Controversy

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amplifierguru

Controversy
« on: 21 Jan 2006, 09:08 pm »
Hi Patrick,

My post explaining the problem with this method has mysteriously disappeared??? Moderators??

The running of the BALANCED -in through the 'lifted' feedback leg, on a feedback power amplifier has the potential to, with the slightest interrupt to the connection, return the power amplifier to unity gain - in which most would not be stable and would oscillate.

This is not a good balancing practice, for interconnected eqpt. That's why I asked for clarification. Not from you - you're description was fine.

Cheers,
greg :|

hifryer

  • Jr. Member
  • Posts: 16
AKSA reliability
« Reply #1 on: 22 Jan 2006, 06:27 am »
The collective experience of the AKSA users on this forum can attest to its reliability.  That said, the AKSA N+ is a highly strung racehorse of an amplifier.  It is the Porsche club racer you take on the big boys with but drive to the office every day.

The AKSA N+ is a very high gain / high feedback amplifier with its compensation pared to the bone - I suspect this is what gives it it's amazing speed and responsiveness.  

However, be warned - I have blown several up through stupidity!  Dont play around connecting or disconnecting things with it playing!!  Don't open it up and stick your fingers in whilst it is playing!!  Dont buzz the input terminals to see if it's on! Be cautious testing highly reactive speakers / cables.  Don't short speaker leads!! ( I did :-(  It is NOT protected.  

We all know, if you build it well and take commonsense care you will have no problems.  Treat the "balanced" mod like a pits based suspension mod on race day.

cheers

amplifierguru

Controversy
« Reply #2 on: 22 Jan 2006, 06:48 am »
Hi all,

sure Hugh/hifryer,

I can provide you with the correct way to do a simple balanced input conversion for your amplifier. I do design work for companies who profit from it so, I guess, should I.  Such specificity dictates that basic amplifier information is provided then I can tailor a (simple) network for any application, so you don't have the aforementioned problems and get the most for the trouble. Source impedance is not critical 100R -> 10K.

Cheers,
Greg :wink:

hifryer

  • Jr. Member
  • Posts: 16
amplifierguru does it for cash!
« Reply #3 on: 22 Jan 2006, 09:48 am »
hahahahahahahaha ROTFFLMAO!!

 Amplifierguru, I wonder if there is any part of the spirit of this Forum you do understand?

Most of us are here to help each other. To exchange experiences. To make suggestions we found worked for us.  The initial post here was an excellent example of "it worked for me and here's how to do it" !

All we ever seem to get from you is sniping from the sidelines. Negatives about how awful everything is and how clever you are in knowing much better and creating much better but you aint going to tell us cause your knowledge is so precious.

Why would any of us want to hear this? How do we ever benefit?

Why then are you wasting your time in this particular Forum??

I'm sure Hugh is perfectly capable of a truly excellent Balanced AKSA design. This would require a new board design and would be a different or enhanced product.  It seems he is not ready to do this at this point.

Your offer to do this for him for a fee  is insulting and totally irrelevant to this thread but totally consistent you promoting your commercial interests in someone else's patch.  Are you that desperate???