DCAudioDIY.com

DC Area Audio DIYer's Community
It is currently March 28th, 2024, 8:37 am

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 7 posts ] 
Author Message
PostPosted: January 16th, 2020, 7:42 pm 
Offline
User avatar

Joined: January 15th, 2015, 7:19 am
Posts: 1697
Location: Baltimore MD
Is there a phase shift of mains through a isolation tranny. Dose it matter since AC is converted to DC anyway.
I have my power amps directly connected to dedicated 20amp line, but my line level parts connected to same mains through a 1kv iso tranny.
I have convinced myself I get a quieter system than without the iso tranny. I suppose I need to do a reality check and take it out and listen.
YES THIS IS A SMALL CHANGE THAT IS PROBABLY NOT VERY IMPORTANT


Top
 Profile  
 
PostPosted: January 16th, 2020, 10:34 pm 
Offline
User avatar

Joined: July 24th, 2015, 4:17 pm
Posts: 1701
Location: Parkville, Maryland
Pelliott321 wrote:
Is there a phase shift of mains through a isolation tranny. Dose it matter since AC is converted to DC anyway.
I have my power amps directly connected to dedicated 20amp line, but my line level parts connected to same mains through a 1kv iso tranny.
I have convinced myself I get a quieter system than without the iso tranny. I suppose I need to do a reality check and take it out and listen.
YES THIS IS A SMALL CHANGE THAT IS PROBABLY NOT VERY IMPORTANT


The very best thing I ever installed in my system was an isolation transformer two decades ago. It runs all of my line level stuff.

_________________
Walt


Top
 Profile  
 
PostPosted: January 17th, 2020, 9:53 am 
Offline

Joined: January 14th, 2015, 11:15 pm
Posts: 499
Since my isolation transformer works only on 115 volts, I will be giving it away at the next non-snowing meet. I got it cheap off ebay in June 2018. Paul, you are welcome to have it and if you don't want it, then somebody else might like it. Some photos at this link.

http://www.dcaudiodiy.com/phpBB3/viewtopic.php?f=5&t=1216&start=10

I thought it was an improvement. I'll probably have some other stuff to get rid of as well.

My health has improved enough that I can carry a box of wine so I should be able to get the 20-pound beast out to the car.

ray


Top
 Profile  
 
PostPosted: January 17th, 2020, 10:20 am 
Offline
User avatar

Joined: December 14th, 2013, 2:19 pm
Posts: 948
Paul, if you don't want the transformer, I'd respectfully like to be next in line. I'll be happy travel to pick it up!

Thanks Ray and Paul, either way.

Stuart


Top
 Profile  
 
PostPosted: January 18th, 2020, 8:55 am 
Offline
User avatar

Joined: January 15th, 2015, 7:19 am
Posts: 1697
Location: Baltimore MD
Thanks Ray but got something similar when we had that discussion last year.
I was just thinking about what I have.
So my thought exercise was a waste of time and I should not be concerned about what’s happening to the AC mains wave through the iso tranny.


Top
 Profile  
 
PostPosted: January 18th, 2020, 9:07 am 
Offline

Joined: January 14th, 2015, 11:15 pm
Posts: 499
That's fine Paul. Stuart, I will bring the transformer to the Elsinore meeting, whenever that is.

ray


Top
 Profile  
 
PostPosted: January 18th, 2020, 9:15 am 
Offline
User avatar

Joined: December 14th, 2013, 2:19 pm
Posts: 948
That would be great Ray. I'm anxious to hear those as well. David M always puts on a great meet.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: Google [Bot] and 39 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group