New John Kenny Power Supply....

[plissken]

3 minutes ago, jabbr said:

 

Ok then you are  posting irrelevant and out of context graphs that have absolutely zero meaning without a schematic. 

 

How so? The claim is that it breaks the AC loop. What would a schematic do for you in this instance? 

 

If I have a copper wired streamer or computer and I'm getting AC hum via a loop and I go with your optical isolation method to break the loop why would I need to see your Visio of your network layout? I just need to see the 60 Hz and the harmonics, as a measurement, disappear. 

 

In the two measurements you see this happen with the linear power supply. 

[jabbr]

4 minutes ago, plissken said:

 

Isolation means 'To Isolate' ergo break the path of least impedance. 

 

Huh? what are you talking about. This is a statement which is entirely of out of context to this discussion.

[plissken]

9 minutes ago, jabbr said:

 

You posted the graph, at the very least post the schematic.

 

This is what I'm responding to...

 

You see the two screenshots they are what they are. What's your interpretation? 

[jabbr]

2 minutes ago, plissken said:

 

How so? The claim is that it breaks the AC loop. What would a schematic do for you in this instance? 

 

If I have a copper wired streamer or computer and I'm getting AC hum via a loop and I go with your optical isolation method to break the loop why would I need to see your Visio of your network layout? I just need to see the 60 Hz and the harmonics, as a measurement, disappear. 

 

Do you understand what a floating supply is? This thread is about a battery supply. You are posting graphs that are completely out of context and without a schematic so how could I possibly know what you are even being off topic about?

[Les Habitants]

1 hour ago, plissken said:

 

If your approach is to not understand what your system is doing in your room that's perfectly fine. 

 

Whats not to "understand" if I swap an iPower for a DIY NiMH battery and the sound improves?

BTW - you still never answered my question about a battery supply somehow needing a chassis ground, or was the entire mention of that by you off-topic/irrelevant to this thread? 

My DIY supply has no chassis ground, does it need one?

[plissken]

Just now, jabbr said:

 

Do you understand what a floating supply is? This thread is about a battery supply. You are posting graphs that are completely out of context and without a schematic so how could I possibly know what you are even being off topic about?

 

Then by all means let's get back on topic. My advice is simple:

 

J Kenny doesn't know what he's talking about and I would urge members to purchase like product from more reputable sources.

 

He's been banned here twice, the WBF thread I posted shows his stark ignorance. I would hope that would be enough but people will do what they whether rational or not. 

 

If you think your setup is doing something that warrants a floating supply:

 

Get the Behringer UMC204HD, get the cabling needed to go into it's MIC inputs, install ARTA, go from your DAC into the 204HD, use a 0dBFS silent .wav file and inspect what ARTA captures.

 

If you see nothing then that is because the DAC isn't letting anything through and spending $$ on a floated type supply isn't going to net you anything. Jabbr you know as well as I do that these are VOLTAGE devices. If you have no voltage showing up in the FR domain then you have nothing. 

[The Computer Audiophile]

@Digital Assassin Stop the attacks. Period. 

[plissken]

6 minutes ago, Les Habitants said:

Whats not to "understand" if I swap an iPower for a DIY NiMH battery and the sound improves?

BTW - you still never answered my question about a battery supply somehow needing a chassis ground, or was the entire mention of that by you off-topic/irrelevant to this thread? 

My DIY supply has no chassis ground, does it need one?

 

What I'm saying is J Kenny is developing product, I don't think he's a credentialed engineer. 

 

He started a thread about grounding various components in a star configuration (according to Audio Precision) all without realizing you can not Chassis ground something that doesn't have a groundable chassis. I wouldn't purchase an 'engineered' component from someone displaying that level of incompetence. 

 

I'm in agreement with Kuma that digital assassin is Jkeny/Mmerril in yet another incarnation. 

[Digital Assassin]

Just now, The Computer Audiophile said:

@Digital Assassin Stop the attacks. Period. 

Stop allowing thread derailing, slander, and off topic posts. Period.

[plissken]

I'll offer this to anyone that likes:

 

If you would like to see what your system is doing, I'll make available a small, portable computer with ARTA installed, and the Behringer UMC204HD. 

 

You'll simply pay for shipping both ways and a hold on a CC for the value of the components. When the computer / ADC arrives make the appropriate connections from the output of your DAC.

 

I'll remote into the machine I sent you and run ARTA and we'll go through your system and see what's happening. Open to CONUS members only. 

 

I reserve the right to not ship on a member by member basis if I feel 'hinkey' about said member. 

[Digital Assassin]

1 minute ago, plissken said:

I'll offer this to anyone that likes:

 

If you would like to see what your system is doing, I'll make available a small, portable computer with ARTA installed, and the Behringer UMC204HD. 

 

You'll simply pay for shipping both ways and a hold on a CC for the value of the components. When the computer / ADC arrives make the appropriate connections from the output of your DAC.

