audio-talk

Yeah, with proper beer too

Dave the bass wrote:

andrew Ivimey wrote:Monkey!

He was only musing...and you go and call him a monkey, honestly! I ask ya etc etc etc.

'Salright, I've been called worse.

Dave the bass wrote:I've been musing on Miller cap too (me and Simon are Bruvs of different Mum's).

That's not what she told me... bro.

Nick wrote:Ignore my views, if it sounds good to you it is good.

Well said Nick. Pete, don't worry about all us spoddy anoraks, every amp has some compromise or other and LW is a fine amplifier.

Yeah, best to think of it as a conversation in the pub really

Along with my ongoing musings about GM70 I also have 2A3 musings - got to do something with my RCAs. I wonder about rebuilding LW as it was the first amp I built too, but with a different driver. Don't need the gain of the ECC83 and an alternative might be interesting (and avoid the treble roll-off ...

Ah right, thanks Mike. So no grid leak but any of previous stage output resistance, any of the vol pot in series and any gridstopper and in series so accumulative. Right? Well, no, the grid leak is in parallel with the lower half of the volume pot, the top half is also in parallel via the source, S...

Ah right, thanks Mike. So no grid leak but any of previous stage output resistance, any of the vol pot in series and any gridstopper and in series so accumulative. Right?

Hmmm, right. Presumably then grid leak resistor, volume pot and previous stage ouput resistance should all be in parallel to give R?

I've been thinking about the affect of Miller Cap on high frequency cut off. Miller cap = (gain+1) x Cag plus a few strays and f-3 = 1 / (2 x pi x C x R) C is Miller cap, but what is the appropriate value to use for R? Morgan Jones talks about the output resistance of the previous stage, but what if...

Good as they are, the maximum current rating the seller gives is woefully over optimistic. When I tried them on GM-70 filament supply at 3.5A they got "Bloody Hot" :shock: I still use them on other projects but would suggest 2A was a realistic maximum. Would agree with that Phil. They run...

How much current does the Pre 3 draw? Perhaps drop the voltage with a couple of VR tubes and has the added benefit of shunt regulation?

Yes, very impressive indeed.

12GN7 would be great

It would look rather odd if I now deleted my post...

I wasn't sure what an SSR was (solid state relay!) is so I looked it up on Wikipedia and got a list of possibles, including scrotum self-repair. WTF I thought, I clicked on it and it doesn't get any better... http://en.wikipedia.org/wiki/Self-surgery

That's interesting Ray, I hadn't thought about the filter module being a problem in OBs. Steve uses his in his baffles but currently only over a relatively narrow band. His previous OBs were pretty much full range though and sounded pretty good to me. I wonder what Lowther might charge for exchangin...