Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

The Lounge A place to talk about almost anything but politics and religion.

John Curl's Blowtorch preamplifier part III
John Curl's Blowtorch preamplifier part III
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 Today, 06:09 AM   #31821
SyncTronX is offline SyncTronX  United States
diyAudio Member
 
SyncTronX's Avatar
 
Join Date: Oct 2008
Location: New Projects Enter the Queue Oh My!
Quote:
Originally Posted by scott wurcer View Post
I seriously doubt that could be verified. In private he spoke of audiophilia in quite colorful terms.
Yes, it was written, Bob Pease was investigating it or going to investigate
it (the audible different between the plastic and the can. I was surprised
that I read it. Was it in Jim Williams book? However, that was the one
criticism about audiophile that Bob had to reckon with, because he
heard it too, and it started to bug him...


...we all know how that goes...but still he posited some theories and
was going about cogitating on how he would prove what he heard
and why.


@Demian, I was going to ask you something about the room or
the amp devices they used, the last upgraded batch before Ti bought
them out and liquidated them in favor of BurrBrown.


As an aside, which amps do most people prefer?
Those from National?
Those from BurrBrown?


Cheers,
__________________
-- Sync
  Reply With Quote
Old Today, 06:32 AM   #31822
SyncTronX is offline SyncTronX  United States
diyAudio Member
 
SyncTronX's Avatar
 
Join Date: Oct 2008
Location: New Projects Enter the Queue Oh My!
Quote:
Originally Posted by dimitri View Post
Hi Scott, I can confirm this. I spoke with Czar after his presentation AES San Francisco 2008: Tutorial T13

Meanwhile I don’t have any records
What? You don't do analog? only CDs and other digital media?


AND


There was a fellow DIYAudio guy here who either posted a pic
or someone else posted a pic of them with himself...Maybe it was
Ed?


I think it also had to do with a discussion about the presentation
and a solution that was proprietary etc. At some point in some

thread here in DIYAudio the solution to the problem was posted
on an attached schematic. Then I think the guy got pissed that

what was posted wat the correct solution too, and the cat was
outta the bag, therefore it was publicly disclosed through no
fault of the guy, yadda...yadda...yadda... legal mumbo jumbo, et al,
and so it could be discussed openly.


Then it was.


I still don't know which thread or with whom and the specific topic
and Sorry Dimitri i get it now, finally, I don't have any documention
or citation.


Cheers,
__________________
-- Sync
  Reply With Quote
Old Today, 06:37 AM   #31823
SyncTronX is offline SyncTronX  United States
diyAudio Member
 
SyncTronX's Avatar
 
Join Date: Oct 2008
Location: New Projects Enter the Queue Oh My!
Quote:
Originally Posted by Bonsai View Post
(snipage)
Now, I'm letting all my techniques for good sound out here, so you should respect me (and that includes you Syn08).

Now they will respect you, and in the morning,
they will respect you even more.


Cheers,
__________________
-- Sync
  Reply With Quote
Old Today, 06:47 AM   #31824
SyncTronX is offline SyncTronX  United States
diyAudio Member
 
SyncTronX's Avatar
 
Join Date: Oct 2008
Location: New Projects Enter the Queue Oh My!
Quote:
Originally Posted by Bonsai View Post
The correct solution is a Ayrton-Perry wire-wound resistor (see here Ayrton& - Wikipedia ). Mills do the best ones (great resistors for CFA feedback networks BTW - I measured the L on the 1k 10W that I use at 36nH which is about the 3x a straight copper track on a PCB).

Details here Vishay Mills - Vishay Brands - and they are available from mouser and DK.

Bonsai, can we cut to the chase?


I can't afford to make any more mistakes buying the "wrong" resistors, etc.
Would you be kind enough to let me know which series is best, please?
And if you don't want to disclose it for public consumption please feel
free to send me a PM.


Cheers,
__________________
-- Sync
  Reply With Quote
Old Today, 06:57 AM   #31825
indra1 is offline indra1  Indonesia
diyAudio Member
 
Join Date: Nov 2010
Location: Bogor
Quote:
Originally Posted by SyncTronX View Post
... which series is best, ...
It would be Mills MRA.
  Reply With Quote
Old Today, 08:17 AM   #31826
scottjoplin is offline scottjoplin  Wales
diyAudio Member
 
scottjoplin's Avatar
 
Join Date: Dec 2015
Location: Penrhyndeudraeth
Quote:
Originally Posted by RNMarsh View Post
I suggested a process to learn how accurate your system is. Have you tried it yet? BTW I think open tests are fine to detect differences but not for accuracy until you know from practice and experience what it ought to sound like. So, the suggested process can be used as practice also.
Yes, thank you for sharing Richard, my memory isn't that bad No, I haven't tried it yet and as a test for accuracy, the principle seems perfect?

Perfect for "they are here" not so good necessarily for "I am there"

Wherever there is...........

Last edited by scottjoplin; Today at 08:33 AM.
  Reply With Quote
Old Today, 11:23 AM   #31827
RNMarsh is offline RNMarsh  United States
diyAudio Member
 
RNMarsh's Avatar
 
Join Date: May 2012
Location: 2457 Cascade Trail; Cool, CA. 95614
Quote:
Originally Posted by scottjoplin View Post
Yes, thank you for sharing Richard, my memory isn't that bad No, I haven't tried it yet and as a test for accuracy, the principle seems perfect?

Perfect for "they are here" not so good necessarily for "I am there"

Wherever there is...........
The you are here or you are there will not change. That is in the way the recording is mic'ed and your own speaker/room acoustics. That doesnt change. To sound just like the familiar voice uses the same room/acoustics.


THx-RNMarsh
  Reply With Quote
Old Today, 11:35 AM   #31828
scottjoplin is offline scottjoplin  Wales
diyAudio Member
 
scottjoplin's Avatar
 
Join Date: Dec 2015
Location: Penrhyndeudraeth
That's what I mean, the room acoustics are still there, obviously listening nearfield makes a difference. This is a test for how similar the speaker's interaction with the room is to that of the sound source in the room, among other things
  Reply With Quote

Reply


John Curl's Blowtorch preamplifier part IIIHide 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

Forum Jump


New To Site? Need Help?

All times are GMT. The time now is 12:25 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki