Hi;I am a bit confused about my heater setting options at my B7 and went through this forum without finding a clarification. Maybe you can support me with your expertise.
I have the old version with a switch and just 2 settings. One is 300b and one 101d/45.
But 45 is 2.5V and 101d is 4,5V?! Does this mean that I can use all tubes between 2,5v and 4,5v with the 101d/45 setting (KR242, Tesla AD1n,..)?
I would be really gratefull, if you could help me.
thank you in advance
In my ex GG 1.9 I used the 242 on the low voltage setting and the PX25 on the high voltage settingI have a B7 and I've been using the 45 switch only for 45's with the 101/45 switch. All other high voltages I've been using the 300b switch. I would assume you are correct that anything between 2.5 and 4.5 v would use the 101/45 switch, but best to check with Lukasz.
Thanks a lot for your feedbacks!In my ex GG 1.9 I used the 242 on the low voltage setting and the PX25 on the high voltage setting
This would mean, that for AD1n (same values as PX25) the 300B settings should be used.
…and for AD1 (similar settings as PX4) the 45 settings. This would mean that current is more relevant than voltage.This would mean, that for AD1n (same values as PX25) the 300B settings should be used.
Believe it or not, I have 7 of them. I think I must have bought nearly the world's remaining stock, LOL.Where can I get 4 and how much?
Correct.This would mean, that for AD1n (same values as PX25) the 300B settings should be used.
My other candidates for top valves are:
Visseaux TMBF1 as discussed recently.
Loewe AD1. Silky smooth, spacious, basically really nice.
Osram PX25. Outstanding with acoustic material but microphony is on the high side so use Herbie's etc. I would say if you think they don't sound a lot better than KR PX25 you have a duff pair.
Thanks, Ked.Larry to clarify the recommendation was to try the 242, PX25 and the lampi 45. Of the latter two, either can sound better in a given system. The 242 usually sounds wrong but when it is right it will trounce the other two. It is very gain dependent so since you have changed the dac you should try it again
Good old eBay is always an option"RCA/Cunningham 112A - cheap and easy obtainable." Anyone know where to got some in the UK?
"RCA/Cunningham 112A - cheap and easy obtainable." Anyone know where to got some in the UK?
At least stick those rare suckers in your Pacific for a test driveThanks, Ked.