RoyBoy
I was wondering if anyone has experimented with any "upgraded" power cords for your Submersive that produced any worthwhile improvements. Of course other items like pre-amps, amps and sources can be sensitive to AC cord improvements. I did see that a company called AV Options has a Cryo treatred PowerCon AC cord for not ridiculous money. Just curious...Thanks
 
BTW - my two HPs are plugged directed into wall AC outlets. I recently changed out the contractor grade AC outlets for some cryo-treated Hubbell hospital grade outlets (Porter Ports on Audiogon) that were reasonably priced ($42) and noticed a nice
improvement in articulation of the bass frequencies.
Carrollton, Tx
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herndonb
My SubMersive HP responded with additional "speed" with fast bass notes (Marcus Miller) replacing the AC cable with a Purist Audio Design Aquila digital AC cable.  They make them in any length you want, and will put the Neutrik PowerCON on...
I too have heard the improvement with Albert's outlets.  Purist cryo/mag treats those outlets for Albert.
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FOH
Interesting, ...for either of you, to what do you attribute the difference? No, I'm not trolling for an argument, I'm genuinely curious.


I have a good background in the physics of electricity and electronics. I have spent much effort wrt line side power delivery/distribution, both theoretically and implementing my own. I've read the "white papers", and attempted to delineate between marketing BS and the actual science within those white papers. I've spent much time discussing this with others, including Art Kelm, studio power guru/studio designer.


All said, although the aftermarket is flooded with snake oil, I believe there is merit to some power cable performance claims. Granted, I've also witnessed the powerful expectation effect we all bring to the equation, ... I'm not immune.

Anyway, thanks for posting your experience.
Kevin



Also, there's the "why wasn't the power supply designed better" position, relative to power cable upgrades. Well I've met and spent time with the designers, engineers and manufacturers, of both the Submersive's superb SpeakerPower amplifier, and of course the SubMersive itself. Both of which are quite savvy within the EE realm.



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RoyBoy
While I do not think I have the EE background to to support either position on the effect
or lack of effect on power cords, I have done a fair amount of empirical testing on various
components in my system and feel reasonably confident in my observations that in most cases
an upgraded power cord does (not always) make a difference. Sometimes it takes a little time
to determine if that difference is an improvement or not.
  My two channel preamp and monoblock amps are from Tube Research Labs. In discussing the issue of power cords with the Paul at TRL, he suggested using upgraded power cords over the "stock"
power cords and felt strongly that with his equipment they should be solid core conductor power cords. He fabricated such power cords for his clients as a very attractive cost compared with buying from a dedicated power cord vendor.
  While I have not used Shunyata power cords, they wrote this interesting Q&A on Why Power Cords Make a Difference. http://www.gcaudio.com/resources/howtos/powercords.html
Carrollton, Tx
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herndonb
***Purist Audio Design dealer disclaimer***
I am an EE.  But still I didn't really see why/how a power cord could influence an audio system.  However, I've listened to many of them, and unfortunately they do.  A lot are only marginally better than the stock one, some sound worse than stock!, and some are grossly overpriced for their improvement too.  But then there are some that are truly amazing.  I can say that when I switch the stock power cord for the Aquila digital AC cable the notes start and stop more quickly on my SubMersive.  Fast succession of notes are more distinct, more separate with it as well.  There is a perception of more depth with the stock AC cable, but after you go back and forth you realize the Aquila tightens things up and has less overhang, less slop.  Initially it sounds lean, but then you notice is more tuneful/less boomy.
Why?  Well I think AC cables must act as a noise filter.  I've heard that there is plenty of noise on the AC line from syncrophaser communications, but I've also read that devices also create their own noise, and perhaps the AC cable helps to control that noise/reflection?  Some will say they like AC power conditioners for noise control, but I've found they destroy dynamics and make the system sound soft/boring/polite.  The first thing I like to do for people who've invested in a power conditioner is to remove it and listen.  Immediately the system wakes up!  Good cables help with noise and with realism, win-win.  Those who believe cables are "snake oil", I understand your view, and know you are convinced and not going to listen.  I respect that.  I used to share your opinion and I'll never change your mind in a blog.  The Seaton SubMersive is the best sounding sub I've ever heard.  It'd be a bargain at twice the price.  The lack of noise both from the drivers and the balanced cabinet.  The brilliant DSP that Mark has programmed, even the finish is awesome.  The SubMersive sonically blends into the room and just disappears.  I had a sub that was 4X more expensive, and don't miss it one bit!  :-)  Bravo to Mark for this achievement.
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Stereodude
herndonb wrote:
***Purist Audio Design dealer disclaimer***
I am an EE.  But still I didn't really see why/how a power cord could influence an audio system.  However, I've listened to many of them, and unfortunately they do.

So how did you arrive at the conclusion that your education and understanding of electrical principals was faulty, not that your perception being colored by bias or expectations?
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herndonb
Just stating that I can identify the improvement every time when comparing the stock AC cable to the Aquila AC cable.  I'm not using any EE knowledge (which I never said was faulty), nor am I letting it get in the way, and bias me into thinking a power cord can't possibly change the performance of an audio component.  I'm both an engineer and an audiophile.  I listen to everything with an open mind.  It took many subwoofers and lots of comparing to finally arrive at the SubMersive as another example of bias.  The SubMersive is finest sub on the planet, regardless of cost, that I've heard so far.  There is something about the opposed driver subwoofer configuration that I really like!  I had one previously that cost four times more, but I didn't let that bias me into making my mind up before listening.  I also didn't allow the fact that the other sub technically could move ~75% more air bias me into listening with open ears to the fantastic SubMersive.  To answer the original question again, yes some power cords improve the already state of the art SubMersive.  If you are biased and think otherwise so be it.
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