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Old 09-11-2020, 02:43 AM
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Default New Manley Switching Power Supplies

Interesting video on the new superior sounding Manley switching power supplies:
https://youtu.be/tdYY_hoHj80
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Old 09-11-2020, 04:35 AM
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Quote:
Originally Posted by Steady339 View Post
Interesting video on the new superior sounding Manley switching power supplies:
https://youtu.be/tdYY_hoHj80


Thx for posting

He he...Bruno Putzeys...why am I not surprised.
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Old 09-11-2020, 01:34 PM
PHC1 PHC1 is offline
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A properly designed switching power supply is not a concern. There are some class D amplifiers out there that are excellent performers and a class D in essence is one big switching power supply
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Old 09-11-2020, 02:59 PM
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Actually, it can be a concern; it certainly bears investigating, specifically with respect to high-source impedance leakage current.

So, my question for EvaAnna Manley, which I may write to her about is....do these SMPS output high-source impedance leakage current?

High-source impedance leakage current is to known travel down almost all sorts of cables and specifically adds additional noise on the ground plane of digital signals, which causes increased threshold jitter, which is audible.

Here's the problem with detecting High-source impedance leakage current: it was only discovered in Oct. 2017, and...you have to build very specialized test equipment even to detect it.

The question is: do these SMPS designed by Bruno output these leakage currents?
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Last edited by Puma Cat; 09-11-2020 at 03:02 PM.
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Old 09-11-2020, 03:35 PM
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Quote:
Originally Posted by Puma Cat View Post
Actually, it can be a concern; it certainly bears investigating, specifically with respect to high-source impedance leakage current.

So, my question for EvaAnna Manley, which I may write to her about is....do these SMPS output high-source impedance leakage current?

High-source impedance leakage current is to known travel down almost all sorts of cables and specifically adds additional noise on the ground plane of digital signals, which causes increased threshold jitter, which is audible.

Here's the problem with detecting High-source impedance leakage current: it was only discovered in Oct. 2017, and...you have to build very specialized test equipment even to detect it.

The question is: do these SMPS designed by Bruno output these leakage currents?
Sounds like Manley is using these in all their professional gear and recording mikes. I would think someone in the industry would hear it and question it but perhaps not.
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Old 09-11-2020, 04:36 PM
JemHadar JemHadar is offline
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Default New Manley Switching Power Supplies

Quote:
Originally Posted by Puma Cat View Post
Actually, it can be a concern; it certainly bears investigating, specifically with respect to high-source impedance leakage current.

So, my question for EvaAnna Manley, which I may write to her about is....do these SMPS output high-source impedance leakage current?

High-source impedance leakage current is to known travel down almost all sorts of cables and specifically adds additional noise on the ground plane of digital signals, which causes increased threshold jitter, which is audible.

Here's the problem with detecting High-source impedance leakage current: it was only discovered in Oct. 2017, and...you have to build very specialized test equipment even to detect it.

The question is: do these SMPS designed by Bruno output these leakage currents?

Why donít you ask Bruno Putzeys directly...it shouldnít be too hard to reach him through linkedin or Purifi. He is very approachable. Bart and I have had the good fortune of having spent the better part of a day with him...be prepared to have your brain melted though [emoji854]

I remember talking about power supplies with him...to summarise...a linear power supply, by its very nature, has it own set of problems. A well designed SMPS can certainly outperform a LPS.

The whole LPS vs SMPS thing is more something that lives in the minds of audiophiles, mostly fueled by persistent misinformation or lack of knowledge. I cannot speak for Bruno, but it was obvious he just goes for the best solution. Being the gentleman that he is, he politely sidesteps audiophile mythology with a witty or astute comment or observation...or he tackles it head on, like most recently the whole negative feedback thing.

IMHO...I think this a great move by Manley...bravo.

Last edited by JemHadar; 09-11-2020 at 05:09 PM.
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Old 09-11-2020, 05:27 PM
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'Our' Bruno is ubiquitous!
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Old 09-11-2020, 07:13 PM
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Old 09-11-2020, 08:37 PM
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Speaking of Bruno Putzey, has anyone heard the unique monitor speakers he designed, the Kii Audio 3 speakers?
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Old 09-11-2020, 08:48 PM
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Iím sure Iíve mentioned this in another thread, but there arenít many Linnies here so Iím compelled to repeat it. Linn has been using switch mode power supplies successfully for many years. Itís in their Klimax streamer/dac, which doesnít get as much recognition in ďaudiophileĒ circles but competes on an equal footing with the likes of dCS, Esoteric, etc. Just like the debate of vinyl vs digital, itís not the specific technology, SMPS vs LPS, itís in the implementation. If itís Brunoís implementation, Iím guessing it sounds fine.
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