Phase Alignment The Best Thing

[Scroobius]

I had a traumatic introduction to Phase Alignment but phew was it worth it and oh boy is it good. OK playing albums at high volume (don't we all do that - well I do!!) PA is a serious step forward. But that is not the real point.

The real point for me is listening at lower volume. Sit back relax with a glass of the best malt read something interesting with the music at a sensible (lowish) volume well I find that I keep looking up at the speakers - stupid!! as though I expect to see the musicians in front of me. Ha ha losing it!!. But it is just those repeated moments when the SQ is just so good it makes you look up. At those times it really strikes me just what a big step forward PA is.

To my ears at least PA is a very serious and fundamental improvement.

P

[CoenP]

Hi,

Could you update your sig?

I'm afraid I'm not so lucky with PA activated, maybe I have to look elsewhere first...

Regards, Coen

[Scroobius]

Hey Coen - My sig shows those the settings I have now - I increased the latency moving to a slightly more analogue sound with a tad more latency.
P

[CoenP]

Thanks,

I should have looked closer!

Maybe the combination of the higher Q1 and PA makes sense. I lowered the lot to add a little zest to the sound, which workes quite well wo PA on my set.
Along with the exceptional clarity that PA brings, the sound suffers from a 'thinning' and dynamics feel unnatural no matter what I tried (yet).

Regards, Coem

[praphan]

Hey Coen - My sig shows those the settings I have now - I increased the latency moving to a slightly more analogue sound with a tad more latency.
P

Hi Paul,

I am not quite sure if your sig reflects all your phase alignment settings. At the time of writing this post, I did not see (from your sig) whether you shift it negatively or positively. If you do not invert the phase (which is common) , it is most common that we require negative alignment.

I did play around with DC measurement with various PA settings. I recalled that with check box "Allow PA" being ticked but neither "+" nor "-" checked, I had a normal low DC reading at NOS1 output. That means PA not engaged.

I am very certain of the above. But will check again tonight.

Best
Praphan

[Jud]

I had a traumatic introduction to Phase Alignment but phew was it worth it and oh boy is it good. OK playing albums at high volume (don't we all do that - well I do!!) PA is a serious step forward. But that is not the real point.

The real point for me is listening at lower volume. Sit back relax with a glass of the best malt read something interesting with the music at a sensible (lowish) volume well I find that I keep looking up at the speakers - stupid!! as though I expect to see the musicians in front of me. Ha ha losing it!!. But it is just those repeated moments when the SQ is just so good it makes you look up. At those times it really strikes me just what a big step forward PA is.

To my ears at least PA is a very serious and fundamental improvement.

P

Yes, I agree it's substantially better, even on my fairly low-level office setup.  It seems to bring out all the "magic" in the songs, what the artist wanted to communicate - which I suppose translates to exactly what you are saying about realism even at low volume.  No details of intonation, phrasing, breathing are missed, so to the extent the artist controls these, you hear what he or she intended and get the full emotional and artistic impact, even without making it loud.  (Not that I object to making it loud on occasion.    )

I had not been able to get PA to work previously, so for whatever it may be worth, here is what was successful and what was not.

What was not successful:

- Buffer at 4096, SFS of 2.

- Attempts without OS minimized (is setting the OS to minimize part of the PA instructions I managed to overlook?).  If attempting without OS minimized, I would get the dialog about turning off services, and it never went away.

- Also didn't get it to work using the N22 as an integrated amp (around 20wpc, as opposed to the PSE's 100wpc), but actually I don't think this was critical.

What was successful:

- Keeping everything as close as possible to my former settings in KS Special Mode, i.e., buffer of 512, SFS=430.

- Having the OS minimized.

[CoenP]

Yesterday I went on trying different settings with PA, but no magic happened.

I checked out the dc on the input, since no dc passess to the output with a cap and transformer in the signal path and found "only 34mV. This hardly shifts the operating point of the input tubes and should not make a big difference, but inserting a blocking cap before the input made all the difference!

PA works now and with the - setting the magic of the music reappears. Highly reccommended indeed!

