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Old 13th March 2012, 08:34 PM   #5591
CeeVee is offline CeeVee  Portugal
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Hi Again Tonyptony

Here is a pic of a current test cap, PEPT, very very nice and a Bobken reg.

Second pic is a PIO cap i tried and the wet tantalum ( smaller ) one.
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File Type: jpg CAP and BObken.jpg (194.5 KB, 495 views)
File Type: jpg Wet Tantalum.jpg (135.8 KB, 478 views)
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Old 13th March 2012, 10:56 PM   #5592
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Thanks CeeVee!
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Old 14th March 2012, 11:52 AM   #5593
billo44 is offline billo44  United Kingdom
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Default C 906

I hate to re-state the obvious, but...

We are speculating and offering our opinions on the effect of one specific capacitor in an entire circuit, yet we all have widely different tastes, we are largely playing our shigaclones through different amps via different speakers in different rooms. There is no way we can qualify a judgement on which capacitor sounds good in position C906. Unless we are measuring multiple parameters to an agreed standard (and surely there isn't one standard we can all agree to).

Without any common denominator we are just sounding off! This is perfectly appropriate and enjoyable, but it is certainly not 'robust data' in any sense of those words. Of course I have learned to value the opinion of numerous more experienced forum members who have previously offered opinions which I find valuable.

But...
Vive la difference!

I am currently enjoying the ERO 1830, 0.1uF capacitor in this position, as recommended in Page 2 of this thread.

In the words of the great Gill Scott-Heron it's a BYOT (bring your own thing) party!

My two yen worth... sorry if I bored everyone!

Bill
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Old 14th March 2012, 12:08 PM   #5594
Pocoyo is offline Pocoyo  Indonesia
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Quote:
Originally Posted by CeeVee View Post
Would vote for Delrin absolutley.

The price being asked for a puck is ....( being polite ) a little steep .
hi ceevee

do you get price for delrin puck ?
pls give us info
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Old 14th March 2012, 01:54 PM   #5595
TheGimp is offline TheGimp  United States
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This reminded me that I have some 35V wet tantalum caps from years ago. I need to dig them out and see if they are still good, and how they measure. Seems like they were mil-spec.

Those PIOs do get big.
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Old 14th March 2012, 02:22 PM   #5596
CeeVee is offline CeeVee  Portugal
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Quote:
Originally Posted by billo44 View Post
I hate to re-state the obvious, but...

We are speculating and offering our opinions on the effect of one specific capacitor in an entire circuit, yet we all have widely different tastes, we are largely playing our shigaclones through different amps via different speakers in different rooms. There is no way we can qualify a judgement on which capacitor sounds good in position C906. Unless we are measuring multiple parameters to an agreed standard (and surely there isn't one standard we can all agree to).

Without any common denominator we are just sounding off! This is perfectly appropriate and enjoyable, but it is certainly not 'robust data' in any sense of those words. Of course I have learned to value the opinion of numerous more experienced forum members who have previously offered opinions which I find valuable.

But...
Vive la difference!

I am currently enjoying the ERO 1830, 0.1uF capacitor in this position, as recommended in Page 2 of this thread.

In the words of the great Gill Scott-Heron it's a BYOT (bring your own thing) party!

My two yen worth... sorry if I bored everyone!

Bill
Billlo 44,

You are right but answering questions is ok too.
Peter, who suggested the ERO has since changed to V-CAP, experimenting and sharing data is also ok.

I did state that one of the single most important mods to make, and that is amply documented here and in Peter's threads, is to have a very good shunt supply for the 5V.
This mod should be included as standard configuration, so huge is the change for the better.
Reason why i posted a pic of it.


Last edited by CeeVee; 14th March 2012 at 02:49 PM.
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Old 14th March 2012, 02:32 PM   #5597
CeeVee is offline CeeVee  Portugal
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Quote:
Originally Posted by Pocoyo View Post
hi ceevee

do you get price for delrin puck ?
pls give us info
Hi Pocoyo,

No...no answer , reason being that the puck is a bad idea!

