Sound differences with Toroids - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

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, 12:44 PM   #1
ralf is offline ralf  Germany
diyAudio Member
 
Join Date: Dec 2001
Location: Germany
Default Sound differences with Toroids

Hi,

has anyone experiences with sonic differences when using different toroids?

i ask me if it will enhance the sound by replacing standard toroid with high-grade toroid in amplifier...

thanks for help,

Ralf
  Reply With Quote
Old 2nd June 2004, 03:03 PM   #2
Account Disabled
 
Join Date: Aug 2002
Location: Near to the Pacific Ocean
I have tried different toroids, but no different amplified sound. Merely, I have seen some differences in noises of toroid themselves. This applies in my cases.
  Reply With Quote
Old 2nd June 2004, 03:06 PM   #3
K-amps is offline K-amps  United States
diyAudio Member
 
K-amps's Avatar
 
Join Date: Nov 2003
Location: Indiana
10-4 that.


I have experienced more separation after going Dual-mono but that could be just that, a perception.

Some toroids Buzz loud enough to be obtrusive, if yours is quiet enough, no need to change I guess...
  Reply With Quote
Old 2nd June 2004, 04:25 PM   #4
sam9 is offline sam9  United States
diyAudio Member
 
sam9's Avatar
 
Join Date: Jun 2002
Location: Left Coast
If they have eqivalent ratings, none.

I would suggest that size, mounting hardware and cost can affect sound by imposing constraits on other aspects of physical construction. Size and mounting hardware may dictate where it can be located in an enclosure which in turn could impose constraints on locating other components and wires. If you have a fixed budget, cost may impose/offer tradoffs with other components.
  Reply With Quote
Old 3rd June 2004, 10:37 AM   #5
D3 is offline D3  England
diyAudio Member
 
D3's Avatar
 
Join Date: Nov 2003
Location: bolton
Default Traffo's

My brother has conducted a number of tests......for stereo amplifiers within one box.

Dual Mono ie two separate transformers & recitiers gave.......better apprant separation/detail...Hi Fi

However using one transformer with dual secondaries & twin rectifiers gave less obvoius separation but a better feel of integration...........apprantly the effect is not subtle..

This was a subjective test at a reputed HI Fi Company in UK...

My brother stated mesurements alone proved two separate transformers were far superior........but blind subjective tests indicated the single transformer was preferred......

I can't explain this ......... I like dual mono ........ myself...

Just thought I would throw this little ..... nibble of info in...
  Reply With Quote
Old 3rd June 2004, 03:55 PM   #6
Account Disabled
 
Join Date: Aug 2002
Location: Near to the Pacific Ocean
By the way, I feel somewhat different results between toroids and EIs. Probably, it's due to the different magnetic flux densities? With toroids, I feel my swing with steel-shaft iron while, with EIs, I feel my swing with graphite-shaft iron.

What is your different opinion?
  Reply With Quote
Old 3rd June 2004, 04:35 PM   #7
jam is offline jam  United States
diyAudio Member
 
jam's Avatar
 
Join Date: May 2001
Location: Auburn, CA, USA
D3,

You make a vaild point. It seems some small level of crosstalk can subjectively improve sonics. With torids, I have found similar results unless you increase the size of the transformers in the dual mono configuration. i.e. 1KvA in a stereo amp does not translate to 2 X 500vA in the dual mono. It probably translates to more like 2 X 800vA or higher. Probably due to the lower impedence of the larger transformers.

Regards,
Jam
  Reply With Quote
Old 3rd June 2004, 04:48 PM   #8
diyAudio Member
 
Peter Daniel's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Send a message via AIM to Peter Daniel
I compared 200VA, 300VA and 400VA exactly same type Plitron toroids in GC and each sounded different. Using different brand toroid of the same power rating also brough different sonics.

The difference wasn't that big, but there was always preferrence with regards to amount of harshness (or glare), smoothness and overall body. I could live with all those transformers, if I didn't compare them directly side by side.

It seems like bigger was better, but I'm not completely sure about it yet. The bigger transformer was more dynamic, but also possesed more glare and less smoothness.
__________________
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 3rd June 2004, 04:55 PM   #9
jam is offline jam  United States
diyAudio Member
 
jam's Avatar
 
Join Date: May 2001
Location: Auburn, CA, USA
Peter,

I bet there is more capacitance between the primary and secondary of the bigger transformer hence an easier path for noise to get thru. I am thinking of switching to C-cores as they don't seem to have this problem. Have youy tried C-core transformers?

Regards,
Jam
  Reply With Quote
Old 3rd June 2004, 05:03 PM   #10
diyAudio Member
 
Join Date: Jun 2003
Location: Wroclaw
I also compared diffrent brands of transformers a couple of times and the sonic diffrances were quite obvious,especially in preamplifiers.

It seems to me that better quality and more quiet transformers always sounded better.More buzzing ones being more harsh.

I now found a local company producing very high quality transformers for medical porpuses.They have electromagnetic and electrostatic shield and are fitted in plastic cans all filled with epoxy.They are three times more expensive than regular cheapest I can get but they are dead quiet ,even under big load,and sound very good.

Bartek
  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
Quality Control differences = variations in sound quality? KT Class D 3 4th June 2014 12:02 AM
OPA4134 x TL074 - Sound Differences -_nando-_ Chip Amps 41 25th December 2013 03:50 PM
gainclone sound differences ionomolo Chip Amps 29 26th March 2010 10:07 PM
Revealing sound quality differences maraudingtechie Everything Else 4 10th May 2009 07:59 AM
Rotel RCD971 vs RCD991 - Differences Parts & Sound; Any photos of inside of 971? dtm1962 Digital Source 3 28th July 2006 07:42 PM


New To Site? Need Help?

All times are GMT. The time now is 09:55 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