Regards, Coen

[PeterSt]

I did play around with DC measurement with various PA settings. I recalled that with check box "Allow PA" being ticked but neither "+" nor "-" checked, I had a normal low DC reading at NOS1 output. That means PA not engaged.

Of course and indeed the + or - must be active as well.
But hey, we can't expect Paul to seriously adjust his sig with that glass of malt in front of him.

And Paul, this all can't work with 0.9z-6. Ha ha.

Peter

[Scroobius]

Just a bowl of corn flakes in front of me now - and its "-" checked as now shown in the signature.

AND I have measured the DC output and oh boy there is NO ONE who measures dc output as carefully as I do ha ha.

[PeterSt]

Hey Jud,

What was not successful:

- (1) Buffer at 4096, SFS of 2.

- (2) Attempts without OS minimized (is setting the OS to minimize part of the PA instructions I managed to overlook?).  If attempting without OS minimized, I would get the dialog about turning off services, and it never went away.

- (3) Also didn't get it to work using the N22 as an integrated amp (around 20wpc, as opposed to the PSE's 100wpc), but actually I don't think this was critical.

Ad 2.
PA works without Minimized just the same. Or at Attended. It is not related to anything. It needs Activation though (is this a secret ? I think so).
The (apparent) fact that your Waiting for Services to shutdown never goes away without Minimized is not related to anything and is just a separate problem (if you think it is worth while, please open a separate topic for it). Notice though that it can *easily* take 4 minutes outside of Minimized.

Ad 3.
Do you mean that the 22W amp needs too much XXHE output so PA can't engage ?

What was successful:

- Keeping everything as close as possible to my former settings in KS Special Mode, i.e., buffer of 512, SFS=430.

Aha. Now *that* is great information. Hahaha.

Btw, during the development my focus wasn't on Special Mode at all (which I myself also can't test), but I can imagine strange things to happen at Stop. Don't you receive unavoidable ticks there ? If so, try Adaptive and see whether that changes things (leave all other settings be). And if it does, let me know please.

- Having the OS minimized.

I know you didn't tell this for the reasons I have in mind myself, so here are my reasons to agree :

Like the NOS1 needs Minimized generally because otherwise the baddies of the OS are emphasized (at least that is how I perceive it), PA needs Minimized just the same. Eh, somehow. So, the other day I had a session of a couple of hours with Normal OS and PA, and I don't think I even have been so annoyed about the sound. Not sure whether it was PA doing that, but at least it was the first time I listened to that combination. Ouch.

Peter

[praphan]

Just a bowl of corn flakes in front of me now - and its "-" checked as now shown in the signature.

Hello Paul,

As I mentioned, I am not sure that your sig did include all your PA settings. But I am sure you have engaged the feature. With half a bottle of fine malt, you may see both "+" and "-" ticked on the same screen.. 

AND I have measured the DC output and oh boy there is NO ONE who measures dc output as carefully as I do ha ha.

I am sure you did since your amps substantially amplified DC. Glad to see you solved the DC output at amps' binding posts.

cheers!
Praphan

[PeterSt]

With half a bottle of fine malt, you may see both "+" and "-" ticked on the same screen..

Corn flakes are not to be eaten in dry fashion. Shall we ask Paul what he poured over it ?

[praphan]

Corn flakes are not to be eaten in dry fashion. Shall we ask Paul what he poured over it ?

 

[Scroobius]

Shall we ask Paul what he poured over it ?

Good point first thing in the morning not fully "with it" just grabbed a bottle and poured - tasted nice though hic!

 

[praphan]

I checked out the dc on the input, since no dc passess to the output with a cap and transformer in the signal path and found "only 34mV. This hardly shifts the operating point of the input tubes and should not make a big difference, but inserting a blocking cap before the input made all the difference!

Regards, Coen

Hi Coen,

Very interesting finding for your single-ended tube amp. I thought that the DC issue is usually not a problem for all tube amps since they have output transformers. I am not sure if my KT 88 tube amp has coupling capacitor at the input but with output transformer, I have low DC output reading as if PA is not engaged.

So you highly recommend to add coupling caps at the input. Can you explain how? May be I will send you PA.

Thanks a lot.
Praphan