I've tried ferrite clamps on my power cables and I've used SMD ferrites on input stages.
I can report nothing but good sound, and in the case of SMD ferrite beads on the inputs, zero mobile phone hopping when I make a call close to my system (one of my preferred tests).
This 'ferrite destroys the sound' is a myth and total nonsense.
I can report nothing but good sound, and in the case of SMD ferrite beads on the inputs, zero mobile phone hopping when I make a call close to my system (one of my preferred tests).
This 'ferrite destroys the sound' is a myth and total nonsense.
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My cynical side tells me that the big-heartedness simply makes it easier to extract the maximum amount of information, which may be an advantage at some stage, without appearing to interrogate. The most Godforsaken examples don't "lean" toward drink; they positively fall in that direction!
Having been born there and spent my first 40% of life living among them in both Dublin and in the "country", they are in my experience for the most part good people - but deprivation and boredom can cause problems in any community whatever the nationality.
James Joyce wrote a lot of pretentious crap ........ among even more very precise observation of the human condition (as he had experienced it).
Having been born there and spent my first 40% of life living among them in both Dublin and in the "country", they are in my experience for the most part good people - but deprivation and boredom can cause problems in any community whatever the nationality.
James Joyce wrote a lot of pretentious crap ........ among even more very precise observation of the human condition (as he had experienced it).
I think that puts you and Max in a class of two!
Ed mentioned them a few pages back but were lost in the noise.
You don't 'filter it off'. you give it an alternative path to ground that is lower impedance. Slamming caps on may not give you the effect you want.
Bypass caps are to ground in this case, and signal caps are in series. You got the two mixed. And filtering off is perfectly fine to say because you've filtered it off of the signal, which is doing what you're saying; it's just that you're convoluting it with the who-gives-a-rats-***-obvious. But again, I've found bypass caps aren't recommendable.
A nearly deaf person can hear how a ferrite clamp is bad on their IC's. If this wasn't true then every high end cable in existence would take advantage of this extremely cheap part. It's not unique or isolated to Max and I. Besides I'm not sure if Max believes ferrite is fine in the applications I regularly use it in.
"A nearly deaf person can hear how a ferrite clamp is bad on their IC's. If this wasn't true then every high end cable in existence would take advantage of this extremely cheap part." (my italics)
Such a belief is extremely naive!
Most "high-end (spit!) stuff has nothing to do with engineering. It is fashion.
Such a belief is extremely naive!
Most "high-end (spit!) stuff has nothing to do with engineering. It is fashion.
Yeah that might not give the preferred path to ground that the radio frequencies want. You need to have a low impedance at RF to ground and high into the system. The sort of inductance that a capacitor lead has can completely banjax your filter. And of course despite the horror from certain corners a series L can help significantly. All well known outside of high end audio 🙂
So, I suppose I'm nearly deaf, using ferrites on each and every cable in my system. Cannot hear or measure any degradation in the audio bandwidth.
Excuse me for saying, but that is a GEB argument.
(the exact same gunk argument as used a quarter century ago, by folks who had zero issues with bipolar-input opamps and/or mylar caps in general)
With the correct selection of core material and size, on low level signal apps, I have not measured any distortion caused by my samples here. Now speaker cross-over cores is another story, though.
THx-RNMarsh
THx-RNMarsh
Or some honest tests done at home to see if what you're hearing stands up to any sort of scrutiny?
How the hell can something with less than 0.1dB (and even lower in the case of SMD ferrites designed to block RF gunk in the hundreds of MHz - the type that can cause 'burping' on an audio system) and perhaps 0.5 degrees of phase shift be audible? Oh, and on an AP test it shows 0% (zero percent) added distortion.
Ditto ferrite clamps on power cables - be the PSU linear, SMPSU or plain vanilla unregulated.
Show the numbers, some graphs, two recordings - one with and one without - that prove this point.
