audio-talk

What am I missing?

Don't know anything about these Tentlabs, what's so special about them?


That wasn't a 'sarky remark' btw

Ok in Duncan's PSU 2 270-0-270 volts @0.2A set 10 % regulation gives me 320 Volts HT Same setup for 320-0-320 @ 0.2A set 10% regulation give me 387 HT Oh I see , not actually been made yet but by how much does the current Drop down from the 0.2Amps for 387 volts Well you've already done it, the sim...

Thanks for asking, well it started during Christmas hols when impossible to mail order anything specially, so I thought I should be able to throw summat together using odds and ends, but also because Nick happened to mention he once made a discrete reg like this (well not like this , probably) and i...

so does that mean that we just have different tastes,or is it that individuals hear the same sound differently? That's quite probable, depends how your brain is 'wired up' compared with somebody else. Also there's the assumption everybody's ears work exactly the same, assuming they're healthy to st...

it might be easyer to attack it from the other end and hypothesis what things like feedback might do to the signal that a 'simpler' circuit doesn't I'm been coming to learn loads of gain and feedback look good on paper but aren't necessarily desirable. Remember this article? Pretty sure somewhere i...

Took some finding! Primary : 100/127/230 V, can be used worldwide !!! , Secondaries: 2*270 V 0,2 A ; 2* 50 V 0,2 A; 6,3 V 2 A for preamp tubes, 5 V 3,5 A for rectifier and 6,3 V 7 A for heaters of output tubes. B+ secondaries can also be connected in parallel for use with a rectifier bridge. The 50 ...

Actually, a cathode cap on the first stage might help, as it is the Ra of the first valve will be much higher (see Mike's earlier thread), that will reduce the PSRR of that stage. Thought of something after I went to be last night, most if not all commercial circuits I've seen having an input, driv...

mike.. i'm with nick on this.. with pure and accurate comes more detail and musicality, a sweeter sound that when compared to what most think of hi fi.. is blandness most SE do this in spades, and we all know now the older valves seem much more rounded and detailed than new production Sorry didn't ...

0.2mA ??????????????

Assume you meant 200mA

How long is a piece of string?

Assuming 10% drop, that would make 280 Volts.

Working it backwards, 320V with no load implies the transformer o/p is 230VAC ???

140 mA?

ish.

Oh-kay, how about the 2k7 in the power supply isn't big enough, or the cap after it isn't big enough

But all that would do is show the amps frequemcy response ... simple tomes are used for testing is they are possible to analyse and make some sense off, but it seems that they are possibly too simple to actually provide any meaningfull results. Maybe we should see if we can reach a consensus of wha...

so one consensus seems to me to be that valves good (measure bad) transistors bad (measure good). I don't think that's true, both valves and transistors can be both good and bad. Where's that article Tubes Vs. Transistors http://www.milbert.com/tstxt.htm which seems to conclude the only real differ...