[wuwhere]

IMO, 5W tube amp is not a lot. I'm using a speaker tube amp with four 6550 output tubes, 2/channel.

 

[Chris J]

I was referring to determining the power output of the 5W tube amp.

What can I say?
Personally,
I must admit to being extremely bored by the Damping Factor thread.

 

[Armaegis]

No it isn't witchcraft, read my profile.
It's alchemy.
There's a difference.

 
And I'm a metallurgist... we should be creating the next greatest single crytal neutrino enriched gold embizzled piezo ceramic silver nanowire. With sprinkles on top.

 

[Chris J]

And I'm a metallurgist... we should be creating the next greatest single crytal neutrino enriched gold embizzled piezo ceramic silver nanowire. With sprinkles on top.

So you're a metallurgist, I guess that makes you the "In house alchemist"
Point taken.
Henceforth we shall refer to Electrical Engineering as "Voodoo".
I shall modify my profile accordingly.

 

[Armaegis]

So you're a metallurgist, I guess that makes you the "In house alchemist"
Point taken.
Henceforth we shall refer to Electrical Engineering as "Voodoo".
I shall modify my profile accordingly.

 
I suppose on a technicality I sort of am... though I'm really more an an epitaxial* growth and precipitation specialist rather than pure alchemy

 

Spoiler: Warning: Spoiler!

* no really, my thesis has all sorts of fancy words like that which deal with the microstructural formations in metals.

 

[Chris J]

I suppose on a technicality I sort of am... though I'm really more an an epitaxial* growth and precipitation specialist rather than pure alchemy

Spoiler: Warning: Spoiler!

* no really, my thesis has all sorts of fancy words like that which deal with the microstructural formations in metals.

Power engineers like to say "power factor" because "phase angle" is too difficult to pronounce!

 

[Armaegis]

Power engineers like to say "power factor" because "phase angle" is too difficult to pronounce!

 
Imaginary numbers are voodoo!
 
Ultimately, I blame Tesla for all this ridiculous AC nonsense. (not too sure who I get to blame for the backwards pos/neg sign convention when dealing with electron flow)

 

[Chris J]

Imaginary numbers are voodoo!

Ultimately, I blame Tesla for all this ridiculous AC nonsense. (not too sure who I get to blame for the backwards pos/neg sign convention when dealing with electron flow)

Imaginary numbers are a fallacy.
Have you ever seen one?

 

[Armaegis]

Imaginary numbers are a fallacy.
Have you ever seen one?

 
Only in pairs...

 

[robrob]

 we should be creating the next greatest single crytal neutrino enriched gold embizzled piezo ceramic silver nanowire.

 
I bet that would sound sweet.

 

[Chris J]

Only in pairs...

In pairs?
Seriously?
If you call something real that has an imaginary friend "a pair".....you need help!
:rolleyes:

 

[Armaegis]

In pairs?
Seriously?
If you call something real that has an imaginary friend "a pair".....you need help!

 
I'm a bit of a square like that

 

[zilch0md]

   
I suppose on a technicality I sort of am... though I'm really more an an epitaxial* growth and precipitation specialist rather than pure alchemy

 

Spoiler: Warning: Spoiler!

* no really, my thesis has all sorts of fancy words like that which deal with the microstructural formations in metals.

 
I'd love to hear your take on Ohno casting.  The explanation I've always heard (paraphrasing) is that the highest frequencies arrive at the same time as the lowest frequencies because, with Ohno casting, the highs cannot take longer paths to get from the amp to the transducer than do the lower frequencies - as they can when there are lots of cracks and fissures in the metal, that can be "explored" only by the higher frequencies.  
 
None of that makes any sense to me because of the wavelengths involved...  Like... Just how large are those cracks and fissures?
 

 
Mike 

 

[Armaegis]

   
I'd love to hear your take on Ohno casting.  The explanation I've always heard (paraphrasing) is that the highest frequencies arrive at the same time as the lowest frequencies because, with Ohno casting, the highs cannot take longer paths to get from the amp to the transducer than do the lower frequencies - as they can when there are lots of cracks and fissures in the metal, that can be "explored" only by the higher frequencies.  
 
None of that makes any sense to me because of the wavelengths involved...  Like... Just how large are those cracks and fissures?
 

 
Mike 

 
You've got the right idea in the bolded part there, sorta. There's a schiitton of pseudoscience tossed about and I want to be careful not to get dragged into "sound science"... but here's a overview:
 
- a lof of the ideas of differential scattering (ie: different frequencies will diffract at different angles, thus take longer/shorter paths to the destination) are valid... but do sorta require that the impediments in question are within an order of magnitude of the wavelengths
- nevermind that this scattering thing is kinda based on the idea of a particle zipping from source to destination, which is really not how electricity works... a wire is more like a hydraulic tube with your source acting as a piston (fun thought experiment: now think of the whole voltage amps vs current amps as a pressure vs flow rate thing and imagine what kind of a change in architecture that entails)
- grain boundaries and impurities do affect overall electrical conductivity, sorta like dirt or obstructions
- does this affect "pressure" from source to destination in the audible frequency range? well that's a debate for sound science. I think I can safely assert that it does interfere with the ultrasonic garbage from DSD though
- as a whole though, a high purity low grain boundary metal is good, if nothing else strictly from the perspective of resistance to oxidation/corrosion
- except your voice coils aren't made from it
- nor the circuit traces in the amp, nor the leads on any of the components, etc

 

[davidsh]

I suppose what you mean by pseudoscience is 'science' that can't be disproved per se?
 
Anyway, can't agree more though some actually use silver cabling etc. for amps. I consider much of the talk about sound differences in good measuring solid state amps and DACs as pseudosicence at best, often just subjective impressions.