heh. Smoky🙂 Its RCA Black anode matched. well I think I have some 2-3 hundrish 6V6es laying around. What do you suggest?
I think Im gonna work me down on the current scale and skip the opt cap for a tranny instead. Theres some nicer tubes growing in 1000th around. I'll throw it to you if you catch😉
/S
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Mmm. Rail ripple is there. But also grounding and microphonics actually. I tried a double inversed 2007 to ground but it didnt match with my other equipment. This is a start for the feeling of sound. Impedance is the cruical thing for sounds in in pre's. I also do AC heating now. I will work it thru.
Brummer is to ground by 2 100 k to CT, I'll see if lift goes tomorrow. I like AC. Its also touchy sensitive so I'll have a look if i have a minute tomorrow.
Microphonics are minimal on mine in CF mode with the new Tungsol. Try some elastic rings between bases and chassis. Some NOS are looser than others so swap some to see which one is quieter. Can it be the chokes pick some 50Hz field also? Maybe from the AC heater cable runs.
Its all very rough now, but as I like the sounds I will go down on it. OPT signal has long antenna wires. As usual I started with lowish C in the filters, usually it needs to be worked up in SE.
I will start measure the rail ripple tomorrow. But, as I said, in anode followers we usually try to filter the upper rail. But think about it, we have actually 2 rails, plus and gnd. And here we're taking signal from just above gnd rail.
I will start measure the rail ripple tomorrow. But, as I said, in anode followers we usually try to filter the upper rail. But think about it, we have actually 2 rails, plus and gnd. And here we're taking signal from just above gnd rail.
When you will sort out the build its very clean smooth and rhythmic. My bro run some ''new disco'' style mixes on digital recording he did off his mixer at work today and it pumped.
Mine was very quiet first go round. Not until i tried tube rectifier did i have trouble, but i am a greenhorn. I had to wipe off my tablet screen when i saw that tube collection. Mine are nos rca. Tungsol sounded good enough for me to warrant the cost. If Salas' RIAA imoresses like this pre, he will fill my entire chain, with the exception of the main amp.
I dont know about your experience, and even less about your febless but just that is to my experience the hardest to accomodate with the other sound we all like. If you dont have the punch, when the stick hits the bass drumskin and when the guitarrist bends the strings... where are you in softish voices anyway.
CFs usualy didnt get me anyway b3, I'm to unexperienced, but I really think stong tamed CFs is the ****. I have listened to so many preamps to so many poweramps and all I can say is. get a decent preamp b4 you put the money elsewhere. Imp is the ****.
/S
Buzz
then you'll ask for Ultrasymmetry toob stage
and then we'll make Mini XS amps
I am trying to stay away from these damn glow plugs, but an LED just doesnt have the same allure. I have made the commitment that a tube power amp has to be the last thing, cause I want to do it right, which probably means dropping big coin. Tube Xs, shouldn't we call it Xs' daddy😀
Pleas understand Stajo and ZM, that I am official US part disposal facility, in case you had any "outdated" parts. Hell, I'll even take new parts....😉
Well Buzz, if things were sorted out by the chisel, why dont go back? Changing your setup to "better" parts can get you all sorts of problems. Oscillation is one of a biatch. She can show up anywhere you least expect.
As for the goodies, well they are here in sweden, mostly on a boat actually. But its diy friendly prices if you miss anything.
/S
As for the goodies, well they are here in sweden, mostly on a boat actually. But its diy friendly prices if you miss anything.
/S
Me too. Nice to have used my CRO again now the DSO is gone. Will retaliate with a 50.000 updates per sec one soon though.
Way too many acronyms at once. What is strange is that I understand. I like it when this thread lurches back to life. I believe folks are missing this one, but I am just hyperactive greenhorn.
Uff. Its not an easy task to get 6,3 ripplefree vdc from 6 vac. But it can be done 
Low drop shottkys and a C-L-C-R-C-R-C😱
It was for testing if ac on filaments was the bad guy. Seems like it wasnt😡
Well, I'll ad some more capacistance to the railfilter, cause I dont think I will get voltage enough from this lil tranny with an SSHV. But first I will enjoy Marleys Legend. Ripple is inaudiable in the sofa, its just with the ear in the cone.
Have a good weekend.
Staffan
Low drop shottkys and a C-L-C-R-C-R-C😱
It was for testing if ac on filaments was the bad guy. Seems like it wasnt😡
Well, I'll ad some more capacistance to the railfilter, cause I dont think I will get voltage enough from this lil tranny with an SSHV. But first I will enjoy Marleys Legend. Ripple is inaudiable in the sofa, its just with the ear in the cone.
Have a good weekend.
Staffan
