Buffalo II & transformers - Page 53 - diyAudio
Go Back   Home > Forums > Commercial Sector > Manufacturers > Twisted Pear

Twisted Pear Superior quality electronic kits

Reply
 
Thread Tools Search this Thread
Old 15th February 2014, 10:35 AM   #521
Ryssen is offline Ryssen  Sweden
diyAudio Member
 
Ryssen's Avatar
 
Join Date: Dec 2003
Location: Sweden--> Here
Quote:
Now let me understand this: I connected directly to the output of 30mV rms (with the 3 ohm resistors as shown in the diagram) my amp, but even at low volume there is distortion. Why?
If you take the signal before the tubestage,is there distortion there to?


Another question,can I use the 330 ohms resistors even if I use the "unballancer" with differential tube input.(without a trafo)
__________________
Regards Åke
  Reply With Quote
Old 27th May 2014, 03:25 AM   #522
zz1969 is offline zz1969  Russian Federation
diyAudio Member
 
Join Date: Jul 2012
Quote:
Originally Posted by Joe Rasmussen View Post
Interesting question, but simple answer. Since the Secondary load is relatively high, the DAC hardly sees the DC resistance of the transformer, if it is reasonably low. I used a 1:1 transformer with a lot higher DCR than that and yet was under 100 Ohm.

The DAC will see the 330R at all times and very little in parallel.

Lundahl 1517 will be OK.

BTW, hate to be pedantic, there is no such thing as Ohms, it is always Ohm (no "s") whether singular or plural.

Cheers, Joe
Hi Joe,

if using 2 DACs in dual mono, should we use 3 Ohm or 1.5 Ohm resistors? (in a variant with transformers and a tube stage)

Rgds,
Evgeny
  Reply With Quote
Old 27th May 2014, 06:42 AM   #523
diyAudio Member
 
Joe Rasmussen's Avatar
 
Join Date: Jan 2003
Location: Sydney, Australia
Send a message via MSN to Joe Rasmussen
Quote:
Originally Posted by zz1969 View Post
Hi Joe,

if using 2 DACs in dual mono, should we use 3 Ohm or 1.5 Ohm resistors? (in a variant with transformers and a tube stage)

Rgds,
Evgeny
Often that is the case, if you are dumping twice the current, it will produce double the voltage.
__________________
The "Elsinore Project" DIY Speaker System
Custom Analogue Audio - we also support and promote non-profit DIY
  Reply With Quote
Old 27th May 2014, 03:04 PM   #524
zz1969 is offline zz1969  Russian Federation
diyAudio Member
 
Join Date: Jul 2012
Hi Joe, thanks for a quick reply.
I am using your D setup at the moment: dual mono B-III with 1.5 Ohm resistors, Sowter 3603 transformers and an Aikido tube stage with 6N2P input and 6CG7 output tubes. Sounds good, for me better than any transistor output stage I tried. Thanks.
Evgeny
  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
Buffalo II Russ White Twisted Pear 1841 13th September 2014 12:28 PM
Volumite for Buffalo II? markusA Digital Line Level 15 8th April 2010 02:51 AM
Need help selecting an I2S/DSD/SPDIF connector for my impending Buffalo II orpheus Digital Source 0 9th February 2010 08:03 PM
FS- Twisted Pear Buffalo 32S Board & System New & Unused secretriches Swap Meet 1 10th August 2009 02:17 PM
Citation II output transformers dshortt9 Tubes / Valves 10 12th December 2003 03:45 PM


New To Site? Need Help?

All times are GMT. The time now is 11:34 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