DIYHiFi.org

What is a "ALWSR."?

ALW Jung super regulator.

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Carlos Filipe

"Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius - and a lot of courage - to move in the opposite direction." Albert Einstein

alwsr is described very well in his build imstructions.
He also sells PCBs.
http://www.alw.audio.dsl.pipex.com/Manu ... iss009.pdf
but, today I get the message " the file is damaged could not be repaired."

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regards
Andrew T.

You can buy the PCB or module here:
http://www.at-view.co.uk/alwsr.htm
The price is good.

This pdf is good:
http://www.at-view.co.uk/pdfs/ALWSR%20r ... ev009a.pdf

No one ?

I think this is not a right place to for a non EE diyer

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NEERAJ

469 posts in this thread, and I doubt one is by an EE.

What makes you think that they have Gerber files to share?

Jocko

Thanks for your reply Dear Mod.
I want at least one reply, which i recieved now

I know that there are lot of ways to Assemble these circuits as shown in photographs attached.
I just need an answer from forum.
Regarding Garber files Please read all the pages & you will come to know the Answer ( Pages 20~30).

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NEERAJ

I have been informed that there's a 'group buy' thread at Pinkfish media forum.
I feel that I need to clarify some things:

- That crazy PCB design, which is based exatly on MY schematic, doesn't have my permission, nor was I consulted.
- Call it 'group buy' or whatever you want, and although the guy gives me the credit for the schematic on the PCB, I don't agree with the PCB design and I don't agree with his attitude - asking help with the PCB design and right away talking about a 'group buy'. Typical.
- Can you trust a guy with a nickname 'Hacker'?
- Am I going to loose my time with a forum that allows such behaviour? No. I don't care.

Up to now I have tried to keep this strictly in the diy field.
I knew that by posting the design it would be in the public domain, and so it is. But there's a call of attention on the schematic: for diy use only.
I have no problem at all with other people making their own PCBs and privately sending their files to others, or their boards.
All in a private basis. This has happened before and those guys were honest enough to ask me permission to do that.
There are good, honest people using my preamp, with or without changes to the original design. These guys have made the PCB for theirselves and when contacted by others have sent the files. Even so, they asked me if it was ok to do that.

As for that unauthorized 'group buy', I'm not even going to take it serious. Actually, I have more important stuff to worry about in my life than this kind of stuff.
It's in your hands. Go on and buy him the board, if you want.
You'll get the feeling of a made in china kind of copycat stuff, but hey... it's an AD815 pre. Right?

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Carlos Filipe

"Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius - and a lot of courage - to move in the opposite direction." Albert Einstein

Hi,

If I use the AD815pre as an active preamp in a one box integrated amplifier,
can the output 33r resistor be omitted or should it be changed to a different value ?

Thanks,

No, let that resistor stay. As close as possible to the output pin of the AD815.

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Carlos Filipe

"Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius - and a lot of courage - to move in the opposite direction." Albert Einstein

Hi Carlos,

Your preamp design looks really wonderful and I'm finally going to start putting one together.

Is there anything magical about the 68uF value for the power supply decoupling caps on the AD815? I looked in my parts box and have 50uF and 100uF. If 68uF is the recommended value, I will purchase those of course. Just wondering why you chose that specific value, though.

Thanks for sharing the promising preamp.

Best,
KT

No, that's not critical. You can use 100uF.



I wanted small enough to be near the PSU pins on the chip and high enough in capacitance.
As I had some decent caps at 68uF/25V that's what I used and I've put that value in the schematic.

_________________
Carlos Filipe

"Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius - and a lot of courage - to move in the opposite direction." Albert Einstein

Thanks, Carlos.

Best,
KT

Hi Carlos and all,

This is my first post - nice to be here.

I have a SOIC version of the AD815 chip and would love to make this preamp. I have heard a lot about this design and am keen to have a try - thankyou Carlos.

I have only made surface mount stuff bfore so this will be a first, and learning experience.

Would it be possible to share someone's design of a PCB encorporating the SOIC chip?

kind regards

Aidan

Read the entire thread here, and at the other place (diyaudio) and you might find what you are looking for...