Powercords and effects on Pass Labs amps

[mert]

Recently I am using Oyaide Tunami Gpx with my X250.5 and blown with outcome
When first time I pluged , I had a feeling that a parametric room equalizer has started to work in the system
Japanese do know how to make cable

[Hartono]

interesting cable, it has microwave absorber inside!!

very nice...... now I have some nice idea to absorb microwave........

[Magura]

Originally posted by Hartono
interesting cable, it has microwave absorber inside!!

very nice...... now I have some nice idea to absorb microwave........

Oh, I'd sure whish I had such a cable........

Magura

[Hartono]

Hi Magura,

"Oh, I'd sure whish I had such a cable........ "

regarding microwave and RFI absorber, you might find these link interesting:


http://www.ramayes.com/TDK_Microwave_Absorber.htm

this one also, and have some very nice line filter:
http://www.ets-lindgren.com/page/?i=...n2=Application


PS: Love your metalworks !!

Hartono

[Magura]

Originally posted by Hartono
Hi Magura,

"Oh, I'd sure whish I had such a cable........ "

regarding microwave and RFI absorber, you might find these link interesting:


http://www.ramayes.com/TDK_Microwave_Absorber.htm

this one also, and have some very nice line filter:
http://www.ets-lindgren.com/page/?i=...n2=Application


PS: Love your metalworks !!

Hartono

Thanks for the links....it was meant as a joke though....I find it hard to find a reason for microwave absorbers in audio equipment, let alone power chords in general.

My powerchords are of the run of the mill type.....they do an excellent job, they actually conduct power from the wall outlet to the equipment

Magura

[Hartono]

Hi Magura,

"Thanks for the links....it was meant as a joke though....I find it hard to find a reason for microwave absorbers in audio equipment, let alone power chords in general. "

I don't mind , I know it's a joke , it's too bad that people incorporate some kind of filtering and call it "powercord", I also used to object to this idea of "powercord" as a tweak, but powercord is one of the good place to put them, because it's long. And RFI/Microwave (any kind of interference) is hard to tackle using only discrete components, Ferrite is also not a good idea for audio, so long power cord in this case have advantage, and the filtering mode is "distributed", instead of lumped at the end. Tektronix even have scope probe cable with distributed resistance to reduce reflection/resonance.

power transformer and supply capacitor sometimes unable to do this filtering correctly, since they have their esl, esr, winding to winding capacitance. if those kind of filtering is done inside the amp/supply box it would take a lot of space, and might not be as effective.


Cheers,
Hartono

[Magura]

So what you're saying is that there is actually a reasonable excuse for this stuff ?

Magura

[Hartono]

unfortunately......................yes. but many didn't do anything, finding the one that works is the hard one. If we already have an idea how to do this filtering via power cord, then we can see their construction, and materials, many powercords do nothing in this regard, but some does. Don't ask me what brand though....I didn't check on them that much, still have other better things to do.

PS: longer is better

Hartono

[Hartono]

if you check on my second link, their line filter is awesome
100dB attenuation starting from 14 Khz !!

[Magura]

Originally posted by Hartono
if you check on my second link, their line filter is awesome
100dB attenuation starting from 14 Khz !!

Will do.

Magura