Woodturner Fran has huge experience in this context and his posts answering that question were of the general opinion that gains , if any are obtained, are marginal and the effort to make a good puck is huge as it has to be turned installed on the shaft of the individual motor.....if you want it absolutely concentric...which we all do.

So i do believe we should concentrate on other areas like the electronics and isolating board from motors....recklocking, those gains are of higher magnitude.

Even though the aesthetics of a good wood puck are so nice....it's contribution to good sound..well.....


Last edited by CeeVee; 14th March 2012 at 02:35 PM.
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Old 15th March 2012, 12:24 AM   #5598
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Quote:
Originally Posted by billo44 View Post
I hate to re-state the obvious, but...

We are speculating and offering our opinions on the effect of one specific capacitor in an entire circuit, yet we all have widely different tastes, we are largely playing our shigaclones through different amps via different speakers in different rooms. There is no way we can qualify a judgement on which capacitor sounds good in position C906. Unless we are measuring multiple parameters to an agreed standard (and surely there isn't one standard we can all agree to).

Without any common denominator we are just sounding off! This is perfectly appropriate and enjoyable, but it is certainly not 'robust data' in any sense of those words. Of course I have learned to value the opinion of numerous more experienced forum members who have previously offered opinions which I find valuable.

But...
Vive la difference!

I am currently enjoying the ERO 1830, 0.1uF capacitor in this position, as recommended in Page 2 of this thread.

In the words of the great Gill Scott-Heron it's a BYOT (bring your own thing) party!

My two yen worth... sorry if I bored everyone!

Bill
Why, it's not boring Bill, you are right to point that out. Although, having said that - I think there is a certain division line between the subjective and the objective in the audio world: where the quality of components in question is vaguely comparable, we are talking subjective choices - tastes, if you will. Like choosing between Gibson and Fender. But where quality differs significantly, the choice becomes an objective one - a component is clearly better than another, like Stradivarius next to a school violin. Then the decision is only dependent upon external constraints (like price or availability).

My cap is made very differently, and as a result, sounds very differently from commercial caps. If you want robust data then I'm afraid I don't have any - simply because I consider it largely irrelevant: I never found any link between, say, leakage current and the actual sound produced. I still take those parameters into account when designing my components, I just consider other factors orders of magnitude more influential. In any case, I always offer a full refund, so why not try?

Also, if you would like an independent (although still subjective ) opinion about the sound of my caps, Peter Daniel was kind enough to let me mention that he is currently using my VNM Cap, and quote his comments after comparisons with V-Cap in his DAC input:
Quote:
(...) You are familiar with my moded 1543 NOS DAC. Ive buit two of them for my friends as well as they were actively participating in the voicing process. After all was done, I made one more test with a coupling cap at DACs input. They both preferred the DAC with a cap (I was using 0.01 0.1 Teflon V-Cap, larger value sounded better and CU was even more better), however, I couldn't convince myself to using a cap in that position. While the V-cap was smoothing the sound, it was also affecting immediacy and dynamics, so in the end I had my DAC always coupled directly.

When I installed your cap, I actually like all the effects it was introducing and most likely it will stay in. It sounds very natural and smooth and I really dont notice any degradation of immediacy and dynamics. (...)
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Old 15th March 2012, 04:58 AM   #5599
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Quote:
Originally Posted by CeeVee View Post
Hi Again Tonyptony

Here is a pic of a current test cap, PEPT, very very nice and a Bobken reg.

Second pic is a PIO cap i tried and the wet tantalum ( smaller ) one.
Hi, Is the correct circuit diagram available for the Bobken reg, i saw some earlier post but was not sure which is which. Thanks
Rob
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Old 15th March 2012, 08:05 AM   #5600
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This should help: Pushing the limits of TDA1543 NOS DAC

Just make sure to read all Peter's and Bobken's comments as it is a rather specific design, and also I think the diode was reversed on the first schematic.
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