Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 1st June 2004, 10:01 PM   #41
Banned
 
Join Date: Mar 2003
Location: Lisbon, Portugal
Quote:
Originally posted by Nuuk
I'm convinced - where do I get a 'colume' for my GC?

I can't edit the post now...
It's 'volume', I hope my neighbours are still alive.
  Reply With Quote
Old 1st June 2004, 11:17 PM   #42
Pedja is offline Pedja  Serbia
diyAudio Member
 
Join Date: Jun 2002
Location: Belgrade
Well, was interesting. I have not even tried to use any caps after 338s other than 3875s local caps. Unfortunately, I dont have these regs working at the moment so can not check it.

Does it get better than that? Heh, yes Id say. While I can concur with that the simpler non-f/b supply from my page showing regulated GC supplies sounds rather different than better than LM338 (though I am honestly leaning toward it), that second non-f/b supply is better.

Pedja
  Reply With Quote
Old 2nd June 2004, 07:10 AM   #43
diyAudio Member
 
Join Date: Jul 2002
Location: denmark
i guess its time for peter daniel to try the regulated supply....... ......
  Reply With Quote
Old 2nd June 2004, 09:27 AM   #44
Banned
 
Join Date: Mar 2003
Location: Lisbon, Portugal
Listening to good music 'till 2 AM...
A good test for transient speed, harmonics, treble detail, dynamics is two vinyl LPs I have from Keith Jarrett (they are called "Volume 1" and "Volume 2").
Very good ECM pressings, as always.
This amp is impressive to say the least.

Even with a much weaker trafo (compared to the big toroid I have on the URGC) salvaged from an old amp.
I can take the conclusion that with these chips and an unregulated PSU you always have a compromise: between 1,000uf and 1,500uf capacitance is the ideal on a sonic point of view (I made tests), but of course it's always a compromize.

With a regulated PSU you can have much more capacitance BEFORE the regs, and it pays off.

If only I could send you all the sound of this thing...
  Reply With Quote
Old 2nd June 2004, 09:39 AM   #45
Nuuk is offline Nuuk  United Kingdom
diyAudio Member
 
Nuuk's Avatar
 
Join Date: Feb 2003
Location: Somerset, SW England
Carlos, I have the Keith Jarret LP's "Colume 1" and Colume 2"

Now enough joking, I am going to my 'workshop' to do more work on my regulated GC!
__________________
The truth need not be veiled, for it veils itself from the eyes of the ignorant.
  Reply With Quote
Old 2nd June 2004, 09:42 AM   #46
Banned
 
Join Date: Mar 2003
Location: Lisbon, Portugal

Then listen to track 2 of side one of "Volume 2".
  Reply With Quote
Old 2nd June 2004, 01:22 PM   #47
diyAudio Member
 
Peter Daniel's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Send a message via AIM to Peter Daniel
Quote:
Originally posted by tbla
i guess its time for peter daniel to try the regulated supply....... ......
How would you compare reg PS to batteries?
__________________
www.audiosector.com
Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it. - JC
  Reply With Quote
Old 2nd June 2004, 01:28 PM   #48
Banned
 
Join Date: Mar 2003
Location: Lisbon, Portugal
Hi Peter.

No batteries to compare, so...

But believe me, this is special.
Try it.
Because it seams that I'm alone with Pedja on this.
For now.

Nuuk?
  Reply With Quote
Old 2nd June 2004, 01:49 PM   #49
Nuuk is offline Nuuk  United Kingdom
diyAudio Member
 
Nuuk's Avatar
 
Join Date: Feb 2003
Location: Somerset, SW England
Quote:
Because it seams that I'm alone with Pedja on this.
Not quite Carlos, several people to my knowledge have tried regulated supplies!

I'm still working on my case.
__________________
The truth need not be veiled, for it veils itself from the eyes of the ignorant.
  Reply With Quote
Old 2nd June 2004, 02:15 PM   #50
Banned
 
Join Date: Mar 2003
Location: Lisbon, Portugal
Quote:
Originally posted by Nuuk

Not quite Carlos, several people to my knowledge have tried regulated supplies!
And they don't say anything?
Or it may be a case of not doing it the best way, as this thing is picky with capacitance after the regs.

Quote:
Originally posted by Nuuk

I'm still working on my case.
Much listening to do before that.
The case is the last thing I do.
I try the amps without the case, with test wires, connectors, heatsinks.
It's all prepared for R&D.

I can dismantle the whole thing in seconds, change a component and test again.
Forget the case for now or you may find out too late that you made some unnecessary holes.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
High Current Regulated Power Supply For Gainclone: Design Thread rhysh Power Supplies 11 24th March 2009 06:22 PM
Gainclone Power Supply iandrum Power Supplies 11 28th January 2009 02:23 PM
Gainclone Power Supply Design *cont* (sorta) officeboy Chip Amps 6 4th June 2004 10:01 PM
Gainclone power supply soundNERD Chip Amps 10 4th February 2004 01:31 AM
Help with gainclone power supply Eargasm Chip Amps 8 26th March 2003 03:09 AM


New To Site? Need Help?

All times are GMT. The time now is 03:02 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2