A470 transformers replacement

knowledge base for the classic Dynaco ST70

A470 transformers replacement

Postby bulldog » Fri Jan 25, 2013 4:14 am

What should be the better option - Dynakit or Triode Electronics?
Or maybe Edcor, Hammond, other choice in that price range.. ?
Thanks
bulldog
 
Posts: 1
Joined: Thu Jan 24, 2013 8:31 am

Re: A470 transformers replacement

Postby Geek » Fri Jan 25, 2013 4:47 am

Heard a Triode and an Edcor, they're really good.

Heard a Hammond, OK, but not as good.

Never heard a Dynakit.

Cheers!
-= Gregg =-
Fine wine comes in glass bottles, not plastic sacks. Therefore the finer electrons are also found in glass bottles.
User avatar
Geek
KT88
 
Posts: 3585
Joined: Sun Oct 21, 2007 3:01 am
Location: Chilliwack, British Columbia

Re: A470 transformers replacement

Postby kheper » Thu Jan 31, 2013 3:14 pm

Transcendar 30W PP 5K Push-Pull with 40% Ultra Linear Taps to 4, 8, & 16 ohm at $160/pr

http://www.transcendar.com/3.html
User avatar
kheper
KT88
 
Posts: 1252
Joined: Wed Dec 21, 2005 10:14 pm
Location: Philly, PA

Re: A470 transformers replacement

Postby Sal Brisindi » Sat Feb 02, 2013 9:56 pm

I have used and heard Dynakitparts.com A-470's and they will sound great in your ST-70.

Sal
User avatar
Sal Brisindi
KT88
 
Posts: 374
Joined: Thu Mar 22, 2007 5:21 am
Location: Freehold N.J.

Re: A470 transformers replacement

Postby dcriner » Thu Feb 28, 2013 7:51 pm

How do the various replacement xfmrs compare to the original Dynaco ones?
Doug Criner
dcriner
KT88
 
Posts: 309
Joined: Mon Oct 23, 2006 4:19 pm
Location: Illinois

Re: A470 transformers replacement

Postby pmarcin » Sat Apr 20, 2013 2:29 pm

I've tried both the Triode and Dynakits. They're both excellent. The Triode's have the PFE Teflon leads, but their power transformers's secondaries tended to run about 10% high.

Measurements: Bob Latino posted some distortion chart comparisons a few years back. The results were virtually identical with the Dynakit about .1% higher at 35 kHz. The differences wouldn't have been audible (y)
User avatar
pmarcin
 
Posts: 43
Joined: Sat Apr 20, 2013 10:36 am


Return to st70

Who is online

Users browsing this forum: No registered users and 19 guests

cron