Good supply for preamp, Comments?

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Peter Daniel said:
This was my impression.

then you are mis-impressed, 🙂

Peter Daniel said:
For someone who treats resistors as electrical parts only, without any consideration for possible sonic aspect, will talk about bypassing caps in a similar way, from measurements POV, concentrating on best measured performance but without any regard as to sonic aspect again.


sounds like you are mad at the wrong person, Peter. Go back and look at my posts and find out if I said that that resistors make no possible sonic difference.

To save you time, I said explicitly that I believe different parts (including resistors) make a difference in the end.

What I am questioning is if your ears can tell that difference, 🙂
 
Peter Daniel said:
doing their own R&D's. 😉


I would think that people here do a lot of their R&D, except hat some of us prefer to start our R&D with a goal and base it on sense ans sensibility.

dipping our amps into non-compressible liquid to damp unknown vibrations isn't one of those R&D efforts, tho., 🙂
 
analog_sa said:
decoupling". Looking at the PS of a PH3 one sees a 470uF in series with a parallel combo of a 2.7uH and 54R9. The resistor is presumably to damp the inductor and the result is a predictable impedance behaviour (rising) at high frequencies. All this is bypassed with a 2,0uF and 0.01uF. Seems like a reasonable way to achieve bypassing and at the same time decrease the sonic signature of the electrolytic at HF.


Part from PS schematic of AR preamp LS10
 

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millwood said:


sounds like you are mad at the wrong person, Peter. Go back and look at my posts and find out if I said that that resistors make no possible sonic difference.

To save you time, I said explicitly that I believe different parts (including resistors) make a difference in the end.

What I am questioning is if your ears can tell that difference, 🙂


I'm not mad, I'm just making an observation and presenting my view.

Dipping the chip in a liquid was just a start of a concept which, although ended somewhat different, wouldn't be possible without the thought of using liquid. I'm working on a prototype right now. No matter how crazy the idea might seem in the beginning, you shouldn't prejudge it or disqualify it right from the start (without seeing the end).
 
Peter Daniel said:
No matter how crazy the idea might seem in the beginning, you shouldn't prejudge it or disqualify it right from the start (without seeing the end).


so is my gold bar heatsink idea, 🙂

I think our present understanding of damping is pretty mature. so to find it faulty is unlikely.

But that's not to say that it is impossible. I just think your resources can be better spent elsewhere.

But what does a dumb banker know about audio? 🙂
 
I think that as moderator, I should say now that this kind of discussion isn't really supported on diyAudio Forum, so please everybody get back to the original subject and stop those silly games. I will for sure refrain from that and if I engaged previously, it was only caused by my weakness and occasional urge for joking. 😉 If I offended anybody again, I apologize. And I really mean it.
 
fdegrove said:
Hi,



Does your bank support audio companies, I mean the one that forge ahead in High-End territority?

Cheers,😉


yes and no. someone in another office made a sizable investment in a company that owns and still markets some "fallen angle" type of speakers, and now is largely a marketer of low-end audio products.

where I work, we have no involvement directly with audio. I do however sit on the board of a semi fab that does mostly mixed signal wafers. and if you want, they would be happy to custom fab some wafers for you, 🙂

it would be hard pressed to find any investor in my business (private equipty) who would invest in high-end audio tho. Ripplewood owns D&M (Denon and Marantz) and they are one of the better investors in distressed situations - and the fact that they are involved with a pretty healthy name like Denon should shade some light on how the whole high-end audio segment (and consumer electronics in general) is perceived by the financial community.
 
millwood said:

that's why I am one dumb banker and you aren't, 🙂

I'm sorry, I was waiting for the answer to the quiz here.

and speaking of dumb bankers, I must fess up, I have done my spin there -- iinvestment banking, trading, origination ,it's what happens when physicists can't find jobs -- they turn to financial derivatives -- in fact one of my profs, the late Fischer Black would have gotten the Nobel had he not died of a brain tumor. I took both Fischer and Myron, along with Merton Miller, Gene Fama, George Stigler etc.

The Black-Scholes Option Pricing Model was priced using heat transfer functions. Can still do the cumulative probability distribution functions in my sleep! (Fischer Black majored in physics at Harvard btw.)

Got the opportunity of working with a physicist who designed the Saturn V booster at one time -- he was analyzing derivatives on mortgage securities.

Oh, and physicists like music, like to play bridge, like to drink and like to smoke cigarettes. Perhaps they are genetically related to Belgians!

so, let's get back on track, I am all ears! What is the solution to the problem. Boys, sheathe your spears, get back on track !
 
jackinnj said:
The Black-Scholes Option Pricing Model was priced using heat transfer functions.


that's correct.

jackinnj said:
Can still do the cumulative probability distribution functions in my sleep! (Fischer Black majored in physics at Harvard btw.)


you mean binomial distribution? how about truncated one? or American options?


jackinnj said:
Got the opportunity of working with a physicist who designed the Saturn V booster at one time -- he was analyzing derivatives on mortgage securities.


Is there any other ways of doing that? PSA? Unfortunately, quants are out after the LTCM fiasco.
 
Hi,

Fellows...binomial or dampened...can't we stay on topic for a sec?

Just a little self-government won't hurt, would it ?

so, let's get back on track, I am all ears! What is the solution to the problem.

A good place to start would be to define a typical load and take it from there.

No idea how you guys usually work but I usually work backwards,i.e. I define my goals first and start from the tail working my way through up to the mains...

Hope this helps,😉
 
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