I suspect the real reason this has now emerged is because good engineering in todays noisy RF environments requires that some basic precautions are taken but a small cabal of GEB decide its not 'pure' anymore and we get another preposterous claim being made. Like feedback, solid state, op-amps, myrtle blocks and all the other gunk dug up and floated as 'serious audio'.
Ditto ferrite clamps on power cables - be the PSU linear, SMPSU or plain vanilla unregulated.
Show the numbers, some graphs, two recordings - one with and one without - that prove this point.
I suspect the real reason this has now emerged is because good engineering in todays noisy RF environments requires that some basic precautions are taken but a small cabal of GEB decide its not 'pure' anymore and we get another preposterous claim being made. Like feedback, solid state, op-amps, myrtle blocks and all the other gunk dug up and floated as 'serious audio'.
How could it be otherwise, at audio frequencies with such a low impedance added in series and so little currents.
Even on my loudspeakers lines, I have not measured any increase of distortions and not heard negative effects neither.
The real question, for me, is: Does it really helps to filter enough RF ?
I can only envy you. Call me a petrol head, but to me the sound of a healthy (well prepared and seviced) engine at 8.000 rpm is a symphony, Also a bit sadistically amusing, it usually sends the mere mortals around you scurrying for shelter. Even a 1.6 litre one, let alone some big bruiser V8 monstrosity.
The best one I ever heard was a Ford Cosworth V8 Formula 1 engine a long time ago. Unblievable sound, at some I think 9.000 rpm. Just hear it once at close quarters and you're hooked for life, nothing else will ever do after that. With respect to everyone, but nobody does engine sound like the Italians, with them it has to all fire and brimstone or why even bother.
Now Now Dvv...they really aren't that much if a monstrosity.
Say with something like a Chevrolet 454 cubic inch engine, highly tuned
and serviced....
...As you were, I stand corrected.
You are very right, a Big Block Chevy, it is a monster.
Not much in the world can stand up to it either.
We've got racers and ricers on this side of the pond and
with their delicately tuned Alphas, Ferrari's, Lamborgini's
to keep up or function properly we have to let me challenge
with a start speed at around 30 - 60 MPH so they don't self destruct.
Once you experience the power and torque of a Big Block you never go back.
The Big Blocks were born, bread and tweaked for High Performance
and fought each other at the CAN-AM series...the likes of Jim Hall
and Bruce McLaren (RIP) and other innovators.
For these engines it's the symphony in the lower registers that
enable you to "feel" the music. 🙂
Ferrite bead effect on Class-D amplifier audio quality
http://tinyurl.com/he2mjl6
OK, 8 Ohms is not your usual load encountered between units at 'line levels', but amplifier in test was linear one, not Class-D. Fire away, guys 😉
http://tinyurl.com/he2mjl6
OK, 8 Ohms is not your usual load encountered between units at 'line levels', but amplifier in test was linear one, not Class-D. Fire away, guys 😉
As I pointedly indicated, in speaker lines, it is a different story. In a nut shell.... it is the high current thru the winding's wrapped around the core. However, the core materials I mentioned a few days ago wont be an issue in speaker lines either.
Maybe some of you remember the speaker brand called Velodyne. They were making full range speakers for awhile (DF661). The designer wanted the lowest distortion possible and had worked on his drivers to do that. I told him to try the others X-Over cores mentioned before and he did and was happily surprised that he measured less acoustic distortion from his drivers. And, he said those cores were cheaper than the ones he had been using. So, he gave me a pair of his Df-661 which i still have.
THx-RNMarsh
Maybe some of you remember the speaker brand called Velodyne. They were making full range speakers for awhile (DF661). The designer wanted the lowest distortion possible and had worked on his drivers to do that. I told him to try the others X-Over cores mentioned before and he did and was happily surprised that he measured less acoustic distortion from his drivers. And, he said those cores were cheaper than the ones he had been using. So, he gave me a pair of his Df-661 which i still have.
THx-RNMarsh
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