Ron’s New System

[crosswind]

Thank you for this report on all points!

I don't know if Anette's song "Liberty" is considered by music aficionados to be an example of vacuous "audiophile music," but I don't care. I love the song musically and lyrically. I listen to it all the time. I would love to interview Anette on Zoom for Masters & Makers!

Thank you for mentioning me to Bent!

Hi Ron,

Picking up on a year old answer where you wrote “I would love to interview Anette…” Well, I remembered that and today I ran into Anette at Oslo hifi show and asked her if she could consider doing an interview and she sounded thrilled about it, so if you still would like to do the interview, Anette gave me her contact info so you can reach out.

Besides asking I also bought a signed copy of “With every cell” and took a selfie with Anette. She’s really super nice.

 

[Ron Resnick]

Hi Ron,

Picking up on a year old answer where you wrote “I would love to interview Anette…” Well, I remembered that and today I ran into Anette at Oslo hifi show and asked her if she could consider doing an interview and she sounded thrilled about it, so if you still would like to do the interview, Anette gave me her contact info so you can reach out.

Besides asking I also bought a signed copy of “With every cell” and took a selfie with Anette. She’s really super nice.

View attachment 147856View attachment 147857

That's completely amazing! I will PM you! Thank you very much!

 

[Ron Resnick]

Today I removed a second pair of Lutron Maestro RF dimmers from the room area.

 

[Ron Resnick]

Tonight Don, Tinka and I saw Franz Ferdinand at the Wiltern Theatre in Los Angeles.

 

[Johan K]

Today I removed a second pair of Lutron Maestro RF dimmers from the room area.

What is the reasons for this?

 

[bonzo75]

What is the reasons for this?

Electrical noise added by dimmers into the system

 

[Holmz]

Today I removed a second pair of Lutron Maestro RF dimmers from the room area.

Same room and same circuit?
Or same room and different circuit?

What was the result sir?

 

[Ron Resnick]

same room and different circuit?

yes

What was the result sir?

Very slightly less noise through the loudspeakers.

The bigger drop in noise resulted from removing the first Lutron RF Maestro I had removed.

 

[Holmz]

yes


Very slightly less noise through the loudspeakers.

The bigger drop in noise resulted from removing the first Lutron RF Maestro I had removed.

I had an old avalanche transceiver. (the european ones were at 457 and the US ones at 2275 Hz.)
The now long outdated US frequency of 2275 Hz is some number of harmonics from 60 Hz. Thirty-something

While I generally am suspect about the bitching about dirty power and like, I have used it for working out noice problems in the distant past.
When one holds it up to a switch or outlet, what is coming through the ear piece sounds like bacon frying as the thing approaches a noisy dimmer or even an outlet with nothing plugged in has noise emanating from it..

It was a great tool for things like that, but there are probably other ways to find offending switches and some qualitative listening in on the AC noise.
Quite impressive really.

 

[Ron Resnick]

The old and simple amateur radio trick is to take a handheld AM radio, tune between broadcast stations, and hunt for noise by waving around the extended whip antenna.

 

[Ron Resnick]

 

[DasguteOhr]

Electrical noise added by dimmers into the system

LCN-FI1 – LCN.eu

www.lcn.eu

Good filtering effect with electronic dimmers, with transformer dimmers a simple interference suppression capacitor usually helps.
It attenuates the harmonic interference. The size of the capacitor varies depending on the load.

 

[microstrip]

The old and simple amateur radio trick is to take a handheld AM radio, tune between broadcast stations, and hunt for noise by waving around the extended whip antenna.

A good trick in the old days, but today we are looking for noise up to the tens and hundreds of MHz, maybe GHz. The fast commutation of electronic switching devices and digital electronics generate high frequency harmonics. Although some analog fundamentalists do not believe in the Nyquist (sampling) theorem, they are affected by its reality!

A word of cautious - many filtering devices supress noise injecting it in the ground line. Considering the involved frequencies the ground impedance is significantly higher than its ohmic resistance, probably this noise will be injected in our systems through the mains ground line.

Significant part of the textbooks on grounding and interference had to be re-written in the 2000's because of the digital revolution. Unfortunately many high end audio designers who create excellent sounding equipment still ignore the new versions.

 

[Ron Resnick]

Electrical noise added by dimmers into the system

I actually think it was RF, not electrical, noise.

 

[Ron Resnick]

 

[Ron Resnick]

 

[AudioLibertarian]

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Oh dear! These must be some of the best (if not the best!) single ended amps! Congrats! These amps are just extraordinary! Has taken awhile for you to finally get them. And in their Litz version as well to boot! Be advised that these take a VERY long time to fully break in, at least a year, or so even longer from my extensive experience with their previous versions. 300-500 initial wave, and on, with the finer gradations as time passes. These are like the finest Barolo wine....

 

[Ron Resnick]

Out of the box impressions:

-- bright, thin, brittle, edgy (think bad, early solid-state) (tubes and capacitors are new)

-- noticeably more resolving than JA100s

On Jadis I don't think I ever heard the echo or decay (or whatever that is) on the very first drum hits (or whatever they are) at the very, very beginning of Lyle Lovett's "North Dakota." Now that echo is very obvious! And I have played that song many dozens of times.

I am very accustomed to the Jadis gauziness. This sounds more "professional."

 

[AudioLibertarian]

Once they break in they have a very musically NEUTRAL sound. That term has been wildly overused in out hobby, but the PFF-100s are as neutral tube amps as you going to get. However, the texture of the harmonics is very "proper". They are different from the VTL MB 185 Mk3, and Jadis 120. IMHO of course. Jadis is very charming.

 

[AudioLibertarian]

Also, very important to check for the possible bias drift after a week after first turn on, and then in another couple of weeks, and then every couple of months thereafter.