jcmusic Posted June 8, 2010 Author Share Posted June 8, 2010 you right jay on the end of the day the price is what really matters and a diff.s as you said are minimal ,even not possible to spot on more of the spkrs ;-D Plus you can always tune it swapping a few prts and changing original voicing ,if you like Enjoy your amp mate - I am still in 45 KIngdom and I am happy with it . GregdeeI agree with most of what you said. Jay Quote Link to comment Share on other sites More sharing options...
jcmusic Posted June 12, 2010 Author Share Posted June 12, 2010 Ok new EML 45 tubes arrived today played them for about 3-4 hours will need more time with them but, if the first 3-4 hours are any indication of what's to come WOW!!! Is all I can say!!! Jay Quote Link to comment Share on other sites More sharing options...
gregdee Posted June 12, 2010 Share Posted June 12, 2010 Jay have you got globes by the chance ?!? I am pretty courious to hear some opinion about them ;-) will be l;ooking forward enjoy greg Quote Link to comment Share on other sites More sharing options...
jcmusic Posted June 12, 2010 Author Share Posted June 12, 2010 Jay have you got globes by the chance ?!? I am pretty courious to hear some opinion about them ;-) will be l;ooking forward enjoy greg Yes I do have a pair of RCA Globes from 1930's, I only listened to them for a short time.Jay Quote Link to comment Share on other sites More sharing options...
omodo Posted June 16, 2010 Share Posted June 16, 2010 RE : [do you know anything about the Yamamoto 45 ?] With yammy ,just let you know ,the best progress I achived till now was simple swaping rectifier tube soccket to the universal one ,which yamamoto dreated and is offering for about 60$ ,not so cheap maybe ,but it is really worth . It allow you to use 80 family in the same time with all nos telefunkens (choice deppennds on bridging resistance )which are faboulous ,amazing and undervaluated valves- which still cost nothing to get them - thanks god ;-) This socket is a good point if you use tube rectified welbornes too ,by the way ,you can swap between 4V and 5V powered valves endless- all mine are ss rectified ,as I prefer the sound of up circuit with ss. Hi Gregdee, I've also got a Yamamoto A-08S, and have one of these rectifier sockets (UX4-UB4) - but I have not installed it yet as I have not yet sourced any RGN rectifiers. If you don't mind, could you let me know which rectifiers you have tried and which you had good results with. I started looking at 1064 mesh plates but they were quite expensive, are there cheaper options that sound just as good? PM me if like. Thanks, Damian Quote Link to comment Share on other sites More sharing options...
gregdee Posted June 17, 2010 Share Posted June 17, 2010 hi Damian sorry for a delay . was trying it with TELEFUNKEN RGN 1064 and with RGN 2004. both were much better than standard 80 for my ears .both had a different sonic signature too. 1064 has smaller voltage than 2004 ,so its charecter was lighter with not so many bass in ,but it was a massive bass if compared to 80 ;-) it did not make a big difference to me when I used yammy just for hf's , but if it was covering whole range 2004 was definitelly a choice to keep.( you need to swap resistors for them ) they are are both very transparent and holographic valves - bringing unbelivalable ammount of air into the music. Also with special adapter from octals to ux-4 I tried both mullard rectifiers . GZ 34 and GZ 37. 1st had a lovely synergy with EL valves . 2nd was even better but it was drowing to much from ps as it is not designed for such a power and it was getting really hot so I removed it to avoid any damage . Also replacing yamamoto caps with Vcaps CUTF put this great amp two levels higher ,but they are a pain to burn you gonna suffer with damp of the sound 1st month and waiting next 4 for full opening ,but they are worth every penny . when you put originals back after half year you won't be able to handle them more than a day I believe. good luck with your tweaks mate . about valves - you need to look for them on europen market - they are much cheaper here . I paid 30 bucks for 1064 on flea bay ,and about 70 for 2004 if I remember well . You just need to be a bit patient and you will find your chance ,I am sure that . Quote Link to comment Share on other sites More sharing options...
gregdee Posted June 17, 2010 Share Posted June 17, 2010 here are resistors values for tfk rectifiers from the jac's web :-D Quote Link to comment Share on other sites More sharing options...
omodo Posted June 17, 2010 Share Posted June 17, 2010 Greg, Thanks for the reply. I'll keep an eye on eBay but it looks like telefunkens have gone up a "bit" since you bought yours. Have you tried any of the EML rectifiers? Jac recommended the 5Z3 mesh, but I see they have also just released an 80 mesh rectifier (this week). Thanks for the tip re CUTF, I have been thinking about trying Jupiter HT or AmpOhm copper film in this location, so thats another option. Have you also experimented with the cathode bypass on the 717A ? if so, any good results? Thanks, Damian. (apologies about lack of formatting, must be an issue with my browser) Quote Link to comment Share on other sites More sharing options...
