Resistor Sound Quality?

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I never went there, but I did sample a Col. Sanders in KY very near to where he lived. It was just fine! Just like it had been 10 years before.
I'm sure that the Claudia Sanders Dinner House is comparable to a CTC Blowtorch, and the Col. Sanders outlet that I tried in 1973, was comparable to Parasound products that I design.
 
Purely Resistive Attenuation

For most preamps, the volume control (resistors) do the most harm to the signal. This damage is then passed on in full by the output amplifiers in the line stage to the power amp. The typical passive style volume control reduces the overall noise level of the system by attenuating the distortion from the source components and the line stage, rather than just the source components. (With most conventional systems an amplifier input level control should be set lower than full in order to reduce unnecessary amplification of noise before it.)

If you don’t have an input level control at the amplifier, this noise floor advantage may be realized by using the preamps line output direct into a passive attenuator unit. However, the impedance limitations of the typical high-end volume pot cause poor reproduction of dynamics and high frequency loss especially when used as a passive unit.

The ultimate solution to this is a volume control built with Vishay® S102 resistors which provide a perfectly resistive load with virtually instant rise-time. The Vishay presents an input resistance rather than input impedance eliminating all the issues and most of the formulas associated with passives. Such a perfect resistive load, also allows for lower attenuator values and amplifier load values which also help with noise (even lower values possible if amps feature Vishay S102s for the load.)

A volume control built with Vishay S102 is an expensive proposition. Enter the Placette Remote Volume Control with 125 steps, perfectly balanced at each and every delicate change of volume. A brilliant design which uses relays to achieve these steps with only 20 resistors per channel. At $500 or so used or $1000 new it is a brilliant addition to most systems.

Sonic benefits of unchaining your system with a perfect resistive load attenuator:
1. Reduction of noise due to any unnecessary line stage gain.
2. Elimination of subtle high frequency distortion inherent with all other types of volume controls
3. Better treble extension than other passive designs
4. Unsurpassed deep bass clarity and dynamics.
5. Further noise reduction possible if amplifiers optimized to lower loads.

With a conventional style volume control in a system, the designer/tweaker cannot fully evaluate the sound of resistors due to the pernicious affects in bass clarity and treble purity implicit with the typical attenuator.
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The evaluator is also likely to have some extra noise without some kind of attenuation right before the amplifier.

Please tear the above assertions to shreds. This is merely my best attempt to understand the “Placette” effect (Vishay S102 perfect resistive load) in my own system which completely outclassed my previous Daven 18 step pot despite going from a 15k load to a 9k load.

I’ll add that some contend nude Bulk foils are inferior to the S102 due to some subtle treble distortion from the lack of encasing.

Vishay’s own discussion links in wonderfully to negative feedback voltage divider discussion back earlier in the week:
http://www.vishaypg.com/docs/49997/49997.pdf

Also some further insight on critical resistors with schematic and discussion at Audiogon of all places (loads of misguided cork sniffing too):
https://forum.audiogon.com/discussions/top-resistors

Some disagree strongly about Nude bulk foils and only like the S102, but some further insight:
Aria Audio

A further note, for some, going fully passive and eliminating a line stage may be possible, but sometimes source components don’t have the dynamic voltage capability to handle the amplifiers. Placette offers perfect realizations via buffers with higher input resistances and very, very low output impedances. (Sorry for pumping up this brand, but the marketing/website and reviews in the press are very weak.) DIY buffers would also work and if my own line stage's carcass could hold the innards of a Placette, I'd have serious thoughts about transplanting the Placette.
 
Perfect realizations? Really. Not a single measurement on their website, just lots of airy fairy flooby dust to make people think they have to have this. You'll forgive me if I don't rush out and buy one.
Its pretty flooby I admit, but it was like a bomb went off in my system with the increase in dynamics. I expect the differences must be measurable somehow, but perhaps science has not caught up. I like to have explanations for what I hear and the fairy floob is all I got. The offer free 30 day trials for the truly skeptical. :xeye:

I see definite theoretical advantages to the perfect passive. I've done all the passive calculations and it shouldn't work in my system. Roughly 1700 ohm output impedance from Bendix 6900 into 9k passive (probably net 8k with amps). For fun I think I should drop the value of 200k load resistor in xover and 1 meg load resister on tweeter amp. How low should I go? (Can't go after 250k carbon wiper on midrange amp with fixed resistors just yet, because likely reworking tweeter amp for more power.)
 
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I never went there, but I did sample a Col. Sanders in KY very near to where he lived. It was just fine! Just like it had been 10 years before.
I'm sure that the Claudia Sanders Dinner House is comparable to a CTC Blowtorch, and the Col. Sanders outlet that I tried in 1973, was comparable to Parasound products that I design.
My stomach now wants KFC (which I never eat). Definitely low fi now. Licking fingers shortly.
 
I asked my son once where he wanted to stop for food.
He picked KFC, and ordered me a €19 bucket of chicken.
After the third bite, I returned the contents of my mouth to the bucket.

Never again will I offer him the choice, nor ask him to order me something.
$/ounce, that may have been an exclusive tête-à-tonneau.
 
I asked my son once where he wanted to stop for food.
He picked KFC, and ordered me a €19 bucket of chicken.
After the third bite, I returned the contents of my mouth to the bucket.

Never again will I offer him the choice, nor ask him to order me something.
$/ounce, that may have been an exclusive tête-à-tonneau.

I'm in Nassau at the Atlantis Resort, Nobu has Waygu at $39 an oz. All the cabs here sport an I love KFC sticker.
 
I should point out there are many who enjoy KFC products. Perhaps because I did do the sound system for the KFC YUM arena. Also I can recomend the local beverage (Bourbon) and where I stayed for the project, the Brown Hotel.

In addition the best athletes in the world compete in Louisville. Bred for hundreds of generations just to run fast.
 
FWIW I tried KFC *once* .
Or less, because halfway during the first piece I had to spit what I was still chewing and found impossible to swallow.
My lips, fingers, but even worse the insides of my mouth were covered with *grease*.
Ugh !!!!

Ofn course, those used to grease will find it great, so to each his own.

Mind you, I *do* eat chicken, but I pull all skin, operate it for extra 5 minutes with a scalpel sharp knife (no kidding) , then "massage" it with spice-of-the-day , whatever I fancy, brush it with olive oil and then broil it.

Well done, yet juicy, I'm careful to seal it well.
 
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