP amplifier, using 6HS5 as a driver with anode choke PP drive. CSPP requires quite a high driving voltage so I hope to use 6HS5 600v on plate. I don't know if it is high voltage enough for 6HS5 ? I am going to try.Anonymoushttps://www.blogger.com/profile/11150676317042273492noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-34519873123141977772017-06-12T23:48:19.370+02:002017-06-12T23:48:19.370+02:00Hi!
I have not worked with the 6HS5 for a while. I...Hi!<br />I have not worked with the 6HS5 for a while. It has very high plate impedance so even a PPP amp would require OPTS with very high primary impedance. Maybe the LL1691B would work<br /><br />BR<br /><br />ThomasVinylSavorhttps://www.blogger.com/profile/03255472557028244395noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-44909719145567381192017-06-12T21:16:58.044+02:002017-06-12T21:16:58.044+02:00Hi Thomas,
What about a PPP amp based on the 6HS5 ...Hi Thomas,<br />What about a PPP amp based on the 6HS5 with a phase splitter trafo at the input? What Lundahl would you recommend for the job? It seems like otherwise we could adapt your SE schematic.ludcamhttps://www.blogger.com/profile/02581851150991697554noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-53195607262642143742017-04-29T14:27:37.727+02:002017-04-29T14:27:37.727+02:00This appears to be the ideal valve to drive a Pair...This appears to be the ideal valve to drive a Pair of triode strapped 813.<br /><br />Interesting,the cavity anode design was the last development of the very last units.<br /><br />The more fragile 8417 was done this way, and also has very high gain.Unknownhttps://www.blogger.com/profile/07273478513492336119noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-57693617237396958062016-10-27T09:25:10.266+02:002016-10-27T09:25:10.266+02:00I never tried beam plate connected to anode.
Only ...I never tried beam plate connected to anode.<br />Only connected to cathodeVinylSavorhttps://www.blogger.com/profile/03255472557028244395noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-75783782135299742802016-10-27T08:40:38.357+02:002016-10-27T08:40:38.357+02:00Hi
In article above written by you "The bea...Hi <br />In article above written by you "The beam forming plate can be connected to the cathode at the socket. ". It is right?Anonymoushttps://www.blogger.com/profile/11150676317042273492noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-67706565281651884502016-10-27T07:36:31.455+02:002016-10-27T07:36:31.455+02:00This comment has been removed by the author.VinylSavorhttps://www.blogger.com/profile/03255472557028244395noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-4894247797199907912016-10-27T00:03:52.965+02:002016-10-27T00:03:52.965+02:00I have been tested 6hv5's beam plate connecte...I have been tested 6hv5's beam plate connected plate , or connected to cathode . I don't find much of difference with sound. How do you think ,it is better to connect with plate or cathode?<br /><br />Anonymoushttps://www.blogger.com/profile/11150676317042273492noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-20002184546901857012016-10-23T20:13:06.875+02:002016-10-23T20:13:06.875+02:00I would disagree these are not rediculious cheap a...I would disagree these are not rediculious cheap a dollar a piece is more like it :)Anonymoushttps://www.blogger.com/profile/06059118567221463718noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-5414490774819407212016-10-23T20:07:58.744+02:002016-10-23T20:07:58.744+02:00If you want ridiculous prices you need to search a...If you want ridiculous prices you need to search and be patient. Normally they are offered around $5-$8 which is still ridiculously low for such a piece of technology<br /><br />ThomasVinylSavorhttps://www.blogger.com/profile/03255472557028244395noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-45148603698638434542016-10-23T19:42:09.724+02:002016-10-23T19:42:09.724+02:00Hey just wanted to say I think your talented build...Hey just wanted to say I think your talented builder and look forward to reading more of your site<br />Now with that said where can I buy these tubes at ridiculous prices? If I can find them for a buck each I would buy 100<br /><br />LawrenceAnonymoushttps://www.blogger.com/profile/06059118567221463718noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-4109009642846255362016-07-01T07:22:55.909+02:002016-07-01T07:22:55.909+02:00nonoVinylSavorhttps://www.blogger.com/profile/03255472557028244395noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-48644879249147454992016-07-01T02:39:44.008+02:002016-07-01T02:39:44.008+02:00Thomas might there be sonically interesting line l...Thomas might there be sonically interesting line level applications for this tube at much lower voltages? Maybe 250v based on your curves?rhchttps://www.blogger.com/profile/07653120099159280109noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-87460213343484352612016-01-12T23:01:29.217+01:002016-01-12T23:01:29.217+01:00None I am aware ofNone I am aware ofVinylSavorhttps://www.blogger.com/profile/03255472557028244395noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-85095464839161590492016-01-12T22:18:26.907+01:002016-01-12T22:18:26.907+01:00Does exists similar, in small package, weaker?Does exists similar, in small package, weaker?peterhttps://www.blogger.com/profile/05578320121059479355noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-9737727346844565972015-04-12T20:49:25.828+02:002015-04-12T20:49:25.828+02:00Hi!
Please keep me updated about your results if y...Hi!<br />Please keep me updated about your results if you try this<br /><br />best regards<br /><br />ThomasVinylSavorhttps://www.blogger.com/profile/03255472557028244395noreply@blogger.comtag:blogger.com,1999:blog-2098337119765190876.post-55119813756864746662015-04-12T20:15:10.738+02:002015-04-12T20:15:10.738+02:00Hi Thomas.
This tube looks like a good candidate t...Hi Thomas.<br />This tube looks like a good candidate to direct drive an electrostatic speaker. Maybe just the treble panel of a hybrid ESL. A differential SRPP pair consisting of four tubes per channel with +/-1200V bipolar power supply might do the job. Filaments will need separate floating power supply. I have been planning to build a direct drive electrostatic headphone amp for Stax. I had 6S4 or 6AH4GT in mind. 6HS5 might be easier to implement with just two stages and enough gain for feedback. Wasimnoreply@blogger.com