jcmusic Posted June 22, 2010 Author Share Posted June 22, 2010 Jay have you got globes by the chance ?!? I am pretty courious to hear some opinion about them ;-) will be l;ooking forward enjoy greg Hi Greg,I just realized you were talking about the EML 45 Globes right? No I don't have those, I have the ST type solid plates. I wouldn't mind trying the globes for sure. Jay Quote Link to comment Share on other sites More sharing options...
gregdee Posted June 22, 2010 Share Posted June 22, 2010 hallo Damian sorry for delay I've seen EML 80 rect's ,but never tried them I believe they must be same significiant as just 274 were in my previous amp - they are really good rectifiers. Cathode bypas is a great solution too and works with yammy same good as with welbornes DRD's however on welbs you can easier spot it as a simplicity of circuit ,I believe ,makes it more transparent ;-D Personally I did not like jupiters as they were a bit bleary for me .I like amp ohms a lot .I did not tried them with yammy - not enough space :-D but I loved what they did bypassing output caps in my dac and used in xovers - specially there they were really shining. hear you soon mate g Quote Link to comment Share on other sites More sharing options...
gregdee Posted June 22, 2010 Share Posted June 22, 2010 Yes Jay That's what I intended to ask about ;-D I like old globes too ,but for different qualities - particularry incredibly relaxing midrange but as always with old valves they are not so exdended . Yes ,I am looking some infos about ,as it seems too be quite different valve , not just a jubellee glass shape . If you will take a deeper look you will spot that an internal design is different than corn EML and also different from VAIC 45 solid plates . Hope so ,soon somebody spot some light on :-D txs g Quote Link to comment Share on other sites More sharing options...
jcmusic Posted June 29, 2010 Author Share Posted June 29, 2010 Greg, I am considering a pair of the EML globes but, they are pricey so we will have to see. I am told they have that great midrange that we all love, not as extended highs as the solid plates and still maintain great bass. Jay Quote Link to comment Share on other sites More sharing options...
gregdee Posted June 29, 2010 Share Posted June 29, 2010 txs Jay I heard nothing till now from a any real mate yet. Formal reviews I am treating obviously as an add. Specially with this price tag. I am not suppose to get them for ,so need to look for my s/h chance to try :-) or maybe will be able to try some borrowed ones - will see !!! Hear you soon mate txs for an answer el grego Quote Link to comment Share on other sites More sharing options...
omodo Posted July 24, 2010 Share Posted July 24, 2010 I still haven't seen any reviews of the new EML globes either... canyonman did you end up ordering a pair? gregdee, I've been following prices of 1064 and 2004 on fleabay since your earlier post, and based on the crazy money 2004 mesh tubes have been going for I have decided to go with 1064, so have ordered a couple of mesh (valvo and loewe) and a pair of cheaper miniwatt solid plates (for testing). I'll let you know my impressions when I get them and make the mods. I've also sources some Elna Silmic II caps to replace the cathode bypass caps on the input stage, and a jensen 4 pole (220uF) to replace the cheap 100uF electro in the power supply. I'll let you know the outcome, I'm hoping the bigger (and better quality) 220uF will improve the bass a little, I've read the A-08 was a lot better than the A-08S in this respect, mainly due to the extra capacitance in the PS (and partly the bigger rectifier). Quote Link to comment Share on other sites More sharing options...
GBSLPS Posted July 24, 2010 Share Posted July 24, 2010 I use a Jeff Korneff 45 on my Klipsch Cornwall II's and on my KSC Fostex FE206ESR BLH with wonderfull results. I think the Korneff 45 is the best sound for the $$$$. Quote Link to comment Share on other sites More sharing options...
jcmusic Posted July 25, 2010 Author Share Posted July 25, 2010 I still haven't seen any reviews of the new EML globes either... canyonman did you end up ordering a pair?gregdee, I've been following prices of 1064 and 2004 on fleabay since your earlier post, and based on the crazy money 2004 mesh tubes have been going for I have decided to go with 1064, so have ordered a couple of mesh (valvo and loewe) and a pair of cheaper miniwatt solid plates (for testing). I'll let you know my impressions when I get them and make the mods. I've also sources some Elna Silmic II caps to replace the cathode bypass caps on the input stage, and a jensen 4 pole (220uF) to replace the cheap 100uF electro in the power supply. I'll let you know the outcome, I'm hoping the bigger (and better quality) 220uF will improve the bass a little, I've read the A-08 was a lot better than the A-08S in this respect, mainly due to the extra capacitance in the PS (and partly the bigger rectifier). No I am still on the fence, right now the solid plates are sounding so good that I don't really want to change anything.Jay Quote Link to comment Share on other sites More sharing options...
jcmusic Posted July 25, 2010 Author Share Posted July 25, 2010 I use a Jeff Korneff 45 on my Klipsch Cornwall II's and on my KSC Fostex FE206ESR BLH with wonderfull results. I think the Korneff 45 is the best sound for the $$$$.I would not argue that point with you, it sure does sound good!!!Jay Quote Link to comment Share on other sites More sharing options...
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