 

I'll remote into the machine I sent you and run ARTA and we'll go through your system and see what's happening. Open to CONUS only. 

Start your own thread genius, Get lost.

[Les Habitants]

2 minutes ago, plissken said:

If you would like to see what your system is doing

Or I can just swap that 6-pack of Eneloops in place of the SMPS and hear it for myself. I think I'll stick with that, thanks, the Eneloops have worked well except for the 6 hour run time

 

5 minutes ago, plissken said:

Open to CONUS only

I'm in Canada, but thats ok, I'd have passed on your generous offer regardless.

 

6 minutes ago, plissken said:

we'll go through your system and see what's happening.

So not safe to say the insertion of the DIY battery supply has allowed for one less avenue of potential for ground loop or AC leakage? We'd need ARTA, a Behringer 204HD, and a remote session for that?

[jin]

8 minutes ago, Digital Assassin said:

Start your own thread genius, Get lost.

 

Have you heard about anger management Jhon?

[plissken]

7 minutes ago, Les Habitants said:

So not safe to say the insertion of the DIY battery supply has allowed for one less avenue of potential for ground loop or AC leakage? We'd need ARTA, a Behringer 204HD, and a remote session for that?

 

Your description sounds like typical ground loop hum and you've chosen one of a number of ways to mitigate it. You've essentially installed ground lift with a working window of 6 hours. 

 

It's not the way I like to go as it does not represent best practice as grounds are a safety feature. It's better to engineer a proper solution and is generally doable and not at great expense. 

 

Do you have an outlet tester or multi-meter?

[Les Habitants]

Just now, plissken said:

You've essentially installed ground lift.

In one specific spot.

The system as a whole still has various other chassis grounds, and AC safety grounds, all intact.

3 minutes ago, plissken said:

It's better to engineer a proper solution and is generally doable and not at great expense. 

Fair enough, for the record the Eneloops are not too costly, and neither was the 6-pack battery holder that wires them in series, in fact they were downright cheap.

I do understand that other battery solutions including this new one from Ciunas, or those from SOtM, Bakoon, etc... or still others including the battery-like ultra capacitor based options from UpTone and Vinnie Rossi, do raise the bar on cost.

I'm still interested in them, based on what I hear from a 6-pack of Eneloops wired in series.

[The Computer Audiophile]

Bye bye DA. 

[Les Habitants]

13 minutes ago, plissken said:

Your description sounds like typical ground loop hum

I guess I should add for those that might wish to try something along the lines of what I did, there was never any hum at all, before or after inserting the battery.

[jabbr]

Best I can tell the Keny "PS" is a pair of LiFeSO4 batteries in a box. Nominally 3.2 V and can be 6.4 V is series. No need to assume floating PSUs are expensive. Depends on what the markup is. Since the Ah are not specified, it's impossible to know and I'd assume a large markup. 

 

Battery PSUs are a great way to quickly test a floating supply.

[Les Habitants]

2 minutes ago, jabbr said:

Best I can tell the Keny "PS" is a pair of LiFeSO4 batteries in a box. Nominally 3.2 V and can be 6.4 V is series. No need to assume floating PSUs are expensive. Depends on what the markup is. Since the Ah are not specified, it's impossible to know and I'd assume a large markup. 

 

Battery PSUs are a great way to quickly test a floating supply.

I see it's offered in a 5 volt version too, maybe only that one employs a regulator?

 

[Les Habitants]

30 minutes ago, plissken said:

Do you have an outlet tester or multi-meter?

 

I have both.

[plissken]

12 minutes ago, Les Habitants said:

I guess I should add for those that might wish to try something along the lines of what I did, there was never any hum at all, before or after inserting the battery.

 

Then its back to a 0dBFS .wav file and and ADC. If the .wav is played and ARTA shows nothing then nothing is what is going on. 

 

If you don't have voltages at certain frequencies then you literally have nothing going on :-)

 

You may have scenario that merits some detailed measurements. Problems are better solved then patched over. 

[jabbr]

9 minutes ago, Les Habitants said:

I see it's offered in a 5 volt version too, maybe only that one employs a regulator?

 

The site claims that battery output is unregulated so don't know exactly which combos are used to get to 5v

[plissken]

4 minutes ago, jabbr said:

The site claims that battery output is unregulated so don't know exactly which combos are used to get to 5v

 

How do they stop the random chemical noise of the batteries at work discharging is what I would want to know. 

 

The chem reaction can be noisy. 

[jabbr]

53 minutes ago, plissken said:

If you would like to see what your system is doing, I'll make available a small, portable computer with ARTA installed, and the Behringer UMC204HD. 

When using a cheap ADC to measure a DAC another variable is introduced into the system making it more difficult to know whether you are measuring reality vs artifact. 

[jabbr]

2 minutes ago, plissken said:

 

How do they stop the random chemical noise of the batteries at work discharging is what I would want to know. 

 

The chem reaction can be noisy. 

Not too bad with these batteries! ... and this can be a really easy and cheap and safe soln