Shuggie's SL-1210 Blog Revived

[Dave Cawley]

I am not concerned about your credentials or your commitment to improving the performance of the Technics deck.

But Art of Sound members and our customers are!!

I have amended our website to accommodate the customers faulty multimeter, but why he needed a multimeter in the first place is a mystery? But Paul, what is it your objection to on our website, I cannot see anything that is incorrect? I do hope you are not reading too much into what I said, or reading between the lines?

Dave

[Marco]

Marco, I believe Paul has already shown it in his earlier post?

Ah yes, sorry. I'd forgotten about that

It just flew over the top of my head before...

What I'm getting at is *specifically* what is considered as objectionable/inappropriate by Paul. As it's largely all 'technical gobbledygook' to me, it's difficult for me to understand what exactly the problem is...

Paul,

Perhaps you could help me out a bit more?

Marco.

[Mike]

what is considered as objectionable/inappropriate by Paul.

If you read some of the comments Dave has made in this thread in conjunction with the comments on his website it's my understanding that Paul believes Dave is, err, 'casting aspersions' on his own PSU in order to promote the Timestep.

At least that's my take on the situation.

[jonners]

Yes, and Dave has not exactly 'amended' his website: He has added an additional comment which continues to 'cast aspersions', in my opinion.

[Marco]

I think you're absolutely right, Mike. I'd just like the specifics of the 'casting of these aspersions' explained a bit more clearly in 'layman's terms'

Basically, I can't offer an opinion on 'who's right' and 'who's wrong' without this.

Paul?

Marco.

[Paul Hynes]

Hi Marco,

It would appear that DC feels moved to add further to his website comments so I have included tha addition here.

Note 30 June 2009: PSRR has been mentioned by some people, but it is the end result that tells all on our PSU, quite simply we measure noise on a HP400F voltmeter with a noise floor of 2.5uV, remember too that most equipment rejects power supply noise by at least 60dB. Theorising is OK, but measurements tell all! Another manufacturer of PSU's normally used for preamplifiers decided to have ago at us, and about how his PSU reacted to differing loads and how much feedback he used. Well we all know about the pitfalls of excessive feedback and a motor control has different requirements to a preamplifier! The last we heard of it was that " is back with **** for the moment for some adjustments" yes indeed! We are professional designers with a long pedigree. Update 31 August 2009: Apparently the owners multimeter was faulty not the power supply? Remember, with a Timestep PSU you only need a screwdriver and a soldering iron, you don't need anything else and you certainly do not need to set it up with a multimeter or anything else. The Timestep power supply comes fully tested, fully set up and completely finished in its own rather nice case.


Regards
Paul

Dave,

I think it would be obvious to anyone involved in electronic design why the multimeter was needed, as the power supply was required to power two different decks with different voltage requirements. I was asked to make the output variable to accommodate this requirement and other future potential voltage changes that may be required. How are you supposed to set the voltage to the required value on a variable power supply without a mutimeter, or some other way of reading voltage, Dave? Please answer this question, as I am keen to know how you would achieve such a feat.

Yet again you are avoiding my request to substantiate the comments you have made about my power supply. It's a simple tactic. Politicians use it all the time.

Paul

[Marco]

From Dave's website (as posted by Paul):

Another manufacturer of PSU's normally used for preamplifiers decided to have ago at us, and about how his PSU reacted to differing loads and how much feedback he used...

Ok, can we start by someone showing me evidence (in the form of a direct quote) of this bit about "having a go"? Where and when did this "having a go" take place? I would like to read the exact text that was used by the 'guilty party'.

Cheers!

Marco.

[Paul Hynes]

Hi Marco,

My concern is that the comments Dave has made about my power supply are not factual. I do not think I am asking too much for him to explain what he means by each comment or for him to support his comments technically. A professional response would have been to substantiate any claim made in public.

Regards
Paul

[Marco]

Oh I agree, I think the ball's very much in Dave's court now.

Just to make it absolutely crystal clear... Admin have no 'loyalties' or bias towards anyone in reference to this issue.

We are only concerned about what is right and fair and will support whatever is deemed as such by the evidence given in support of both arguments

Marco.

[Mike]

Basically, I can't offer an opinion on 'who's right' and 'who's wrong'

And nor should you, 'we' are in no position to be judge & jury!